dma.c

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/* linux/arch/arm/mach-exynos4/dma.c
 *
 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
 *      http://www.samsung.com
 *
 * Copyright (C) 2010 Samsung Electronics Co. Ltd.
 *  Jaswinder Singh <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/dma-mapping.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl330.h>
#include <linux/of.h>

#include <asm/irq.h>
#include <plat/devs.h>
#include <plat/irqs.h>
#include <plat/cpu.h>

#include <mach/map.h>
#include <mach/irqs.h>
#include <mach/dma.h>

static u8 exynos4210_pdma0_peri[] = {
    DMACH_PCM0_RX,
    DMACH_PCM0_TX,
    DMACH_PCM2_RX,
    DMACH_PCM2_TX,
    DMACH_MSM_REQ0,
    DMACH_MSM_REQ2,
    DMACH_SPI0_RX,
    DMACH_SPI0_TX,
    DMACH_SPI2_RX,
    DMACH_SPI2_TX,
    DMACH_I2S0S_TX,
    DMACH_I2S0_RX,
    DMACH_I2S0_TX,
    DMACH_I2S2_RX,
    DMACH_I2S2_TX,
    DMACH_UART0_RX,
    DMACH_UART0_TX,
    DMACH_UART2_RX,
    DMACH_UART2_TX,
    DMACH_UART4_RX,
    DMACH_UART4_TX,
    DMACH_SLIMBUS0_RX,
    DMACH_SLIMBUS0_TX,
    DMACH_SLIMBUS2_RX,
    DMACH_SLIMBUS2_TX,
    DMACH_SLIMBUS4_RX,
    DMACH_SLIMBUS4_TX,
    DMACH_AC97_MICIN,
    DMACH_AC97_PCMIN,
    DMACH_AC97_PCMOUT,
};

static u8 exynos4212_pdma0_peri[] = {
    DMACH_PCM0_RX,
    DMACH_PCM0_TX,
    DMACH_PCM2_RX,
    DMACH_PCM2_TX,
    DMACH_MIPI_HSI0,
    DMACH_MIPI_HSI1,
    DMACH_SPI0_RX,
    DMACH_SPI0_TX,
    DMACH_SPI2_RX,
    DMACH_SPI2_TX,
    DMACH_I2S0S_TX,
    DMACH_I2S0_RX,
    DMACH_I2S0_TX,
    DMACH_I2S2_RX,
    DMACH_I2S2_TX,
    DMACH_UART0_RX,
    DMACH_UART0_TX,
    DMACH_UART2_RX,
    DMACH_UART2_TX,
    DMACH_UART4_RX,
    DMACH_UART4_TX,
    DMACH_SLIMBUS0_RX,
    DMACH_SLIMBUS0_TX,
    DMACH_SLIMBUS2_RX,
    DMACH_SLIMBUS2_TX,
    DMACH_SLIMBUS4_RX,
    DMACH_SLIMBUS4_TX,
    DMACH_AC97_MICIN,
    DMACH_AC97_PCMIN,
    DMACH_AC97_PCMOUT,
    DMACH_MIPI_HSI4,
    DMACH_MIPI_HSI5,
};

static u8 exynos5250_pdma0_peri[] = {
    DMACH_PCM0_RX,
    DMACH_PCM0_TX,
    DMACH_PCM2_RX,
    DMACH_PCM2_TX,
    DMACH_SPI0_RX,
    DMACH_SPI0_TX,
    DMACH_SPI2_RX,
    DMACH_SPI2_TX,
    DMACH_I2S0S_TX,
    DMACH_I2S0_RX,
    DMACH_I2S0_TX,
    DMACH_I2S2_RX,
    DMACH_I2S2_TX,
    DMACH_UART0_RX,
    DMACH_UART0_TX,
    DMACH_UART2_RX,
    DMACH_UART2_TX,
    DMACH_UART4_RX,
    DMACH_UART4_TX,
    DMACH_SLIMBUS0_RX,
    DMACH_SLIMBUS0_TX,
    DMACH_SLIMBUS2_RX,
    DMACH_SLIMBUS2_TX,
    DMACH_SLIMBUS4_RX,
    DMACH_SLIMBUS4_TX,
    DMACH_AC97_MICIN,
    DMACH_AC97_PCMIN,
    DMACH_AC97_PCMOUT,
    DMACH_MIPI_HSI0,
    DMACH_MIPI_HSI2,
    DMACH_MIPI_HSI4,
    DMACH_MIPI_HSI6,
};

static struct dma_pl330_platdata exynos_pdma0_pdata;

static AMBA_AHB_DEVICE(exynos_pdma0, "dma-pl330.0", 0x00041330,
    EXYNOS4_PA_PDMA0, {EXYNOS4_IRQ_PDMA0}, &exynos_pdma0_pdata);

static u8 exynos4210_pdma1_peri[] = {
    DMACH_PCM0_RX,
    DMACH_PCM0_TX,
    DMACH_PCM1_RX,
    DMACH_PCM1_TX,
    DMACH_MSM_REQ1,
    DMACH_MSM_REQ3,
    DMACH_SPI1_RX,
    DMACH_SPI1_TX,
    DMACH_I2S0S_TX,
    DMACH_I2S0_RX,
    DMACH_I2S0_TX,
    DMACH_I2S1_RX,
    DMACH_I2S1_TX,
    DMACH_UART0_RX,
    DMACH_UART0_TX,
    DMACH_UART1_RX,
    DMACH_UART1_TX,
    DMACH_UART3_RX,
    DMACH_UART3_TX,
    DMACH_SLIMBUS1_RX,
    DMACH_SLIMBUS1_TX,
    DMACH_SLIMBUS3_RX,
    DMACH_SLIMBUS3_TX,
    DMACH_SLIMBUS5_RX,
    DMACH_SLIMBUS5_TX,
};

static u8 exynos4212_pdma1_peri[] = {
    DMACH_PCM0_RX,
    DMACH_PCM0_TX,
    DMACH_PCM1_RX,
    DMACH_PCM1_TX,
    DMACH_MIPI_HSI2,
    DMACH_MIPI_HSI3,
    DMACH_SPI1_RX,
    DMACH_SPI1_TX,
    DMACH_I2S0S_TX,
    DMACH_I2S0_RX,
    DMACH_I2S0_TX,
    DMACH_I2S1_RX,
    DMACH_I2S1_TX,
    DMACH_UART0_RX,
    DMACH_UART0_TX,
    DMACH_UART1_RX,
    DMACH_UART1_TX,
    DMACH_UART3_RX,
    DMACH_UART3_TX,
    DMACH_SLIMBUS1_RX,
    DMACH_SLIMBUS1_TX,
    DMACH_SLIMBUS3_RX,
    DMACH_SLIMBUS3_TX,
    DMACH_SLIMBUS5_RX,
    DMACH_SLIMBUS5_TX,
    DMACH_SLIMBUS0AUX_RX,
    DMACH_SLIMBUS0AUX_TX,
    DMACH_SPDIF,
    DMACH_MIPI_HSI6,
    DMACH_MIPI_HSI7,
};

static u8 exynos5250_pdma1_peri[] = {
    DMACH_PCM0_RX,
    DMACH_PCM0_TX,
    DMACH_PCM1_RX,
    DMACH_PCM1_TX,
    DMACH_SPI1_RX,
    DMACH_SPI1_TX,
    DMACH_PWM,
    DMACH_SPDIF,
    DMACH_I2S0S_TX,
    DMACH_I2S0_RX,
    DMACH_I2S0_TX,
    DMACH_I2S1_RX,
    DMACH_I2S1_TX,
    DMACH_UART0_RX,
    DMACH_UART0_TX,
    DMACH_UART1_RX,
    DMACH_UART1_TX,
    DMACH_UART3_RX,
    DMACH_UART3_TX,
    DMACH_SLIMBUS1_RX,
    DMACH_SLIMBUS1_TX,
    DMACH_SLIMBUS3_RX,
    DMACH_SLIMBUS3_TX,
    DMACH_SLIMBUS5_RX,
    DMACH_SLIMBUS5_TX,
    DMACH_SLIMBUS0AUX_RX,
    DMACH_SLIMBUS0AUX_TX,
    DMACH_DISP1,
    DMACH_MIPI_HSI1,
    DMACH_MIPI_HSI3,
    DMACH_MIPI_HSI5,
    DMACH_MIPI_HSI7,
};

static struct dma_pl330_platdata exynos_pdma1_pdata;

static AMBA_AHB_DEVICE(exynos_pdma1,  "dma-pl330.1", 0x00041330,
    EXYNOS4_PA_PDMA1, {EXYNOS4_IRQ_PDMA1}, &exynos_pdma1_pdata);

static u8 mdma_peri[] = {
    DMACH_MTOM_0,
    DMACH_MTOM_1,
    DMACH_MTOM_2,
    DMACH_MTOM_3,
    DMACH_MTOM_4,
    DMACH_MTOM_5,
    DMACH_MTOM_6,
    DMACH_MTOM_7,
};

static struct dma_pl330_platdata exynos_mdma1_pdata = {
    .nr_valid_peri = ARRAY_SIZE(mdma_peri),
    .peri_id = mdma_peri,
};

static AMBA_AHB_DEVICE(exynos_mdma1,  "dma-pl330.2", 0x00041330,
    EXYNOS4_PA_MDMA1, {EXYNOS4_IRQ_MDMA1}, &exynos_mdma1_pdata);

static int __init exynos_dma_init(void)
{
    if (of_have_populated_dt())
        return 0;

    if (soc_is_exynos4210()) {
        exynos_pdma0_pdata.nr_valid_peri =
            ARRAY_SIZE(exynos4210_pdma0_peri);
        exynos_pdma0_pdata.peri_id = exynos4210_pdma0_peri;
        exynos_pdma1_pdata.nr_valid_peri =
            ARRAY_SIZE(exynos4210_pdma1_peri);
        exynos_pdma1_pdata.peri_id = exynos4210_pdma1_peri;

        if (samsung_rev() == EXYNOS4210_REV_0)
            exynos_mdma1_device.res.start = EXYNOS4_PA_S_MDMA1;
    } else if (soc_is_exynos4212() || soc_is_exynos4412()) {
        exynos_pdma0_pdata.nr_valid_peri =
            ARRAY_SIZE(exynos4212_pdma0_peri);
        exynos_pdma0_pdata.peri_id = exynos4212_pdma0_peri;
        exynos_pdma1_pdata.nr_valid_peri =
            ARRAY_SIZE(exynos4212_pdma1_peri);
        exynos_pdma1_pdata.peri_id = exynos4212_pdma1_peri;
    } else if (soc_is_exynos5250()) {
        exynos_pdma0_pdata.nr_valid_peri =
            ARRAY_SIZE(exynos5250_pdma0_peri);
        exynos_pdma0_pdata.peri_id = exynos5250_pdma0_peri;
        exynos_pdma1_pdata.nr_valid_peri =
            ARRAY_SIZE(exynos5250_pdma1_peri);
        exynos_pdma1_pdata.peri_id = exynos5250_pdma1_peri;

        exynos_pdma0_device.res.start = EXYNOS5_PA_PDMA0;
        exynos_pdma0_device.res.end = EXYNOS5_PA_PDMA0 + SZ_4K;
        exynos_pdma0_device.irq[0] = EXYNOS5_IRQ_PDMA0;
        exynos_pdma1_device.res.start = EXYNOS5_PA_PDMA1;
        exynos_pdma1_device.res.end = EXYNOS5_PA_PDMA1 + SZ_4K;
        exynos_pdma0_device.irq[0] = EXYNOS5_IRQ_PDMA1;
        exynos_mdma1_device.res.start = EXYNOS5_PA_MDMA1;
        exynos_mdma1_device.res.end = EXYNOS5_PA_MDMA1 + SZ_4K;
        exynos_pdma0_device.irq[0] = EXYNOS5_IRQ_MDMA1;
    }

    dma_cap_set(DMA_SLAVE, exynos_pdma0_pdata.cap_mask);
    dma_cap_set(DMA_CYCLIC, exynos_pdma0_pdata.cap_mask);
    dma_cap_set(DMA_PRIVATE, exynos_pdma0_pdata.cap_mask);
    amba_device_register(&exynos_pdma0_device, &iomem_resource);

    dma_cap_set(DMA_SLAVE, exynos_pdma1_pdata.cap_mask);
    dma_cap_set(DMA_CYCLIC, exynos_pdma1_pdata.cap_mask);
    dma_cap_set(DMA_PRIVATE, exynos_pdma1_pdata.cap_mask);
    amba_device_register(&exynos_pdma1_device, &iomem_resource);

    dma_cap_set(DMA_MEMCPY, exynos_mdma1_pdata.cap_mask);
    amba_device_register(&exynos_mdma1_device, &iomem_resource);

    return 0;
}
arch_initcall(exynos_dma_init);