diff options
Diffstat (limited to 'drivers/video/omap2/dss/dispc.c')
| -rw-r--r-- | drivers/video/omap2/dss/dispc.c | 3091 |
1 files changed, 3091 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c new file mode 100644 index 000000000000..6dabf4b2f005 --- /dev/null +++ b/drivers/video/omap2/dss/dispc.c @@ -0,0 +1,3091 @@ +/* + * linux/drivers/video/omap2/dss/dispc.c + * + * Copyright (C) 2009 Nokia Corporation + * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> + * + * Some code and ideas taken from drivers/video/omap/ driver + * by Imre Deak. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#define DSS_SUBSYS_NAME "DISPC" + +#include <linux/kernel.h> +#include <linux/dma-mapping.h> +#include <linux/vmalloc.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/jiffies.h> +#include <linux/seq_file.h> +#include <linux/delay.h> +#include <linux/workqueue.h> + +#include <plat/sram.h> +#include <plat/clock.h> + +#include <plat/display.h> + +#include "dss.h" + +/* DISPC */ +#define DISPC_BASE 0x48050400 + +#define DISPC_SZ_REGS SZ_1K + +struct dispc_reg { u16 idx; }; + +#define DISPC_REG(idx) ((const struct dispc_reg) { idx }) + +/* DISPC common */ +#define DISPC_REVISION DISPC_REG(0x0000) +#define DISPC_SYSCONFIG DISPC_REG(0x0010) +#define DISPC_SYSSTATUS DISPC_REG(0x0014) +#define DISPC_IRQSTATUS DISPC_REG(0x0018) +#define DISPC_IRQENABLE DISPC_REG(0x001C) +#define DISPC_CONTROL DISPC_REG(0x0040) +#define DISPC_CONFIG DISPC_REG(0x0044) +#define DISPC_CAPABLE DISPC_REG(0x0048) +#define DISPC_DEFAULT_COLOR0 DISPC_REG(0x004C) +#define DISPC_DEFAULT_COLOR1 DISPC_REG(0x0050) +#define DISPC_TRANS_COLOR0 DISPC_REG(0x0054) +#define DISPC_TRANS_COLOR1 DISPC_REG(0x0058) +#define DISPC_LINE_STATUS DISPC_REG(0x005C) +#define DISPC_LINE_NUMBER DISPC_REG(0x0060) +#define DISPC_TIMING_H DISPC_REG(0x0064) +#define DISPC_TIMING_V DISPC_REG(0x0068) +#define DISPC_POL_FREQ DISPC_REG(0x006C) +#define DISPC_DIVISOR DISPC_REG(0x0070) +#define DISPC_GLOBAL_ALPHA DISPC_REG(0x0074) +#define DISPC_SIZE_DIG DISPC_REG(0x0078) +#define DISPC_SIZE_LCD DISPC_REG(0x007C) + +/* DISPC GFX plane */ +#define DISPC_GFX_BA0 DISPC_REG(0x0080) +#define DISPC_GFX_BA1 DISPC_REG(0x0084) +#define DISPC_GFX_POSITION DISPC_REG(0x0088) +#define DISPC_GFX_SIZE DISPC_REG(0x008C) +#define DISPC_GFX_ATTRIBUTES DISPC_REG(0x00A0) +#define DISPC_GFX_FIFO_THRESHOLD DISPC_REG(0x00A4) +#define DISPC_GFX_FIFO_SIZE_STATUS DISPC_REG(0x00A8) +#define DISPC_GFX_ROW_INC DISPC_REG(0x00AC) +#define DISPC_GFX_PIXEL_INC DISPC_REG(0x00B0) +#define DISPC_GFX_WINDOW_SKIP DISPC_REG(0x00B4) +#define DISPC_GFX_TABLE_BA DISPC_REG(0x00B8) + +#define DISPC_DATA_CYCLE1 DISPC_REG(0x01D4) +#define DISPC_DATA_CYCLE2 DISPC_REG(0x01D8) +#define DISPC_DATA_CYCLE3 DISPC_REG(0x01DC) + +#define DISPC_CPR_COEF_R DISPC_REG(0x0220) +#define DISPC_CPR_COEF_G DISPC_REG(0x0224) +#define DISPC_CPR_COEF_B DISPC_REG(0x0228) + +#define DISPC_GFX_PRELOAD DISPC_REG(0x022C) + +/* DISPC Video plane, n = 0 for VID1 and n = 1 for VID2 */ +#define DISPC_VID_REG(n, idx) DISPC_REG(0x00BC + (n)*0x90 + idx) + +#define DISPC_VID_BA0(n) DISPC_VID_REG(n, 0x0000) +#define DISPC_VID_BA1(n) DISPC_VID_REG(n, 0x0004) +#define DISPC_VID_POSITION(n) DISPC_VID_REG(n, 0x0008) +#define DISPC_VID_SIZE(n) DISPC_VID_REG(n, 0x000C) +#define DISPC_VID_ATTRIBUTES(n) DISPC_VID_REG(n, 0x0010) +#define DISPC_VID_FIFO_THRESHOLD(n) DISPC_VID_REG(n, 0x0014) +#define DISPC_VID_FIFO_SIZE_STATUS(n) DISPC_VID_REG(n, 0x0018) +#define DISPC_VID_ROW_INC(n) DISPC_VID_REG(n, 0x001C) +#define DISPC_VID_PIXEL_INC(n) DISPC_VID_REG(n, 0x0020) +#define DISPC_VID_FIR(n) DISPC_VID_REG(n, 0x0024) +#define DISPC_VID_PICTURE_SIZE(n) DISPC_VID_REG(n, 0x0028) +#define DISPC_VID_ACCU0(n) DISPC_VID_REG(n, 0x002C) +#define DISPC_VID_ACCU1(n) DISPC_VID_REG(n, 0x0030) + +/* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */ +#define DISPC_VID_FIR_COEF_H(n, i) DISPC_REG(0x00F0 + (n)*0x90 + (i)*0x8) +/* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */ +#define DISPC_VID_FIR_COEF_HV(n, i) DISPC_REG(0x00F4 + (n)*0x90 + (i)*0x8) +/* coef index i = {0, 1, 2, 3, 4} */ +#define DISPC_VID_CONV_COEF(n, i) DISPC_REG(0x0130 + (n)*0x90 + (i)*0x4) +/* coef index i = {0, 1, 2, 3, 4, 5, 6, 7} */ +#define DISPC_VID_FIR_COEF_V(n, i) DISPC_REG(0x01E0 + (n)*0x20 + (i)*0x4) + +#define DISPC_VID_PRELOAD(n) DISPC_REG(0x230 + (n)*0x04) + + +#define DISPC_IRQ_MASK_ERROR (DISPC_IRQ_GFX_FIFO_UNDERFLOW | \ + DISPC_IRQ_OCP_ERR | \ + DISPC_IRQ_VID1_FIFO_UNDERFLOW | \ + DISPC_IRQ_VID2_FIFO_UNDERFLOW | \ + DISPC_IRQ_SYNC_LOST | \ + DISPC_IRQ_SYNC_LOST_DIGIT) + +#define DISPC_MAX_NR_ISRS 8 + +struct omap_dispc_isr_data { + omap_dispc_isr_t isr; + void *arg; + u32 mask; +}; + +#define REG_GET(idx, start, end) \ + FLD_GET(dispc_read_reg(idx), start, end) + +#define REG_FLD_MOD(idx, val, start, end) \ + dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end)) + +static const struct dispc_reg dispc_reg_att[] = { DISPC_GFX_ATTRIBUTES, + DISPC_VID_ATTRIBUTES(0), + DISPC_VID_ATTRIBUTES(1) }; + +static struct { + void __iomem *base; + + u32 fifo_size[3]; + + spinlock_t irq_lock; + u32 irq_error_mask; + struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS]; + u32 error_irqs; + struct work_struct error_work; + + u32 ctx[DISPC_SZ_REGS / sizeof(u32)]; +} dispc; + +static void _omap_dispc_set_irqs(void); + +static inline void dispc_write_reg(const struct dispc_reg idx, u32 val) +{ + __raw_writel(val, dispc.base + idx.idx); +} + +static inline u32 dispc_read_reg(const struct dispc_reg idx) +{ + return __raw_readl(dispc.base + idx.idx); +} + +#define SR(reg) \ + dispc.ctx[(DISPC_##reg).idx / sizeof(u32)] = dispc_read_reg(DISPC_##reg) +#define RR(reg) \ + dispc_write_reg(DISPC_##reg, dispc.ctx[(DISPC_##reg).idx / sizeof(u32)]) + +void dispc_save_context(void) +{ + if (cpu_is_omap24xx()) + return; + + SR(SYSCONFIG); + SR(IRQENABLE); + SR(CONTROL); + SR(CONFIG); + SR(DEFAULT_COLOR0); + SR(DEFAULT_COLOR1); + SR(TRANS_COLOR0); + SR(TRANS_COLOR1); + SR(LINE_NUMBER); + SR(TIMING_H); + SR(TIMING_V); + SR(POL_FREQ); + SR(DIVISOR); + SR(GLOBAL_ALPHA); + SR(SIZE_DIG); + SR(SIZE_LCD); + + SR(GFX_BA0); + SR(GFX_BA1); + SR(GFX_POSITION); + SR(GFX_SIZE); + SR(GFX_ATTRIBUTES); + SR(GFX_FIFO_THRESHOLD); + SR(GFX_ROW_INC); + SR(GFX_PIXEL_INC); + SR(GFX_WINDOW_SKIP); + SR(GFX_TABLE_BA); + + SR(DATA_CYCLE1); + SR(DATA_CYCLE2); + SR(DATA_CYCLE3); + + SR(CPR_COEF_R); + SR(CPR_COEF_G); + SR(CPR_COEF_B); + + SR(GFX_PRELOAD); + + /* VID1 */ + SR(VID_BA0(0)); + SR(VID_BA1(0)); + SR(VID_POSITION(0)); + SR(VID_SIZE(0)); + SR(VID_ATTRIBUTES(0)); + SR(VID_FIFO_THRESHOLD(0)); + SR(VID_ROW_INC(0)); + SR(VID_PIXEL_INC(0)); + SR(VID_FIR(0)); + SR(VID_PICTURE_SIZE(0)); + SR(VID_ACCU0(0)); + SR(VID_ACCU1(0)); + + SR(VID_FIR_COEF_H(0, 0)); + SR(VID_FIR_COEF_H(0, 1)); + SR(VID_FIR_COEF_H(0, 2)); + SR(VID_FIR_COEF_H(0, 3)); + SR(VID_FIR_COEF_H(0, 4)); + SR(VID_FIR_COEF_H(0, 5)); + SR(VID_FIR_COEF_H(0, 6)); + SR(VID_FIR_COEF_H(0, 7)); + + SR(VID_FIR_COEF_HV(0, 0)); + SR(VID_FIR_COEF_HV(0, 1)); + SR(VID_FIR_COEF_HV(0, 2)); + SR(VID_FIR_COEF_HV(0, 3)); + SR(VID_FIR_COEF_HV(0, 4)); + SR(VID_FIR_COEF_HV(0, 5)); + SR(VID_FIR_COEF_HV(0, 6)); + SR(VID_FIR_COEF_HV(0, 7)); + + SR(VID_CONV_COEF(0, 0)); + SR(VID_CONV_COEF(0, 1)); + SR(VID_CONV_COEF(0, 2)); + SR(VID_CONV_COEF(0, 3)); + SR(VID_CONV_COEF(0, 4)); + + SR(VID_FIR_COEF_V(0, 0)); + SR(VID_FIR_COEF_V(0, 1)); + SR(VID_FIR_COEF_V(0, 2)); + SR(VID_FIR_COEF_V(0, 3)); + SR(VID_FIR_COEF_V(0, 4)); + SR(VID_FIR_COEF_V(0, 5)); + SR(VID_FIR_COEF_V(0, 6)); + SR(VID_FIR_COEF_V(0, 7)); + + SR(VID_PRELOAD(0)); + + /* VID2 */ + SR(VID_BA0(1)); + SR(VID_BA1(1)); + SR(VID_POSITION(1)); + SR(VID_SIZE(1)); + SR(VID_ATTRIBUTES(1)); + SR(VID_FIFO_THRESHOLD(1)); + SR(VID_ROW_INC(1)); + SR(VID_PIXEL_INC(1)); + SR(VID_FIR(1)); + SR(VID_PICTURE_SIZE(1)); + SR(VID_ACCU0(1)); + SR(VID_ACCU1(1)); + + SR(VID_FIR_COEF_H(1, 0)); + SR(VID_FIR_COEF_H(1, 1)); + SR(VID_FIR_COEF_H(1, 2)); + SR(VID_FIR_COEF_H(1, 3)); + SR(VID_FIR_COEF_H(1, 4)); + SR(VID_FIR_COEF_H(1, 5)); + SR(VID_FIR_COEF_H(1, 6)); + SR(VID_FIR_COEF_H(1, 7)); + + SR(VID_FIR_COEF_HV(1, 0)); + SR(VID_FIR_COEF_HV(1, 1)); + SR(VID_FIR_COEF_HV(1, 2)); + SR(VID_FIR_COEF_HV(1, 3)); + SR(VID_FIR_COEF_HV(1, 4)); + SR(VID_FIR_COEF_HV(1, 5)); + SR(VID_FIR_COEF_HV(1, 6)); + SR(VID_FIR_COEF_HV(1, 7)); + + SR(VID_CONV_COEF(1, 0)); + SR(VID_CONV_COEF(1, 1)); + SR(VID_CONV_COEF(1, 2)); + SR(VID_CONV_COEF(1, 3)); + SR(VID_CONV_COEF(1, 4)); + + SR(VID_FIR_COEF_V(1, 0)); + SR(VID_FIR_COEF_V(1, 1)); + SR(VID_FIR_COEF_V(1, 2)); + SR(VID_FIR_COEF_V(1, 3)); + SR(VID_FIR_COEF_V(1, 4)); + SR(VID_FIR_COEF_V(1, 5)); + SR(VID_FIR_COEF_V(1, 6)); + SR(VID_FIR_COEF_V(1, 7)); + + SR(VID_PRELOAD(1)); +} + +void dispc_restore_context(void) +{ + RR(SYSCONFIG); + RR(IRQENABLE); + /*RR(CONTROL);*/ + RR(CONFIG); + RR(DEFAULT_COLOR0); + RR(DEFAULT_COLOR1); + RR(TRANS_COLOR0); + RR(TRANS_COLOR1); + RR(LINE_NUMBER); + RR(TIMING_H); + RR(TIMING_V); + RR(POL_FREQ); + RR(DIVISOR); + RR(GLOBAL_ALPHA); + RR(SIZE_DIG); + RR(SIZE_LCD); + + RR(GFX_BA0); + RR(GFX_BA1); + RR(GFX_POSITION); + RR(GFX_SIZE); + RR(GFX_ATTRIBUTES); + RR(GFX_FIFO_THRESHOLD); + RR(GFX_ROW_INC); + RR(GFX_PIXEL_INC); + RR(GFX_WINDOW_SKIP); + RR(GFX_TABLE_BA); + + RR(DATA_CYCLE1); + RR(DATA_CYCLE2); + RR(DATA_CYCLE3); + + RR(CPR_COEF_R); + RR(CPR_COEF_G); + RR(CPR_COEF_B); + + RR(GFX_PRELOAD); + + /* VID1 */ + RR(VID_BA0(0)); + RR(VID_BA1(0)); + RR(VID_POSITION(0)); + RR(VID_SIZE(0)); + RR(VID_ATTRIBUTES(0)); + RR(VID_FIFO_THRESHOLD(0)); + RR(VID_ROW_INC(0)); + RR(VID_PIXEL_INC(0)); + RR(VID_FIR(0)); + RR(VID_PICTURE_SIZE(0)); + RR(VID_ACCU0(0)); + RR(VID_ACCU1(0)); + + RR(VID_FIR_COEF_H(0, 0)); + RR(VID_FIR_COEF_H(0, 1)); + RR(VID_FIR_COEF_H(0, 2)); + RR(VID_FIR_COEF_H(0, 3)); + RR(VID_FIR_COEF_H(0, 4)); + RR(VID_FIR_COEF_H(0, 5)); + RR(VID_FIR_COEF_H(0, 6)); + RR(VID_FIR_COEF_H(0, 7)); + + RR(VID_FIR_COEF_HV(0, 0)); + RR(VID_FIR_COEF_HV(0, 1)); + RR(VID_FIR_COEF_HV(0, 2)); + RR(VID_FIR_COEF_HV(0, 3)); + RR(VID_FIR_COEF_HV(0, 4)); + RR(VID_FIR_COEF_HV(0, 5)); + RR(VID_FIR_COEF_HV(0, 6)); + RR(VID_FIR_COEF_HV(0, 7)); + + RR(VID_CONV_COEF(0, 0)); + RR(VID_CONV_COEF(0, 1)); + RR(VID_CONV_COEF(0, 2)); + RR(VID_CONV_COEF(0, 3)); + RR(VID_CONV_COEF(0, 4)); + + RR(VID_FIR_COEF_V(0, 0)); + RR(VID_FIR_COEF_V(0, 1)); + RR(VID_FIR_COEF_V(0, 2)); + RR(VID_FIR_COEF_V(0, 3)); + RR(VID_FIR_COEF_V(0, 4)); + RR(VID_FIR_COEF_V(0, 5)); + RR(VID_FIR_COEF_V(0, 6)); + RR(VID_FIR_COEF_V(0, 7)); + + RR(VID_PRELOAD(0)); + + /* VID2 */ + RR(VID_BA0(1)); + RR(VID_BA1(1)); + RR(VID_POSITION(1)); + RR(VID_SIZE(1)); + RR(VID_ATTRIBUTES(1)); + RR(VID_FIFO_THRESHOLD(1)); + RR(VID_ROW_INC(1)); + RR(VID_PIXEL_INC(1)); + RR(VID_FIR(1)); + RR(VID_PICTURE_SIZE(1)); + RR(VID_ACCU0(1)); + RR(VID_ACCU1(1)); + + RR(VID_FIR_COEF_H(1, 0)); + RR(VID_FIR_COEF_H(1, 1)); + RR(VID_FIR_COEF_H(1, 2)); + RR(VID_FIR_COEF_H(1, 3)); + RR(VID_FIR_COEF_H(1, 4)); + RR(VID_FIR_COEF_H(1, 5)); + RR(VID_FIR_COEF_H(1, 6)); + RR(VID_FIR_COEF_H(1, 7)); + + RR(VID_FIR_COEF_HV(1, 0)); + RR(VID_FIR_COEF_HV(1, 1)); + RR(VID_FIR_COEF_HV(1, 2)); + RR(VID_FIR_COEF_HV(1, 3)); + RR(VID_FIR_COEF_HV(1, 4)); + RR(VID_FIR_COEF_HV(1, 5)); + RR(VID_FIR_COEF_HV(1, 6)); + RR(VID_FIR_COEF_HV(1, 7)); + + RR(VID_CONV_COEF(1, 0)); + RR(VID_CONV_COEF(1, 1)); + RR(VID_CONV_COEF(1, 2)); + RR(VID_CONV_COEF(1, 3)); + RR(VID_CONV_COEF(1, 4)); + + RR(VID_FIR_COEF_V(1, 0)); + RR(VID_FIR_COEF_V(1, 1)); + RR(VID_FIR_COEF_V(1, 2)); + RR(VID_FIR_COEF_V(1, 3)); + RR(VID_FIR_COEF_V(1, 4)); + RR(VID_FIR_COEF_V(1, 5)); + RR(VID_FIR_COEF_V(1, 6)); + RR(VID_FIR_COEF_V(1, 7)); + + RR(VID_PRELOAD(1)); + + /* enable last, because LCD & DIGIT enable are here */ + RR(CONTROL); +} + +#undef SR +#undef RR + +static inline void enable_clocks(bool enable) +{ + if (enable) + dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1); + else + dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1); +} + +bool dispc_go_busy(enum omap_channel channel) +{ + int bit; + + if (channel == OMAP_DSS_CHANNEL_LCD) + bit = 5; /* GOLCD */ + else + bit = 6; /* GODIGIT */ + + return REG_GET(DISPC_CONTROL, bit, bit) == 1; +} + +void dispc_go(enum omap_channel channel) +{ + int bit; + + enable_clocks(1); + + if (channel == OMAP_DSS_CHANNEL_LCD) + bit = 0; /* LCDENABLE */ + else + bit = 1; /* DIGITALENABLE */ + + /* if the channel is not enabled, we don't need GO */ + if (REG_GET(DISPC_CONTROL, bit, bit) == 0) + goto end; + + if (channel == OMAP_DSS_CHANNEL_LCD) + bit = 5; /* GOLCD */ + else + bit = 6; /* GODIGIT */ + + if (REG_GET(DISPC_CONTROL, bit, bit) == 1) { + DSSERR("GO bit not down for channel %d\n", channel); + goto end; + } + + DSSDBG("GO %s\n", channel == OMAP_DSS_CHANNEL_LCD ? "LCD" : "DIGIT"); + + REG_FLD_MOD(DISPC_CONTROL, 1, bit, bit); +end: + enable_clocks(0); +} + +static void _dispc_write_firh_reg(enum omap_plane plane, int reg, u32 value) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_write_reg(DISPC_VID_FIR_COEF_H(plane-1, reg), value); +} + +static void _dispc_write_firhv_reg(enum omap_plane plane, int reg, u32 value) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_write_reg(DISPC_VID_FIR_COEF_HV(plane-1, reg), value); +} + +static void _dispc_write_firv_reg(enum omap_plane plane, int reg, u32 value) +{ + BUG_ON(plane == OMAP_DSS_GFX); + + dispc_write_reg(DISPC_VID_FIR_COEF_V(plane-1, reg), value); +} + +static void _dispc_set_scale_coef(enum omap_plane plane, int hscaleup, + int vscaleup, int five_taps) +{ + /* Coefficients for horizontal up-sampling */ + static const u32 coef_hup[8] = { + 0x00800000, + 0x0D7CF800, + 0x1E70F5FF, + 0x335FF5FE, + 0xF74949F7, + 0xF55F33FB, + 0xF5701EFE, + 0xF87C0DFF, + }; + + /* Coefficients for horizontal down-sampling */ + static const u32 coef_hdown[8] = { + 0x24382400, + 0x28371FFE, + 0x2C361BFB, + 0x303516F9, + 0x11343311, + 0x1635300C, + 0x1B362C08, + 0x1F372804, + }; + + /* Coefficients for horizontal and vertical up-sampling */ + static const u32 coef_hvup[2][8] = { + { + 0x00800000, + 0x037B02FF, + 0x0C6F05FE, + 0x205907FB, + 0x00404000, + 0x075920FE, + 0x056F0CFF, + 0x027B0300, + }, + { + 0x00800000, + 0x0D7CF8FF, + 0x1E70F5FE, + 0x335FF5FB, + 0xF7404000, + 0xF55F33FE, + 0xF5701EFF, + 0xF87C0D00, + }, + }; + + /* Coefficients for horizontal and vertical down-sampling */ + static const u32 coef_hvdown[2][8] = { + { + 0x24382400, + 0x28391F04, + 0x2D381B08, + 0x3237170C, + 0x123737F7, + 0x173732F9, + 0x1B382DFB, + 0x1F3928FE, + }, + { + 0x24382400, + 0x28371F04, + 0x2C361B08, + 0x3035160C, + 0x113433F7, + 0x163530F9, + 0x1B362CFB, + 0x1F3728FE, + }, + }; + + /* Coefficients for vertical up-sampling */ + static const u32 coef_vup[8] = { + 0x00000000, + 0x0000FF00, + 0x0000FEFF, + 0x0000FBFE, + 0x000000F7, + 0x0000FEFB, + 0x0000FFFE, + 0x000000FF, + }; + + + /* Coefficients for vertical down-sampling */ + static const u32 coef_vdown[8] = { + 0x00000000, + 0x000004FE, + 0x000008FB, + 0x00000CF9, + 0x0000F711, + 0x0000F90C, + 0x0000FB08, + 0x0000FE04, + }; + + const u32 *h_coef; + const u32 *hv_coef; + const u32 *hv_coef_mod; + const u32 *v_coef; + int i; + + if (hscaleup) + h_coef = coef_hup; + else + h_coef = coef_hdown; + + if (vscaleup) { + hv_coef = coef_hvup[five_taps]; + v_coef = coef_vup; + + if (hscaleup) + hv_coef_mod = NULL; + else + hv_coef_mod = coef_hvdown[five_taps]; + } else { + hv_coef = coef_hvdown[five_taps]; + v_coef = coef_vdown; + + if (hscaleup) + hv_coef_mod = coef_hvup[five_taps]; + else + hv_coef_mod = NULL; + } + + for (i = 0; i < 8; i++) { + u32 h, hv; + + h = h_coef[i]; + + hv = hv_coef[i]; + + if (hv_coef_mod) { + hv &= 0xffffff00; + hv |= (hv_coef_mod[i] & 0xff); + } + + _dispc_write_firh_reg(plane, i, h); + _dispc_write_firhv_reg(plane, i, hv); + } + + if (!five_taps) + return; + + for (i = 0; i < 8; i++) { + u32 v; + v = v_coef[i]; + _dispc_write_firv_reg(plane, i, v); + } +} + +static void _dispc_setup_color_conv_coef(void) +{ + const struct color_conv_coef { + int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb; + int full_range; + } ctbl_bt601_5 = { + 298, 409, 0, 298, -208, -100, 298, 0, 517, 0, + }; + + const struct color_conv_coef *ct; + +#define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0)) + + ct = &ctbl_bt601_5; + + dispc_write_reg(DISPC_VID_CONV_COEF(0, 0), CVAL(ct->rcr, ct->ry)); + dispc_write_reg(DISPC_VID_CONV_COEF(0, 1), CVAL(ct->gy, ct->rcb)); + dispc_write_reg(DISPC_VID_CONV_COEF(0, 2), CVAL(ct->gcb, ct->gcr)); + dispc_write_reg(DISPC_VID_CONV_COEF(0, 3), CVAL(ct->bcr, ct->by)); + dispc_write_reg(DISPC_VID_CONV_COEF(0, 4), CVAL(0, ct->bcb)); + + dispc_write_reg(DISPC_VID_CONV_COEF(1, 0), CVAL(ct->rcr, ct->ry)); + dispc_write_reg(DISPC_VID_CONV_COEF(1, 1), CVAL(ct->gy, ct->rcb)); + dispc_write_reg(DISPC_VID_CONV_COEF(1, 2), CVAL(ct->gcb, ct->gcr)); + dispc_write_reg(DISPC_VID_CONV_COEF(1, 3), CVAL(ct->bcr, ct->by)); + dispc_write_reg(DISPC_VID_CONV_COEF(1, 4), CVAL(0, ct->bcb)); + +#undef CVAL + + REG_FLD_MOD(DISPC_VID_ATTRIBUTES(0), ct->full_range, 11, 11); + REG_FLD_MOD(DISPC_VID_ATTRIBUTES(1), ct->full_range, 11, 11); +} + + +static void _dispc_set_plane_ba0(enum omap_plane plane, u32 paddr) +{ + const struct dispc_reg ba0_reg[] = { DISPC_GFX_BA0, + DISPC_VID_BA0(0), + DISPC_VID_BA0(1) }; + + dispc_write_reg(ba0_reg[plane], paddr); +} + +static void _dispc_set_plane_ba1(enum omap_plane plane, u32 paddr) +{ + const struct dispc_reg ba1_reg[] = { DISPC_GFX_BA1, + DISPC_VID_BA1(0), + DISPC_VID_BA1(1) }; + + dispc_write_reg(ba1_reg[plane], paddr); +} + +static void _dispc_set_plane_pos(enum omap_plane plane, int x, int y) +{ + const struct dispc_reg pos_reg[] = { DISPC_GFX_POSITION, + DISPC_VID_POSITION(0), + DISPC_VID_POSITION(1) }; + + u32 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0); + dispc_write_reg(pos_reg[plane], val); +} + +static void _dispc_set_pic_size(enum omap_plane plane, int width, int height) +{ + const struct dispc_reg siz_reg[] = { DISPC_GFX_SIZE, + DISPC_VID_PICTURE_SIZE(0), + DISPC_VID_PICTURE_SIZE(1) }; + u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); + dispc_write_reg(siz_reg[plane], val); +} + +static void _dispc_set_vid_size(enum omap_plane plane, int width, int height) +{ + u32 val; + const struct dispc_reg vsi_reg[] = { DISPC_VID_SIZE(0), + DISPC_VID_SIZE(1) }; + + BUG_ON(plane == OMAP_DSS_GFX); + + val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); + dispc_write_reg(vsi_reg[plane-1], val); +} + +static void _dispc_setup_global_alpha(enum omap_plane plane, u8 global_alpha) +{ + + BUG_ON(plane == OMAP_DSS_VIDEO1); + + if (cpu_is_omap24xx()) + return; + + if (plane == OMAP_DSS_GFX) + REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, 7, 0); + else if (plane == OMAP_DSS_VIDEO2) + REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, 23, 16); +} + +static void _dispc_set_pix_inc(enum omap_plane plane, s32 inc) +{ + const struct dispc_reg ri_reg[] = { DISPC_GFX_PIXEL_INC, + DISPC_VID_PIXEL_INC(0), + DISPC_VID_PIXEL_INC(1) }; + + dispc_write_reg(ri_reg[plane], inc); +} + +static void _dispc_set_row_inc(enum omap_plane plane, s32 inc) +{ + const struct dispc_reg ri_reg[] = { DISPC_GFX_ROW_INC, + DISPC_VID_ROW_INC(0), + DISPC_VID_ROW_INC(1) }; + + dispc_write_reg(ri_reg[plane], inc); +} + +static void _dispc_set_color_mode(enum omap_plane plane, + enum omap_color_mode color_mode) +{ + u32 m = 0; + + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + m = 0x0; break; + case OMAP_DSS_COLOR_CLUT2: + m = 0x1; break; + case OMAP_DSS_COLOR_CLUT4: + m = 0x2; break; + case OMAP_DSS_COLOR_CLUT8: + m = 0x3; break; + case OMAP_DSS_COLOR_RGB12U: + m = 0x4; break; + case OMAP_DSS_COLOR_ARGB16: + m = 0x5; break; + case OMAP_DSS_COLOR_RGB16: + m = 0x6; break; + case OMAP_DSS_COLOR_RGB24U: + m = 0x8; break; + case OMAP_DSS_COLOR_RGB24P: + m = 0x9; break; + case OMAP_DSS_COLOR_YUV2: + m = 0xa; break; + case OMAP_DSS_COLOR_UYVY: + m = 0xb; break; + case OMAP_DSS_COLOR_ARGB32: + m = 0xc; break; + case OMAP_DSS_COLOR_RGBA32: + m = 0xd; break; + case OMAP_DSS_COLOR_RGBX32: + m = 0xe; break; + default: + BUG(); break; + } + + REG_FLD_MOD(dispc_reg_att[plane], m, 4, 1); +} + +static void _dispc_set_channel_out(enum omap_plane plane, + enum omap_channel channel) +{ + int shift; + u32 val; + + switch (plane) { + case OMAP_DSS_GFX: + shift = 8; + break; + case OMAP_DSS_VIDEO1: + case OMAP_DSS_VIDEO2: + shift = 16; + break; + default: + BUG(); + return; + } + + val = dispc_read_reg(dispc_reg_att[plane]); + val = FLD_MOD(val, channel, shift, shift); + dispc_write_reg(dispc_reg_att[plane], val); +} + +void dispc_set_burst_size(enum omap_plane plane, + enum omap_burst_size burst_size) +{ + int shift; + u32 val; + + enable_clocks(1); + + switch (plane) { + case OMAP_DSS_GFX: + shift = 6; + break; + case OMAP_DSS_VIDEO1: + case OMAP_DSS_VIDEO2: + shift = 14; + break; + default: + BUG(); + return; + } + + val = dispc_read_reg(dispc_reg_att[plane]); + val = FLD_MOD(val, burst_size, shift+1, shift); + dispc_write_reg(dispc_reg_att[plane], val); + + enable_clocks(0); +} + +static void _dispc_set_vid_color_conv(enum omap_plane plane, bool enable) +{ + u32 val; + + BUG_ON(plane == OMAP_DSS_GFX); + + val = dispc_read_reg(dispc_reg_att[plane]); + val = FLD_MOD(val, enable, 9, 9); + dispc_write_reg(dispc_reg_att[plane], val); +} + +void dispc_enable_replication(enum omap_plane plane, bool enable) +{ + int bit; + + if (plane == OMAP_DSS_GFX) + bit = 5; + else + bit = 10; + + enable_clocks(1); + REG_FLD_MOD(dispc_reg_att[plane], enable, bit, bit); + enable_clocks(0); +} + +void dispc_set_lcd_size(u16 width, u16 height) +{ + u32 val; + BUG_ON((width > (1 << 11)) || (height > (1 << 11))); + val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); + enable_clocks(1); + dispc_write_reg(DISPC_SIZE_LCD, val); + enable_clocks(0); +} + +void dispc_set_digit_size(u16 width, u16 height) +{ + u32 val; + BUG_ON((width > (1 << 11)) || (height > (1 << 11))); + val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0); + enable_clocks(1); + dispc_write_reg(DISPC_SIZE_DIG, val); + enable_clocks(0); +} + +static void dispc_read_plane_fifo_sizes(void) +{ + const struct dispc_reg fsz_reg[] = { DISPC_GFX_FIFO_SIZE_STATUS, + DISPC_VID_FIFO_SIZE_STATUS(0), + DISPC_VID_FIFO_SIZE_STATUS(1) }; + u32 size; + int plane; + + enable_clocks(1); + + for (plane = 0; plane < ARRAY_SIZE(dispc.fifo_size); ++plane) { + if (cpu_is_omap24xx()) + size = FLD_GET(dispc_read_reg(fsz_reg[plane]), 8, 0); + else if (cpu_is_omap34xx()) + size = FLD_GET(dispc_read_reg(fsz_reg[plane]), 10, 0); + else + BUG(); + + dispc.fifo_size[plane] = size; + } + + enable_clocks(0); +} + +u32 dispc_get_plane_fifo_size(enum omap_plane plane) +{ + return dispc.fifo_size[plane]; +} + +void dispc_setup_plane_fifo(enum omap_plane plane, u32 low, u32 high) +{ + const struct dispc_reg ftrs_reg[] = { DISPC_GFX_FIFO_THRESHOLD, + DISPC_VID_FIFO_THRESHOLD(0), + DISPC_VID_FIFO_THRESHOLD(1) }; + enable_clocks(1); + + DSSDBG("fifo(%d) low/high old %u/%u, new %u/%u\n", + plane, + REG_GET(ftrs_reg[plane], 11, 0), + REG_GET(ftrs_reg[plane], 27, 16), + low, high); + + if (cpu_is_omap24xx()) + dispc_write_reg(ftrs_reg[plane], + FLD_VAL(high, 24, 16) | FLD_VAL(low, 8, 0)); + else + dispc_write_reg(ftrs_reg[plane], + FLD_VAL(high, 27, 16) | FLD_VAL(low, 11, 0)); + + enable_clocks(0); +} + +void dispc_enable_fifomerge(bool enable) +{ + enable_clocks(1); + + DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled"); + REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14); + + enable_clocks(0); +} + +static void _dispc_set_fir(enum omap_plane plane, int hinc, int vinc) +{ + u32 val; + const struct dispc_reg fir_reg[] = { DISPC_VID_FIR(0), + DISPC_VID_FIR(1) }; + + BUG_ON(plane == OMAP_DSS_GFX); + + if (cpu_is_omap24xx()) + val = FLD_VAL(vinc, 27, 16) | FLD_VAL(hinc, 11, 0); + else + val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0); + dispc_write_reg(fir_reg[plane-1], val); +} + +static void _dispc_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu) +{ + u32 val; + const struct dispc_reg ac0_reg[] = { DISPC_VID_ACCU0(0), + DISPC_VID_ACCU0(1) }; + + BUG_ON(plane == OMAP_DSS_GFX); + + val = FLD_VAL(vaccu, 25, 16) | FLD_VAL(haccu, 9, 0); + dispc_write_reg(ac0_reg[plane-1], val); +} + +static void _dispc_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu) +{ + u32 val; + const struct dispc_reg ac1_reg[] = { DISPC_VID_ACCU1(0), + DISPC_VID_ACCU1(1) }; + + BUG_ON(plane == OMAP_DSS_GFX); + + val = FLD_VAL(vaccu, 25, 16) | FLD_VAL(haccu, 9, 0); + dispc_write_reg(ac1_reg[plane-1], val); +} + + +static void _dispc_set_scaling(enum omap_plane plane, + u16 orig_width, u16 orig_height, + u16 out_width, u16 out_height, + bool ilace, bool five_taps, + bool fieldmode) +{ + int fir_hinc; + int fir_vinc; + int hscaleup, vscaleup; + int accu0 = 0; + int accu1 = 0; + u32 l; + + BUG_ON(plane == OMAP_DSS_GFX); + + hscaleup = orig_width <= out_width; + vscaleup = orig_height <= out_height; + + _dispc_set_scale_coef(plane, hscaleup, vscaleup, five_taps); + + if (!orig_width || orig_width == out_width) + fir_hinc = 0; + else + fir_hinc = 1024 * orig_width / out_width; + + if (!orig_height || orig_height == out_height) + fir_vinc = 0; + else + fir_vinc = 1024 * orig_height / out_height; + + _dispc_set_fir(plane, fir_hinc, fir_vinc); + + l = dispc_read_reg(dispc_reg_att[plane]); + l &= ~((0x0f << 5) | (0x3 << 21)); + + l |= fir_hinc ? (1 << 5) : 0; + l |= fir_vinc ? (1 << 6) : 0; + + l |= hscaleup ? 0 : (1 << 7); + l |= vscaleup ? 0 : (1 << 8); + + l |= five_taps ? (1 << 21) : 0; + l |= five_taps ? (1 << 22) : 0; + + dispc_write_reg(dispc_reg_att[plane], l); + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + if (ilace && !fieldmode) { + accu1 = 0; + accu0 = (fir_vinc / 2) & 0x3ff; + if (accu0 >= 1024/2) { + accu1 = 1024/2; + accu0 -= accu1; + } + } + + _dispc_set_vid_accu0(plane, 0, accu0); + _dispc_set_vid_accu1(plane, 0, accu1); +} + +static void _dispc_set_rotation_attrs(enum omap_plane plane, u8 rotation, + bool mirroring, enum omap_color_mode color_mode) +{ + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) { + int vidrot = 0; + + if (mirroring) { + switch (rotation) { + case OMAP_DSS_ROT_0: + vidrot = 2; + break; + case OMAP_DSS_ROT_90: + vidrot = 1; + break; + case OMAP_DSS_ROT_180: + vidrot = 0; + break; + case OMAP_DSS_ROT_270: + vidrot = 3; + break; + } + } else { + switch (rotation) { + case OMAP_DSS_ROT_0: + vidrot = 0; + break; + case OMAP_DSS_ROT_90: + vidrot = 1; + break; + case OMAP_DSS_ROT_180: + vidrot = 2; + break; + case OMAP_DSS_ROT_270: + vidrot = 3; + break; + } + } + + REG_FLD_MOD(dispc_reg_att[plane], vidrot, 13, 12); + + if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270) + REG_FLD_MOD(dispc_reg_att[plane], 0x1, 18, 18); + else + REG_FLD_MOD(dispc_reg_att[plane], 0x0, 18, 18); + } else { + REG_FLD_MOD(dispc_reg_att[plane], 0, 13, 12); + REG_FLD_MOD(dispc_reg_att[plane], 0, 18, 18); + } +} + +static int color_mode_to_bpp(enum omap_color_mode color_mode) +{ + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + return 1; + case OMAP_DSS_COLOR_CLUT2: + return 2; + case OMAP_DSS_COLOR_CLUT4: + return 4; + case OMAP_DSS_COLOR_CLUT8: + return 8; + case OMAP_DSS_COLOR_RGB12U: + case OMAP_DSS_COLOR_RGB16: + case OMAP_DSS_COLOR_ARGB16: + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + return 16; + case OMAP_DSS_COLOR_RGB24P: + return 24; + case OMAP_DSS_COLOR_RGB24U: + case OMAP_DSS_COLOR_ARGB32: + case OMAP_DSS_COLOR_RGBA32: + case OMAP_DSS_COLOR_RGBX32: + return 32; + default: + BUG(); + } +} + +static s32 pixinc(int pixels, u8 ps) +{ + if (pixels == 1) + return 1; + else if (pixels > 1) + return 1 + (pixels - 1) * ps; + else if (pixels < 0) + return 1 - (-pixels + 1) * ps; + else + BUG(); +} + +static void calc_vrfb_rotation_offset(u8 rotation, bool mirror, + u16 screen_width, + u16 width, u16 height, + enum omap_color_mode color_mode, bool fieldmode, + unsigned int field_offset, + unsigned *offset0, unsigned *offset1, + s32 *row_inc, s32 *pix_inc) +{ + u8 ps; + + /* FIXME CLUT formats */ + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + case OMAP_DSS_COLOR_CLUT2: + case OMAP_DSS_COLOR_CLUT4: + case OMAP_DSS_COLOR_CLUT8: + BUG(); + return; + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + ps = 4; + break; + default: + ps = color_mode_to_bpp(color_mode) / 8; + break; + } + + DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width, + width, height); + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + switch (rotation + mirror * 4) { + case OMAP_DSS_ROT_0: + case OMAP_DSS_ROT_180: + /* + * If the pixel format is YUV or UYVY divide the width + * of the image by 2 for 0 and 180 degree rotation. + */ + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + width = width >> 1; + case OMAP_DSS_ROT_90: + case OMAP_DSS_ROT_270: + *offset1 = 0; + if (field_offset) + *offset0 = field_offset * screen_width * ps; + else + *offset0 = 0; + + *row_inc = pixinc(1 + (screen_width - width) + + (fieldmode ? screen_width : 0), + ps); + *pix_inc = pixinc(1, ps); + break; + + case OMAP_DSS_ROT_0 + 4: + case OMAP_DSS_ROT_180 + 4: + /* If the pixel format is YUV or UYVY divide the width + * of the image by 2 for 0 degree and 180 degree + */ + if (color_mode == OMAP_DSS_COLOR_YUV2 || + color_mode == OMAP_DSS_COLOR_UYVY) + width = width >> 1; + case OMAP_DSS_ROT_90 + 4: + case OMAP_DSS_ROT_270 + 4: + *offset1 = 0; + if (field_offset) + *offset0 = field_offset * screen_width * ps; + else + *offset0 = 0; + *row_inc = pixinc(1 - (screen_width + width) - + (fieldmode ? screen_width : 0), + ps); + *pix_inc = pixinc(1, ps); + break; + + default: + BUG(); + } +} + +static void calc_dma_rotation_offset(u8 rotation, bool mirror, + u16 screen_width, + u16 width, u16 height, + enum omap_color_mode color_mode, bool fieldmode, + unsigned int field_offset, + unsigned *offset0, unsigned *offset1, + s32 *row_inc, s32 *pix_inc) +{ + u8 ps; + u16 fbw, fbh; + + /* FIXME CLUT formats */ + switch (color_mode) { + case OMAP_DSS_COLOR_CLUT1: + case OMAP_DSS_COLOR_CLUT2: + case OMAP_DSS_COLOR_CLUT4: + case OMAP_DSS_COLOR_CLUT8: + BUG(); + return; + default: + ps = color_mode_to_bpp(color_mode) / 8; + break; + } + + DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width, + width, height); + + /* width & height are overlay sizes, convert to fb sizes */ + + if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) { + fbw = width; + fbh = height; + } else { + fbw = height; + fbh = width; + } + + /* + * field 0 = even field = bottom field + * field 1 = odd field = top field + */ + switch (rotation + mirror * 4) { + case OMAP_DSS_ROT_0: + *offset1 = 0; + if (field_offset) + *offset0 = *offset1 + field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(1 + (screen_width - fbw) + + (fieldmode ? screen_width : 0), + ps); + *pix_inc = pixinc(1, ps); + break; + case OMAP_DSS_ROT_90: + *offset1 = screen_width * (fbh - 1) * ps; + if (field_offset) + *offset0 = *offset1 + field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(screen_width * (fbh - 1) + 1 + + (fieldmode ? 1 : 0), ps); + *pix_inc = pixinc(-screen_width, ps); + break; + case OMAP_DSS_ROT_180: + *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(-1 - + (screen_width - fbw) - + (fieldmode ? screen_width : 0), + ps); + *pix_inc = pixinc(-1, ps); + break; + case OMAP_DSS_ROT_270: + *offset1 = (fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(-screen_width * (fbh - 1) - 1 - + (fieldmode ? 1 : 0), ps); + *pix_inc = pixinc(screen_width, ps); + break; + + /* mirroring */ + case OMAP_DSS_ROT_0 + 4: + *offset1 = (fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 + field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(screen_width * 2 - 1 + + (fieldmode ? screen_width : 0), + ps); + *pix_inc = pixinc(-1, ps); + break; + + case OMAP_DSS_ROT_90 + 4: + *offset1 = 0; + if (field_offset) + *offset0 = *offset1 + field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(-screen_width * (fbh - 1) + 1 + + (fieldmode ? 1 : 0), + ps); + *pix_inc = pixinc(screen_width, ps); + break; + + case OMAP_DSS_ROT_180 + 4: + *offset1 = screen_width * (fbh - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * screen_width * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(1 - screen_width * 2 - + (fieldmode ? screen_width : 0), + ps); + *pix_inc = pixinc(1, ps); + break; + + case OMAP_DSS_ROT_270 + 4: + *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps; + if (field_offset) + *offset0 = *offset1 - field_offset * ps; + else + *offset0 = *offset1; + *row_inc = pixinc(screen_width * (fbh - 1) - 1 - + (fieldmode ? 1 : 0), + ps); + *pix_inc = pixinc(-screen_width, ps); + break; + + default: + BUG(); + } +} + +static unsigned long calc_fclk_five_taps(u16 width, u16 height, + u16 out_width, u16 out_height, enum omap_color_mode color_mode) +{ + u32 fclk = 0; + /* FIXME venc pclk? */ + u64 tmp, pclk = dispc_pclk_rate(); + + if (height > out_height) { + /* FIXME get real display PPL */ + unsigned int ppl = 800; + + tmp = pclk * height * out_width; + do_div(tmp, 2 * out_height * ppl); + fclk = tmp; + + if (height > 2 * out_height && ppl != out_width) { + tmp = pclk * (height - 2 * out_height) * out_width; + do_div(tmp, 2 * out_height * (ppl - out_width)); + fclk = max(fclk, (u32) tmp); + } + } + + if (width > out_width) { + tmp = pclk * width; + do_div(tmp, out_width); + fclk = max(fclk, (u32) tmp); + + if (color_mode == OMAP_DSS_COLOR_RGB24U) + fclk <<= 1; + } + + return fclk; +} + +static unsigned long calc_fclk(u16 width, u16 height, + u16 out_width, u16 out_height) +{ + unsigned int hf, vf; + + /* + * FIXME how to determine the 'A' factor + * for the no downscaling case ? + */ + + if (width > 3 * out_width) + hf = 4; + else if (width > 2 * out_width) + hf = 3; + else if (width > out_width) + hf = 2; + else + hf = 1; + + if (height > out_height) + vf = 2; + else + vf = 1; + + /* FIXME venc pclk? */ + return dispc_pclk_rate() * vf * hf; +} + +void dispc_set_channel_out(enum omap_plane plane, enum omap_channel channel_out) +{ + enable_clocks(1); + _dispc_set_channel_out(plane, channel_out); + enable_clocks(0); +} + +static int _dispc_setup_plane(enum omap_plane plane, + u32 paddr, u16 screen_width, + u16 pos_x, u16 pos_y, + u16 width, u16 height, + u16 out_width, u16 out_height, + enum omap_color_mode color_mode, + bool ilace, + enum omap_dss_rotation_type rotation_type, + u8 rotation, int mirror, + u8 global_alpha) +{ + const int maxdownscale = cpu_is_omap34xx() ? 4 : 2; + bool five_taps = 0; + bool fieldmode = 0; + int cconv = 0; + unsigned offset0, offset1; + s32 row_inc; + s32 pix_inc; + u16 frame_height = height; + unsigned int field_offset = 0; + + if (paddr == 0) + return -EINVAL; + + if (ilace && height == out_height) + fieldmode = 1; + + if (ilace) { + if (fieldmode) + height /= 2; + pos_y /= 2; + out_height /= 2; + + DSSDBG("adjusting for ilace: height %d, pos_y %d, " + "out_height %d\n", + height, pos_y, out_height); + } + + if (plane == OMAP_DSS_GFX) { + if (width != out_width || height != out_height) + return -EINVAL; + + switch (color_mode) { + case OMAP_DSS_COLOR_ARGB16: + case OMAP_DSS_COLOR_ARGB32: + case OMAP_DSS_COLOR_RGBA32: + case OMAP_DSS_COLOR_RGBX32: + if (cpu_is_omap24xx()) + return -EINVAL; + /* fall through */ + case OMAP_DSS_COLOR_RGB12U: + case OMAP_DSS_COLOR_RGB16: + case OMAP_DSS_COLOR_RGB24P: + case OMAP_DSS_COLOR_RGB24U: + break; + + default: + return -EINVAL; + } + } else { + /* video plane */ + + unsigned long fclk = 0; + + if (out_width < width / maxdownscale || + out_width > width * 8) + return -EINVAL; + + if (out_height < height / maxdownscale || + out_height > height * 8) + return -EINVAL; + + switch (color_mode) { + case OMAP_DSS_COLOR_RGBX32: + case OMAP_DSS_COLOR_RGB12U: + if (cpu_is_omap24xx()) + return -EINVAL; + /* fall through */ + case OMAP_DSS_COLOR_RGB16: + case OMAP_DSS_COLOR_RGB24P: + case OMAP_DSS_COLOR_RGB24U: + break; + + case OMAP_DSS_COLOR_ARGB16: + case OMAP_DSS_COLOR_ARGB32: + case OMAP_DSS_COLOR_RGBA32: + if (cpu_is_omap24xx()) + return -EINVAL; + if (plane == OMAP_DSS_VIDEO1) + return -EINVAL; + break; + + case OMAP_DSS_COLOR_YUV2: + case OMAP_DSS_COLOR_UYVY: + cconv = 1; + break; + + default: + return -EINVAL; + } + + /* Must use 5-tap filter? */ + five_taps = height > out_height * 2; + + if (!five_taps) { + fclk = calc_fclk(width, height, + out_width, out_height); + + /* Try 5-tap filter if 3-tap fclk is too high */ + if (cpu_is_omap34xx() && height > out_height && + fclk > dispc_fclk_rate()) + five_taps = true; + } + + if (width > (2048 >> five_taps)) { + DSSERR("failed to set up scaling, fclk too low\n"); + return -EINVAL; + } + + if (five_taps) + fclk = calc_fclk_five_taps(width, height, + out_width, out_height, color_mode); + + DSSDBG("required fclk rate = %lu Hz\n", fclk); + DSSDBG("current fclk rate = %lu Hz\n", dispc_fclk_rate()); + + if (fclk > dispc_fclk_rate()) { + DSSERR("failed to set up scaling, " + "required fclk rate = %lu Hz, " + "current fclk rate = %lu Hz\n", + fclk, dispc_fclk_rate()); + return -EINVAL; + } + } + + if (ilace && !fieldmode) { + /* + * when downscaling the bottom field may have to start several + * source lines below the top field. Unfortunately ACCUI + * registers will only hold the fractional part of the offset + * so the integer part must be added to the base address of the + * bottom field. + */ + if (!height || height == out_height) + field_offset = 0; + else + field_offset = height / out_height / 2; + } + + /* Fields are independent but interleaved in memory. */ + if (fieldmode) + field_offset = 1; + + if (rotation_type == OMAP_DSS_ROT_DMA) + calc_dma_rotation_offset(rotation, mirror, + screen_width, width, frame_height, color_mode, + fieldmode, field_offset, + &offset0, &offset1, &row_inc, &pix_inc); + else + calc_vrfb_rotation_offset(rotation, mirror, + screen_width, width, frame_height, color_mode, + fieldmode, field_offset, + &offset0, &offset1, &row_inc, &pix_inc); + + DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n", + offset0, offset1, row_inc, pix_inc); + + _dispc_set_color_mode(plane, color_mode); + + _dispc_set_plane_ba0(plane, paddr + offset0); + _dispc_set_plane_ba1(plane, paddr + offset1); + + _dispc_set_row_inc(plane, row_inc); + _dispc_set_pix_inc(plane, pix_inc); + + DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, width, height, + out_width, out_height); + + _dispc_set_plane_pos(plane, pos_x, pos_y); + + _dispc_set_pic_size(plane, width, height); + + if (plane != OMAP_DSS_GFX) { + _dispc_set_scaling(plane, width, height, + out_width, out_height, + ilace, five_taps, fieldmode); + _dispc_set_vid_size(plane, out_width, out_height); + _dispc_set_vid_color_conv(plane, cconv); + } + + _dispc_set_rotation_attrs(plane, rotation, mirror, color_mode); + + if (plane != OMAP_DSS_VIDEO1) + _dispc_setup_global_alpha(plane, global_alpha); + + return 0; +} + +static void _dispc_enable_plane(enum omap_plane plane, bool enable) +{ + REG_FLD_MOD(dispc_reg_att[plane], enable ? 1 : 0, 0, 0); +} + +static void dispc_disable_isr(void *data, u32 mask) +{ + struct completion *compl = data; + complete(compl); +} + +static void _enable_lcd_out(bool enable) +{ + REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 0, 0); +} + +void dispc_enable_lcd_out(bool enable) +{ + struct completion frame_done_completion; + bool is_on; + int r; + + enable_clocks(1); + + /* When we disable LCD output, we need to wait until frame is done. + * Otherwise the DSS is still working, and turning off the clocks + * prevents DSS from going to OFF mode */ + is_on = REG_GET(DISPC_CONTROL, 0, 0); + + if (!enable && is_on) { + init_completion(&frame_done_completion); + + r = omap_dispc_register_isr(dispc_disable_isr, + &frame_done_completion, + DISPC_IRQ_FRAMEDONE); + + if (r) + DSSERR("failed to register FRAMEDONE isr\n"); + } + + _enable_lcd_out(enable); + + if (!enable && is_on) { + if (!wait_for_completion_timeout(&frame_done_completion, + msecs_to_jiffies(100))) + DSSERR("timeout waiting for FRAME DONE\n"); + + r = omap_dispc_unregister_isr(dispc_disable_isr, + &frame_done_completion, + DISPC_IRQ_FRAMEDONE); + + if (r) + DSSERR("failed to unregister FRAMEDONE isr\n"); + } + + enable_clocks(0); +} + +static void _enable_digit_out(bool enable) +{ + REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1); +} + +void dispc_enable_digit_out(bool enable) +{ + struct completion frame_done_completion; + int r; + + enable_clocks(1); + + if (REG_GET(DISPC_CONTROL, 1, 1) == enable) { + enable_clocks(0); + return; + } + + if (enable) { + unsigned long flags; + /* When we enable digit output, we'll get an extra digit + * sync lost interrupt, that we need to ignore */ + spin_lock_irqsave(&dispc.irq_lock, flags); + dispc.irq_error_mask &= ~DISPC_IRQ_SYNC_LOST_DIGIT; + _omap_dispc_set_irqs(); + spin_unlock_irqrestore(&dispc.irq_lock, flags); + } + + /* When we disable digit output, we need to wait until fields are done. + * Otherwise the DSS is still working, and turning off the clocks + * prevents DSS from going to OFF mode. And when enabling, we need to + * wait for the extra sync losts */ + init_completion(&frame_done_completion); + + r = omap_dispc_register_isr(dispc_disable_isr, &frame_done_completion, + DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD); + if (r) + DSSERR("failed to register EVSYNC isr\n"); + + _enable_digit_out(enable); + + /* XXX I understand from TRM that we should only wait for the + * current field to complete. But it seems we have to wait + * for both fields */ + if (!wait_for_completion_timeout(&frame_done_completion, + msecs_to_jiffies(100))) + DSSERR("timeout waiting for EVSYNC\n"); + + if (!wait_for_completion_timeout(&frame_done_completion, + msecs_to_jiffies(100))) + DSSERR("timeout waiting for EVSYNC\n"); + + r = omap_dispc_unregister_isr(dispc_disable_isr, + &frame_done_completion, + DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD); + if (r) + DSSERR("failed to unregister EVSYNC isr\n"); + + if (enable) { + unsigned long flags; + spin_lock_irqsave(&dispc.irq_lock, flags); + dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR; + dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT); + _omap_dispc_set_irqs(); + spin_unlock_irqrestore(&dispc.irq_lock, flags); + } + + enable_clocks(0); +} + +void dispc_lcd_enable_signal_polarity(bool act_high) +{ + enable_clocks(1); + REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29); + enable_clocks(0); +} + +void dispc_lcd_enable_signal(bool enable) +{ + enable_clocks(1); + REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28); + enable_clocks(0); +} + +void dispc_pck_free_enable(bool enable) +{ + enable_clocks(1); + REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27); + enable_clocks(0); +} + +void dispc_enable_fifohandcheck(bool enable) +{ + enable_clocks(1); + REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 16, 16); + enable_clocks(0); +} + + +void dispc_set_lcd_display_type(enum omap_lcd_display_type type) +{ + int mode; + + switch (type) { + case OMAP_DSS_LCD_DISPLAY_STN: + mode = 0; + break; + + case OMAP_DSS_LCD_DISPLAY_TFT: + mode = 1; + break; + + default: + BUG(); + return; + } + + enable_clocks(1); + REG_FLD_MOD(DISPC_CONTROL, mode, 3, 3); + enable_clocks(0); +} + +void dispc_set_loadmode(enum omap_dss_load_mode mode) +{ + enable_clocks(1); + REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1); + enable_clocks(0); +} + + +void dispc_set_default_color(enum omap_channel channel, u32 color) +{ + const struct dispc_reg def_reg[] = { DISPC_DEFAULT_COLOR0, + DISPC_DEFAULT_COLOR1 }; + + enable_clocks(1); + dispc_write_reg(def_reg[channel], color); + enable_clocks(0); +} + +u32 dispc_get_default_color(enum omap_channel channel) +{ + const struct dispc_reg def_reg[] = { DISPC_DEFAULT_COLOR0, + DISPC_DEFAULT_COLOR1 }; + u32 l; + + BUG_ON(channel != OMAP_DSS_CHANNEL_DIGIT && + channel != OMAP_DSS_CHANNEL_LCD); + + enable_clocks(1); + l = dispc_read_reg(def_reg[channel]); + enable_clocks(0); + + return l; +} + +void dispc_set_trans_key(enum omap_channel ch, + enum omap_dss_trans_key_type type, + u32 trans_key) +{ + const struct dispc_reg tr_reg[] = { + DISPC_TRANS_COLOR0, DISPC_TRANS_COLOR1 }; + + enable_clocks(1); + if (ch == OMAP_DSS_CHANNEL_LCD) + REG_FLD_MOD(DISPC_CONFIG, type, 11, 11); + else /* OMAP_DSS_CHANNEL_DIGIT */ + REG_FLD_MOD(DISPC_CONFIG, type, 13, 13); + + dispc_write_reg(tr_reg[ch], trans_key); + enable_clocks(0); +} + +void dispc_get_trans_key(enum omap_channel ch, + enum omap_dss_trans_key_type *type, + u32 *trans_key) +{ + const struct dispc_reg tr_reg[] = { + DISPC_TRANS_COLOR0, DISPC_TRANS_COLOR1 }; + + enable_clocks(1); + if (type) { + if (ch == OMAP_DSS_CHANNEL_LCD) + *type = REG_GET(DISPC_CONFIG, 11, 11); + else if (ch == OMAP_DSS_CHANNEL_DIGIT) + *type = REG_GET(DISPC_CONFIG, 13, 13); + else + BUG(); + } + + if (trans_key) + *trans_key = dispc_read_reg(tr_reg[ch]); + enable_clocks(0); +} + +void dispc_enable_trans_key(enum omap_channel ch, bool enable) +{ + enable_clocks(1); + if (ch == OMAP_DSS_CHANNEL_LCD) + REG_FLD_MOD(DISPC_CONFIG, enable, 10, 10); + else /* OMAP_DSS_CHANNEL_DIGIT */ + REG_FLD_MOD(DISPC_CONFIG, enable, 12, 12); + enable_clocks(0); +} +void dispc_enable_alpha_blending(enum omap_channel ch, bool enable) +{ + if (cpu_is_omap24xx()) + return; + + enable_clocks(1); + if (ch == OMAP_DSS_CHANNEL_LCD) + REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18); + else /* OMAP_DSS_CHANNEL_DIGIT */ + REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19); + enable_clocks(0); +} +bool dispc_alpha_blending_enabled(enum omap_channel ch) +{ + bool enabled; + + if (cpu_is_omap24xx()) + return false; + + enable_clocks(1); + if (ch == OMAP_DSS_CHANNEL_LCD) + enabled = REG_GET(DISPC_CONFIG, 18, 18); + else if (ch == OMAP_DSS_CHANNEL_DIGIT) + enabled = REG_GET(DISPC_CONFIG, 18, 18); + else + BUG(); + enable_clocks(0); + + return enabled; + +} + + +bool dispc_trans_key_enabled(enum omap_channel ch) +{ + bool enabled; + + enable_clocks(1); + if (ch == OMAP_DSS_CHANNEL_LCD) + enabled = REG_GET(DISPC_CONFIG, 10, 10); + else if (ch == OMAP_DSS_CHANNEL_DIGIT) + enabled = REG_GET(DISPC_CONFIG, 12, 12); + else + BUG(); + enable_clocks(0); + + return enabled; +} + + +void dispc_set_tft_data_lines(u8 data_lines) +{ + int code; + + switch (data_lines) { + case 12: + code = 0; + break; + case 16: + code = 1; + break; + case 18: + code = 2; + break; + case 24: + code = 3; + break; + default: + BUG(); + return; + } + + enable_clocks(1); + REG_FLD_MOD(DISPC_CONTROL, code, 9, 8); + enable_clocks(0); +} + +void dispc_set_parallel_interface_mode(enum omap_parallel_interface_mode mode) +{ + u32 l; + int stallmode; + int gpout0 = 1; + int gpout1; + + switch (mode) { + case OMAP_DSS_PARALLELMODE_BYPASS: + stallmode = 0; + gpout1 = 1; + break; + + case OMAP_DSS_PARALLELMODE_RFBI: + stallmode = 1; + gpout1 = 0; + break; + + case OMAP_DSS_PARALLELMODE_DSI: + stallmode = 1; + gpout1 = 1; + break; + + default: + BUG(); + return; + } + + enable_clocks(1); + + l = dispc_read_reg(DISPC_CONTROL); + + l = FLD_MOD(l, stallmode, 11, 11); + l = FLD_MOD(l, gpout0, 15, 15); + l = FLD_MOD(l, gpout1, 16, 16); + + dispc_write_reg(DISPC_CONTROL, l); + + enable_clocks(0); +} + +static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp, + int vsw, int vfp, int vbp) +{ + if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) { + if (hsw < 1 || hsw > 64 || + hfp < 1 || hfp > 256 || + hbp < 1 || hbp > 256 || + vsw < 1 || vsw > 64 || + vfp < 0 || vfp > 255 || + vbp < 0 || vbp > 255) + return false; + } else { + if (hsw < 1 || hsw > 256 || + hfp < 1 || hfp > 4096 || + hbp < 1 || hbp > 4096 || + vsw < 1 || vsw > 256 || + vfp < 0 || vfp > 4095 || + vbp < 0 || vbp > 4095) + return false; + } + + return true; +} + +bool dispc_lcd_timings_ok(struct omap_video_timings *timings) +{ + return _dispc_lcd_timings_ok(timings->hsw, timings->hfp, + timings->hbp, timings->vsw, + timings->vfp, timings->vbp); +} + +static void _dispc_set_lcd_timings(int hsw, int hfp, int hbp, + int vsw, int vfp, int vbp) +{ + u32 timing_h, timing_v; + + if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) { + timing_h = FLD_VAL(hsw-1, 5, 0) | FLD_VAL(hfp-1, 15, 8) | + FLD_VAL(hbp-1, 27, 20); + + timing_v = FLD_VAL(vsw-1, 5, 0) | FLD_VAL(vfp, 15, 8) | + FLD_VAL(vbp, 27, 20); + } else { + timing_h = FLD_VAL(hsw-1, 7, 0) | FLD_VAL(hfp-1, 19, 8) | + FLD_VAL(hbp-1, 31, 20); + + timing_v = FLD_VAL(vsw-1, 7, 0) | FLD_VAL(vfp, 19, 8) | + FLD_VAL(vbp, 31, 20); + } + + enable_clocks(1); + dispc_write_reg(DISPC_TIMING_H, timing_h); + dispc_write_reg(DISPC_TIMING_V, timing_v); + enable_clocks(0); +} + +/* change name to mode? */ +void dispc_set_lcd_timings(struct omap_video_timings *timings) +{ + unsigned xtot, ytot; + unsigned long ht, vt; + + if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp, + timings->hbp, timings->vsw, + timings->vfp, timings->vbp)) + BUG(); + + _dispc_set_lcd_timings(timings->hsw, timings->hfp, timings->hbp, + timings->vsw, timings->vfp, timings->vbp); + + dispc_set_lcd_size(timings->x_res, timings->y_res); + + xtot = timings->x_res + timings->hfp + timings->hsw + timings->hbp; + ytot = timings->y_res + timings->vfp + timings->vsw + timings->vbp; + + ht = (timings->pixel_clock * 1000) / xtot; + vt = (timings->pixel_clock * 1000) / xtot / ytot; + + DSSDBG("xres %u yres %u\n", timings->x_res, timings->y_res); + DSSDBG("pck %u\n", timings->pixel_clock); + DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n", + timings->hsw, timings->hfp, timings->hbp, + timings->vsw, timings->vfp, timings->vbp); + + DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt); +} + +static void dispc_set_lcd_divisor(u16 lck_div, u16 pck_div) +{ + BUG_ON(lck_div < 1); + BUG_ON(pck_div < 2); + + enable_clocks(1); + dispc_write_reg(DISPC_DIVISOR, + FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0)); + enable_clocks(0); +} + +static void dispc_get_lcd_divisor(int *lck_div, int *pck_div) +{ + u32 l; + l = dispc_read_reg(DISPC_DIVISOR); + *lck_div = FLD_GET(l, 23, 16); + *pck_div = FLD_GET(l, 7, 0); +} + +unsigned long dispc_fclk_rate(void) +{ + unsigned long r = 0; + + if (dss_get_dispc_clk_source() == 0) + r = dss_clk_get_rate(DSS_CLK_FCK1); + else +#ifdef CONFIG_OMAP2_DSS_DSI + r = dsi_get_dsi1_pll_rate(); +#else + BUG(); +#endif + return r; +} + +unsigned long dispc_lclk_rate(void) +{ + int lcd; + unsigned long r; + u32 l; + + l = dispc_read_reg(DISPC_DIVISOR); + + lcd = FLD_GET(l, 23, 16); + + r = dispc_fclk_rate(); + + return r / lcd; +} + +unsigned long dispc_pclk_rate(void) +{ + int lcd, pcd; + unsigned long r; + u32 l; + + l = dispc_read_reg(DISPC_DIVISOR); + + lcd = FLD_GET(l, 23, 16); + pcd = FLD_GET(l, 7, 0); + + r = dispc_fclk_rate(); + + return r / lcd / pcd; +} + +void dispc_dump_clocks(struct seq_file *s) +{ + int lcd, pcd; + + enable_clocks(1); + + dispc_get_lcd_divisor(&lcd, &pcd); + + seq_printf(s, "- DISPC -\n"); + + seq_printf(s, "dispc fclk source = %s\n", + dss_get_dispc_clk_source() == 0 ? + "dss1_alwon_fclk" : "dsi1_pll_fclk"); + + seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate()); + seq_printf(s, "lck\t\t%-16lulck div\t%u\n", dispc_lclk_rate(), lcd); + seq_printf(s, "pck\t\t%-16lupck div\t%u\n", dispc_pclk_rate(), pcd); + + enable_clocks(0); +} + +void dispc_dump_regs(struct seq_file *s) +{ +#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dispc_read_reg(r)) + + dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1); + + DUMPREG(DISPC_REVISION); + DUMPREG(DISPC_SYSCONFIG); + DUMPREG(DISPC_SYSSTATUS); + DUMPREG(DISPC_IRQSTATUS); + DUMPREG(DISPC_IRQENABLE); + DUMPREG(DISPC_CONTROL); + DUMPREG(DISPC_CONFIG); + DUMPREG(DISPC_CAPABLE); + DUMPREG(DISPC_DEFAULT_COLOR0); + DUMPREG(DISPC_DEFAULT_COLOR1); + DUMPREG(DISPC_TRANS_COLOR0); + DUMPREG(DISPC_TRANS_COLOR1); + DUMPREG(DISPC_LINE_STATUS); + DUMPREG(DISPC_LINE_NUMBER); + DUMPREG(DISPC_TIMING_H); + DUMPREG(DISPC_TIMING_V); + DUMPREG(DISPC_POL_FREQ); + DUMPREG(DISPC_DIVISOR); + DUMPREG(DISPC_GLOBAL_ALPHA); + DUMPREG(DISPC_SIZE_DIG); + DUMPREG(DISPC_SIZE_LCD); + + DUMPREG(DISPC_GFX_BA0); + DUMPREG(DISPC_GFX_BA1); + DUMPREG(DISPC_GFX_POSITION); + DUMPREG(DISPC_GFX_SIZE); + DUMPREG(DISPC_GFX_ATTRIBUTES); + DUMPREG(DISPC_GFX_FIFO_THRESHOLD); + DUMPREG(DISPC_GFX_FIFO_SIZE_STATUS); + DUMPREG(DISPC_GFX_ROW_INC); + DUMPREG(DISPC_GFX_PIXEL_INC); + DUMPREG(DISPC_GFX_WINDOW_SKIP); + DUMPREG(DISPC_GFX_TABLE_BA); + + DUMPREG(DISPC_DATA_CYCLE1); + DUMPREG(DISPC_DATA_CYCLE2); + DUMPREG(DISPC_DATA_CYCLE3); + + DUMPREG(DISPC_CPR_COEF_R); + DUMPREG(DISPC_CPR_COEF_G); + DUMPREG(DISPC_CPR_COEF_B); + + DUMPREG(DISPC_GFX_PRELOAD); + + DUMPREG(DISPC_VID_BA0(0)); + DUMPREG(DISPC_VID_BA1(0)); + DUMPREG(DISPC_VID_POSITION(0)); + DUMPREG(DISPC_VID_SIZE(0)); + DUMPREG(DISPC_VID_ATTRIBUTES(0)); + DUMPREG(DISPC_VID_FIFO_THRESHOLD(0)); + DUMPREG(DISPC_VID_FIFO_SIZE_STATUS(0)); + DUMPREG(DISPC_VID_ROW_INC(0)); + DUMPREG(DISPC_VID_PIXEL_INC(0)); + DUMPREG(DISPC_VID_FIR(0)); + DUMPREG(DISPC_VID_PICTURE_SIZE(0)); + DUMPREG(DISPC_VID_ACCU0(0)); + DUMPREG(DISPC_VID_ACCU1(0)); + + DUMPREG(DISPC_VID_BA0(1)); + DUMPREG(DISPC_VID_BA1(1)); + DUMPREG(DISPC_VID_POSITION(1)); + DUMPREG(DISPC_VID_SIZE(1)); + DUMPREG(DISPC_VID_ATTRIBUTES(1)); + DUMPREG(DISPC_VID_FIFO_THRESHOLD(1)); + DUMPREG(DISPC_VID_FIFO_SIZE_STATUS(1)); + DUMPREG(DISPC_VID_ROW_INC(1)); + DUMPREG(DISPC_VID_PIXEL_INC(1)); + DUMPREG(DISPC_VID_FIR(1)); + DUMPREG(DISPC_VID_PICTURE_SIZE(1)); + DUMPREG(DISPC_VID_ACCU0(1)); + DUMPREG(DISPC_VID_ACCU1(1)); + + DUMPREG(DISPC_VID_FIR_COEF_H(0, 0)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 1)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 2)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 3)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 4)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 5)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 6)); + DUMPREG(DISPC_VID_FIR_COEF_H(0, 7)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 0)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 1)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 2)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 3)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 4)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 5)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 6)); + DUMPREG(DISPC_VID_FIR_COEF_HV(0, 7)); + DUMPREG(DISPC_VID_CONV_COEF(0, 0)); + DUMPREG(DISPC_VID_CONV_COEF(0, 1)); + DUMPREG(DISPC_VID_CONV_COEF(0, 2)); + DUMPREG(DISPC_VID_CONV_COEF(0, 3)); + DUMPREG(DISPC_VID_CONV_COEF(0, 4)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 0)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 1)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 2)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 3)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 4)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 5)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 6)); + DUMPREG(DISPC_VID_FIR_COEF_V(0, 7)); + + DUMPREG(DISPC_VID_FIR_COEF_H(1, 0)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 1)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 2)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 3)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 4)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 5)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 6)); + DUMPREG(DISPC_VID_FIR_COEF_H(1, 7)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 0)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 1)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 2)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 3)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 4)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 5)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 6)); + DUMPREG(DISPC_VID_FIR_COEF_HV(1, 7)); + DUMPREG(DISPC_VID_CONV_COEF(1, 0)); + DUMPREG(DISPC_VID_CONV_COEF(1, 1)); + DUMPREG(DISPC_VID_CONV_COEF(1, 2)); + DUMPREG(DISPC_VID_CONV_COEF(1, 3)); + DUMPREG(DISPC_VID_CONV_COEF(1, 4)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 0)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 1)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 2)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 3)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 4)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 5)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 6)); + DUMPREG(DISPC_VID_FIR_COEF_V(1, 7)); + + DUMPREG(DISPC_VID_PRELOAD(0)); + DUMPREG(DISPC_VID_PRELOAD(1)); + + dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1); +#undef DUMPREG +} + +static void _dispc_set_pol_freq(bool onoff, bool rf, bool ieo, bool ipc, + bool ihs, bool ivs, u8 acbi, u8 acb) +{ + u32 l = 0; + + DSSDBG("onoff %d rf %d ieo %d ipc %d ihs %d ivs %d acbi %d acb %d\n", + onoff, rf, ieo, ipc, ihs, ivs, acbi, acb); + + l |= FLD_VAL(onoff, 17, 17); + l |= FLD_VAL(rf, 16, 16); + l |= FLD_VAL(ieo, 15, 15); + l |= FLD_VAL(ipc, 14, 14); + l |= FLD_VAL(ihs, 13, 13); + l |= FLD_VAL(ivs, 12, 12); + l |= FLD_VAL(acbi, 11, 8); + l |= FLD_VAL(acb, 7, 0); + + enable_clocks(1); + dispc_write_reg(DISPC_POL_FREQ, l); + enable_clocks(0); +} + +void dispc_set_pol_freq(enum omap_panel_config config, u8 acbi, u8 acb) +{ + _dispc_set_pol_freq((config & OMAP_DSS_LCD_ONOFF) != 0, + (config & OMAP_DSS_LCD_RF) != 0, + (config & OMAP_DSS_LCD_IEO) != 0, + (config & OMAP_DSS_LCD_IPC) != 0, + (config & OMAP_DSS_LCD_IHS) != 0, + (config & OMAP_DSS_LCD_IVS) != 0, + acbi, acb); +} + +/* with fck as input clock rate, find dispc dividers that produce req_pck */ +void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck, + struct dispc_clock_info *cinfo) +{ + u16 pcd_min = is_tft ? 2 : 3; + unsigned long best_pck; + u16 best_ld, cur_ld; + u16 best_pd, cur_pd; + + best_pck = 0; + best_ld = 0; + best_pd = 0; + + for (cur_ld = 1; cur_ld <= 255; ++cur_ld) { + unsigned long lck = fck / cur_ld; + + for (cur_pd = pcd_min; cur_pd <= 255; ++cur_pd) { + unsigned long pck = lck / cur_pd; + long old_delta = abs(best_pck - req_pck); + long new_delta = abs(pck - req_pck); + + if (best_pck == 0 || new_delta < old_delta) { + best_pck = pck; + best_ld = cur_ld; + best_pd = cur_pd; + + if (pck == req_pck) + goto found; + } + + if (pck < req_pck) + break; + } + + if (lck / pcd_min < req_pck) + break; + } + +found: + cinfo->lck_div = best_ld; + cinfo->pck_div = best_pd; + cinfo->lck = fck / cinfo->lck_div; + cinfo->pck = cinfo->lck / cinfo->pck_div; +} + +/* calculate clock rates using dividers in cinfo */ +int dispc_calc_clock_rates(unsigned long dispc_fclk_rate, + struct dispc_clock_info *cinfo) +{ + if (cinfo->lck_div > 255 || cinfo->lck_div == 0) + return -EINVAL; + if (cinfo->pck_div < 2 || cinfo->pck_div > 255) + return -EINVAL; + + cinfo->lck = dispc_fclk_rate / cinfo->lck_div; + cinfo->pck = cinfo->lck / cinfo->pck_div; + + return 0; +} + +int dispc_set_clock_div(struct dispc_clock_info *cinfo) +{ + DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div); + DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div); + + dispc_set_lcd_divisor(cinfo->lck_div, cinfo->pck_div); + + return 0; +} + +int dispc_get_clock_div(struct dispc_clock_info *cinfo) +{ + unsigned long fck; + + fck = dispc_fclk_rate(); + + cinfo->lck_div = REG_GET(DISPC_DIVISOR, 23, 16); + cinfo->pck_div = REG_GET(DISPC_DIVISOR, 7, 0); + + cinfo->lck = fck / cinfo->lck_div; + cinfo->pck = cinfo->lck / cinfo->pck_div; + + return 0; +} + +/* dispc.irq_lock has to be locked by the caller */ +static void _omap_dispc_set_irqs(void) +{ + u32 mask; + u32 old_mask; + int i; + struct omap_dispc_isr_data *isr_data; + + mask = dispc.irq_error_mask; + + for (i = 0; i < DISPC_MAX_NR_ISRS; i++) { + isr_data = &dispc.registered_isr[i]; + + if (isr_data->isr == NULL) + continue; + + mask |= isr_data->mask; + } + + enable_clocks(1); + + old_mask = dispc_read_reg(DISPC_IRQENABLE); + /* clear the irqstatus for newly enabled irqs */ + dispc_write_reg(DISPC_IRQSTATUS, (mask ^ old_mask) & mask); + + dispc_write_reg(DISPC_IRQENABLE, mask); + + enable_clocks(0); +} + +int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask) +{ + int i; + int ret; + unsigned long flags; + struct omap_dispc_isr_data *isr_data; + + if (isr == NULL) + return -EINVAL; + + spin_lock_irqsave(&dispc.irq_lock, flags); + + /* check for duplicate entry */ + for (i = 0; i < DISPC_MAX_NR_ISRS; i++) { + isr_data = &dispc.registered_isr[i]; + if (isr_data->isr == isr && isr_data->arg == arg && + isr_data->mask == mask) { + ret = -EINVAL; + goto err; + } + } + + isr_data = NULL; + ret = -EBUSY; + + for (i = 0; i < DISPC_MAX_NR_ISRS; i++) { + isr_data = &dispc.registered_isr[i]; + + if (isr_data->isr != NULL) + continue; + + isr_data->isr = isr; + isr_data->arg = arg; + isr_data->mask = mask; + ret = 0; + + break; + } + + _omap_dispc_set_irqs(); + + spin_unlock_irqrestore(&dispc.irq_lock, flags); + + return 0; +err: + spin_unlock_irqrestore(&dispc.irq_lock, flags); + + return ret; +} +EXPORT_SYMBOL(omap_dispc_register_isr); + +int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask) +{ + int i; + unsigned long flags; + int ret = -EINVAL; + struct omap_dispc_isr_data *isr_data; + + spin_lock_irqsave(&dispc.irq_lock, flags); + + for (i = 0; i < DISPC_MAX_NR_ISRS; i++) { + isr_data = &dispc.registered_isr[i]; + if (isr_data->isr != isr || isr_data->arg != arg || + isr_data->mask != mask) + continue; + + /* found the correct isr */ + + isr_data->isr = NULL; + isr_data->arg = NULL; + isr_data->mask = 0; + + ret = 0; + break; + } + + if (ret == 0) + _omap_dispc_set_irqs(); + + spin_unlock_irqrestore(&dispc.irq_lock, flags); + + return ret; +} +EXPORT_SYMBOL(omap_dispc_unregister_isr); + +#ifdef DEBUG +static void print_irq_status(u32 status) +{ + if ((status & dispc.irq_error_mask) == 0) + return; + + printk(KERN_DEBUG "DISPC IRQ: 0x%x: ", status); + +#define PIS(x) \ + if (status & DISPC_IRQ_##x) \ + printk(#x " "); + PIS(GFX_FIFO_UNDERFLOW); + PIS(OCP_ERR); + PIS(VID1_FIFO_UNDERFLOW); + PIS(VID2_FIFO_UNDERFLOW); + PIS(SYNC_LOST); + PIS(SYNC_LOST_DIGIT); +#undef PIS + + printk("\n"); +} +#endif + +/* Called from dss.c. Note that we don't touch clocks here, + * but we presume they are on because we got an IRQ. However, + * an irq handler may turn the clocks off, so we may not have + * clock later in the function. */ +void dispc_irq_handler(void) +{ + int i; + u32 irqstatus; + u32 handledirqs = 0; + u32 unhandled_errors; + struct omap_dispc_isr_data *isr_data; + struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS]; + + spin_lock(&dispc.irq_lock); + + irqstatus = dispc_read_reg(DISPC_IRQSTATUS); + +#ifdef DEBUG + if (dss_debug) + print_irq_status(irqstatus); +#endif + /* Ack the interrupt. Do it here before clocks are possibly turned + * off */ + dispc_write_reg(DISPC_IRQSTATUS, irqstatus); + /* flush posted write */ + dispc_read_reg(DISPC_IRQSTATUS); + + /* make a copy and unlock, so that isrs can unregister + * themselves */ + memcpy(registered_isr, dispc.registered_isr, + sizeof(registered_isr)); + + spin_unlock(&dispc.irq_lock); + + for (i = 0; i < DISPC_MAX_NR_ISRS; i++) { + isr_data = ®istered_isr[i]; + + if (!isr_data->isr) + continue; + + if (isr_data->mask & irqstatus) { + isr_data->isr(isr_data->arg, irqstatus); + handledirqs |= isr_data->mask; + } + } + + spin_lock(&dispc.irq_lock); + + unhandled_errors = irqstatus & ~handledirqs & dispc.irq_error_mask; + + if (unhandled_errors) { + dispc.error_irqs |= unhandled_errors; + + dispc.irq_error_mask &= ~unhandled_errors; + _omap_dispc_set_irqs(); + + schedule_work(&dispc.error_work); + } + + spin_unlock(&dispc.irq_lock); +} + +static void dispc_error_worker(struct work_struct *work) +{ + int i; + u32 errors; + unsigned long flags; + + spin_lock_irqsave(&dispc.irq_lock, flags); + errors = dispc.error_irqs; + dispc.error_irqs = 0; + spin_unlock_irqrestore(&dispc.irq_lock, flags); + + if (errors & DISPC_IRQ_GFX_FIFO_UNDERFLOW) { + DSSERR("GFX_FIFO_UNDERFLOW, disabling GFX\n"); + for (i = 0; i < omap_dss_get_num_overlays(); ++i) { + struct omap_overlay *ovl; + ovl = omap_dss_get_overlay(i); + + if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC)) + continue; + + if (ovl->id == 0) { + dispc_enable_plane(ovl->id, 0); + dispc_go(ovl->manager->id); + mdelay(50); + break; + } + } + } + + if (errors & DISPC_IRQ_VID1_FIFO_UNDERFLOW) { + DSSERR("VID1_FIFO_UNDERFLOW, disabling VID1\n"); + for (i = 0; i < omap_dss_get_num_overlays(); ++i) { + struct omap_overlay *ovl; + ovl = omap_dss_get_overlay(i); + + if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC)) + continue; + + if (ovl->id == 1) { + dispc_enable_plane(ovl->id, 0); + dispc_go(ovl->manager->id); + mdelay(50); + break; + } + } + } + + if (errors & DISPC_IRQ_VID2_FIFO_UNDERFLOW) { + DSSERR("VID2_FIFO_UNDERFLOW, disabling VID2\n"); + for (i = 0; i < omap_dss_get_num_overlays(); ++i) { + struct omap_overlay *ovl; + ovl = omap_dss_get_overlay(i); + + if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC)) + continue; + + if (ovl->id == 2) { + dispc_enable_plane(ovl->id, 0); + dispc_go(ovl->manager->id); + mdelay(50); + break; + } + } + } + + if (errors & DISPC_IRQ_SYNC_LOST) { + struct omap_overlay_manager *manager = NULL; + bool enable = false; + + DSSERR("SYNC_LOST, disabling LCD\n"); + + for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) { + struct omap_overlay_manager *mgr; + mgr = omap_dss_get_overlay_manager(i); + + if (mgr->id == OMAP_DSS_CHANNEL_LCD) { + manager = mgr; + enable = mgr->device->state == + OMAP_DSS_DISPLAY_ACTIVE; + mgr->device->disable(mgr->device); + break; + } + } + + if (manager) { + for (i = 0; i < omap_dss_get_num_overlays(); ++i) { + struct omap_overlay *ovl; + ovl = omap_dss_get_overlay(i); + + if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC)) + continue; + + if (ovl->id != 0 && ovl->manager == manager) + dispc_enable_plane(ovl->id, 0); + } + + dispc_go(manager->id); + mdelay(50); + if (enable) + manager->device->enable(manager->device); + } + } + + if (errors & DISPC_IRQ_SYNC_LOST_DIGIT) { + struct omap_overlay_manager *manager = NULL; + bool enable = false; + + DSSERR("SYNC_LOST_DIGIT, disabling TV\n"); + + for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) { + struct omap_overlay_manager *mgr; + mgr = omap_dss_get_overlay_manager(i); + + if (mgr->id == OMAP_DSS_CHANNEL_DIGIT) { + manager = mgr; + enable = mgr->device->state == + OMAP_DSS_DISPLAY_ACTIVE; + mgr->device->disable(mgr->device); + break; + } + } + + if (manager) { + for (i = 0; i < omap_dss_get_num_overlays(); ++i) { + struct omap_overlay *ovl; + ovl = omap_dss_get_overlay(i); + + if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC)) + continue; + + if (ovl->id != 0 && ovl->manager == manager) + dispc_enable_plane(ovl->id, 0); + } + + dispc_go(manager->id); + mdelay(50); + if (enable) + manager->device->enable(manager->device); + } + } + + if (errors & DISPC_IRQ_OCP_ERR) { + DSSERR("OCP_ERR\n"); + for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) { + struct omap_overlay_manager *mgr; + mgr = omap_dss_get_overlay_manager(i); + + if (mgr->caps & OMAP_DSS_OVL_CAP_DISPC) + mgr->device->disable(mgr->device); + } + } + + spin_lock_irqsave(&dispc.irq_lock, flags); + dispc.irq_error_mask |= errors; + _omap_dispc_set_irqs(); + spin_unlock_irqrestore(&dispc.irq_lock, flags); +} + +int omap_dispc_wait_for_irq_timeout(u32 irqmask, unsigned long timeout) +{ + void dispc_irq_wait_handler(void *data, u32 mask) + { + complete((struct completion *)data); + } + + int r; + DECLARE_COMPLETION_ONSTACK(completion); + + r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion, + irqmask); + + if (r) + return r; + + timeout = wait_for_completion_timeout(&completion, timeout); + + omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask); + + if (timeout == 0) + return -ETIMEDOUT; + + if (timeout == -ERESTARTSYS) + return -ERESTARTSYS; + + return 0; +} + +int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask, + unsigned long timeout) +{ + void dispc_irq_wait_handler(void *data, u32 mask) + { + complete((struct completion *)data); + } + + int r; + DECLARE_COMPLETION_ONSTACK(completion); + + r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion, + irqmask); + + if (r) + return r; + + timeout = wait_for_completion_interruptible_timeout(&completion, + timeout); + + omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask); + + if (timeout == 0) + return -ETIMEDOUT; + + if (timeout == -ERESTARTSYS) + return -ERESTARTSYS; + + return 0; +} + +#ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC +void dispc_fake_vsync_irq(void) +{ + u32 irqstatus = DISPC_IRQ_VSYNC; + int i; + + local_irq_disable(); + + for (i = 0; i < DISPC_MAX_NR_ISRS; i++) { + struct omap_dispc_isr_data *isr_data; + isr_data = &dispc.registered_isr[i]; + + if (!isr_data->isr) + continue; + + if (isr_data->mask & irqstatus) + isr_data->isr(isr_data->arg, irqstatus); + } + + local_irq_enable(); +} +#endif + +static void _omap_dispc_initialize_irq(void) +{ + unsigned long flags; + + spin_lock_irqsave(&dispc.irq_lock, flags); + + memset(dispc.registered_isr, 0, sizeof(dispc.registered_isr)); + + dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR; + + /* there's SYNC_LOST_DIGIT waiting after enabling the DSS, + * so clear it */ + dispc_write_reg(DISPC_IRQSTATUS, dispc_read_reg(DISPC_IRQSTATUS)); + + _omap_dispc_set_irqs(); + + spin_unlock_irqrestore(&dispc.irq_lock, flags); +} + +void dispc_enable_sidle(void) +{ + REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */ +} + +void dispc_disable_sidle(void) +{ + REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */ +} + +static void _omap_dispc_initial_config(void) +{ + u32 l; + + l = dispc_read_reg(DISPC_SYSCONFIG); + l = FLD_MOD(l, 2, 13, 12); /* MIDLEMODE: smart standby */ + l = FLD_MOD(l, 2, 4, 3); /* SIDLEMODE: smart idle */ + l = FLD_MOD(l, 1, 2, 2); /* ENWAKEUP */ + l = FLD_MOD(l, 1, 0, 0); /* AUTOIDLE */ + dispc_write_reg(DISPC_SYSCONFIG, l); + + /* FUNCGATED */ + REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9); + + /* L3 firewall setting: enable access to OCM RAM */ + /* XXX this should be somewhere in plat-omap */ + if (cpu_is_omap24xx()) + __raw_writel(0x402000b0, OMAP2_L3_IO_ADDRESS(0x680050a0)); + + _dispc_setup_color_conv_coef(); + + dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY); + + dispc_read_plane_fifo_sizes(); +} + +int dispc_init(void) +{ + u32 rev; + + spin_lock_init(&dispc.irq_lock); + + INIT_WORK(&dispc.error_work, dispc_error_worker); + + dispc.base = ioremap(DISPC_BASE, DISPC_SZ_REGS); + if (!dispc.base) { + DSSERR("can't ioremap DISPC\n"); + return -ENOMEM; + } + + enable_clocks(1); + + _omap_dispc_initial_config(); + + _omap_dispc_initialize_irq(); + + dispc_save_context(); + + rev = dispc_read_reg(DISPC_REVISION); + printk(KERN_INFO "OMAP DISPC rev %d.%d\n", + FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0)); + + enable_clocks(0); + + return 0; +} + +void dispc_exit(void) +{ + iounmap(dispc.base); +} + +int dispc_enable_plane(enum omap_plane plane, bool enable) +{ + DSSDBG("dispc_enable_plane %d, %d\n", plane, enable); + + enable_clocks(1); + _dispc_enable_plane(plane, enable); + enable_clocks(0); + + return 0; +} + +int dispc_setup_plane(enum omap_plane plane, + u32 paddr, u16 screen_width, + u16 pos_x, u16 pos_y, + u16 width, u16 height, + u16 out_width, u16 out_height, + enum omap_color_mode color_mode, + bool ilace, + enum omap_dss_rotation_type rotation_type, + u8 rotation, bool mirror, u8 global_alpha) +{ + int r = 0; + + DSSDBG("dispc_setup_plane %d, pa %x, sw %d, %d,%d, %dx%d -> " + "%dx%d, ilace %d, cmode %x, rot %d, mir %d\n", + plane, paddr, screen_width, pos_x, pos_y, + width, height, + out_width, out_height, + ilace, color_mode, + rotation, mirror); + + enable_clocks(1); + + r = _dispc_setup_plane(plane, + paddr, screen_width, + pos_x, pos_y, + width, height, + out_width, out_height, + color_mode, ilace, + rotation_type, + rotation, mirror, + global_alpha); + + enable_clocks(0); + + return r; +} |