diff options
Diffstat (limited to 'drivers/gpu/drm/bridge')
-rw-r--r-- | drivers/gpu/drm/bridge/Kconfig | 19 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/Makefile | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/adv7511/Kconfig | 15 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/adv7511/Makefile | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/adv7511/adv7511.h | 392 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 1124 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/adv7511/adv7533.c | 265 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/analogix-anx78xx.c | 8 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 8 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 12 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h | 5 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/dw-hdmi.c | 30 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/nxp-ptn3460.c | 8 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/parade-ps8622.c | 14 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/sii902x.c | 467 | ||||
-rw-r--r-- | drivers/gpu/drm/bridge/tc358767.c | 1413 |
17 files changed, 3723 insertions, 66 deletions
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 8f7423f18da5..b590e678052d 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -50,6 +50,25 @@ config DRM_PARADE_PS8622 ---help--- Parade eDP-LVDS bridge chip driver. +config DRM_SII902X + tristate "Silicon Image sii902x RGB/HDMI bridge" + depends on OF + select DRM_KMS_HELPER + select REGMAP_I2C + ---help--- + Silicon Image sii902x bridge chip driver. + +config DRM_TOSHIBA_TC358767 + tristate "Toshiba TC358767 eDP bridge" + depends on OF + select DRM_KMS_HELPER + select REGMAP_I2C + select DRM_PANEL + ---help--- + Toshiba TC358767 eDP bridge chip driver. + source "drivers/gpu/drm/bridge/analogix/Kconfig" +source "drivers/gpu/drm/bridge/adv7511/Kconfig" + endmenu diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index 96b13b30e6ab..efdb07e878f5 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -5,4 +5,7 @@ obj-$(CONFIG_DRM_DW_HDMI) += dw-hdmi.o obj-$(CONFIG_DRM_DW_HDMI_AHB_AUDIO) += dw-hdmi-ahb-audio.o obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o +obj-$(CONFIG_DRM_SII902X) += sii902x.o +obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/ +obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/ diff --git a/drivers/gpu/drm/bridge/adv7511/Kconfig b/drivers/gpu/drm/bridge/adv7511/Kconfig new file mode 100644 index 000000000000..d2b0499ab7d7 --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/Kconfig @@ -0,0 +1,15 @@ +config DRM_I2C_ADV7511 + tristate "AV7511 encoder" + depends on OF + select DRM_KMS_HELPER + select REGMAP_I2C + help + Support for the Analog Device ADV7511(W) and ADV7513 HDMI encoders. + +config DRM_I2C_ADV7533 + bool "ADV7533 encoder" + depends on DRM_I2C_ADV7511 + select DRM_MIPI_DSI + default y + help + Support for the Analog Devices ADV7533 DSI to HDMI encoder. diff --git a/drivers/gpu/drm/bridge/adv7511/Makefile b/drivers/gpu/drm/bridge/adv7511/Makefile new file mode 100644 index 000000000000..9019327fff4c --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/Makefile @@ -0,0 +1,3 @@ +adv7511-y := adv7511_drv.o +adv7511-$(CONFIG_DRM_I2C_ADV7533) += adv7533.o +obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511.o diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h new file mode 100644 index 000000000000..161c923d6162 --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -0,0 +1,392 @@ +/* + * Analog Devices ADV7511 HDMI transmitter driver + * + * Copyright 2012 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ + +#ifndef __DRM_I2C_ADV7511_H__ +#define __DRM_I2C_ADV7511_H__ + +#include <linux/hdmi.h> +#include <linux/i2c.h> +#include <linux/regmap.h> + +#include <drm/drm_crtc_helper.h> +#include <drm/drm_mipi_dsi.h> + +#define ADV7511_REG_CHIP_REVISION 0x00 +#define ADV7511_REG_N0 0x01 +#define ADV7511_REG_N1 0x02 +#define ADV7511_REG_N2 0x03 +#define ADV7511_REG_SPDIF_FREQ 0x04 +#define ADV7511_REG_CTS_AUTOMATIC1 0x05 +#define ADV7511_REG_CTS_AUTOMATIC2 0x06 +#define ADV7511_REG_CTS_MANUAL0 0x07 +#define ADV7511_REG_CTS_MANUAL1 0x08 +#define ADV7511_REG_CTS_MANUAL2 0x09 +#define ADV7511_REG_AUDIO_SOURCE 0x0a +#define ADV7511_REG_AUDIO_CONFIG 0x0b +#define ADV7511_REG_I2S_CONFIG 0x0c +#define ADV7511_REG_I2S_WIDTH 0x0d +#define ADV7511_REG_AUDIO_SUB_SRC0 0x0e +#define ADV7511_REG_AUDIO_SUB_SRC1 0x0f +#define ADV7511_REG_AUDIO_SUB_SRC2 0x10 +#define ADV7511_REG_AUDIO_SUB_SRC3 0x11 +#define ADV7511_REG_AUDIO_CFG1 0x12 +#define ADV7511_REG_AUDIO_CFG2 0x13 +#define ADV7511_REG_AUDIO_CFG3 0x14 +#define ADV7511_REG_I2C_FREQ_ID_CFG 0x15 +#define ADV7511_REG_VIDEO_INPUT_CFG1 0x16 +#define ADV7511_REG_CSC_UPPER(x) (0x18 + (x) * 2) +#define ADV7511_REG_CSC_LOWER(x) (0x19 + (x) * 2) +#define ADV7511_REG_SYNC_DECODER(x) (0x30 + (x)) +#define ADV7511_REG_DE_GENERATOR (0x35 + (x)) +#define ADV7511_REG_PIXEL_REPETITION 0x3b +#define ADV7511_REG_VIC_MANUAL 0x3c +#define ADV7511_REG_VIC_SEND 0x3d +#define ADV7511_REG_VIC_DETECTED 0x3e +#define ADV7511_REG_AUX_VIC_DETECTED 0x3f +#define ADV7511_REG_PACKET_ENABLE0 0x40 +#define ADV7511_REG_POWER 0x41 +#define ADV7511_REG_STATUS 0x42 +#define ADV7511_REG_EDID_I2C_ADDR 0x43 +#define ADV7511_REG_PACKET_ENABLE1 0x44 +#define ADV7511_REG_PACKET_I2C_ADDR 0x45 +#define ADV7511_REG_DSD_ENABLE 0x46 +#define ADV7511_REG_VIDEO_INPUT_CFG2 0x48 +#define ADV7511_REG_INFOFRAME_UPDATE 0x4a +#define ADV7511_REG_GC(x) (0x4b + (x)) /* 0x4b - 0x51 */ +#define ADV7511_REG_AVI_INFOFRAME_VERSION 0x52 +#define ADV7511_REG_AVI_INFOFRAME_LENGTH 0x53 +#define ADV7511_REG_AVI_INFOFRAME_CHECKSUM 0x54 +#define ADV7511_REG_AVI_INFOFRAME(x) (0x55 + (x)) /* 0x55 - 0x6f */ +#define ADV7511_REG_AUDIO_INFOFRAME_VERSION 0x70 +#define ADV7511_REG_AUDIO_INFOFRAME_LENGTH 0x71 +#define ADV7511_REG_AUDIO_INFOFRAME_CHECKSUM 0x72 +#define ADV7511_REG_AUDIO_INFOFRAME(x) (0x73 + (x)) /* 0x73 - 0x7c */ +#define ADV7511_REG_INT_ENABLE(x) (0x94 + (x)) +#define ADV7511_REG_INT(x) (0x96 + (x)) +#define ADV7511_REG_INPUT_CLK_DIV 0x9d +#define ADV7511_REG_PLL_STATUS 0x9e +#define ADV7511_REG_HDMI_POWER 0xa1 +#define ADV7511_REG_HDCP_HDMI_CFG 0xaf +#define ADV7511_REG_AN(x) (0xb0 + (x)) /* 0xb0 - 0xb7 */ +#define ADV7511_REG_HDCP_STATUS 0xb8 +#define ADV7511_REG_BCAPS 0xbe +#define ADV7511_REG_BKSV(x) (0xc0 + (x)) /* 0xc0 - 0xc3 */ +#define ADV7511_REG_EDID_SEGMENT 0xc4 +#define ADV7511_REG_DDC_STATUS 0xc8 +#define ADV7511_REG_EDID_READ_CTRL 0xc9 +#define ADV7511_REG_BSTATUS(x) (0xca + (x)) /* 0xca - 0xcb */ +#define ADV7511_REG_TIMING_GEN_SEQ 0xd0 +#define ADV7511_REG_POWER2 0xd6 +#define ADV7511_REG_HSYNC_PLACEMENT_MSB 0xfa + +#define ADV7511_REG_SYNC_ADJUSTMENT(x) (0xd7 + (x)) /* 0xd7 - 0xdc */ +#define ADV7511_REG_TMDS_CLOCK_INV 0xde +#define ADV7511_REG_ARC_CTRL 0xdf +#define ADV7511_REG_CEC_I2C_ADDR 0xe1 +#define ADV7511_REG_CEC_CTRL 0xe2 +#define ADV7511_REG_CHIP_ID_HIGH 0xf5 +#define ADV7511_REG_CHIP_ID_LOW 0xf6 + +#define ADV7511_CSC_ENABLE BIT(7) +#define ADV7511_CSC_UPDATE_MODE BIT(5) + +#define ADV7511_INT0_HPD BIT(7) +#define ADV7511_INT0_VSYNC BIT(5) +#define ADV7511_INT0_AUDIO_FIFO_FULL BIT(4) +#define ADV7511_INT0_EDID_READY BIT(2) +#define ADV7511_INT0_HDCP_AUTHENTICATED BIT(1) + +#define ADV7511_INT1_DDC_ERROR BIT(7) +#define ADV7511_INT1_BKSV BIT(6) +#define ADV7511_INT1_CEC_TX_READY BIT(5) +#define ADV7511_INT1_CEC_TX_ARBIT_LOST BIT(4) +#define ADV7511_INT1_CEC_TX_RETRY_TIMEOUT BIT(3) +#define ADV7511_INT1_CEC_RX_READY3 BIT(2) +#define ADV7511_INT1_CEC_RX_READY2 BIT(1) +#define ADV7511_INT1_CEC_RX_READY1 BIT(0) + +#define ADV7511_ARC_CTRL_POWER_DOWN BIT(0) + +#define ADV7511_CEC_CTRL_POWER_DOWN BIT(0) + +#define ADV7511_POWER_POWER_DOWN BIT(6) + +#define ADV7511_HDMI_CFG_MODE_MASK 0x2 +#define ADV7511_HDMI_CFG_MODE_DVI 0x0 +#define ADV7511_HDMI_CFG_MODE_HDMI 0x2 + +#define ADV7511_AUDIO_SELECT_I2C 0x0 +#define ADV7511_AUDIO_SELECT_SPDIF 0x1 +#define ADV7511_AUDIO_SELECT_DSD 0x2 +#define ADV7511_AUDIO_SELECT_HBR 0x3 +#define ADV7511_AUDIO_SELECT_DST 0x4 + +#define ADV7511_I2S_SAMPLE_LEN_16 0x2 +#define ADV7511_I2S_SAMPLE_LEN_20 0x3 +#define ADV7511_I2S_SAMPLE_LEN_18 0x4 +#define ADV7511_I2S_SAMPLE_LEN_22 0x5 +#define ADV7511_I2S_SAMPLE_LEN_19 0x8 +#define ADV7511_I2S_SAMPLE_LEN_23 0x9 +#define ADV7511_I2S_SAMPLE_LEN_24 0xb +#define ADV7511_I2S_SAMPLE_LEN_17 0xc +#define ADV7511_I2S_SAMPLE_LEN_21 0xd + +#define ADV7511_SAMPLE_FREQ_44100 0x0 +#define ADV7511_SAMPLE_FREQ_48000 0x2 +#define ADV7511_SAMPLE_FREQ_32000 0x3 +#define ADV7511_SAMPLE_FREQ_88200 0x8 +#define ADV7511_SAMPLE_FREQ_96000 0xa +#define ADV7511_SAMPLE_FREQ_176400 0xc +#define ADV7511_SAMPLE_FREQ_192000 0xe + +#define ADV7511_STATUS_POWER_DOWN_POLARITY BIT(7) +#define ADV7511_STATUS_HPD BIT(6) +#define ADV7511_STATUS_MONITOR_SENSE BIT(5) +#define ADV7511_STATUS_I2S_32BIT_MODE BIT(3) + +#define ADV7511_PACKET_ENABLE_N_CTS BIT(8+6) +#define ADV7511_PACKET_ENABLE_AUDIO_SAMPLE BIT(8+5) +#define ADV7511_PACKET_ENABLE_AVI_INFOFRAME BIT(8+4) +#define ADV7511_PACKET_ENABLE_AUDIO_INFOFRAME BIT(8+3) +#define ADV7511_PACKET_ENABLE_GC BIT(7) +#define ADV7511_PACKET_ENABLE_SPD BIT(6) +#define ADV7511_PACKET_ENABLE_MPEG BIT(5) +#define ADV7511_PACKET_ENABLE_ACP BIT(4) +#define ADV7511_PACKET_ENABLE_ISRC BIT(3) +#define ADV7511_PACKET_ENABLE_GM BIT(2) +#define ADV7511_PACKET_ENABLE_SPARE2 BIT(1) +#define ADV7511_PACKET_ENABLE_SPARE1 BIT(0) + +#define ADV7511_REG_POWER2_HPD_SRC_MASK 0xc0 +#define ADV7511_REG_POWER2_HPD_SRC_BOTH 0x00 +#define ADV7511_REG_POWER2_HPD_SRC_HPD 0x40 +#define ADV7511_REG_POWER2_HPD_SRC_CEC 0x80 +#define ADV7511_REG_POWER2_HPD_SRC_NONE 0xc0 +#define ADV7511_REG_POWER2_TDMS_ENABLE BIT(4) +#define ADV7511_REG_POWER2_GATE_INPUT_CLK BIT(0) + +#define ADV7511_LOW_REFRESH_RATE_NONE 0x0 +#define ADV7511_LOW_REFRESH_RATE_24HZ 0x1 +#define ADV7511_LOW_REFRESH_RATE_25HZ 0x2 +#define ADV7511_LOW_REFRESH_RATE_30HZ 0x3 + +#define ADV7511_AUDIO_CFG3_LEN_MASK 0x0f +#define ADV7511_I2C_FREQ_ID_CFG_RATE_MASK 0xf0 + +#define ADV7511_AUDIO_SOURCE_I2S 0 +#define ADV7511_AUDIO_SOURCE_SPDIF 1 + +#define ADV7511_I2S_FORMAT_I2S 0 +#define ADV7511_I2S_FORMAT_RIGHT_J 1 +#define ADV7511_I2S_FORMAT_LEFT_J 2 + +#define ADV7511_PACKET(p, x) ((p) * 0x20 + (x)) +#define ADV7511_PACKET_SDP(x) ADV7511_PACKET(0, x) +#define ADV7511_PACKET_MPEG(x) ADV7511_PACKET(1, x) +#define ADV7511_PACKET_ACP(x) ADV7511_PACKET(2, x) +#define ADV7511_PACKET_ISRC1(x) ADV7511_PACKET(3, x) +#define ADV7511_PACKET_ISRC2(x) ADV7511_PACKET(4, x) +#define ADV7511_PACKET_GM(x) ADV7511_PACKET(5, x) +#define ADV7511_PACKET_SPARE(x) ADV7511_PACKET(6, x) + +enum adv7511_input_clock { + ADV7511_INPUT_CLOCK_1X, + ADV7511_INPUT_CLOCK_2X, + ADV7511_INPUT_CLOCK_DDR, +}; + +enum adv7511_input_justification { + ADV7511_INPUT_JUSTIFICATION_EVENLY = 0, + ADV7511_INPUT_JUSTIFICATION_RIGHT = 1, + ADV7511_INPUT_JUSTIFICATION_LEFT = 2, +}; + +enum adv7511_input_sync_pulse { + ADV7511_INPUT_SYNC_PULSE_DE = 0, + ADV7511_INPUT_SYNC_PULSE_HSYNC = 1, + ADV7511_INPUT_SYNC_PULSE_VSYNC = 2, + ADV7511_INPUT_SYNC_PULSE_NONE = 3, +}; + +/** + * enum adv7511_sync_polarity - Polarity for the input sync signals + * @ADV7511_SYNC_POLARITY_PASSTHROUGH: Sync polarity matches that of + * the currently configured mode. + * @ADV7511_SYNC_POLARITY_LOW: Sync polarity is low + * @ADV7511_SYNC_POLARITY_HIGH: Sync polarity is high + * + * If the polarity is set to either LOW or HIGH the driver will configure the + * ADV7511 to internally invert the sync signal if required to match the sync + * polarity setting for the currently selected output mode. + * + * If the polarity is set to PASSTHROUGH, the ADV7511 will route the signal + * unchanged. This is used when the upstream graphics core already generates + * the sync signals with the correct polarity. + */ +enum adv7511_sync_polarity { + ADV7511_SYNC_POLARITY_PASSTHROUGH, + ADV7511_SYNC_POLARITY_LOW, + ADV7511_SYNC_POLARITY_HIGH, +}; + +/** + * struct adv7511_link_config - Describes adv7511 hardware configuration + * @input_color_depth: Number of bits per color component (8, 10 or 12) + * @input_colorspace: The input colorspace (RGB, YUV444, YUV422) + * @input_clock: The input video clock style (1x, 2x, DDR) + * @input_style: The input component arrangement variant + * @input_justification: Video input format bit justification + * @clock_delay: Clock delay for the input clock (in ps) + * @embedded_sync: Video input uses BT.656-style embedded sync + * @sync_pulse: Select the sync pulse + * @vsync_polarity: vsync input signal configuration + * @hsync_polarity: hsync input signal configuration + */ +struct adv7511_link_config { + unsigned int input_color_depth; + enum hdmi_colorspace input_colorspace; + enum adv7511_input_clock input_clock; + unsigned int input_style; + enum adv7511_input_justification input_justification; + + int clock_delay; + + bool embedded_sync; + enum adv7511_input_sync_pulse sync_pulse; + enum adv7511_sync_polarity vsync_polarity; + enum adv7511_sync_polarity hsync_polarity; +}; + +/** + * enum adv7511_csc_scaling - Scaling factor for the ADV7511 CSC + * @ADV7511_CSC_SCALING_1: CSC results are not scaled + * @ADV7511_CSC_SCALING_2: CSC results are scaled by a factor of two + * @ADV7511_CSC_SCALING_4: CSC results are scalled by a factor of four + */ +enum adv7511_csc_scaling { + ADV7511_CSC_SCALING_1 = 0, + ADV7511_CSC_SCALING_2 = 1, + ADV7511_CSC_SCALING_4 = 2, +}; + +/** + * struct adv7511_video_config - Describes adv7511 hardware configuration + * @csc_enable: Whether to enable color space conversion + * @csc_scaling_factor: Color space conversion scaling factor + * @csc_coefficents: Color space conversion coefficents + * @hdmi_mode: Whether to use HDMI or DVI output mode + * @avi_infoframe: HDMI infoframe + */ +struct adv7511_video_config { + bool csc_enable; + enum adv7511_csc_scaling csc_scaling_factor; + const uint16_t *csc_coefficents; + + bool hdmi_mode; + struct hdmi_avi_infoframe avi_infoframe; +}; + +enum adv7511_type { + ADV7511, + ADV7533, +}; + +struct adv7511 { + struct i2c_client *i2c_main; + struct i2c_client *i2c_edid; + struct i2c_client *i2c_cec; + + struct regmap *regmap; + struct regmap *regmap_cec; + enum drm_connector_status status; + bool powered; + + struct drm_display_mode curr_mode; + + unsigned int f_tmds; + + unsigned int current_edid_segment; + uint8_t edid_buf[256]; + bool edid_read; + + wait_queue_head_t wq; + struct drm_bridge bridge; + struct drm_connector connector; + + bool embedded_sync; + enum adv7511_sync_polarity vsync_polarity; + enum adv7511_sync_polarity hsync_polarity; + bool rgb; + + struct edid *edid; + + struct gpio_desc *gpio_pd; + + /* ADV7533 DSI RX related params */ + struct device_node *host_node; + struct mipi_dsi_device *dsi; + u8 num_dsi_lanes; + bool use_timing_gen; + + enum adv7511_type type; +}; + +#ifdef CONFIG_DRM_I2C_ADV7533 +void adv7533_dsi_power_on(struct adv7511 *adv); +void adv7533_dsi_power_off(struct adv7511 *adv); +void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode); +int adv7533_patch_registers(struct adv7511 *adv); +void adv7533_uninit_cec(struct adv7511 *adv); +int adv7533_init_cec(struct adv7511 *adv); +int adv7533_attach_dsi(struct adv7511 *adv); +void adv7533_detach_dsi(struct adv7511 *adv); +int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv); +#else +static inline void adv7533_dsi_power_on(struct adv7511 *adv) +{ +} + +static inline void adv7533_dsi_power_off(struct adv7511 *adv) +{ +} + +static inline void adv7533_mode_set(struct adv7511 *adv, + struct drm_display_mode *mode) +{ +} + +static inline int adv7533_patch_registers(struct adv7511 *adv) +{ + return -ENODEV; +} + +static inline void adv7533_uninit_cec(struct adv7511 *adv) +{ +} + +static inline int adv7533_init_cec(struct adv7511 *adv) +{ + return -ENODEV; +} + +static inline int adv7533_attach_dsi(struct adv7511 *adv) +{ + return -ENODEV; +} + +static inline void adv7533_detach_dsi(struct adv7511 *adv) +{ +} + +static inline int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv) +{ + return -ENODEV; +} +#endif + +#endif /* __DRM_I2C_ADV7511_H__ */ diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c new file mode 100644 index 000000000000..ec8fb2ed3275 --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -0,0 +1,1124 @@ +/* + * Analog Devices ADV7511 HDMI transmitter driver + * + * Copyright 2012 Analog Devices Inc. + * + * Licensed under the GPL-2. + */ + +#include <linux/device.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/slab.h> + +#include <drm/drmP.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_edid.h> + +#include "adv7511.h" + +/* ADI recommended values for proper operation. */ +static const struct reg_sequence adv7511_fixed_registers[] = { + { 0x98, 0x03 }, + { 0x9a, 0xe0 }, + { 0x9c, 0x30 }, + { 0x9d, 0x61 }, + { 0xa2, 0xa4 }, + { 0xa3, 0xa4 }, + { 0xe0, 0xd0 }, + { 0xf9, 0x00 }, + { 0x55, 0x02 }, +}; + +/* ----------------------------------------------------------------------------- + * Register access + */ + +static const uint8_t adv7511_register_defaults[] = { + 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00 */ + 0x00, 0x00, 0x01, 0x0e, 0xbc, 0x18, 0x01, 0x13, + 0x25, 0x37, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10 */ + 0x46, 0x62, 0x04, 0xa8, 0x00, 0x00, 0x1c, 0x84, + 0x1c, 0xbf, 0x04, 0xa8, 0x1e, 0x70, 0x02, 0x1e, /* 20 */ + 0x00, 0x00, 0x04, 0xa8, 0x08, 0x12, 0x1b, 0xac, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 30 */ + 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0xb0, + 0x00, 0x50, 0x90, 0x7e, 0x79, 0x70, 0x00, 0x00, /* 40 */ + 0x00, 0xa8, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x02, 0x0d, 0x00, 0x00, 0x00, 0x00, /* 50 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x01, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 80 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, /* 90 */ + 0x0b, 0x02, 0x00, 0x18, 0x5a, 0x60, 0x00, 0x00, + 0x00, 0x00, 0x80, 0x80, 0x08, 0x04, 0x00, 0x00, /* a0 */ + 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40, 0x14, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b0 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c0 */ + 0x00, 0x03, 0x00, 0x00, 0x02, 0x00, 0x01, 0x04, + 0x30, 0xff, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00, /* d0 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x01, + 0x80, 0x75, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00, /* e0 */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x11, 0x00, /* f0 */ + 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +static bool adv7511_register_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ADV7511_REG_CHIP_REVISION: + case ADV7511_REG_SPDIF_FREQ: + case ADV7511_REG_CTS_AUTOMATIC1: + case ADV7511_REG_CTS_AUTOMATIC2: + case ADV7511_REG_VIC_DETECTED: + case ADV7511_REG_VIC_SEND: + case ADV7511_REG_AUX_VIC_DETECTED: + case ADV7511_REG_STATUS: + case ADV7511_REG_GC(1): + case ADV7511_REG_INT(0): + case ADV7511_REG_INT(1): + case ADV7511_REG_PLL_STATUS: + case ADV7511_REG_AN(0): + case ADV7511_REG_AN(1): + case ADV7511_REG_AN(2): + case ADV7511_REG_AN(3): + case ADV7511_REG_AN(4): + case ADV7511_REG_AN(5): + case ADV7511_REG_AN(6): + case ADV7511_REG_AN(7): + case ADV7511_REG_HDCP_STATUS: + case ADV7511_REG_BCAPS: + case ADV7511_REG_BKSV(0): + case ADV7511_REG_BKSV(1): + case ADV7511_REG_BKSV(2): + case ADV7511_REG_BKSV(3): + case ADV7511_REG_BKSV(4): + case ADV7511_REG_DDC_STATUS: + case ADV7511_REG_EDID_READ_CTRL: + case ADV7511_REG_BSTATUS(0): + case ADV7511_REG_BSTATUS(1): + case ADV7511_REG_CHIP_ID_HIGH: + case ADV7511_REG_CHIP_ID_LOW: + return true; + } + + return false; +} + +static const struct regmap_config adv7511_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_RBTREE, + .reg_defaults_raw = adv7511_register_defaults, + .num_reg_defaults_raw = ARRAY_SIZE(adv7511_register_defaults), + + .volatile_reg = adv7511_register_volatile, +}; + +/* ----------------------------------------------------------------------------- + * Hardware configuration + */ + +static void adv7511_set_colormap(struct adv7511 *adv7511, bool enable, + const uint16_t *coeff, + unsigned int scaling_factor) +{ + unsigned int i; + + regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), + ADV7511_CSC_UPDATE_MODE, ADV7511_CSC_UPDATE_MODE); + + if (enable) { + for (i = 0; i < 12; ++i) { + regmap_update_bits(adv7511->regmap, + ADV7511_REG_CSC_UPPER(i), + 0x1f, coeff[i] >> 8); + regmap_write(adv7511->regmap, + ADV7511_REG_CSC_LOWER(i), + coeff[i] & 0xff); + } + } + + if (enable) + regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), + 0xe0, 0x80 | (scaling_factor << 5)); + else + regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(0), + 0x80, 0x00); + + regmap_update_bits(adv7511->regmap, ADV7511_REG_CSC_UPPER(1), + ADV7511_CSC_UPDATE_MODE, 0); +} + +static int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet) +{ + if (packet & 0xff) + regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, + packet, 0xff); + + if (packet & 0xff00) { + packet >>= 8; + regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, + packet, 0xff); + } + + return 0; +} + +static int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet) +{ + if (packet & 0xff) + regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE0, + packet, 0x00); + + if (packet & 0xff00) { + packet >>= 8; + regmap_update_bits(adv7511->regmap, ADV7511_REG_PACKET_ENABLE1, + packet, 0x00); + } + + return 0; +} + +/* Coefficients for adv7511 color space conversion */ +static const uint16_t adv7511_csc_ycbcr_to_rgb[] = { + 0x0734, 0x04ad, 0x0000, 0x1c1b, + 0x1ddc, 0x04ad, 0x1f24, 0x0135, + 0x0000, 0x04ad, 0x087c, 0x1b77, +}; + +static void adv7511_set_config_csc(struct adv7511 *adv7511, + struct drm_connector *connector, + bool rgb) +{ + struct adv7511_video_config config; + bool output_format_422, output_format_ycbcr; + unsigned int mode; + uint8_t infoframe[17]; + + if (adv7511->edid) + config.hdmi_mode = drm_detect_hdmi_monitor(adv7511->edid); + else + config.hdmi_mode = false; + + hdmi_avi_infoframe_init(&config.avi_infoframe); + + config.avi_infoframe.scan_mode = HDMI_SCAN_MODE_UNDERSCAN; + + if (rgb) { + config.csc_enable = false; + config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB; + } else { + config.csc_scaling_factor = ADV7511_CSC_SCALING_4; + config.csc_coefficents = adv7511_csc_ycbcr_to_rgb; + + if ((connector->display_info.color_formats & + DRM_COLOR_FORMAT_YCRCB422) && + config.hdmi_mode) { + config.csc_enable = false; + config.avi_infoframe.colorspace = + HDMI_COLORSPACE_YUV422; + } else { + config.csc_enable = true; + config.avi_infoframe.colorspace = HDMI_COLORSPACE_RGB; + } + } + + if (config.hdmi_mode) { + mode = ADV7511_HDMI_CFG_MODE_HDMI; + + switch (config.avi_infoframe.colorspace) { + case HDMI_COLORSPACE_YUV444: + output_format_422 = false; + output_format_ycbcr = true; + break; + case HDMI_COLORSPACE_YUV422: + output_format_422 = true; + output_format_ycbcr = true; + break; + default: + output_format_422 = false; + output_format_ycbcr = false; + break; + } + } else { + mode = ADV7511_HDMI_CFG_MODE_DVI; + output_format_422 = false; + output_format_ycbcr = false; + } + + adv7511_packet_disable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); + + adv7511_set_colormap(adv7511, config.csc_enable, + config.csc_coefficents, + config.csc_scaling_factor); + + regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x81, + (output_format_422 << 7) | output_format_ycbcr); + + regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG, + ADV7511_HDMI_CFG_MODE_MASK, mode); + + hdmi_avi_infoframe_pack(&config.avi_infoframe, infoframe, + sizeof(infoframe)); + + /* The AVI infoframe id is not configurable */ + regmap_bulk_write(adv7511->regmap, ADV7511_REG_AVI_INFOFRAME_VERSION, + infoframe + 1, sizeof(infoframe) - 1); + + adv7511_packet_enable(adv7511, ADV7511_PACKET_ENABLE_AVI_INFOFRAME); +} + +static void adv7511_set_link_config(struct adv7511 *adv7511, + const struct adv7511_link_config *config) +{ + /* + * The input style values documented in the datasheet don't match the + * hardware register field values :-( + */ + static const unsigned int input_styles[4] = { 0, 2, 1, 3 }; + + unsigned int clock_delay; + unsigned int color_depth; + unsigned int input_id; + + clock_delay = (config->clock_delay + 1200) / 400; + color_depth = config->input_color_depth == 8 ? 3 + : (config->input_color_depth == 10 ? 1 : 2); + + /* TODO Support input ID 6 */ + if (config->input_colorspace != HDMI_COLORSPACE_YUV422) + input_id = config->input_clock == ADV7511_INPUT_CLOCK_DDR + ? 5 : 0; + else if (config->input_clock == ADV7511_INPUT_CLOCK_DDR) + input_id = config->embedded_sync ? 8 : 7; + else if (config->input_clock == ADV7511_INPUT_CLOCK_2X) + input_id = config->embedded_sync ? 4 : 3; + else + input_id = config->embedded_sync ? 2 : 1; + + regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG, 0xf, + input_id); + regmap_update_bits(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG1, 0x7e, + (color_depth << 4) | + (input_styles[config->input_style] << 2)); + regmap_write(adv7511->regmap, ADV7511_REG_VIDEO_INPUT_CFG2, + config->input_justification << 3); + regmap_write(adv7511->regmap, ADV7511_REG_TIMING_GEN_SEQ, + config->sync_pulse << 2); + + regmap_write(adv7511->regmap, 0xba, clock_delay << 5); + + adv7511->embedded_sync = config->embedded_sync; + adv7511->hsync_polarity = config->hsync_polarity; + adv7511->vsync_polarity = config->vsync_polarity; + adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB; +} + +static void adv7511_power_on(struct adv7511 *adv7511) +{ + adv7511->current_edid_segment = -1; + + regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, + ADV7511_POWER_POWER_DOWN, 0); + if (adv7511->i2c_main->irq) { + /* + * Documentation says the INT_ENABLE registers are reset in + * POWER_DOWN mode. My 7511w preserved the bits, however. + * Still, let's be safe and stick to the documentation. + */ + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), + ADV7511_INT0_EDID_READY); + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR); + } + + /* + * Per spec it is allowed to pulse the HPD signal to indicate that the + * EDID information has changed. Some monitors do this when they wakeup + * from standby or are enabled. When the HPD goes low the adv7511 is + * reset and the outputs are disabled which might cause the monitor to + * go to standby again. To avoid this we ignore the HPD pin for the + * first few seconds after enabling the output. + */ + regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, + ADV7511_REG_POWER2_HPD_SRC_MASK, + ADV7511_REG_POWER2_HPD_SRC_NONE); + + /* + * Most of the registers are reset during power down or when HPD is low. + */ + regcache_sync(adv7511->regmap); + + if (adv7511->type == ADV7533) + adv7533_dsi_power_on(adv7511); + + adv7511->powered = true; +} + +static void adv7511_power_off(struct adv7511 *adv7511) +{ + /* TODO: setup additional power down modes */ + regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, + ADV7511_POWER_POWER_DOWN, + ADV7511_POWER_POWER_DOWN); + regcache_mark_dirty(adv7511->regmap); + + if (adv7511->type == ADV7533) + adv7533_dsi_power_off(adv7511); + + adv7511->powered = false; +} + +/* ----------------------------------------------------------------------------- + * Interrupt and hotplug detection + */ + +static bool adv7511_hpd(struct adv7511 *adv7511) +{ + unsigned int irq0; + int ret; + + ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); + if (ret < 0) + return false; + + if (irq0 & ADV7511_INT0_HPD) { + regmap_write(adv7511->regmap, ADV7511_REG_INT(0), + ADV7511_INT0_HPD); + return true; + } + + return false; +} + +static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd) +{ + unsigned int irq0, irq1; + int ret; + + ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(0), &irq0); + if (ret < 0) + return ret; + + ret = regmap_read(adv7511->regmap, ADV7511_REG_INT(1), &irq1); + if (ret < 0) + return ret; + + regmap_write(adv7511->regmap, ADV7511_REG_INT(0), irq0); + regmap_write(adv7511->regmap, ADV7511_REG_INT(1), irq1); + + if (process_hpd && irq0 & ADV7511_INT0_HPD && adv7511->bridge.encoder) + drm_helper_hpd_irq_event(adv7511->connector.dev); + + if (irq0 & ADV7511_INT0_EDID_READY || irq1 & ADV7511_INT1_DDC_ERROR) { + adv7511->edid_read = true; + + if (adv7511->i2c_main->irq) + wake_up_all(&adv7511->wq); + } + + return 0; +} + +static irqreturn_t adv7511_irq_handler(int irq, void *devid) +{ + struct adv7511 *adv7511 = devid; + int ret; + + ret = adv7511_irq_process(adv7511, true); + return ret < 0 ? IRQ_NONE : IRQ_HANDLED; +} + +/* ----------------------------------------------------------------------------- + * EDID retrieval + */ + +static int adv7511_wait_for_edid(struct adv7511 *adv7511, int timeout) +{ + int ret; + + if (adv7511->i2c_main->irq) { + ret = wait_event_interruptible_timeout(adv7511->wq, + adv7511->edid_read, msecs_to_jiffies(timeout)); + } else { + for (; timeout > 0; timeout -= 25) { + ret = adv7511_irq_process(adv7511, false); + if (ret < 0) + break; + + if (adv7511->edid_read) + break; + + msleep(25); + } + } + + return adv7511->edid_read ? 0 : -EIO; +} + +static int adv7511_get_edid_block(void *data, u8 *buf, unsigned int block, + size_t len) +{ + struct adv7511 *adv7511 = data; + struct i2c_msg xfer[2]; + uint8_t offset; + unsigned int i; + int ret; + + if (len > 128) + return -EINVAL; + + if (adv7511->current_edid_segment != block / 2) { + unsigned int status; + + ret = regmap_read(adv7511->regmap, ADV7511_REG_DDC_STATUS, + &status); + if (ret < 0) + return ret; + + if (status != 2) { + adv7511->edid_read = false; + regmap_write(adv7511->regmap, ADV7511_REG_EDID_SEGMENT, + block); + ret = adv7511_wait_for_edid(adv7511, 200); + if (ret < 0) + return ret; + } + + /* Break this apart, hopefully more I2C controllers will + * support 64 byte transfers than 256 byte transfers + */ + + xfer[0].addr = adv7511->i2c_edid->addr; + xfer[0].flags = 0; + xfer[0].len = 1; + xfer[0].buf = &offset; + xfer[1].addr = adv7511->i2c_edid->addr; + xfer[1].flags = I2C_M_RD; + xfer[1].len = 64; + xfer[1].buf = adv7511->edid_buf; + + offset = 0; + + for (i = 0; i < 4; ++i) { + ret = i2c_transfer(adv7511->i2c_edid->adapter, xfer, + ARRAY_SIZE(xfer)); + if (ret < 0) + return ret; + else if (ret != 2) + return -EIO; + + xfer[1].buf += 64; + offset += 64; + } + + adv7511->current_edid_segment = block / 2; + } + + if (block % 2 == 0) + memcpy(buf, adv7511->edid_buf, len); + else + memcpy(buf, adv7511->edid_buf + 128, len); + + return 0; +} + +/* ----------------------------------------------------------------------------- + * ADV75xx helpers + */ + +static int adv7511_get_modes(struct adv7511 *adv7511, + struct drm_connector *connector) +{ + struct edid *edid; + unsigned int count; + + /* Reading the EDID only works if the device is powered */ + if (!adv7511->powered) { + regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, + ADV7511_POWER_POWER_DOWN, 0); + if (adv7511->i2c_main->irq) { + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), + ADV7511_INT0_EDID_READY); + regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR); + } + adv7511->current_edid_segment = -1; + } + + edid = drm_do_get_edid(connector, adv7511_get_edid_block, adv7511); + + if (!adv7511->powered) + regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, + ADV7511_POWER_POWER_DOWN, + ADV7511_POWER_POWER_DOWN); + + kfree(adv7511->edid); + adv7511->edid = edid; + if (!edid) + return 0; + + drm_mode_connector_update_edid_property(connector, edid); + count = drm_add_edid_modes(connector, edid); + + adv7511_set_config_csc(adv7511, connector, adv7511->rgb); + + return count; +} + +static enum drm_connector_status +adv7511_detect(struct adv7511 *adv7511, struct drm_connector *connector) +{ + enum drm_connector_status status; + unsigned int val; + bool hpd; + int ret; + + ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); + if (ret < 0) + return connector_status_disconnected; + + if (val & ADV7511_STATUS_HPD) + status = connector_status_connected; + else + status = connector_status_disconnected; + + hpd = adv7511_hpd(adv7511); + + /* The chip resets itself when the cable is disconnected, so in case + * there is a pending HPD interrupt and the cable is connected there was + * at least one transition from disconnected to connected and the chip + * has to be reinitialized. */ + if (status == connector_status_connected && hpd && adv7511->powered) { + regcache_mark_dirty(adv7511->regmap); + adv7511_power_on(adv7511); + adv7511_get_modes(adv7511, connector); + if (adv7511->status == connector_status_connected) + status = connector_status_disconnected; + } else { + /* Renable HPD sensing */ + regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER2, + ADV7511_REG_POWER2_HPD_SRC_MASK, + ADV7511_REG_POWER2_HPD_SRC_BOTH); + } + + adv7511->status = status; + return status; +} + +static int adv7511_mode_valid(struct adv7511 *adv7511, + struct drm_display_mode *mode) +{ + if (mode->clock > 165000) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + +static void adv7511_mode_set(struct adv7511 *adv7511, + struct drm_display_mode *mode, + struct drm_display_mode *adj_mode) +{ + unsigned int low_refresh_rate; + unsigned int hsync_polarity = 0; + unsigned int vsync_polarity = 0; + + if (adv7511->embedded_sync) { + unsigned int hsync_offset, hsync_len; + unsigned int vsync_offset, vsync_len; + + hsync_offset = adj_mode->crtc_hsync_start - + adj_mode->crtc_hdisplay; + vsync_offset = adj_mode->crtc_vsync_start - + adj_mode->crtc_vdisplay; + hsync_len = adj_mode->crtc_hsync_end - + adj_mode->crtc_hsync_start; + vsync_len = adj_mode->crtc_vsync_end - + adj_mode->crtc_vsync_start; + + /* The hardware vsync generator has a off-by-one bug */ + vsync_offset += 1; + + regmap_write(adv7511->regmap, ADV7511_REG_HSYNC_PLACEMENT_MSB, + ((hsync_offset >> 10) & 0x7) << 5); + regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(0), + (hsync_offset >> 2) & 0xff); + regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(1), + ((hsync_offset & 0x3) << 6) | + ((hsync_len >> 4) & 0x3f)); + regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(2), + ((hsync_len & 0xf) << 4) | + ((vsync_offset >> 6) & 0xf)); + regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(3), + ((vsync_offset & 0x3f) << 2) | + ((vsync_len >> 8) & 0x3)); + regmap_write(adv7511->regmap, ADV7511_REG_SYNC_DECODER(4), + vsync_len & 0xff); + + hsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PHSYNC); + vsync_polarity = !(adj_mode->flags & DRM_MODE_FLAG_PVSYNC); + } else { + enum adv7511_sync_polarity mode_hsync_polarity; + enum adv7511_sync_polarity mode_vsync_polarity; + + /** + * If the input signal is always low or always high we want to + * invert or let it passthrough depending on the polarity of the + * current mode. + **/ + if (adj_mode->flags & DRM_MODE_FLAG_NHSYNC) + mode_hsync_polarity = ADV7511_SYNC_POLARITY_LOW; + else + mode_hsync_polarity = ADV7511_SYNC_POLARITY_HIGH; + + if (adj_mode->flags & DRM_MODE_FLAG_NVSYNC) + mode_vsync_polarity = ADV7511_SYNC_POLARITY_LOW; + else + mode_vsync_polarity = ADV7511_SYNC_POLARITY_HIGH; + + if (adv7511->hsync_polarity != mode_hsync_polarity && + adv7511->hsync_polarity != + ADV7511_SYNC_POLARITY_PASSTHROUGH) + hsync_polarity = 1; + + if (adv7511->vsync_polarity != mode_vsync_polarity && + adv7511->vsync_polarity != + ADV7511_SYNC_POLARITY_PASSTHROUGH) + vsync_polarity = 1; + } + + if (mode->vrefresh <= 24000) + low_refresh_rate = ADV7511_LOW_REFRESH_RATE_24HZ; + else if (mode->vrefresh <= 25000) + low_refresh_rate = ADV7511_LOW_REFRESH_RATE_25HZ; + else if (mode->vrefresh <= 30000) + low_refresh_rate = ADV7511_LOW_REFRESH_RATE_30HZ; + else + low_refresh_rate = ADV7511_LOW_REFRESH_RATE_NONE; + + regmap_update_bits(adv7511->regmap, 0xfb, + 0x6, low_refresh_rate << 1); + regmap_update_bits(adv7511->regmap, 0x17, + 0x60, (vsync_polarity << 6) | (hsync_polarity << 5)); + + if (adv7511->type == ADV7533) + adv7533_mode_set(adv7511, adj_mode); + + drm_mode_copy(&adv7511->curr_mode, adj_mode); + + /* + * TODO Test first order 4:2:2 to 4:4:4 up conversion method, which is + * supposed to give better results. + */ + + adv7511->f_tmds = mode->clock; +} + +/* Connector funcs */ +static struct adv7511 *connector_to_adv7511(struct drm_connector *connector) +{ + return container_of(connector, struct adv7511, connector); +} + +static int adv7511_connector_get_modes(struct drm_connector *connector) +{ + struct adv7511 *adv = connector_to_adv7511(connector); + + return adv7511_get_modes(adv, connector); +} + +static enum drm_mode_status +adv7511_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct adv7511 *adv = connector_to_adv7511(connector); + + return adv7511_mode_valid(adv, mode); +} + +static struct drm_connector_helper_funcs adv7511_connector_helper_funcs = { + .get_modes = adv7511_connector_get_modes, + .mode_valid = adv7511_connector_mode_valid, +}; + +static enum drm_connector_status +adv7511_connector_detect(struct drm_connector *connector, bool force) +{ + struct adv7511 *adv = connector_to_adv7511(connector); + + return adv7511_detect(adv, connector); +} + +static struct drm_connector_funcs adv7511_connector_funcs = { + .dpms = drm_atomic_helper_connector_dpms, + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = adv7511_connector_detect, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +/* Bridge funcs */ +static struct adv7511 *bridge_to_adv7511(struct drm_bridge *bridge) +{ + return container_of(bridge, struct adv7511, bridge); +} + +static void adv7511_bridge_enable(struct drm_bridge *bridge) +{ + struct adv7511 *adv = bridge_to_adv7511(bridge); + + adv7511_power_on(adv); +} + +static void adv7511_bridge_disable(struct drm_bridge *bridge) +{ + struct adv7511 *adv = bridge_to_adv7511(bridge); + + adv7511_power_off(adv); +} + +static void adv7511_bridge_mode_set(struct drm_bridge *bridge, + struct drm_display_mode *mode, + struct drm_display_mode *adj_mode) +{ + struct adv7511 *adv = bridge_to_adv7511(bridge); + + adv7511_mode_set(adv, mode, adj_mode); +} + +static int adv7511_bridge_attach(struct drm_bridge *bridge) +{ + struct adv7511 *adv = bridge_to_adv7511(bridge); + int ret; + + if (!bridge->encoder) { + DRM_ERROR("Parent encoder object not found"); + return -ENODEV; + } + + adv->connector.polled = DRM_CONNECTOR_POLL_HPD; + + ret = drm_connector_init(bridge->dev, &adv->connector, + &adv7511_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA); + if (ret) { + DRM_ERROR("Failed to initialize connector with drm\n"); + return ret; + } + drm_connector_helper_add(&adv->connector, + &adv7511_connector_helper_funcs); + drm_mode_connector_attach_encoder(&adv->connector, bridge->encoder); + + if (adv->type == ADV7533) + ret = adv7533_attach_dsi(adv); + + return ret; +} + +static struct drm_bridge_funcs adv7511_bridge_funcs = { + .enable = adv7511_bridge_enable, + .disable = adv7511_bridge_disable, + .mode_set = adv7511_bridge_mode_set, + .attach = adv7511_bridge_attach, +}; + +/* ----------------------------------------------------------------------------- + * Probe & remove + */ + +static int adv7511_parse_dt(struct device_node *np, + struct adv7511_link_config *config) +{ + const char *str; + int ret; + + of_property_read_u32(np, "adi,input-depth", &config->input_color_depth); + if (config->input_color_depth != 8 && config->input_color_depth != 10 && + config->input_color_depth != 12) + return -EINVAL; + + ret = of_property_read_string(np, "adi,input-colorspace", &str); + if (ret < 0) + return ret; + + if (!strcmp(str, "rgb")) + config->input_colorspace = HDMI_COLORSPACE_RGB; + else if (!strcmp(str, "yuv422")) + config->input_colorspace = HDMI_COLORSPACE_YUV422; + else if (!strcmp(str, "yuv444")) + config->input_colorspace = HDMI_COLORSPACE_YUV444; + else + return -EINVAL; + + ret = of_property_read_string(np, "adi,input-clock", &str); + if (ret < 0) + return ret; + + if (!strcmp(str, "1x")) + config->input_clock = ADV7511_INPUT_CLOCK_1X; + else if (!strcmp(str, "2x")) + config->input_clock = ADV7511_INPUT_CLOCK_2X; + else if (!strcmp(str, "ddr")) + config->input_clock = ADV7511_INPUT_CLOCK_DDR; + else + return -EINVAL; + + if (config->input_colorspace == HDMI_COLORSPACE_YUV422 || + config->input_clock != ADV7511_INPUT_CLOCK_1X) { + ret = of_property_read_u32(np, "adi,input-style", + &config->input_style); + if (ret) + return ret; + + if (config->input_style < 1 || config->input_style > 3) + return -EINVAL; + + ret = of_property_read_string(np, "adi,input-justification", + &str); + if (ret < 0) + return ret; + + if (!strcmp(str, "left")) + config->input_justification = + ADV7511_INPUT_JUSTIFICATION_LEFT; + else if (!strcmp(str, "evenly")) + config->input_justification = + ADV7511_INPUT_JUSTIFICATION_EVENLY; + else if (!strcmp(str, "right")) + config->input_justification = + ADV7511_INPUT_JUSTIFICATION_RIGHT; + else + return -EINVAL; + + } else { + config->input_style = 1; + config->input_justification = ADV7511_INPUT_JUSTIFICATION_LEFT; + } + + of_property_read_u32(np, "adi,clock-delay", &config->clock_delay); + if (config->clock_delay < -1200 || config->clock_delay > 1600) + return -EINVAL; + + config->embedded_sync = of_property_read_bool(np, "adi,embedded-sync"); + + /* Hardcode the sync pulse configurations for now. */ + config->sync_pulse = ADV7511_INPUT_SYNC_PULSE_NONE; + config->vsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; + config->hsync_polarity = ADV7511_SYNC_POLARITY_PASSTHROUGH; + + return 0; +} + +static const int edid_i2c_addr = 0x7e; +static const int packet_i2c_addr = 0x70; +static const int cec_i2c_addr = 0x78; + +static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) +{ + struct adv7511_link_config link_config; + struct adv7511 *adv7511; + struct device *dev = &i2c->dev; + unsigned int val; + int ret; + + if (!dev->of_node) + return -EINVAL; + + adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL); + if (!adv7511) + return -ENOMEM; + + adv7511->powered = false; + adv7511->status = connector_status_disconnected; + + if (dev->of_node) + adv7511->type = (enum adv7511_type)of_device_get_match_data(dev); + else + adv7511->type = id->driver_data; + + memset(&link_config, 0, sizeof(link_config)); + + if (adv7511->type == ADV7511) + ret = adv7511_parse_dt(dev->of_node, &link_config); + else + ret = adv7533_parse_dt(dev->of_node, adv7511); + if (ret) + return ret; + + /* + * The power down GPIO is optional. If present, toggle it from active to + * inactive to wake up the encoder. + */ + adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH); + if (IS_ERR(adv7511->gpio_pd)) + return PTR_ERR(adv7511->gpio_pd); + + if (adv7511->gpio_pd) { + mdelay(5); + gpiod_set_value_cansleep(adv7511->gpio_pd, 0); + } + + adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config); + if (IS_ERR(adv7511->regmap)) + return PTR_ERR(adv7511->regmap); + + ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val); + if (ret) + return ret; + dev_dbg(dev, "Rev. %d\n", val); + + if (adv7511->type == ADV7511) + ret = regmap_register_patch(adv7511->regmap, + adv7511_fixed_registers, + ARRAY_SIZE(adv7511_fixed_registers)); + else + ret = adv7533_patch_registers(adv7511); + if (ret) + return ret; + + regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, edid_i2c_addr); + regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR, + packet_i2c_addr); + regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR, cec_i2c_addr); + adv7511_packet_disable(adv7511, 0xffff); + + adv7511->i2c_main = i2c; + adv7511->i2c_edid = i2c_new_dummy(i2c->adapter, edid_i2c_addr >> 1); + if (!adv7511->i2c_edid) + return -ENOMEM; + + if (adv7511->type == ADV7533) { + ret = adv7533_init_cec(adv7511); + if (ret) + goto err_i2c_unregister_edid; + } + + if (i2c->irq) { + init_waitqueue_head(&adv7511->wq); + + ret = devm_request_threaded_irq(dev, i2c->irq, NULL, + adv7511_irq_handler, + IRQF_ONESHOT, dev_name(dev), + adv7511); + if (ret) + goto err_unregister_cec; + } + + /* CEC is unused for now */ + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, + ADV7511_CEC_CTRL_POWER_DOWN); + + adv7511_power_off(adv7511); + + i2c_set_clientdata(i2c, adv7511); + + if (adv7511->type == ADV7511) + adv7511_set_link_config(adv7511, &link_config); + + adv7511->bridge.funcs = &adv7511_bridge_funcs; + adv7511->bridge.of_node = dev->of_node; + + ret = drm_bridge_add(&adv7511->bridge); + if (ret) { + dev_err(dev, "failed to add adv7511 bridge\n"); + goto err_unregister_cec; + } + + return 0; + +err_unregister_cec: + adv7533_uninit_cec(adv7511); +err_i2c_unregister_edid: + i2c_unregister_device(adv7511->i2c_edid); + + return ret; +} + +static int adv7511_remove(struct i2c_client *i2c) +{ + struct adv7511 *adv7511 = i2c_get_clientdata(i2c); + + if (adv7511->type == ADV7533) { + adv7533_detach_dsi(adv7511); + adv7533_uninit_cec(adv7511); + } + + drm_bridge_remove(&adv7511->bridge); + + i2c_unregister_device(adv7511->i2c_edid); + + kfree(adv7511->edid); + + return 0; +} + +static const struct i2c_device_id adv7511_i2c_ids[] = { + { "adv7511", ADV7511 }, + { "adv7511w", ADV7511 }, + { "adv7513", ADV7511 }, +#ifdef CONFIG_DRM_I2C_ADV7533 + { "adv7533", ADV7533 }, +#endif + { } +}; +MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids); + +static const struct of_device_id adv7511_of_ids[] = { + { .compatible = "adi,adv7511", .data = (void *)ADV7511 }, + { .compatible = "adi,adv7511w", .data = (void *)ADV7511 }, + { .compatible = "adi,adv7513", .data = (void *)ADV7511 }, +#ifdef CONFIG_DRM_I2C_ADV7533 + { .compatible = "adi,adv7533", .data = (void *)ADV7533 }, +#endif + { } +}; +MODULE_DEVICE_TABLE(of, adv7511_of_ids); + +static struct mipi_dsi_driver adv7533_dsi_driver = { + .driver.name = "adv7533", +}; + +static struct i2c_driver adv7511_driver = { + .driver = { + .name = "adv7511", + .of_match_table = adv7511_of_ids, + }, + .id_table = adv7511_i2c_ids, + .probe = adv7511_probe, + .remove = adv7511_remove, +}; + +static int __init adv7511_init(void) +{ + if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) + mipi_dsi_driver_register(&adv7533_dsi_driver); + + return i2c_add_driver(&adv7511_driver); +} +module_init(adv7511_init); + +static void __exit adv7511_exit(void) +{ + i2c_del_driver(&adv7511_driver); + + if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) + mipi_dsi_driver_unregister(&adv7533_dsi_driver); +} +module_exit(adv7511_exit); + +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); +MODULE_DESCRIPTION("ADV7511 HDMI transmitter driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c new file mode 100644 index 000000000000..5eebd15899b1 --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c @@ -0,0 +1,265 @@ +/* + * Copyright (c) 2016, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/of_graph.h> + +#include "adv7511.h" + +static const struct reg_sequence adv7533_fixed_registers[] = { + { 0x16, 0x20 }, + { 0x9a, 0xe0 }, + { 0xba, 0x70 }, + { 0xde, 0x82 }, + { 0xe4, 0x40 }, + { 0xe5, 0x80 }, +}; + +static const struct reg_sequence adv7533_cec_fixed_registers[] = { + { 0x15, 0xd0 }, + { 0x17, 0xd0 }, + { 0x24, 0x20 }, + { 0x57, 0x11 }, +}; + +static const struct regmap_config adv7533_cec_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_RBTREE, +}; + +static void adv7511_dsi_config_timing_gen(struct adv7511 *adv) +{ + struct mipi_dsi_device *dsi = adv->dsi; + struct drm_display_mode *mode = &adv->curr_mode; + unsigned int hsw, hfp, hbp, vsw, vfp, vbp; + u8 clock_div_by_lanes[] = { 6, 4, 3 }; /* 2, 3, 4 lanes */ + + hsw = mode->hsync_end - mode->hsync_start; + hfp = mode->hsync_start - mode->hdisplay; + hbp = mode->htotal - mode->hsync_end; + vsw = mode->vsync_end - mode->vsync_start; + vfp = mode->vsync_start - mode->vdisplay; + vbp = mode->vtotal - mode->vsync_end; + + /* set pixel clock divider mode */ + regmap_write(adv->regmap_cec, 0x16, + clock_div_by_lanes[dsi->lanes - 2] << 3); + + /* horizontal porch params */ + regmap_write(adv->regmap_cec, 0x28, mode->htotal >> 4); + regmap_write(adv->regmap_cec, 0x29, (mode->htotal << 4) & 0xff); + regmap_write(adv->regmap_cec, 0x2a, hsw >> 4); + regmap_write(adv->regmap_cec, 0x2b, (hsw << 4) & 0xff); + regmap_write(adv->regmap_cec, 0x2c, hfp >> 4); + regmap_write(adv->regmap_cec, 0x2d, (hfp << 4) & 0xff); + regmap_write(adv->regmap_cec, 0x2e, hbp >> 4); + regmap_write(adv->regmap_cec, 0x2f, (hbp << 4) & 0xff); + + /* vertical porch params */ + regmap_write(adv->regmap_cec, 0x30, mode->vtotal >> 4); + regmap_write(adv->regmap_cec, 0x31, (mode->vtotal << 4) & 0xff); + regmap_write(adv->regmap_cec, 0x32, vsw >> 4); + regmap_write(adv->regmap_cec, 0x33, (vsw << 4) & 0xff); + regmap_write(adv->regmap_cec, 0x34, vfp >> 4); + regmap_write(adv->regmap_cec, 0x35, (vfp << 4) & 0xff); + regmap_write(adv->regmap_cec, 0x36, vbp >> 4); + regmap_write(adv->regmap_cec, 0x37, (vbp << 4) & 0xff); +} + +void adv7533_dsi_power_on(struct adv7511 *adv) +{ + struct mipi_dsi_device *dsi = adv->dsi; + + if (adv->use_timing_gen) + adv7511_dsi_config_timing_gen(adv); + + /* set number of dsi lanes */ + regmap_write(adv->regmap_cec, 0x1c, dsi->lanes << 4); + + if (adv->use_timing_gen) { + /* reset internal timing generator */ + regmap_write(adv->regmap_cec, 0x27, 0xcb); + regmap_write(adv->regmap_cec, 0x27, 0x8b); + regmap_write(adv->regmap_cec, 0x27, 0xcb); + } else { + /* disable internal timing generator */ + regmap_write(adv->regmap_cec, 0x27, 0x0b); + } + + /* enable hdmi */ + regmap_write(adv->regmap_cec, 0x03, 0x89); + /* disable test mode */ + regmap_write(adv->regmap_cec, 0x55, 0x00); + + regmap_register_patch(adv->regmap_cec, adv7533_cec_fixed_registers, + ARRAY_SIZE(adv7533_cec_fixed_registers)); +} + +void adv7533_dsi_power_off(struct adv7511 *adv) +{ + /* disable hdmi */ + regmap_write(adv->regmap_cec, 0x03, 0x0b); + /* disable internal timing generator */ + regmap_write(adv->regmap_cec, 0x27, 0x0b); +} + +void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode) +{ + struct mipi_dsi_device *dsi = adv->dsi; + int lanes, ret; + + if (adv->num_dsi_lanes != 4) + return; + + if (mode->clock > 80000) + lanes = 4; + else + lanes = 3; + + if (lanes != dsi->lanes) { + mipi_dsi_detach(dsi); + dsi->lanes = lanes; + ret = mipi_dsi_attach(dsi); + if (ret) + dev_err(&dsi->dev, "failed to change host lanes\n"); + } +} + +int adv7533_patch_registers(struct adv7511 *adv) +{ + return regmap_register_patch(adv->regmap, + adv7533_fixed_registers, + ARRAY_SIZE(adv7533_fixed_registers)); +} + +void adv7533_uninit_cec(struct adv7511 *adv) +{ + i2c_unregister_device(adv->i2c_cec); +} + +static const int cec_i2c_addr = 0x78; + +int adv7533_init_cec(struct adv7511 *adv) +{ + int ret; + + adv->i2c_cec = i2c_new_dummy(adv->i2c_main->adapter, cec_i2c_addr >> 1); + if (!adv->i2c_cec) + return -ENOMEM; + + adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, + &adv7533_cec_regmap_config); + if (IS_ERR(adv->regmap_cec)) { + ret = PTR_ERR(adv->regmap_cec); + goto err; + } + + ret = regmap_register_patch(adv->regmap_cec, + adv7533_cec_fixed_registers, + ARRAY_SIZE(adv7533_cec_fixed_registers)); + if (ret) + goto err; + + return 0; +err: + adv7533_uninit_cec(adv); + return ret; +} + +int adv7533_attach_dsi(struct adv7511 *adv) +{ + struct device *dev = &adv->i2c_main->dev; + struct mipi_dsi_host *host; + struct mipi_dsi_device *dsi; + int ret = 0; + const struct mipi_dsi_device_info info = { .type = "adv7533", + .channel = 0, + .node = NULL, + }; + + host = of_find_mipi_dsi_host_by_node(adv->host_node); + if (!host) { + dev_err(dev, "failed to find dsi host\n"); + return -EPROBE_DEFER; + } + + dsi = mipi_dsi_device_register_full(host, &info); + if (IS_ERR(dsi)) { + dev_err(dev, "failed to create dsi device\n"); + ret = PTR_ERR(dsi); + goto err_dsi_device; + } + + adv->dsi = dsi; + + dsi->lanes = adv->num_dsi_lanes; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_EOT_PACKET | MIPI_DSI_MODE_VIDEO_HSE; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "failed to attach dsi to host\n"); + goto err_dsi_attach; + } + + return 0; + +err_dsi_attach: + mipi_dsi_device_unregister(dsi); +err_dsi_device: + return ret; +} + +void adv7533_detach_dsi(struct adv7511 *adv) +{ + mipi_dsi_detach(adv->dsi); + mipi_dsi_device_unregister(adv->dsi); +} + +int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv) +{ + u32 num_lanes; + struct device_node *endpoint; + + of_property_read_u32(np, "adi,dsi-lanes", &num_lanes); + + if (num_lanes < 1 || num_lanes > 4) + return -EINVAL; + + adv->num_dsi_lanes = num_lanes; + + endpoint = of_graph_get_next_endpoint(np, NULL); + if (!endpoint) + return -ENODEV; + + adv->host_node = of_graph_get_remote_port_parent(endpoint); + if (!adv->host_node) { + of_node_put(endpoint); + return -ENODEV; + } + + of_node_put(endpoint); + of_node_put(adv->host_node); + + adv->use_timing_gen = !of_property_read_bool(np, + "adi,disable-timing-generator"); + + /* TODO: Check if these need to be parsed by DT or not */ + adv->rgb = true; + adv->embedded_sync = false; + + return 0; +} diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c index d087b054c360..f9f03bcba0af 100644 --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c @@ -986,16 +986,8 @@ unlock: return num_modes; } -static struct drm_encoder *anx78xx_best_encoder(struct drm_connector *connector) -{ - struct anx78xx *anx78xx = connector_to_anx78xx(connector); - - return anx78xx->bridge.encoder; -} - static const struct drm_connector_helper_funcs anx78xx_connector_helper_funcs = { .get_modes = anx78xx_get_modes, - .best_encoder = anx78xx_best_encoder, }; static enum drm_connector_status anx78xx_detect(struct drm_connector *connector, diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 7699597070a1..32715daf73cb 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -938,7 +938,7 @@ int analogix_dp_get_modes(struct drm_connector *connector) num_modes += drm_panel_get_modes(dp->plat_data->panel); if (dp->plat_data->get_modes) - num_modes += dp->plat_data->get_modes(dp->plat_data); + num_modes += dp->plat_data->get_modes(dp->plat_data, connector); return num_modes; } @@ -1208,6 +1208,7 @@ static int analogix_dp_dt_parse_pdata(struct analogix_dp_device *dp) switch (dp->plat_data->dev_type) { case RK3288_DP: + case RK3399_EDP: /* * Like Rk3288 DisplayPort TRM indicate that "Main link * containing 4 physical lanes of 2.7/1.62 Gbps/lane". diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h index f09275d40f70..b45638043ec4 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -127,10 +127,10 @@ enum analog_power_block { }; enum dp_irq_type { - DP_IRQ_TYPE_HP_CABLE_IN, - DP_IRQ_TYPE_HP_CABLE_OUT, - DP_IRQ_TYPE_HP_CHANGE, - DP_IRQ_TYPE_UNKNOWN, + DP_IRQ_TYPE_HP_CABLE_IN = BIT(0), + DP_IRQ_TYPE_HP_CABLE_OUT = BIT(1), + DP_IRQ_TYPE_HP_CHANGE = BIT(2), + DP_IRQ_TYPE_UNKNOWN = BIT(3), }; struct video_info { diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index 49205ef02be3..48030f0cf497 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -74,8 +74,12 @@ void analogix_dp_init_analog_param(struct analogix_dp_device *dp) reg = SEL_24M | TX_DVDD_BIT_1_0625V; writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_2); - if (dp->plat_data && (dp->plat_data->dev_type == RK3288_DP)) { - writel(REF_CLK_24M, dp->reg_base + ANALOGIX_DP_PLL_REG_1); + if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) { + reg = REF_CLK_24M; + if (dp->plat_data->dev_type == RK3288_DP) + reg ^= REF_CLK_MASK; + + writel(reg, dp->reg_base + ANALOGIX_DP_PLL_REG_1); writel(0x95, dp->reg_base + ANALOGIX_DP_PLL_REG_2); writel(0x40, dp->reg_base + ANALOGIX_DP_PLL_REG_3); writel(0x58, dp->reg_base + ANALOGIX_DP_PLL_REG_4); @@ -244,7 +248,7 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp, u32 reg; u32 phy_pd_addr = ANALOGIX_DP_PHY_PD; - if (dp->plat_data && (dp->plat_data->dev_type == RK3288_DP)) + if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) phy_pd_addr = ANALOGIX_DP_PD; switch (block) { @@ -448,7 +452,7 @@ void analogix_dp_init_aux(struct analogix_dp_device *dp) analogix_dp_reset_aux(dp); /* Disable AUX transaction H/W retry */ - if (dp->plat_data && (dp->plat_data->dev_type == RK3288_DP)) + if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) reg = AUX_BIT_PERIOD_EXPECTED_DELAY(0) | AUX_HW_RETRY_COUNT_SEL(3) | AUX_HW_RETRY_INTERVAL_600_MICROSECONDS; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h index 337912b0aeab..cdcc6c5add5e 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h @@ -163,8 +163,9 @@ #define HSYNC_POLARITY_CFG (0x1 << 0) /* ANALOGIX_DP_PLL_REG_1 */ -#define REF_CLK_24M (0x1 << 1) -#define REF_CLK_27M (0x0 << 1) +#define REF_CLK_24M (0x1 << 0) +#define REF_CLK_27M (0x0 << 0) +#define REF_CLK_MASK (0x1 << 0) /* ANALOGIX_DP_LANE_MAP */ #define LANE3_MAP_LOGIC_LANE_0 (0x0 << 6) diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c index c9d941283d30..77ab47341658 100644 --- a/drivers/gpu/drm/bridge/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/dw-hdmi.c @@ -1476,15 +1476,6 @@ dw_hdmi_connector_mode_valid(struct drm_connector *connector, return mode_status; } -static struct drm_encoder *dw_hdmi_connector_best_encoder(struct drm_connector - *connector) -{ - struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, - connector); - - return hdmi->encoder; -} - static void dw_hdmi_connector_destroy(struct drm_connector *connector) { drm_connector_unregister(connector); @@ -1504,14 +1495,6 @@ static void dw_hdmi_connector_force(struct drm_connector *connector) } static const struct drm_connector_funcs dw_hdmi_connector_funcs = { - .dpms = drm_helper_connector_dpms, - .fill_modes = drm_helper_probe_single_connector_modes, - .detect = dw_hdmi_connector_detect, - .destroy = dw_hdmi_connector_destroy, - .force = dw_hdmi_connector_force, -}; - -static const struct drm_connector_funcs dw_hdmi_atomic_connector_funcs = { .dpms = drm_atomic_helper_connector_dpms, .fill_modes = drm_helper_probe_single_connector_modes, .detect = dw_hdmi_connector_detect, @@ -1525,7 +1508,7 @@ static const struct drm_connector_funcs dw_hdmi_atomic_connector_funcs = { static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = { .get_modes = dw_hdmi_connector_get_modes, .mode_valid = dw_hdmi_connector_mode_valid, - .best_encoder = dw_hdmi_connector_best_encoder, + .best_encoder = drm_atomic_helper_best_encoder, }; static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = { @@ -1643,14 +1626,9 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi) drm_connector_helper_add(&hdmi->connector, &dw_hdmi_connector_helper_funcs); - if (drm_core_check_feature(drm, DRIVER_ATOMIC)) - drm_connector_init(drm, &hdmi->connector, - &dw_hdmi_atomic_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA); - else - drm_connector_init(drm, &hdmi->connector, - &dw_hdmi_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA); + drm_connector_init(drm, &hdmi->connector, + &dw_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA); drm_mode_connector_attach_encoder(&hdmi->connector, encoder); diff --git a/drivers/gpu/drm/bridge/nxp-ptn3460.c b/drivers/gpu/drm/bridge/nxp-ptn3460.c index 7ecd59f70b8e..93f3dacf9e27 100644 --- a/drivers/gpu/drm/bridge/nxp-ptn3460.c +++ b/drivers/gpu/drm/bridge/nxp-ptn3460.c @@ -235,16 +235,8 @@ out: return num_modes; } -static struct drm_encoder *ptn3460_best_encoder(struct drm_connector *connector) -{ - struct ptn3460_bridge *ptn_bridge = connector_to_ptn3460(connector); - - return ptn_bridge->bridge.encoder; -} - static const struct drm_connector_helper_funcs ptn3460_connector_helper_funcs = { .get_modes = ptn3460_get_modes, - .best_encoder = ptn3460_best_encoder, }; static enum drm_connector_status ptn3460_detect(struct drm_connector *connector, diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c index be881e9fef8f..583b8ce614e3 100644 --- a/drivers/gpu/drm/bridge/parade-ps8622.c +++ b/drivers/gpu/drm/bridge/parade-ps8622.c @@ -474,18 +474,8 @@ static int ps8622_get_modes(struct drm_connector *connector) return drm_panel_get_modes(ps8622->panel); } -static struct drm_encoder *ps8622_best_encoder(struct drm_connector *connector) -{ - struct ps8622_bridge *ps8622; - - ps8622 = connector_to_ps8622(connector); - - return ps8622->bridge.encoder; -} - static const struct drm_connector_helper_funcs ps8622_connector_helper_funcs = { .get_modes = ps8622_get_modes, - .best_encoder = ps8622_best_encoder, }; static enum drm_connector_status ps8622_detect(struct drm_connector *connector, @@ -646,9 +636,7 @@ static int ps8622_remove(struct i2c_client *client) { struct ps8622_bridge *ps8622 = i2c_get_clientdata(client); - if (ps8622->bl) - backlight_device_unregister(ps8622->bl); - + backlight_device_unregister(ps8622->bl); drm_bridge_remove(&ps8622->bridge); return 0; diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c new file mode 100644 index 000000000000..9126d0306ab5 --- /dev/null +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -0,0 +1,467 @@ +/* + * Copyright (C) 2016 Atmel + * Bo Shen <voice.shen@atmel.com> + * + * Authors: Bo Shen <voice.shen@atmel.com> + * Boris Brezillon <boris.brezillon@free-electrons.com> + * Wu, Songjun <Songjun.Wu@atmel.com> + * + * + * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> + +#include <drm/drmP.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_edid.h> + +#define SII902X_TPI_VIDEO_DATA 0x0 + +#define SII902X_TPI_PIXEL_REPETITION 0x8 +#define SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT BIT(5) +#define SII902X_TPI_AVI_PIXEL_REP_RISING_EDGE BIT(4) +#define SII902X_TPI_AVI_PIXEL_REP_4X 3 +#define SII902X_TPI_AVI_PIXEL_REP_2X 1 +#define SII902X_TPI_AVI_PIXEL_REP_NONE 0 +#define SII902X_TPI_CLK_RATIO_HALF (0 << 6) +#define SII902X_TPI_CLK_RATIO_1X (1 << 6) +#define SII902X_TPI_CLK_RATIO_2X (2 << 6) +#define SII902X_TPI_CLK_RATIO_4X (3 << 6) + +#define SII902X_TPI_AVI_IN_FORMAT 0x9 +#define SII902X_TPI_AVI_INPUT_BITMODE_12BIT BIT(7) +#define SII902X_TPI_AVI_INPUT_DITHER BIT(6) +#define SII902X_TPI_AVI_INPUT_RANGE_LIMITED (2 << 2) +#define SII902X_TPI_AVI_INPUT_RANGE_FULL (1 << 2) +#define SII902X_TPI_AVI_INPUT_RANGE_AUTO (0 << 2) +#define SII902X_TPI_AVI_INPUT_COLORSPACE_BLACK (3 << 0) +#define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV422 (2 << 0) +#define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV444 (1 << 0) +#define SII902X_TPI_AVI_INPUT_COLORSPACE_RGB (0 << 0) + +#define SII902X_TPI_AVI_INFOFRAME 0x0c + +#define SII902X_SYS_CTRL_DATA 0x1a +#define SII902X_SYS_CTRL_PWR_DWN BIT(4) +#define SII902X_SYS_CTRL_AV_MUTE BIT(3) +#define SII902X_SYS_CTRL_DDC_BUS_REQ BIT(2) +#define SII902X_SYS_CTRL_DDC_BUS_GRTD BIT(1) +#define SII902X_SYS_CTRL_OUTPUT_MODE BIT(0) +#define SII902X_SYS_CTRL_OUTPUT_HDMI 1 +#define SII902X_SYS_CTRL_OUTPUT_DVI 0 + +#define SII902X_REG_CHIPID(n) (0x1b + (n)) + +#define SII902X_PWR_STATE_CTRL 0x1e +#define SII902X_AVI_POWER_STATE_MSK GENMASK(1, 0) +#define SII902X_AVI_POWER_STATE_D(l) ((l) & SII902X_AVI_POWER_STATE_MSK) + +#define SII902X_INT_ENABLE 0x3c +#define SII902X_INT_STATUS 0x3d +#define SII902X_HOTPLUG_EVENT BIT(0) +#define SII902X_PLUGGED_STATUS BIT(2) + +#define SII902X_REG_TPI_RQB 0xc7 + +#define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500 + +struct sii902x { + struct i2c_client *i2c; + struct regmap *regmap; + struct drm_bridge bridge; + struct drm_connector connector; + struct gpio_desc *reset_gpio; +}; + +static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge) +{ + return container_of(bridge, struct sii902x, bridge); +} + +static inline struct sii902x *connector_to_sii902x(struct drm_connector *con) +{ + return container_of(con, struct sii902x, connector); +} + +static void sii902x_reset(struct sii902x *sii902x) +{ + if (!sii902x->reset_gpio) + return; + + gpiod_set_value(sii902x->reset_gpio, 1); + + /* The datasheet says treset-min = 100us. Make it 150us to be sure. */ + usleep_range(150, 200); + + gpiod_set_value(sii902x->reset_gpio, 0); +} + +static enum drm_connector_status +sii902x_connector_detect(struct drm_connector *connector, bool force) +{ + struct sii902x *sii902x = connector_to_sii902x(connector); + unsigned int status; + + regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); + + return (status & SII902X_PLUGGED_STATUS) ? + connector_status_connected : connector_status_disconnected; +} + +static const struct drm_connector_funcs sii902x_connector_funcs = { + .dpms = drm_atomic_helper_connector_dpms, + .detect = sii902x_connector_detect, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static int sii902x_get_modes(struct drm_connector *connector) +{ + struct sii902x *sii902x = connector_to_sii902x(connector); + struct regmap *regmap = sii902x->regmap; + u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; + unsigned long timeout; + unsigned int status; + struct edid *edid; + int num = 0; + int ret; + + ret = regmap_update_bits(regmap, SII902X_SYS_CTRL_DATA, + SII902X_SYS_CTRL_DDC_BUS_REQ, + SII902X_SYS_CTRL_DDC_BUS_REQ); + if (ret) + return ret; + + timeout = jiffies + + msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); + do { + ret = regmap_read(regmap, SII902X_SYS_CTRL_DATA, &status); + if (ret) + return ret; + } while (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD) && + time_before(jiffies, timeout)); + + if (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD)) { + dev_err(&sii902x->i2c->dev, "failed to acquire the i2c bus"); + return -ETIMEDOUT; + } + + ret = regmap_write(regmap, SII902X_SYS_CTRL_DATA, status); + if (ret) + return ret; + + edid = drm_get_edid(connector, sii902x->i2c->adapter); + drm_mode_connector_update_edid_property(connector, edid); + if (edid) { + num = drm_add_edid_modes(connector, edid); + kfree(edid); + } + + ret = drm_display_info_set_bus_formats(&connector->display_info, + &bus_format, 1); + if (ret) + return ret; + + ret = regmap_read(regmap, SII902X_SYS_CTRL_DATA, &status); + if (ret) + return ret; + + ret = regmap_update_bits(regmap, SII902X_SYS_CTRL_DATA, + SII902X_SYS_CTRL_DDC_BUS_REQ | + SII902X_SYS_CTRL_DDC_BUS_GRTD, 0); + if (ret) + return ret; + + timeout = jiffies + + msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); + do { + ret = regmap_read(regmap, SII902X_SYS_CTRL_DATA, &status); + if (ret) + return ret; + } while (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | + SII902X_SYS_CTRL_DDC_BUS_GRTD) && + time_before(jiffies, timeout)); + + if (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | + SII902X_SYS_CTRL_DDC_BUS_GRTD)) { + dev_err(&sii902x->i2c->dev, "failed to release the i2c bus"); + return -ETIMEDOUT; + } + + return num; +} + +static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + /* TODO: check mode */ + + return MODE_OK; +} + +static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = { + .get_modes = sii902x_get_modes, + .mode_valid = sii902x_mode_valid, +}; + +static void sii902x_bridge_disable(struct drm_bridge *bridge) +{ + struct sii902x *sii902x = bridge_to_sii902x(bridge); + + regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, + SII902X_SYS_CTRL_PWR_DWN, + SII902X_SYS_CTRL_PWR_DWN); +} + +static void sii902x_bridge_enable(struct drm_bridge *bridge) +{ + struct sii902x *sii902x = bridge_to_sii902x(bridge); + + regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL, + SII902X_AVI_POWER_STATE_MSK, + SII902X_AVI_POWER_STATE_D(0)); + regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, + SII902X_SYS_CTRL_PWR_DWN, 0); +} + +static void sii902x_bridge_mode_set(struct drm_bridge *bridge, + struct drm_display_mode *mode, + struct drm_display_mode *adj) +{ + struct sii902x *sii902x = bridge_to_sii902x(bridge); + struct regmap *regmap = sii902x->regmap; + u8 buf[HDMI_INFOFRAME_SIZE(AVI)]; + struct hdmi_avi_infoframe frame; + int ret; + + buf[0] = adj->clock; + buf[1] = adj->clock >> 8; + buf[2] = adj->vrefresh; + buf[3] = 0x00; + buf[4] = adj->hdisplay; + buf[5] = adj->hdisplay >> 8; + buf[6] = adj->vdisplay; + buf[7] = adj->vdisplay >> 8; + buf[8] = SII902X_TPI_CLK_RATIO_1X | SII902X_TPI_AVI_PIXEL_REP_NONE | + SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT; + buf[9] = SII902X_TPI_AVI_INPUT_RANGE_AUTO | + SII902X_TPI_AVI_INPUT_COLORSPACE_RGB; + + ret = regmap_bulk_write(regmap, SII902X_TPI_VIDEO_DATA, buf, 10); + if (ret) + return; + + ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, adj); + if (ret < 0) { + DRM_ERROR("couldn't fill AVI infoframe\n"); + return; + } + + ret = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf)); + if (ret < 0) { + DRM_ERROR("failed to pack AVI infoframe: %d\n", ret); + return; + } + + /* Do not send the infoframe header, but keep the CRC field. */ + regmap_bulk_write(regmap, SII902X_TPI_AVI_INFOFRAME, + buf + HDMI_INFOFRAME_HEADER_SIZE - 1, + HDMI_AVI_INFOFRAME_SIZE + 1); +} + +static int sii902x_bridge_attach(struct drm_bridge *bridge) +{ + struct sii902x *sii902x = bridge_to_sii902x(bridge); + struct drm_device *drm = bridge->dev; + int ret; + + drm_connector_helper_add(&sii902x->connector, + &sii902x_connector_helper_funcs); + + if (!drm_core_check_feature(drm, DRIVER_ATOMIC)) { + dev_err(&sii902x->i2c->dev, + "sii902x driver is only compatible with DRM devices supporting atomic updates"); + return -ENOTSUPP; + } + + ret = drm_connector_init(drm, &sii902x->connector, + &sii902x_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA); + if (ret) + return ret; + + if (sii902x->i2c->irq > 0) + sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD; + else + sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT; + + drm_mode_connector_attach_encoder(&sii902x->connector, bridge->encoder); + + return 0; +} + +static const struct drm_bridge_funcs sii902x_bridge_funcs = { + .attach = sii902x_bridge_attach, + .mode_set = sii902x_bridge_mode_set, + .disable = sii902x_bridge_disable, + .enable = sii902x_bridge_enable, +}; + +static const struct regmap_range sii902x_volatile_ranges[] = { + { .range_min = 0, .range_max = 0xff }, +}; + +static const struct regmap_access_table sii902x_volatile_table = { + .yes_ranges = sii902x_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(sii902x_volatile_ranges), +}; + +static const struct regmap_config sii902x_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_table = &sii902x_volatile_table, + .cache_type = REGCACHE_NONE, +}; + +static irqreturn_t sii902x_interrupt(int irq, void *data) +{ + struct sii902x *sii902x = data; + unsigned int status = 0; + + regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); + regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); + + if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) + drm_helper_hpd_irq_event(sii902x->bridge.dev); + + return IRQ_HANDLED; +} + +static int sii902x_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + unsigned int status = 0; + struct sii902x *sii902x; + u8 chipid[4]; + int ret; + + sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); + if (!sii902x) + return -ENOMEM; + + sii902x->i2c = client; + sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); + if (IS_ERR(sii902x->regmap)) + return PTR_ERR(sii902x->regmap); + + sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(sii902x->reset_gpio)) { + dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", + PTR_ERR(sii902x->reset_gpio)); + return PTR_ERR(sii902x->reset_gpio); + } + + sii902x_reset(sii902x); + + ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0); + if (ret) + return ret; + + ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0), + &chipid, 4); + if (ret) { + dev_err(dev, "regmap_read failed %d\n", ret); + return ret; + } + + if (chipid[0] != 0xb0) { + dev_err(dev, "Invalid chipid: %02x (expecting 0xb0)\n", + chipid[0]); + return -EINVAL; + } + + /* Clear all pending interrupts */ + regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); + regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); + + if (client->irq > 0) { + regmap_write(sii902x->regmap, SII902X_INT_ENABLE, + SII902X_HOTPLUG_EVENT); + + ret = devm_request_threaded_irq(dev, client->irq, NULL, + sii902x_interrupt, + IRQF_ONESHOT, dev_name(dev), + sii902x); + if (ret) + return ret; + } + + sii902x->bridge.funcs = &sii902x_bridge_funcs; + sii902x->bridge.of_node = dev->of_node; + ret = drm_bridge_add(&sii902x->bridge); + if (ret) { + dev_err(dev, "Failed to add drm_bridge\n"); + return ret; + } + + i2c_set_clientdata(client, sii902x); + + return 0; +} + +static int sii902x_remove(struct i2c_client *client) + +{ + struct sii902x *sii902x = i2c_get_clientdata(client); + + drm_bridge_remove(&sii902x->bridge); + + return 0; +} + +static const struct of_device_id sii902x_dt_ids[] = { + { .compatible = "sil,sii9022", }, + { } +}; +MODULE_DEVICE_TABLE(of, sii902x_dt_ids); + +static const struct i2c_device_id sii902x_i2c_ids[] = { + { "sii9022", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids); + +static struct i2c_driver sii902x_driver = { + .probe = sii902x_probe, + .remove = sii902x_remove, + .driver = { + .name = "sii902x", + .of_match_table = sii902x_dt_ids, + }, + .id_table = sii902x_i2c_ids, +}; +module_i2c_driver(sii902x_driver); + +MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); +MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c new file mode 100644 index 000000000000..a09825d8c94a --- /dev/null +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -0,0 +1,1413 @@ +/* + * tc358767 eDP bridge driver + * + * Copyright (C) 2016 CogentEmbedded Inc + * Author: Andrey Gusakov <andrey.gusakov@cogentembedded.com> + * + * Copyright (C) 2016 Pengutronix, Philipp Zabel <p.zabel@pengutronix.de> + * + * Initially based on: drivers/gpu/drm/i2c/tda998x_drv.c + * + * Copyright (C) 2012 Texas Instruments + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_dp_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_of.h> +#include <drm/drm_panel.h> + +/* Registers */ + +/* Display Parallel Interface */ +#define DPIPXLFMT 0x0440 +#define VS_POL_ACTIVE_LOW (1 << 10) +#define HS_POL_ACTIVE_LOW (1 << 9) +#define DE_POL_ACTIVE_HIGH (0 << 8) +#define SUB_CFG_TYPE_CONFIG1 (0 << 2) /* LSB aligned */ +#define SUB_CFG_TYPE_CONFIG2 (1 << 2) /* Loosely Packed */ +#define SUB_CFG_TYPE_CONFIG3 (2 << 2) /* LSB aligned 8-bit */ +#define DPI_BPP_RGB888 (0 << 0) +#define DPI_BPP_RGB666 (1 << 0) +#define DPI_BPP_RGB565 (2 << 0) + +/* Video Path */ +#define VPCTRL0 0x0450 +#define OPXLFMT_RGB666 (0 << 8) +#define OPXLFMT_RGB888 (1 << 8) +#define FRMSYNC_DISABLED (0 << 4) /* Video Timing Gen Disabled */ +#define FRMSYNC_ENABLED (1 << 4) /* Video Timing Gen Enabled */ +#define MSF_DISABLED (0 << 0) /* Magic Square FRC disabled */ +#define MSF_ENABLED (1 << 0) /* Magic Square FRC enabled */ +#define HTIM01 0x0454 +#define HTIM02 0x0458 +#define VTIM01 0x045c +#define VTIM02 0x0460 +#define VFUEN0 0x0464 +#define VFUEN BIT(0) /* Video Frame Timing Upload */ + +/* System */ +#define TC_IDREG 0x0500 +#define SYSCTRL 0x0510 +#define DP0_AUDSRC_NO_INPUT (0 << 3) +#define DP0_AUDSRC_I2S_RX (1 << 3) +#define DP0_VIDSRC_NO_INPUT (0 << 0) +#define DP0_VIDSRC_DSI_RX (1 << 0) +#define DP0_VIDSRC_DPI_RX (2 << 0) +#define DP0_VIDSRC_COLOR_BAR (3 << 0) + +/* Control */ +#define DP0CTL 0x0600 +#define VID_MN_GEN BIT(6) /* Auto-generate M/N values */ +#define EF_EN BIT(5) /* Enable Enhanced Framing */ +#define VID_EN BIT(1) /* Video transmission enable */ +#define DP_EN BIT(0) /* Enable DPTX function */ + +/* Clocks */ +#define DP0_VIDMNGEN0 0x0610 +#define DP0_VIDMNGEN1 0x0614 +#define DP0_VMNGENSTATUS 0x0618 + +/* Main Channel */ +#define DP0_SECSAMPLE 0x0640 +#define DP0_VIDSYNCDELAY 0x0644 +#define DP0_TOTALVAL 0x0648 +#define DP0_STARTVAL 0x064c +#define DP0_ACTIVEVAL 0x0650 +#define DP0_SYNCVAL 0x0654 +#define DP0_MISC 0x0658 +#define TU_SIZE_RECOMMENDED (0x3f << 16) /* LSCLK cycles per TU */ +#define BPC_6 (0 << 5) +#define BPC_8 (1 << 5) + +/* AUX channel */ +#define DP0_AUXCFG0 0x0660 +#define DP0_AUXCFG1 0x0664 +#define AUX_RX_FILTER_EN BIT(16) + +#define DP0_AUXADDR 0x0668 +#define DP0_AUXWDATA(i) (0x066c + (i) * 4) +#define DP0_AUXRDATA(i) (0x067c + (i) * 4) +#define DP0_AUXSTATUS 0x068c +#define AUX_STATUS_MASK 0xf0 +#define AUX_STATUS_SHIFT 4 +#define AUX_TIMEOUT BIT(1) +#define AUX_BUSY BIT(0) +#define DP0_AUXI2CADR 0x0698 + +/* Link Training */ +#define DP0_SRCCTRL 0x06a0 +#define DP0_SRCCTRL_SCRMBLDIS BIT(13) +#define DP0_SRCCTRL_EN810B BIT(12) +#define DP0_SRCCTRL_NOTP (0 << 8) +#define DP0_SRCCTRL_TP1 (1 << 8) +#define DP0_SRCCTRL_TP2 (2 << 8) +#define DP0_SRCCTRL_LANESKEW BIT(7) +#define DP0_SRCCTRL_SSCG BIT(3) +#define DP0_SRCCTRL_LANES_1 (0 << 2) +#define DP0_SRCCTRL_LANES_2 (1 << 2) +#define DP0_SRCCTRL_BW27 (1 << 1) +#define DP0_SRCCTRL_BW162 (0 << 1) +#define DP0_SRCCTRL_AUTOCORRECT BIT(0) +#define DP0_LTSTAT 0x06d0 +#define LT_LOOPDONE BIT(13) +#define LT_STATUS_MASK (0x1f << 8) +#define LT_CHANNEL1_EQ_BITS (DP_CHANNEL_EQ_BITS << 4) +#define LT_INTERLANE_ALIGN_DONE BIT(3) +#define LT_CHANNEL0_EQ_BITS (DP_CHANNEL_EQ_BITS) +#define DP0_SNKLTCHGREQ 0x06d4 +#define DP0_LTLOOPCTRL 0x06d8 +#define DP0_SNKLTCTRL 0x06e4 + +/* PHY */ +#define DP_PHY_CTRL 0x0800 +#define DP_PHY_RST BIT(28) /* DP PHY Global Soft Reset */ +#define BGREN BIT(25) /* AUX PHY BGR Enable */ +#define PWR_SW_EN BIT(24) /* PHY Power Switch Enable */ +#define PHY_M1_RST BIT(12) /* Reset PHY1 Main Channel */ +#define PHY_RDY BIT(16) /* PHY Main Channels Ready */ +#define PHY_M0_RST BIT(8) /* Reset PHY0 Main Channel */ +#define PHY_A0_EN BIT(1) /* PHY Aux Channel0 Enable */ +#define PHY_M0_EN BIT(0) /* PHY Main Channel0 Enable */ + +/* PLL */ +#define DP0_PLLCTRL 0x0900 +#define DP1_PLLCTRL 0x0904 /* not defined in DS */ +#define PXL_PLLCTRL 0x0908 +#define PLLUPDATE BIT(2) +#define PLLBYP BIT(1) +#define PLLEN BIT(0) +#define PXL_PLLPARAM 0x0914 +#define IN_SEL_REFCLK (0 << 14) +#define SYS_PLLPARAM 0x0918 +#define REF_FREQ_38M4 (0 << 8) /* 38.4 MHz */ +#define REF_FREQ_19M2 (1 << 8) /* 19.2 MHz */ +#define REF_FREQ_26M (2 << 8) /* 26 MHz */ +#define REF_FREQ_13M (3 << 8) /* 13 MHz */ +#define SYSCLK_SEL_LSCLK (0 << 4) +#define LSCLK_DIV_1 (0 << 0) +#define LSCLK_DIV_2 (1 << 0) + +/* Test & Debug */ +#define TSTCTL 0x0a00 +#define PLL_DBG 0x0a04 + +static bool tc_test_pattern; +module_param_named(test, tc_test_pattern, bool, 0644); + +struct tc_edp_link { + struct drm_dp_link base; + u8 assr; + int scrambler_dis; + int spread; + int coding8b10b; + u8 swing; + u8 preemp; +}; + +struct tc_data { + struct device *dev; + struct regmap *regmap; + struct drm_dp_aux aux; + + struct drm_bridge bridge; + struct drm_connector connector; + struct drm_panel *panel; + + /* link settings */ + struct tc_edp_link link; + + /* display edid */ + struct edid *edid; + /* current mode */ + struct drm_display_mode *mode; + + u32 rev; + u8 assr; + + struct gpio_desc *sd_gpio; + struct gpio_desc *reset_gpio; + struct clk *refclk; +}; + +static inline struct tc_data *aux_to_tc(struct drm_dp_aux *a) +{ + return container_of(a, struct tc_data, aux); +} + +static inline struct tc_data *bridge_to_tc(struct drm_bridge *b) +{ + return container_of(b, struct tc_data, bridge); +} + +static inline struct tc_data *connector_to_tc(struct drm_connector *c) +{ + return container_of(c, struct tc_data, connector); +} + +/* Simple macros to avoid repeated error checks */ +#define tc_write(reg, var) \ + do { \ + ret = regmap_write(tc->regmap, reg, var); \ + if (ret) \ + goto err; \ + } while (0) +#define tc_read(reg, var) \ + do { \ + ret = regmap_read(tc->regmap, reg, var); \ + if (ret) \ + goto err; \ + } while (0) + +static inline int tc_poll_timeout(struct regmap *map, unsigned int addr, + unsigned int cond_mask, + unsigned int cond_value, + unsigned long sleep_us, u64 timeout_us) +{ + ktime_t timeout = ktime_add_us(ktime_get(), timeout_us); + unsigned int val; + int ret; + + for (;;) { + ret = regmap_read(map, addr, &val); + if (ret) + break; + if ((val & cond_mask) == cond_value) + break; + if (timeout_us && ktime_compare(ktime_get(), timeout) > 0) { + ret = regmap_read(map, addr, &val); + break; + } + if (sleep_us) + usleep_range((sleep_us >> 2) + 1, sleep_us); + } + return ret ?: (((val & cond_mask) == cond_value) ? 0 : -ETIMEDOUT); +} + +static int tc_aux_wait_busy(struct tc_data *tc, unsigned int timeout_ms) +{ + return tc_poll_timeout(tc->regmap, DP0_AUXSTATUS, AUX_BUSY, 0, + 1000, 1000 * timeout_ms); +} + +static int tc_aux_get_status(struct tc_data *tc, u8 *reply) +{ + int ret; + u32 value; + + ret = regmap_read(tc->regmap, DP0_AUXSTATUS, &value); + if (ret < 0) + return ret; + if (value & AUX_BUSY) { + if (value & AUX_TIMEOUT) { + dev_err(tc->dev, "i2c access timeout!\n"); + return -ETIMEDOUT; + } + return -EBUSY; + } + + *reply = (value & AUX_STATUS_MASK) >> AUX_STATUS_SHIFT; + return 0; +} + +static ssize_t tc_aux_transfer(struct drm_dp_aux *aux, + struct drm_dp_aux_msg *msg) +{ + struct tc_data *tc = aux_to_tc(aux); + size_t size = min_t(size_t, 8, msg->size); + u8 request = msg->request & ~DP_AUX_I2C_MOT; + u8 *buf = msg->buffer; + u32 tmp = 0; + int i = 0; + int ret; + + if (size == 0) + return 0; + + ret = tc_aux_wait_busy(tc, 100); + if (ret) + goto err; + + if (request == DP_AUX_I2C_WRITE || request == DP_AUX_NATIVE_WRITE) { + /* Store data */ + while (i < size) { + if (request == DP_AUX_NATIVE_WRITE) + tmp = tmp | (buf[i] << (8 * (i & 0x3))); + else + tmp = (tmp << 8) | buf[i]; + i++; + if (((i % 4) == 0) || (i == size)) { + tc_write(DP0_AUXWDATA(i >> 2), tmp); + tmp = 0; + } + } + } else if (request != DP_AUX_I2C_READ && + request != DP_AUX_NATIVE_READ) { + return -EINVAL; + } + + /* Store address */ + tc_write(DP0_AUXADDR, msg->address); + /* Start transfer */ + tc_write(DP0_AUXCFG0, ((size - 1) << 8) | request); + + ret = tc_aux_wait_busy(tc, 100); + if (ret) + goto err; + + ret = tc_aux_get_status(tc, &msg->reply); + if (ret) + goto err; + + if (request == DP_AUX_I2C_READ || request == DP_AUX_NATIVE_READ) { + /* Read data */ + while (i < size) { + if ((i % 4) == 0) + tc_read(DP0_AUXRDATA(i >> 2), &tmp); + buf[i] = tmp & 0xff; + tmp = tmp >> 8; + i++; + } + } + + return size; +err: + return ret; +} + +static const char * const training_pattern1_errors[] = { + "No errors", + "Aux write error", + "Aux read error", + "Max voltage reached error", + "Loop counter expired error", + "res", "res", "res" +}; + +static const char * const training_pattern2_errors[] = { + "No errors", + "Aux write error", + "Aux read error", + "Clock recovery failed error", + "Loop counter expired error", + "res", "res", "res" +}; + +static u32 tc_srcctrl(struct tc_data *tc) +{ + /* + * No training pattern, skew lane 1 data by two LSCLK cycles with + * respect to lane 0 data, AutoCorrect Mode = 0 + */ + u32 reg = DP0_SRCCTRL_NOTP | DP0_SRCCTRL_LANESKEW; + + if (tc->link.scrambler_dis) + reg |= DP0_SRCCTRL_SCRMBLDIS; /* Scrambler Disabled */ + if (tc->link.coding8b10b) + /* Enable 8/10B Encoder (TxData[19:16] not used) */ + reg |= DP0_SRCCTRL_EN810B; + if (tc->link.spread) + reg |= DP0_SRCCTRL_SSCG; /* Spread Spectrum Enable */ + if (tc->link.base.num_lanes == 2) + reg |= DP0_SRCCTRL_LANES_2; /* Two Main Channel Lanes */ + if (tc->link.base.rate != 162000) + reg |= DP0_SRCCTRL_BW27; /* 2.7 Gbps link */ + return reg; +} + +static void tc_wait_pll_lock(struct tc_data *tc) +{ + /* Wait for PLL to lock: up to 2.09 ms, depending on refclk */ + usleep_range(3000, 6000); +} + +static int tc_pxl_pll_en(struct tc_data *tc, u32 refclk, u32 pixelclock) +{ + int ret; + int i_pre, best_pre = 1; + int i_post, best_post = 1; + int div, best_div = 1; + int mul, best_mul = 1; + int delta, best_delta; + int ext_div[] = {1, 2, 3, 5, 7}; + int best_pixelclock = 0; + int vco_hi = 0; + + dev_dbg(tc->dev, "PLL: requested %d pixelclock, ref %d\n", pixelclock, + refclk); + best_delta = pixelclock; + /* Loop over all possible ext_divs, skipping invalid configurations */ + for (i_pre = 0; i_pre < ARRAY_SIZE(ext_div); i_pre++) { + /* + * refclk / ext_pre_div should be in the 1 to 200 MHz range. + * We don't allow any refclk > 200 MHz, only check lower bounds. + */ + if (refclk / ext_div[i_pre] < 1000000) + continue; + for (i_post = 0; i_post < ARRAY_SIZE(ext_div); i_post++) { + for (div = 1; div <= 16; div++) { + u32 clk; + u64 tmp; + + tmp = pixelclock * ext_div[i_pre] * + ext_div[i_post] * div; + do_div(tmp, refclk); + mul = tmp; + + /* Check limits */ + if ((mul < 1) || (mul > 128)) + continue; + + clk = (refclk / ext_div[i_pre] / div) * mul; + /* + * refclk * mul / (ext_pre_div * pre_div) + * should be in the 150 to 650 MHz range + */ + if ((clk > 650000000) || (clk < 150000000)) + continue; + + clk = clk / ext_div[i_post]; + delta = clk - pixelclock; + + if (abs(delta) < abs(best_delta)) { + best_pre = i_pre; + best_post = i_post; + best_div = div; + best_mul = mul; + best_delta = delta; + best_pixelclock = clk; + } + } + } + } + if (best_pixelclock == 0) { + dev_err(tc->dev, "Failed to calc clock for %d pixelclock\n", + pixelclock); + return -EINVAL; + } + + dev_dbg(tc->dev, "PLL: got %d, delta %d\n", best_pixelclock, + best_delta); + dev_dbg(tc->dev, "PLL: %d / %d / %d * %d / %d\n", refclk, + ext_div[best_pre], best_div, best_mul, ext_div[best_post]); + + /* if VCO >= 300 MHz */ + if (refclk / ext_div[best_pre] / best_div * best_mul >= 300000000) + vco_hi = 1; + /* see DS */ + if (best_div == 16) + best_div = 0; + if (best_mul == 128) + best_mul = 0; + + /* Power up PLL and switch to bypass */ + tc_write(PXL_PLLCTRL, PLLBYP | PLLEN); + + tc_write(PXL_PLLPARAM, + (vco_hi << 24) | /* For PLL VCO >= 300 MHz = 1 */ + (ext_div[best_pre] << 20) | /* External Pre-divider */ + (ext_div[best_post] << 16) | /* External Post-divider */ + IN_SEL_REFCLK | /* Use RefClk as PLL input */ + (best_div << 8) | /* Divider for PLL RefClk */ + (best_mul << 0)); /* Multiplier for PLL */ + + /* Force PLL parameter update and disable bypass */ + tc_write(PXL_PLLCTRL, PLLUPDATE | PLLEN); + + tc_wait_pll_lock(tc); + + return 0; +err: + return ret; +} + +static int tc_pxl_pll_dis(struct tc_data *tc) +{ + /* Enable PLL bypass, power down PLL */ + return regmap_write(tc->regmap, PXL_PLLCTRL, PLLBYP); +} + +static int tc_stream_clock_calc(struct tc_data *tc) +{ + int ret; + /* + * If the Stream clock and Link Symbol clock are + * asynchronous with each other, the value of M changes over + * time. This way of generating link clock and stream + * clock is called Asynchronous Clock mode. The value M + * must change while the value N stays constant. The + * value of N in this Asynchronous Clock mode must be set + * to 2^15 or 32,768. + * + * LSCLK = 1/10 of high speed link clock + * + * f_STRMCLK = M/N * f_LSCLK + * M/N = f_STRMCLK / f_LSCLK + * + */ + tc_write(DP0_VIDMNGEN1, 32768); + + return 0; +err: + return ret; +} + +static int tc_aux_link_setup(struct tc_data *tc) +{ + unsigned long rate; + u32 value; + int ret; + + rate = clk_get_rate(tc->refclk); + switch (rate) { + case 38400000: + value = REF_FREQ_38M4; + break; + case 26000000: + value = REF_FREQ_26M; + break; + case 19200000: + value = REF_FREQ_19M2; + break; + case 13000000: + value = REF_FREQ_13M; + break; + default: + dev_err(tc->dev, "Invalid refclk rate: %lu Hz\n", rate); + return -EINVAL; + } + + /* Setup DP-PHY / PLL */ + value |= SYSCLK_SEL_LSCLK | LSCLK_DIV_2; + tc_write(SYS_PLLPARAM, value); + + tc_write(DP_PHY_CTRL, BGREN | PWR_SW_EN | BIT(2) | PHY_A0_EN); + + /* + * Initially PLLs are in bypass. Force PLL parameter update, + * disable PLL bypass, enable PLL + */ + tc_write(DP0_PLLCTRL, PLLUPDATE | PLLEN); + tc_wait_pll_lock(tc); + + tc_write(DP1_PLLCTRL, PLLUPDATE | PLLEN); + tc_wait_pll_lock(tc); + + ret = tc_poll_timeout(tc->regmap, DP_PHY_CTRL, PHY_RDY, PHY_RDY, 1, + 1000); + if (ret == -ETIMEDOUT) { + dev_err(tc->dev, "Timeout waiting for PHY to become ready"); + return ret; + } else if (ret) + goto err; + + /* Setup AUX link */ + tc_write(DP0_AUXCFG1, AUX_RX_FILTER_EN | + (0x06 << 8) | /* Aux Bit Period Calculator Threshold */ + (0x3f << 0)); /* Aux Response Timeout Timer */ + + return 0; +err: + dev_err(tc->dev, "tc_aux_link_setup failed: %d\n", ret); + return ret; +} + +static int tc_get_display_props(struct tc_data *tc) +{ + int ret; + /* temp buffer */ + u8 tmp[8]; + + /* Read DP Rx Link Capability */ + ret = drm_dp_link_probe(&tc->aux, &tc->link.base); + if (ret < 0) + goto err_dpcd_read; + if ((tc->link.base.rate != 162000) && (tc->link.base.rate != 270000)) + goto err_dpcd_inval; + + ret = drm_dp_dpcd_readb(&tc->aux, DP_MAX_DOWNSPREAD, tmp); + if (ret < 0) + goto err_dpcd_read; + tc->link.spread = tmp[0] & BIT(0); /* 0.5% down spread */ + + ret = drm_dp_dpcd_readb(&tc->aux, DP_MAIN_LINK_CHANNEL_CODING, tmp); + if (ret < 0) + goto err_dpcd_read; + tc->link.coding8b10b = tmp[0] & BIT(0); + tc->link.scrambler_dis = 0; + /* read assr */ + ret = drm_dp_dpcd_readb(&tc->aux, DP_EDP_CONFIGURATION_SET, tmp); + if (ret < 0) + goto err_dpcd_read; + tc->link.assr = tmp[0] & DP_ALTERNATE_SCRAMBLER_RESET_ENABLE; + + dev_dbg(tc->dev, "DPCD rev: %d.%d, rate: %s, lanes: %d, framing: %s\n", + tc->link.base.revision >> 4, tc->link.base.revision & 0x0f, + (tc->link.base.rate == 162000) ? "1.62Gbps" : "2.7Gbps", + tc->link.base.num_lanes, + (tc->link.base.capabilities & DP_LINK_CAP_ENHANCED_FRAMING) ? + "enhanced" : "non-enhanced"); + dev_dbg(tc->dev, "ANSI 8B/10B: %d\n", tc->link.coding8b10b); + dev_dbg(tc->dev, "Display ASSR: %d, TC358767 ASSR: %d\n", + tc->link.assr, tc->assr); + + return 0; + +err_dpcd_read: + dev_err(tc->dev, "failed to read DPCD: %d\n", ret); + return ret; +err_dpcd_inval: + dev_err(tc->dev, "invalid DPCD\n"); + return -EINVAL; +} + +static int tc_set_video_mode(struct tc_data *tc, struct drm_display_mode *mode) +{ + int ret; + int vid_sync_dly; + int max_tu_symbol; + + int left_margin = mode->htotal - mode->hsync_end; + int right_margin = mode->hsync_start - mode->hdisplay; + int hsync_len = mode->hsync_end - mode->hsync_start; + int upper_margin = mode->vtotal - mode->vsync_end; + int lower_margin = mode->vsync_start - mode->vdisplay; + int vsync_len = mode->vsync_end - mode->vsync_start; + + dev_dbg(tc->dev, "set mode %dx%d\n", + mode->hdisplay, mode->vdisplay); + dev_dbg(tc->dev, "H margin %d,%d sync %d\n", + left_margin, right_margin, hsync_len); + dev_dbg(tc->dev, "V margin %d,%d sync %d\n", + upper_margin, lower_margin, vsync_len); + dev_dbg(tc->dev, "total: %dx%d\n", mode->htotal, mode->vtotal); + + + /* LCD Ctl Frame Size */ + tc_write(VPCTRL0, (0x40 << 20) /* VSDELAY */ | + OPXLFMT_RGB888 | FRMSYNC_DISABLED | MSF_DISABLED); + tc_write(HTIM01, (left_margin << 16) | /* H back porch */ + (hsync_len << 0)); /* Hsync */ + tc_write(HTIM02, (right_margin << 16) | /* H front porch */ + (mode->hdisplay << 0)); /* width */ + tc_write(VTIM01, (upper_margin << 16) | /* V back porch */ + (vsync_len << 0)); /* Vsync */ + tc_write(VTIM02, (lower_margin << 16) | /* V front porch */ + (mode->vdisplay << 0)); /* height */ + tc_write(VFUEN0, VFUEN); /* update settings */ + + /* Test pattern settings */ + tc_write(TSTCTL, + (120 << 24) | /* Red Color component value */ + (20 << 16) | /* Green Color component value */ + (99 << 8) | /* Blue Color component value */ + (1 << 4) | /* Enable I2C Filter */ + (2 << 0) | /* Color bar Mode */ + 0); + + /* DP Main Stream Attributes */ + vid_sync_dly = hsync_len + left_margin + mode->hdisplay; + tc_write(DP0_VIDSYNCDELAY, + (0x003e << 16) | /* thresh_dly */ + (vid_sync_dly << 0)); + + tc_write(DP0_TOTALVAL, (mode->vtotal << 16) | (mode->htotal)); + + tc_write(DP0_STARTVAL, + ((upper_margin + vsync_len) << 16) | + ((left_margin + hsync_len) << 0)); + + tc_write(DP0_ACTIVEVAL, (mode->vdisplay << 16) | (mode->hdisplay)); + + tc_write(DP0_SYNCVAL, (vsync_len << 16) | (hsync_len << 0)); + + tc_write(DPIPXLFMT, VS_POL_ACTIVE_LOW | HS_POL_ACTIVE_LOW | + DE_POL_ACTIVE_HIGH | SUB_CFG_TYPE_CONFIG1 | DPI_BPP_RGB888); + + /* + * Recommended maximum number of symbols transferred in a transfer unit: + * DIV_ROUND_UP((input active video bandwidth in bytes) * tu_size, + * (output active video bandwidth in bytes)) + * Must be less than tu_size. + */ + max_tu_symbol = TU_SIZE_RECOMMENDED - 1; + tc_write(DP0_MISC, (max_tu_symbol << 23) | TU_SIZE_RECOMMENDED | BPC_8); + + return 0; +err: + return ret; +} + +static int tc_link_training(struct tc_data *tc, int pattern) +{ + const char * const *errors; + u32 srcctrl = tc_srcctrl(tc) | DP0_SRCCTRL_SCRMBLDIS | + DP0_SRCCTRL_AUTOCORRECT; + int timeout; + int retry; + u32 value; + int ret; + + if (pattern == DP_TRAINING_PATTERN_1) { + srcctrl |= DP0_SRCCTRL_TP1; + errors = training_pattern1_errors; + } else { + srcctrl |= DP0_SRCCTRL_TP2; + errors = training_pattern2_errors; + } + + /* Set DPCD 0x102 for Training Part 1 or 2 */ + tc_write(DP0_SNKLTCTRL, DP_LINK_SCRAMBLING_DISABLE | pattern); + + tc_write(DP0_LTLOOPCTRL, + (0x0f << 28) | /* Defer Iteration Count */ + (0x0f << 24) | /* Loop Iteration Count */ + (0x0d << 0)); /* Loop Timer Delay */ + + retry = 5; + do { + /* Set DP0 Training Pattern */ + tc_write(DP0_SRCCTRL, srcctrl); + + /* Enable DP0 to start Link Training */ + tc_write(DP0CTL, DP_EN); + + /* wait */ + timeout = 1000; + do { + tc_read(DP0_LTSTAT, &value); + udelay(1); + } while ((!(value & LT_LOOPDONE)) && (--timeout)); + if (timeout == 0) { + dev_err(tc->dev, "Link training timeout!\n"); + } else { + int pattern = (value >> 11) & 0x3; + int error = (value >> 8) & 0x7; + + dev_dbg(tc->dev, + "Link training phase %d done after %d uS: %s\n", + pattern, 1000 - timeout, errors[error]); + if (pattern == DP_TRAINING_PATTERN_1 && error == 0) + break; + if (pattern == DP_TRAINING_PATTERN_2) { + value &= LT_CHANNEL1_EQ_BITS | + LT_INTERLANE_ALIGN_DONE | + LT_CHANNEL0_EQ_BITS; + /* in case of two lanes */ + if ((tc->link.base.num_lanes == 2) && + (value == (LT_CHANNEL1_EQ_BITS | + LT_INTERLANE_ALIGN_DONE | + LT_CHANNEL0_EQ_BITS))) + break; + /* in case of one line */ + if ((tc->link.base.num_lanes == 1) && + (value == (LT_INTERLANE_ALIGN_DONE | + LT_CHANNEL0_EQ_BITS))) + break; + } + } + /* restart */ + tc_write(DP0CTL, 0); + usleep_range(10, 20); + } while (--retry); + if (retry == 0) { + dev_err(tc->dev, "Failed to finish training phase %d\n", + pattern); + } + + return 0; +err: + return ret; +} + +static int tc_main_link_setup(struct tc_data *tc) +{ + struct drm_dp_aux *aux = &tc->aux; + struct device *dev = tc->dev; + unsigned int rate; + u32 dp_phy_ctrl; + int timeout; + bool aligned; + bool ready; + u32 value; + int ret; + u8 tmp[8]; + + /* display mode should be set at this point */ + if (!tc->mode) + return -EINVAL; + + /* from excel file - DP0_SrcCtrl */ + tc_write(DP0_SRCCTRL, DP0_SRCCTRL_SCRMBLDIS | DP0_SRCCTRL_EN810B | + DP0_SRCCTRL_LANESKEW | DP0_SRCCTRL_LANES_2 | + DP0_SRCCTRL_BW27 | DP0_SRCCTRL_AUTOCORRECT); + /* from excel file - DP1_SrcCtrl */ + tc_write(0x07a0, 0x00003083); + + rate = clk_get_rate(tc->refclk); + switch (rate) { + case 38400000: + value = REF_FREQ_38M4; + break; + case 26000000: + value = REF_FREQ_26M; + break; + case 19200000: + value = REF_FREQ_19M2; + break; + case 13000000: + value = REF_FREQ_13M; + break; + default: + return -EINVAL; + } + value |= SYSCLK_SEL_LSCLK | LSCLK_DIV_2; + tc_write(SYS_PLLPARAM, value); + /* Setup Main Link */ + dp_phy_ctrl = BGREN | PWR_SW_EN | BIT(2) | PHY_A0_EN | PHY_M0_EN; + tc_write(DP_PHY_CTRL, dp_phy_ctrl); + msleep(100); + + /* PLL setup */ + tc_write(DP0_PLLCTRL, PLLUPDATE | PLLEN); + tc_wait_pll_lock(tc); + + tc_write(DP1_PLLCTRL, PLLUPDATE | PLLEN); + tc_wait_pll_lock(tc); + + /* PXL PLL setup */ + if (tc_test_pattern) { + ret = tc_pxl_pll_en(tc, clk_get_rate(tc->refclk), + 1000 * tc->mode->clock); + if (ret) + goto err; + } + + /* Reset/Enable Main Links */ + dp_phy_ctrl |= DP_PHY_RST | PHY_M1_RST | PHY_M0_RST; + tc_write(DP_PHY_CTRL, dp_phy_ctrl); + usleep_range(100, 200); + dp_phy_ctrl &= ~(DP_PHY_RST | PHY_M1_RST | PHY_M0_RST); + tc_write(DP_PHY_CTRL, dp_phy_ctrl); + + timeout = 1000; + do { + tc_read(DP_PHY_CTRL, &value); + udelay(1); + } while ((!(value & PHY_RDY)) && (--timeout)); + + if (timeout == 0) { + dev_err(dev, "timeout waiting for phy become ready"); + return -ETIMEDOUT; + } + + /* Set misc: 8 bits per color */ + ret = regmap_update_bits(tc->regmap, DP0_MISC, BPC_8, BPC_8); + if (ret) + goto err; + + /* + * ASSR mode + * on TC358767 side ASSR configured through strap pin + * seems there is no way to change this setting from SW + * + * check is tc configured for same mode + */ + if (tc->assr != tc->link.assr) { + dev_dbg(dev, "Trying to set display to ASSR: %d\n", + tc->assr); + /* try to set ASSR on display side */ + tmp[0] = tc->assr; + ret = drm_dp_dpcd_writeb(aux, DP_EDP_CONFIGURATION_SET, tmp[0]); + if (ret < 0) + goto err_dpcd_read; + /* read back */ + ret = drm_dp_dpcd_readb(aux, DP_EDP_CONFIGURATION_SET, tmp); + if (ret < 0) + goto err_dpcd_read; + + if (tmp[0] != tc->assr) { + dev_warn(dev, "Failed to switch display ASSR to %d, falling back to unscrambled mode\n", + tc->assr); + /* trying with disabled scrambler */ + tc->link.scrambler_dis = 1; + } + } + + /* Setup Link & DPRx Config for Training */ + ret = drm_dp_link_configure(aux, &tc->link.base); + if (ret < 0) + goto err_dpcd_write; + + /* DOWNSPREAD_CTRL */ + tmp[0] = tc->link.spread ? DP_SPREAD_AMP_0_5 : 0x00; + /* MAIN_LINK_CHANNEL_CODING_SET */ + tmp[1] = tc->link.coding8b10b ? DP_SET_ANSI_8B10B : 0x00; + ret = drm_dp_dpcd_write(aux, DP_DOWNSPREAD_CTRL, tmp, 2); + if (ret < 0) + goto err_dpcd_write; + + ret = tc_link_training(tc, DP_TRAINING_PATTERN_1); + if (ret) + goto err; + + ret = tc_link_training(tc, DP_TRAINING_PATTERN_2); + if (ret) + goto err; + + /* Clear DPCD 0x102 */ + /* Note: Can Not use DP0_SNKLTCTRL (0x06E4) short cut */ + tmp[0] = tc->link.scrambler_dis ? DP_LINK_SCRAMBLING_DISABLE : 0x00; + ret = drm_dp_dpcd_writeb(aux, DP_TRAINING_PATTERN_SET, tmp[0]); + if (ret < 0) + goto err_dpcd_write; + + /* Clear Training Pattern, set AutoCorrect Mode = 1 */ + tc_write(DP0_SRCCTRL, tc_srcctrl(tc) | DP0_SRCCTRL_AUTOCORRECT); + + /* Wait */ + timeout = 100; + do { + udelay(1); + /* Read DPCD 0x202-0x207 */ + ret = drm_dp_dpcd_read_link_status(aux, tmp + 2); + if (ret < 0) + goto err_dpcd_read; + ready = (tmp[2] == ((DP_CHANNEL_EQ_BITS << 4) | /* Lane1 */ + DP_CHANNEL_EQ_BITS)); /* Lane0 */ + aligned = tmp[4] & DP_INTERLANE_ALIGN_DONE; + } while ((--timeout) && !(ready && aligned)); + + if (timeout == 0) { + /* Read DPCD 0x200-0x201 */ + ret = drm_dp_dpcd_read(aux, DP_SINK_COUNT, tmp, 2); + if (ret < 0) + goto err_dpcd_read; + dev_info(dev, "0x0200 SINK_COUNT: 0x%02x\n", tmp[0]); + dev_info(dev, "0x0201 DEVICE_SERVICE_IRQ_VECTOR: 0x%02x\n", + tmp[1]); + dev_info(dev, "0x0202 LANE0_1_STATUS: 0x%02x\n", tmp[2]); + dev_info(dev, "0x0204 LANE_ALIGN_STATUS_UPDATED: 0x%02x\n", + tmp[4]); + dev_info(dev, "0x0205 SINK_STATUS: 0x%02x\n", tmp[5]); + dev_info(dev, "0x0206 ADJUST_REQUEST_LANE0_1: 0x%02x\n", + tmp[6]); + + if (!ready) + dev_err(dev, "Lane0/1 not ready\n"); + if (!aligned) + dev_err(dev, "Lane0/1 not aligned\n"); + return -EAGAIN; + } + + ret = tc_set_video_mode(tc, tc->mode); + if (ret) + goto err; + + /* Set M/N */ + ret = tc_stream_clock_calc(tc); + if (ret) + goto err; + + return 0; +err_dpcd_read: + dev_err(tc->dev, "Failed to read DPCD: %d\n", ret); + return ret; +err_dpcd_write: + dev_err(tc->dev, "Failed to write DPCD: %d\n", ret); +err: + return ret; +} + +static int tc_main_link_stream(struct tc_data *tc, int state) +{ + int ret; + u32 value; + + dev_dbg(tc->dev, "stream: %d\n", state); + + if (state) { + value = VID_MN_GEN | DP_EN; + if (tc->link.base.capabilities & DP_LINK_CAP_ENHANCED_FRAMING) + value |= EF_EN; + tc_write(DP0CTL, value); + /* + * VID_EN assertion should be delayed by at least N * LSCLK + * cycles from the time VID_MN_GEN is enabled in order to + * generate stable values for VID_M. LSCLK is 270 MHz or + * 162 MHz, VID_N is set to 32768 in tc_stream_clock_calc(), + * so a delay of at least 203 us should suffice. + */ + usleep_range(500, 1000); + value |= VID_EN; + tc_write(DP0CTL, value); + /* Set input interface */ + value = DP0_AUDSRC_NO_INPUT; + if (tc_test_pattern) + value |= DP0_VIDSRC_COLOR_BAR; + else + value |= DP0_VIDSRC_DPI_RX; + tc_write(SYSCTRL, value); + } else { + tc_write(DP0CTL, 0); + } + + return 0; +err: + return ret; +} + +static enum drm_connector_status +tc_connector_detect(struct drm_connector *connector, bool force) +{ + return connector_status_connected; +} + +static void tc_bridge_pre_enable(struct drm_bridge *bridge) +{ + struct tc_data *tc = bridge_to_tc(bridge); + + drm_panel_prepare(tc->panel); +} + +static void tc_bridge_enable(struct drm_bridge *bridge) +{ + struct tc_data *tc = bridge_to_tc(bridge); + int ret; + + ret = tc_main_link_setup(tc); + if (ret < 0) { + dev_err(tc->dev, "main link setup error: %d\n", ret); + return; + } + + ret = tc_main_link_stream(tc, 1); + if (ret < 0) { + dev_err(tc->dev, "main link stream start error: %d\n", ret); + return; + } + + drm_panel_enable(tc->panel); +} + +static void tc_bridge_disable(struct drm_bridge *bridge) +{ + struct tc_data *tc = bridge_to_tc(bridge); + int ret; + + drm_panel_disable(tc->panel); + + ret = tc_main_link_stream(tc, 0); + if (ret < 0) + dev_err(tc->dev, "main link stream stop error: %d\n", ret); +} + +static void tc_bridge_post_disable(struct drm_bridge *bridge) +{ + struct tc_data *tc = bridge_to_tc(bridge); + + drm_panel_unprepare(tc->panel); +} + +static bool tc_bridge_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adj) +{ + /* Fixup sync polarities, both hsync and vsync are active low */ + adj->flags = mode->flags; + adj->flags |= (DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); + adj->flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); + + return true; +} + +static int tc_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + /* Accept any mode */ + return MODE_OK; +} + +static void tc_bridge_mode_set(struct drm_bridge *bridge, + struct drm_display_mode *mode, + struct drm_display_mode *adj) +{ + struct tc_data *tc = bridge_to_tc(bridge); + + tc->mode = mode; +} + +static int tc_connector_get_modes(struct drm_connector *connector) +{ + struct tc_data *tc = connector_to_tc(connector); + struct edid *edid; + unsigned int count; + + if (tc->panel && tc->panel->funcs && tc->panel->funcs->get_modes) { + count = tc->panel->funcs->get_modes(tc->panel); + if (count > 0) + return count; + } + + edid = drm_get_edid(connector, &tc->aux.ddc); + + kfree(tc->edid); + tc->edid = edid; + if (!edid) + return 0; + + drm_mode_connector_update_edid_property(connector, edid); + count = drm_add_edid_modes(connector, edid); + + return count; +} + +static void tc_connector_set_polling(struct tc_data *tc, + struct drm_connector *connector) +{ + /* TODO: add support for HPD */ + connector->polled = DRM_CONNECTOR_POLL_CONNECT | + DRM_CONNECTOR_POLL_DISCONNECT; +} + +static struct drm_encoder * +tc_connector_best_encoder(struct drm_connector *connector) +{ + struct tc_data *tc = connector_to_tc(connector); + + return tc->bridge.encoder; +} + +static const struct drm_connector_helper_funcs tc_connector_helper_funcs = { + .get_modes = tc_connector_get_modes, + .mode_valid = tc_connector_mode_valid, + .best_encoder = tc_connector_best_encoder, +}; + +static void tc_connector_destroy(struct drm_connector *connector) +{ + drm_connector_unregister(connector); + drm_connector_cleanup(connector); +} + +static const struct drm_connector_funcs tc_connector_funcs = { + .dpms = drm_atomic_helper_connector_dpms, + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = tc_connector_detect, + .destroy = tc_connector_destroy, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static int tc_bridge_attach(struct drm_bridge *bridge) +{ + u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; + struct tc_data *tc = bridge_to_tc(bridge); + struct drm_device *drm = bridge->dev; + int ret; + + /* Create eDP connector */ + drm_connector_helper_add(&tc->connector, &tc_connector_helper_funcs); + ret = drm_connector_init(drm, &tc->connector, &tc_connector_funcs, + DRM_MODE_CONNECTOR_eDP); + if (ret) + return ret; + + if (tc->panel) + drm_panel_attach(tc->panel, &tc->connector); + + drm_display_info_set_bus_formats(&tc->connector.display_info, + &bus_format, 1); + drm_mode_connector_attach_encoder(&tc->connector, tc->bridge.encoder); + + return 0; +} + +static const struct drm_bridge_funcs tc_bridge_funcs = { + .attach = tc_bridge_attach, + .mode_set = tc_bridge_mode_set, + .pre_enable = tc_bridge_pre_enable, + .enable = tc_bridge_enable, + .disable = tc_bridge_disable, + .post_disable = tc_bridge_post_disable, + .mode_fixup = tc_bridge_mode_fixup, +}; + +static bool tc_readable_reg(struct device *dev, unsigned int reg) +{ + return reg != SYSCTRL; +} + +static const struct regmap_range tc_volatile_ranges[] = { + regmap_reg_range(DP0_AUXWDATA(0), DP0_AUXSTATUS), + regmap_reg_range(DP0_LTSTAT, DP0_SNKLTCHGREQ), + regmap_reg_range(DP_PHY_CTRL, DP_PHY_CTRL), + regmap_reg_range(DP0_PLLCTRL, PXL_PLLCTRL), + regmap_reg_range(VFUEN0, VFUEN0), +}; + +static const struct regmap_access_table tc_volatile_table = { + .yes_ranges = tc_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(tc_volatile_ranges), +}; + +static bool tc_writeable_reg(struct device *dev, unsigned int reg) +{ + return (reg != TC_IDREG) && + (reg != DP0_LTSTAT) && + (reg != DP0_SNKLTCHGREQ); +} + +static const struct regmap_config tc_regmap_config = { + .name = "tc358767", + .reg_bits = 16, + .val_bits = 32, + .reg_stride = 4, + .max_register = PLL_DBG, + .cache_type = REGCACHE_RBTREE, + .readable_reg = tc_readable_reg, + .volatile_table = &tc_volatile_table, + .writeable_reg = tc_writeable_reg, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .val_format_endian = REGMAP_ENDIAN_LITTLE, +}; + +static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct device_node *ep; + struct tc_data *tc; + int ret; + + tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL); + if (!tc) + return -ENOMEM; + + tc->dev = dev; + + /* port@2 is the output port */ + ep = of_graph_get_endpoint_by_regs(dev->of_node, 2, -1); + if (ep) { + struct device_node *remote; + + remote = of_graph_get_remote_port_parent(ep); + if (!remote) { + dev_warn(dev, "endpoint %s not connected\n", + ep->full_name); + of_node_put(ep); + return -ENODEV; + } + of_node_put(ep); + tc->panel = of_drm_find_panel(remote); + if (tc->panel) { + dev_dbg(dev, "found panel %s\n", remote->full_name); + } else { + dev_dbg(dev, "waiting for panel %s\n", + remote->full_name); + of_node_put(remote); + return -EPROBE_DEFER; + } + of_node_put(remote); + } + + /* Shut down GPIO is optional */ + tc->sd_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH); + if (IS_ERR(tc->sd_gpio)) + return PTR_ERR(tc->sd_gpio); + + if (tc->sd_gpio) { + gpiod_set_value_cansleep(tc->sd_gpio, 0); + usleep_range(5000, 10000); + } + + /* Reset GPIO is optional */ + tc->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(tc->reset_gpio)) + return PTR_ERR(tc->reset_gpio); + + if (tc->reset_gpio) { + gpiod_set_value_cansleep(tc->reset_gpio, 1); + usleep_range(5000, 10000); + } + + tc->refclk = devm_clk_get(dev, "ref"); + if (IS_ERR(tc->refclk)) { + ret = PTR_ERR(tc->refclk); + dev_err(dev, "Failed to get refclk: %d\n", ret); + return ret; + } + + tc->regmap = devm_regmap_init_i2c(client, &tc_regmap_config); + if (IS_ERR(tc->regmap)) { + ret = PTR_ERR(tc->regmap); + dev_err(dev, "Failed to initialize regmap: %d\n", ret); + return ret; + } + + ret = regmap_read(tc->regmap, TC_IDREG, &tc->rev); + if (ret) { + dev_err(tc->dev, "can not read device ID: %d\n", ret); + return ret; + } + + if ((tc->rev != 0x6601) && (tc->rev != 0x6603)) { + dev_err(tc->dev, "invalid device ID: 0x%08x\n", tc->rev); + return -EINVAL; + } + + tc->assr = (tc->rev == 0x6601); /* Enable ASSR for eDP panels */ + + ret = tc_aux_link_setup(tc); + if (ret) + return ret; + + /* Register DP AUX channel */ + tc->aux.name = "TC358767 AUX i2c adapter"; + tc->aux.dev = tc->dev; + tc->aux.transfer = tc_aux_transfer; + ret = drm_dp_aux_register(&tc->aux); + if (ret) + return ret; + + ret = tc_get_display_props(tc); + if (ret) + goto err_unregister_aux; + + tc_connector_set_polling(tc, &tc->connector); + + tc->bridge.funcs = &tc_bridge_funcs; + tc->bridge.of_node = dev->of_node; + ret = drm_bridge_add(&tc->bridge); + if (ret) { + dev_err(dev, "Failed to add drm_bridge: %d\n", ret); + goto err_unregister_aux; + } + + i2c_set_clientdata(client, tc); + + return 0; +err_unregister_aux: + drm_dp_aux_unregister(&tc->aux); + return ret; +} + +static int tc_remove(struct i2c_client *client) +{ + struct tc_data *tc = i2c_get_clientdata(client); + + drm_bridge_remove(&tc->bridge); + drm_dp_aux_unregister(&tc->aux); + + tc_pxl_pll_dis(tc); + + return 0; +} + +static const struct i2c_device_id tc358767_i2c_ids[] = { + { "tc358767", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tc358767_i2c_ids); + +static const struct of_device_id tc358767_of_ids[] = { + { .compatible = "toshiba,tc358767", }, + { } +}; +MODULE_DEVICE_TABLE(of, tc358767_of_ids); + +static struct i2c_driver tc358767_driver = { + .driver = { + .name = "tc358767", + .of_match_table = tc358767_of_ids, + }, + .id_table = tc358767_i2c_ids, + .probe = tc_probe, + .remove = tc_remove, +}; +module_i2c_driver(tc358767_driver); + +MODULE_AUTHOR("Andrey Gusakov <andrey.gusakov@cogentembedded.com>"); +MODULE_DESCRIPTION("tc358767 eDP encoder driver"); +MODULE_LICENSE("GPL"); |