diff options
Diffstat (limited to 'arch/arm/mach-ux500/board-mop500-msp.c')
| -rw-r--r-- | arch/arm/mach-ux500/board-mop500-msp.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/board-mop500-msp.c b/arch/arm/mach-ux500/board-mop500-msp.c new file mode 100644 index 000000000000..c8f6300cb7d2 --- /dev/null +++ b/arch/arm/mach-ux500/board-mop500-msp.c @@ -0,0 +1,250 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * License terms: GNU General Public License (GPL), version 2 + */ + +#include <linux/platform_device.h> +#include <linux/init.h> +#include <linux/gpio.h> +#include <plat/gpio-nomadik.h> + +#include <plat/pincfg.h> +#include <plat/ste_dma40.h> + +#include <mach/devices.h> +#include <ste-dma40-db8500.h> +#include <mach/hardware.h> +#include <mach/irqs.h> +#include <mach/msp.h> + +#include "board-mop500.h" +#include "devices-db8500.h" +#include "pins-db8500.h" + +/* MSP1/3 Tx/Rx usage protection */ +static DEFINE_SPINLOCK(msp_rxtx_lock); + +/* Reference Count */ +static int msp_rxtx_ref; + +static pin_cfg_t mop500_msp1_pins_init[] = { + GPIO33_MSP1_TXD | PIN_OUTPUT_LOW | PIN_SLPM_WAKEUP_DISABLE, + GPIO34_MSP1_TFS | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE, + GPIO35_MSP1_TCK | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE, + GPIO36_MSP1_RXD | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE, +}; + +static pin_cfg_t mop500_msp1_pins_exit[] = { + GPIO33_MSP1_TXD | PIN_OUTPUT_LOW | PIN_SLPM_WAKEUP_ENABLE, + GPIO34_MSP1_TFS | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE, + GPIO35_MSP1_TCK | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE, + GPIO36_MSP1_RXD | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE, +}; + +int msp13_i2s_init(void) +{ + int retval = 0; + unsigned long flags; + + spin_lock_irqsave(&msp_rxtx_lock, flags); + if (msp_rxtx_ref == 0) + retval = nmk_config_pins( + ARRAY_AND_SIZE(mop500_msp1_pins_init)); + if (!retval) + msp_rxtx_ref++; + spin_unlock_irqrestore(&msp_rxtx_lock, flags); + + return retval; +} + +int msp13_i2s_exit(void) +{ + int retval = 0; + unsigned long flags; + + spin_lock_irqsave(&msp_rxtx_lock, flags); + WARN_ON(!msp_rxtx_ref); + msp_rxtx_ref--; + if (msp_rxtx_ref == 0) + retval = nmk_config_pins_sleep( + ARRAY_AND_SIZE(mop500_msp1_pins_exit)); + spin_unlock_irqrestore(&msp_rxtx_lock, flags); + + return retval; +} + +static struct stedma40_chan_cfg msp0_dma_rx = { + .high_priority = true, + .dir = STEDMA40_PERIPH_TO_MEM, + + .src_dev_type = DB8500_DMA_DEV31_MSP0_RX_SLIM0_CH0_RX, + .dst_dev_type = STEDMA40_DEV_DST_MEMORY, + + .src_info.psize = STEDMA40_PSIZE_LOG_4, + .dst_info.psize = STEDMA40_PSIZE_LOG_4, + + /* data_width is set during configuration */ +}; + +static struct stedma40_chan_cfg msp0_dma_tx = { + .high_priority = true, + .dir = STEDMA40_MEM_TO_PERIPH, + + .src_dev_type = STEDMA40_DEV_DST_MEMORY, + .dst_dev_type = DB8500_DMA_DEV31_MSP0_TX_SLIM0_CH0_TX, + + .src_info.psize = STEDMA40_PSIZE_LOG_4, + .dst_info.psize = STEDMA40_PSIZE_LOG_4, + + /* data_width is set during configuration */ +}; + +static struct msp_i2s_platform_data msp0_platform_data = { + .id = MSP_I2S_0, + .msp_i2s_dma_rx = &msp0_dma_rx, + .msp_i2s_dma_tx = &msp0_dma_tx, +}; + +static struct stedma40_chan_cfg msp1_dma_rx = { + .high_priority = true, + .dir = STEDMA40_PERIPH_TO_MEM, + + .src_dev_type = DB8500_DMA_DEV30_MSP3_RX, + .dst_dev_type = STEDMA40_DEV_DST_MEMORY, + + .src_info.psize = STEDMA40_PSIZE_LOG_4, + .dst_info.psize = STEDMA40_PSIZE_LOG_4, + + /* data_width is set during configuration */ +}; + +static struct stedma40_chan_cfg msp1_dma_tx = { + .high_priority = true, + .dir = STEDMA40_MEM_TO_PERIPH, + + .src_dev_type = STEDMA40_DEV_DST_MEMORY, + .dst_dev_type = DB8500_DMA_DEV30_MSP1_TX, + + .src_info.psize = STEDMA40_PSIZE_LOG_4, + .dst_info.psize = STEDMA40_PSIZE_LOG_4, + + /* data_width is set during configuration */ +}; + +static struct msp_i2s_platform_data msp1_platform_data = { + .id = MSP_I2S_1, + .msp_i2s_dma_rx = NULL, + .msp_i2s_dma_tx = &msp1_dma_tx, + .msp_i2s_init = msp13_i2s_init, + .msp_i2s_exit = msp13_i2s_exit, +}; + +static struct stedma40_chan_cfg msp2_dma_rx = { + .high_priority = true, + .dir = STEDMA40_PERIPH_TO_MEM, + + .src_dev_type = DB8500_DMA_DEV14_MSP2_RX, + .dst_dev_type = STEDMA40_DEV_DST_MEMORY, + + /* MSP2 DMA doesn't work with PSIZE == 4 on DB8500v2 */ + .src_info.psize = STEDMA40_PSIZE_LOG_1, + .dst_info.psize = STEDMA40_PSIZE_LOG_1, + + /* data_width is set during configuration */ +}; + +static struct stedma40_chan_cfg msp2_dma_tx = { + .high_priority = true, + .dir = STEDMA40_MEM_TO_PERIPH, + + .src_dev_type = STEDMA40_DEV_DST_MEMORY, + .dst_dev_type = DB8500_DMA_DEV14_MSP2_TX, + + .src_info.psize = STEDMA40_PSIZE_LOG_4, + .dst_info.psize = STEDMA40_PSIZE_LOG_4, + + .use_fixed_channel = true, + .phy_channel = 1, + + /* data_width is set during configuration */ +}; + +static int db8500_add_msp_i2s(struct device *parent, int id, + resource_size_t base, int irq, + struct msp_i2s_platform_data *pdata) +{ + struct platform_device *pdev; + struct resource res[] = { + DEFINE_RES_MEM(base, SZ_4K), + DEFINE_RES_IRQ(irq), + }; + + pr_info("Register platform-device 'ux500-msp-i2s', id %d, irq %d\n", + id, irq); + pdev = platform_device_register_resndata(parent, "ux500-msp-i2s", id, + res, ARRAY_SIZE(res), + pdata, sizeof(*pdata)); + if (!pdev) { + pr_err("Failed to register platform-device 'ux500-msp-i2s.%d'!\n", + id); + return -EIO; + } + + return 0; +} + +/* Platform device for ASoC U8500 machine */ +static struct platform_device snd_soc_u8500 = { + .name = "snd-soc-u8500", + .id = 0, + .dev = { + .platform_data = NULL, + }, +}; + +/* Platform device for Ux500-PCM */ +static struct platform_device ux500_pcm = { + .name = "ux500-pcm", + .id = 0, + .dev = { + .platform_data = NULL, + }, +}; + +static struct msp_i2s_platform_data msp2_platform_data = { + .id = MSP_I2S_2, + .msp_i2s_dma_rx = &msp2_dma_rx, + .msp_i2s_dma_tx = &msp2_dma_tx, +}; + +static struct msp_i2s_platform_data msp3_platform_data = { + .id = MSP_I2S_3, + .msp_i2s_dma_rx = &msp1_dma_rx, + .msp_i2s_dma_tx = NULL, + .msp_i2s_init = msp13_i2s_init, + .msp_i2s_exit = msp13_i2s_exit, +}; + +int mop500_msp_init(struct device *parent) +{ + int ret; + + pr_info("%s: Register platform-device 'snd-soc-u8500'.\n", __func__); + platform_device_register(&snd_soc_u8500); + + pr_info("Initialize MSP I2S-devices.\n"); + ret = db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, + &msp0_platform_data); + ret |= db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, + &msp1_platform_data); + ret |= db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, + &msp2_platform_data); + ret |= db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, + &msp3_platform_data); + + pr_info("%s: Register platform-device 'ux500-pcm'\n", __func__); + platform_device_register(&ux500_pcm); + + return ret; +} |