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mcbsp.c

/*
 * linux/arch/arm/mach-omap2/mcbsp.c
 *
 * Copyright (C) 2008 Instituto Nokia de Tecnologia
 * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Multichannel mode not supported.
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>

#include <mach/irqs.h>
#include <mach/dma.h>
#include <mach/mux.h>
#include <mach/cpu.h>
#include <mach/mcbsp.h>

static void omap2_mcbsp2_mux_setup(void)
{
      omap_cfg_reg(Y15_24XX_MCBSP2_CLKX);
      omap_cfg_reg(R14_24XX_MCBSP2_FSX);
      omap_cfg_reg(W15_24XX_MCBSP2_DR);
      omap_cfg_reg(V15_24XX_MCBSP2_DX);
      omap_cfg_reg(V14_24XX_GPIO117);
      /*
       * TODO: Need to add MUX settings for OMAP 2430 SDP
       */
}

static void omap2_mcbsp_request(unsigned int id)
{
      if (cpu_is_omap2420() && (id == OMAP_MCBSP2))
            omap2_mcbsp2_mux_setup();
}

static struct omap_mcbsp_ops omap2_mcbsp_ops = {
      .request    = omap2_mcbsp_request,
};

#ifdef CONFIG_ARCH_OMAP2420
static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
      {
            .phys_base  = OMAP24XX_MCBSP1_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP1_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP1_TX,
            .rx_irq           = INT_24XX_MCBSP1_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP1_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
      {
            .phys_base  = OMAP24XX_MCBSP2_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP2_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP2_TX,
            .rx_irq           = INT_24XX_MCBSP2_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP2_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
};
#define OMAP2420_MCBSP_PDATA_SZ           ARRAY_SIZE(omap2420_mcbsp_pdata)
#else
#define omap2420_mcbsp_pdata        NULL
#define OMAP2420_MCBSP_PDATA_SZ           0
#endif

#ifdef CONFIG_ARCH_OMAP2430
static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
      {
            .phys_base  = OMAP24XX_MCBSP1_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP1_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP1_TX,
            .rx_irq           = INT_24XX_MCBSP1_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP1_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
      {
            .phys_base  = OMAP24XX_MCBSP2_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP2_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP2_TX,
            .rx_irq           = INT_24XX_MCBSP2_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP2_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
      {
            .phys_base  = OMAP2430_MCBSP3_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP3_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP3_TX,
            .rx_irq           = INT_24XX_MCBSP3_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP3_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
      {
            .phys_base  = OMAP2430_MCBSP4_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP4_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP4_TX,
            .rx_irq           = INT_24XX_MCBSP4_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP4_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
      {
            .phys_base  = OMAP2430_MCBSP5_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP5_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP5_TX,
            .rx_irq           = INT_24XX_MCBSP5_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP5_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
      },
};
#define OMAP2430_MCBSP_PDATA_SZ           ARRAY_SIZE(omap2430_mcbsp_pdata)
#else
#define omap2430_mcbsp_pdata        NULL
#define OMAP2430_MCBSP_PDATA_SZ           0
#endif

#ifdef CONFIG_ARCH_OMAP34XX
static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
      {
            .phys_base  = OMAP34XX_MCBSP1_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP1_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP1_TX,
            .rx_irq           = INT_24XX_MCBSP1_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP1_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
            .buffer_size      = 0x6F,
      },
      {
            .phys_base  = OMAP34XX_MCBSP2_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP2_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP2_TX,
            .rx_irq           = INT_24XX_MCBSP2_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP2_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
            .buffer_size      = 0x3FF,
      },
      {
            .phys_base  = OMAP34XX_MCBSP3_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP3_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP3_TX,
            .rx_irq           = INT_24XX_MCBSP3_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP3_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
            .buffer_size      = 0x6F,
      },
      {
            .phys_base  = OMAP34XX_MCBSP4_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP4_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP4_TX,
            .rx_irq           = INT_24XX_MCBSP4_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP4_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
            .buffer_size      = 0x6F,
      },
      {
            .phys_base  = OMAP34XX_MCBSP5_BASE,
            .dma_rx_sync      = OMAP24XX_DMA_MCBSP5_RX,
            .dma_tx_sync      = OMAP24XX_DMA_MCBSP5_TX,
            .rx_irq           = INT_24XX_MCBSP5_IRQ_RX,
            .tx_irq           = INT_24XX_MCBSP5_IRQ_TX,
            .ops        = &omap2_mcbsp_ops,
            .buffer_size      = 0x6F,
      },
};
#define OMAP34XX_MCBSP_PDATA_SZ           ARRAY_SIZE(omap34xx_mcbsp_pdata)
#else
#define omap34xx_mcbsp_pdata        NULL
#define OMAP34XX_MCBSP_PDATA_SZ           0
#endif

static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = {
      {
            .phys_base      = OMAP44XX_MCBSP1_BASE,
            .dma_rx_sync    = OMAP44XX_DMA_MCBSP1_RX,
            .dma_tx_sync    = OMAP44XX_DMA_MCBSP1_TX,
            .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
            .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
            .ops            = &omap2_mcbsp_ops,
      },
      {
            .phys_base      = OMAP44XX_MCBSP2_BASE,
            .dma_rx_sync    = OMAP44XX_DMA_MCBSP2_RX,
            .dma_tx_sync    = OMAP44XX_DMA_MCBSP2_TX,
            .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
            .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
            .ops            = &omap2_mcbsp_ops,
      },
      {
            .phys_base      = OMAP44XX_MCBSP3_BASE,
            .dma_rx_sync    = OMAP44XX_DMA_MCBSP3_RX,
            .dma_tx_sync    = OMAP44XX_DMA_MCBSP3_TX,
            .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
            .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
            .ops            = &omap2_mcbsp_ops,
      },
      {
            .phys_base      = OMAP44XX_MCBSP4_BASE,
            .dma_rx_sync    = OMAP44XX_DMA_MCBSP4_RX,
            .dma_tx_sync    = OMAP44XX_DMA_MCBSP4_TX,
            .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
            .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
            .ops            = &omap2_mcbsp_ops,
      },
};
#define OMAP44XX_MCBSP_PDATA_SZ           ARRAY_SIZE(omap44xx_mcbsp_pdata)

static int __init omap2_mcbsp_init(void)
{
      if (cpu_is_omap2420())
            omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
      if (cpu_is_omap2430())
            omap_mcbsp_count = OMAP2430_MCBSP_PDATA_SZ;
      if (cpu_is_omap34xx())
            omap_mcbsp_count = OMAP34XX_MCBSP_PDATA_SZ;
      if (cpu_is_omap44xx())
            omap_mcbsp_count = OMAP44XX_MCBSP_PDATA_SZ;

      mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
                                                GFP_KERNEL);
      if (!mcbsp_ptr)
            return -ENOMEM;

      if (cpu_is_omap2420())
            omap_mcbsp_register_board_cfg(omap2420_mcbsp_pdata,
                                    OMAP2420_MCBSP_PDATA_SZ);
      if (cpu_is_omap2430())
            omap_mcbsp_register_board_cfg(omap2430_mcbsp_pdata,
                                    OMAP2430_MCBSP_PDATA_SZ);
      if (cpu_is_omap34xx())
            omap_mcbsp_register_board_cfg(omap34xx_mcbsp_pdata,
                                    OMAP34XX_MCBSP_PDATA_SZ);
      if (cpu_is_omap44xx())
            omap_mcbsp_register_board_cfg(omap44xx_mcbsp_pdata,
                                    OMAP44XX_MCBSP_PDATA_SZ);

      return omap_mcbsp_init();
}
arch_initcall(omap2_mcbsp_init);

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