board-mop500-audio.c

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/*
 * 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 <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/msp.h>

#include "ste-dma40-db8500.h"
#include "board-mop500.h"
#include "devices-db8500.h"
#include "pins-db8500.h"

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 */
};

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 */
};

struct msp_i2s_platform_data msp1_platform_data = {
    .id = MSP_I2S_1,
    .msp_i2s_dma_rx = NULL,
    .msp_i2s_dma_tx = &msp1_dma_tx,
};

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 struct platform_device *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 NULL;
    }

    return pdev;
}

/* Platform device for ASoC MOP500 machine */
static struct platform_device snd_soc_mop500 = {
    .name = "snd-soc-mop500",
    .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,
        },
};

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,
};

struct msp_i2s_platform_data msp3_platform_data = {
    .id     = MSP_I2S_3,
    .msp_i2s_dma_rx = &msp1_dma_rx,
    .msp_i2s_dma_tx = NULL,
};

void mop500_audio_init(struct device *parent)
{
    pr_info("%s: Register platform-device 'snd-soc-mop500'.\n", __func__);
    platform_device_register(&snd_soc_mop500);

    pr_info("Initialize MSP I2S-devices.\n");
    db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0,
               &msp0_platform_data);
    db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1,
               &msp1_platform_data);
    db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2,
               &msp2_platform_data);
    db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1,
               &msp3_platform_data);
}

/* Due for removal once the MSP driver has been fully DT:ed. */
void mop500_of_audio_init(struct device *parent)
{
    pr_info("%s: Register platform-device 'ux500-pcm'\n", __func__);
    platform_device_register(&ux500_pcm);
}