268 lines
6.4 KiB
C
268 lines
6.4 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* License terms: GNU General Public License (GPL), version 2
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*/
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#include <linux/platform_device.h>
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#include <linux/init.h>
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#include <linux/gpio.h>
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#include <linux/pinctrl/consumer.h>
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#include <plat/gpio-nomadik.h>
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#include <plat/pincfg.h>
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#include <plat/ste_dma40.h>
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#include <mach/devices.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <mach/msp.h>
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#include "ste-dma40-db8500.h"
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#include "board-mop500.h"
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#include "devices-db8500.h"
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#include "pins-db8500.h"
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/* MSP1/3 Tx/Rx usage protection */
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static DEFINE_SPINLOCK(msp_rxtx_lock);
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/* Reference Count */
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static int msp_rxtx_ref;
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/* Pin modes */
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struct pinctrl *msp1_p;
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struct pinctrl_state *msp1_def;
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struct pinctrl_state *msp1_sleep;
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int msp13_i2s_init(void)
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{
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int retval = 0;
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unsigned long flags;
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spin_lock_irqsave(&msp_rxtx_lock, flags);
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if (msp_rxtx_ref == 0 && !(IS_ERR(msp1_p) || IS_ERR(msp1_def))) {
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retval = pinctrl_select_state(msp1_p, msp1_def);
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if (retval)
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pr_err("could not set MSP1 defstate\n");
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}
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if (!retval)
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msp_rxtx_ref++;
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spin_unlock_irqrestore(&msp_rxtx_lock, flags);
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return retval;
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}
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int msp13_i2s_exit(void)
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{
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int retval = 0;
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unsigned long flags;
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spin_lock_irqsave(&msp_rxtx_lock, flags);
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WARN_ON(!msp_rxtx_ref);
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msp_rxtx_ref--;
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if (msp_rxtx_ref == 0 && !(IS_ERR(msp1_p) || IS_ERR(msp1_sleep))) {
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retval = pinctrl_select_state(msp1_p, msp1_sleep);
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if (retval)
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pr_err("could not set MSP1 sleepstate\n");
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}
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spin_unlock_irqrestore(&msp_rxtx_lock, flags);
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return retval;
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}
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static struct stedma40_chan_cfg msp0_dma_rx = {
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.high_priority = true,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.src_dev_type = DB8500_DMA_DEV31_MSP0_RX_SLIM0_CH0_RX,
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.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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static struct stedma40_chan_cfg msp0_dma_tx = {
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.high_priority = true,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.src_dev_type = STEDMA40_DEV_DST_MEMORY,
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.dst_dev_type = DB8500_DMA_DEV31_MSP0_TX_SLIM0_CH0_TX,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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static struct msp_i2s_platform_data msp0_platform_data = {
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.id = MSP_I2S_0,
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.msp_i2s_dma_rx = &msp0_dma_rx,
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.msp_i2s_dma_tx = &msp0_dma_tx,
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};
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static struct stedma40_chan_cfg msp1_dma_rx = {
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.high_priority = true,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.src_dev_type = DB8500_DMA_DEV30_MSP3_RX,
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.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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static struct stedma40_chan_cfg msp1_dma_tx = {
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.high_priority = true,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.src_dev_type = STEDMA40_DEV_DST_MEMORY,
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.dst_dev_type = DB8500_DMA_DEV30_MSP1_TX,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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/* data_width is set during configuration */
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};
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static struct msp_i2s_platform_data msp1_platform_data = {
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.id = MSP_I2S_1,
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.msp_i2s_dma_rx = NULL,
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.msp_i2s_dma_tx = &msp1_dma_tx,
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.msp_i2s_init = msp13_i2s_init,
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.msp_i2s_exit = msp13_i2s_exit,
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};
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static struct stedma40_chan_cfg msp2_dma_rx = {
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.high_priority = true,
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.dir = STEDMA40_PERIPH_TO_MEM,
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.src_dev_type = DB8500_DMA_DEV14_MSP2_RX,
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.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
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/* MSP2 DMA doesn't work with PSIZE == 4 on DB8500v2 */
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.src_info.psize = STEDMA40_PSIZE_LOG_1,
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.dst_info.psize = STEDMA40_PSIZE_LOG_1,
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/* data_width is set during configuration */
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};
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static struct stedma40_chan_cfg msp2_dma_tx = {
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.high_priority = true,
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.dir = STEDMA40_MEM_TO_PERIPH,
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.src_dev_type = STEDMA40_DEV_DST_MEMORY,
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.dst_dev_type = DB8500_DMA_DEV14_MSP2_TX,
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.src_info.psize = STEDMA40_PSIZE_LOG_4,
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.dst_info.psize = STEDMA40_PSIZE_LOG_4,
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.use_fixed_channel = true,
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.phy_channel = 1,
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/* data_width is set during configuration */
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};
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static struct platform_device *db8500_add_msp_i2s(struct device *parent,
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int id,
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resource_size_t base, int irq,
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struct msp_i2s_platform_data *pdata)
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{
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struct platform_device *pdev;
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struct resource res[] = {
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DEFINE_RES_MEM(base, SZ_4K),
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DEFINE_RES_IRQ(irq),
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};
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pr_info("Register platform-device 'ux500-msp-i2s', id %d, irq %d\n",
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id, irq);
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pdev = platform_device_register_resndata(parent, "ux500-msp-i2s", id,
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res, ARRAY_SIZE(res),
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pdata, sizeof(*pdata));
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if (!pdev) {
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pr_err("Failed to register platform-device 'ux500-msp-i2s.%d'!\n",
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id);
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return NULL;
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}
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return pdev;
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}
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/* Platform device for ASoC U8500 machine */
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static struct platform_device snd_soc_u8500 = {
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.name = "snd-soc-u8500",
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.id = 0,
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.dev = {
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.platform_data = NULL,
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},
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};
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/* Platform device for Ux500-PCM */
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static struct platform_device ux500_pcm = {
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.name = "ux500-pcm",
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.id = 0,
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.dev = {
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.platform_data = NULL,
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},
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};
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static struct msp_i2s_platform_data msp2_platform_data = {
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.id = MSP_I2S_2,
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.msp_i2s_dma_rx = &msp2_dma_rx,
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.msp_i2s_dma_tx = &msp2_dma_tx,
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};
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static struct msp_i2s_platform_data msp3_platform_data = {
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.id = MSP_I2S_3,
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.msp_i2s_dma_rx = &msp1_dma_rx,
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.msp_i2s_dma_tx = NULL,
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.msp_i2s_init = msp13_i2s_init,
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.msp_i2s_exit = msp13_i2s_exit,
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};
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int mop500_msp_init(struct device *parent)
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{
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struct platform_device *msp1;
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pr_info("%s: Register platform-device 'snd-soc-u8500'.\n", __func__);
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platform_device_register(&snd_soc_u8500);
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pr_info("Initialize MSP I2S-devices.\n");
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db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0,
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&msp0_platform_data);
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msp1 = db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1,
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&msp1_platform_data);
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db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2,
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&msp2_platform_data);
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db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1,
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&msp3_platform_data);
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/* Get the pinctrl handle for MSP1 */
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if (msp1) {
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msp1_p = pinctrl_get(&msp1->dev);
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if (IS_ERR(msp1_p))
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dev_err(&msp1->dev, "could not get MSP1 pinctrl\n");
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else {
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msp1_def = pinctrl_lookup_state(msp1_p,
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PINCTRL_STATE_DEFAULT);
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if (IS_ERR(msp1_def)) {
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dev_err(&msp1->dev,
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"could not get MSP1 defstate\n");
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}
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msp1_sleep = pinctrl_lookup_state(msp1_p,
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PINCTRL_STATE_SLEEP);
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if (IS_ERR(msp1_sleep))
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dev_err(&msp1->dev,
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"could not get MSP1 idlestate\n");
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}
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}
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pr_info("%s: Register platform-device 'ux500-pcm'\n", __func__);
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platform_device_register(&ux500_pcm);
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return 0;
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}
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