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kernel-ark/arch/arm/mach-exynos/dma.c
Tushar Behera 7fc7bf084b ARM: EXYNOS: Set the capability of pdm0 and pdm1 as DMA_PRIVATE 
DMA clients pdma0 and pdma1 are internal to the SoC and are used only
by dedicated peripherals. Since they cannot be used for generic
purpose, their capability should be set as DMA_PRIVATE.

CC: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-09-14 08:42:08 +05:30

320 lines
7.3 KiB
C
Raw Blame History

/* 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 <jassi.brar@samsung.com>
*
* 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;
} 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);
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