Logo Search packages:      
Sourcecode: linux version File versions  Download package

dma.c

/* linux/arch/arm/mach-s5p64x0/dma.c
 *
 * Copyright (c) 2010 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/platform_device.h>
#include <linux/dma-mapping.h>

#include <mach/map.h>
#include <mach/irqs.h>
#include <mach/regs-clock.h>

#include <plat/devs.h>
#include <plat/s3c-pl330-pdata.h>

static u64 dma_dmamask = DMA_BIT_MASK(32);

static struct resource s5p64x0_pdma_resource[] = {
      [0] = {
            .start      = S5P64X0_PA_PDMA,
            .end  = S5P64X0_PA_PDMA + SZ_4K,
            .flags      = IORESOURCE_MEM,
      },
      [1] = {
            .start      = IRQ_DMA0,
            .end  = IRQ_DMA0,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct s3c_pl330_platdata s5p6440_pdma_pdata = {
      .peri = {
            [0] = DMACH_UART0_RX,
            [1] = DMACH_UART0_TX,
            [2] = DMACH_UART1_RX,
            [3] = DMACH_UART1_TX,
            [4] = DMACH_UART2_RX,
            [5] = DMACH_UART2_TX,
            [6] = DMACH_UART3_RX,
            [7] = DMACH_UART3_TX,
            [8] = DMACH_MAX,
            [9] = DMACH_MAX,
            [10] = DMACH_PCM0_TX,
            [11] = DMACH_PCM0_RX,
            [12] = DMACH_I2S0_TX,
            [13] = DMACH_I2S0_RX,
            [14] = DMACH_SPI0_TX,
            [15] = DMACH_SPI0_RX,
            [16] = DMACH_MAX,
            [17] = DMACH_MAX,
            [18] = DMACH_MAX,
            [19] = DMACH_MAX,
            [20] = DMACH_SPI1_TX,
            [21] = DMACH_SPI1_RX,
            [22] = DMACH_MAX,
            [23] = DMACH_MAX,
            [24] = DMACH_MAX,
            [25] = DMACH_MAX,
            [26] = DMACH_MAX,
            [27] = DMACH_MAX,
            [28] = DMACH_MAX,
            [29] = DMACH_PWM,
            [30] = DMACH_MAX,
            [31] = DMACH_MAX,
      },
};

static struct s3c_pl330_platdata s5p6450_pdma_pdata = {
      .peri = {
            [0] = DMACH_UART0_RX,
            [1] = DMACH_UART0_TX,
            [2] = DMACH_UART1_RX,
            [3] = DMACH_UART1_TX,
            [4] = DMACH_UART2_RX,
            [5] = DMACH_UART2_TX,
            [6] = DMACH_UART3_RX,
            [7] = DMACH_UART3_TX,
            [8] = DMACH_UART4_RX,
            [9] = DMACH_UART4_TX,
            [10] = DMACH_PCM0_TX,
            [11] = DMACH_PCM0_RX,
            [12] = DMACH_I2S0_TX,
            [13] = DMACH_I2S0_RX,
            [14] = DMACH_SPI0_TX,
            [15] = DMACH_SPI0_RX,
            [16] = DMACH_PCM1_TX,
            [17] = DMACH_PCM1_RX,
            [18] = DMACH_PCM2_TX,
            [19] = DMACH_PCM2_RX,
            [20] = DMACH_SPI1_TX,
            [21] = DMACH_SPI1_RX,
            [22] = DMACH_USI_TX,
            [23] = DMACH_USI_RX,
            [24] = DMACH_MAX,
            [25] = DMACH_I2S1_TX,
            [26] = DMACH_I2S1_RX,
            [27] = DMACH_I2S2_TX,
            [28] = DMACH_I2S2_RX,
            [29] = DMACH_PWM,
            [30] = DMACH_UART5_RX,
            [31] = DMACH_UART5_TX,
      },
};

static struct platform_device s5p64x0_device_pdma = {
      .name       = "s3c-pl330",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(s5p64x0_pdma_resource),
      .resource   = s5p64x0_pdma_resource,
      .dev        = {
            .dma_mask = &dma_dmamask,
            .coherent_dma_mask = DMA_BIT_MASK(32),
      },
};

static int __init s5p64x0_dma_init(void)
{
      unsigned int id;

      id = __raw_readl(S5P64X0_SYS_ID) & 0xFF000;

      if (id == 0x50000)
            s5p64x0_device_pdma.dev.platform_data = &s5p6450_pdma_pdata;
      else
            s5p64x0_device_pdma.dev.platform_data = &s5p6440_pdma_pdata;

      platform_device_register(&s5p64x0_device_pdma);

      return 0;
}
arch_initcall(s5p64x0_dma_init);

Generated by  Doxygen 1.6.0   Back to index