arch/arm/mach-omap2/mcbsp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/mcbsp.c
   3  *
   4  * Copyright (C) 2008 Instituto Nokia de Tecnologia
   5  * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * Multichannel mode not supported.
  12  */
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include <linux/clk.h>
  16 #include <linux/err.h>
  17 #include <linux/io.h>
  18 #include <linux/platform_device.h>
  19
  20 #include <mach/irqs.h>
  21 #include <mach/dma.h>
  22 #include <mach/mux.h>
  23 #include <mach/cpu.h>
  24 #include <mach/mcbsp.h>
  25
  26 static void omap2_mcbsp2_mux_setup(void)
  27 {
  28         omap_cfg_reg(Y15_24XX_MCBSP2_CLKX);
  29         omap_cfg_reg(R14_24XX_MCBSP2_FSX);
  30         omap_cfg_reg(W15_24XX_MCBSP2_DR);
  31         omap_cfg_reg(V15_24XX_MCBSP2_DX);
  32         omap_cfg_reg(V14_24XX_GPIO117);
  33         /*
  34          * TODO: Need to add MUX settings for OMAP 2430 SDP
  35          */
  36 }
  37
  38 static void omap2_mcbsp_request(unsigned int id)
  39 {
  40         if (cpu_is_omap2420() && (id == OMAP_MCBSP2))
  41                 omap2_mcbsp2_mux_setup();
  42 }
  43
  44 static struct omap_mcbsp_ops omap2_mcbsp_ops = {
  45         .request        = omap2_mcbsp_request,
  46 };
  47
  48 #ifdef CONFIG_ARCH_OMAP2420
  49 static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
  50         {
  51                 .phys_base      = OMAP24XX_MCBSP1_BASE,
  52                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
  53                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
  54                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
  55                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
  56                 .ops            = &omap2_mcbsp_ops,
  57         },
  58         {
  59                 .phys_base      = OMAP24XX_MCBSP2_BASE,
  60                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
  61                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
  62                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
  63                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
  64                 .ops            = &omap2_mcbsp_ops,
  65         },
  66 };
  67 #define OMAP2420_MCBSP_PDATA_SZ         ARRAY_SIZE(omap2420_mcbsp_pdata)
  68 #else
  69 #define omap2420_mcbsp_pdata            NULL
  70 #define OMAP2420_MCBSP_PDATA_SZ         0
  71 #endif
  72
  73 #ifdef CONFIG_ARCH_OMAP2430
  74 static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
  75         {
  76                 .phys_base      = OMAP24XX_MCBSP1_BASE,
  77                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
  78                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
  79                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
  80                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
  81                 .ops            = &omap2_mcbsp_ops,
  82         },
  83         {
  84                 .phys_base      = OMAP24XX_MCBSP2_BASE,
  85                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
  86                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
  87                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
  88                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
  89                 .ops            = &omap2_mcbsp_ops,
  90         },
  91         {
  92                 .phys_base      = OMAP2430_MCBSP3_BASE,
  93                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
  94                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
  95                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
  96                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
  97                 .ops            = &omap2_mcbsp_ops,
  98         },
  99         {
 100                 .phys_base      = OMAP2430_MCBSP4_BASE,
 101                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 102                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 103                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 104                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 105                 .ops            = &omap2_mcbsp_ops,
 106         },
 107         {
 108                 .phys_base      = OMAP2430_MCBSP5_BASE,
 109                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 110                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 111                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 112                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 113                 .ops            = &omap2_mcbsp_ops,
 114         },
 115 };
 116 #define OMAP2430_MCBSP_PDATA_SZ         ARRAY_SIZE(omap2430_mcbsp_pdata)
 117 #else
 118 #define omap2430_mcbsp_pdata            NULL
 119 #define OMAP2430_MCBSP_PDATA_SZ         0
 120 #endif
 121
 122 #ifdef CONFIG_ARCH_OMAP34XX
 123 static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
 124         {
 125                 .phys_base      = OMAP34XX_MCBSP1_BASE,
 126                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
 127                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
 128                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
 129                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
 130                 .ops            = &omap2_mcbsp_ops,
 131         },
 132         {
 133                 .phys_base      = OMAP34XX_MCBSP2_BASE,
 134                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
 135                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
 136                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
 137                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
 138                 .ops            = &omap2_mcbsp_ops,
 139         },
 140         {
 141                 .phys_base      = OMAP34XX_MCBSP3_BASE,
 142                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
 143                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
 144                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
 145                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
 146                 .ops            = &omap2_mcbsp_ops,
 147         },
 148         {
 149                 .phys_base      = OMAP34XX_MCBSP4_BASE,
 150                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 151                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 152                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 153                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 154                 .ops            = &omap2_mcbsp_ops,
 155         },
 156         {
 157                 .phys_base      = OMAP34XX_MCBSP5_BASE,
 158                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 159                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 160                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 161                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 162                 .ops            = &omap2_mcbsp_ops,
 163         },
 164 };
 165 #define OMAP34XX_MCBSP_PDATA_SZ         ARRAY_SIZE(omap34xx_mcbsp_pdata)
 166 #else
 167 #define omap34xx_mcbsp_pdata            NULL
 168 #define OMAP34XX_MCBSP_PDATA_SZ         0
 169 #endif
 170
 171 static int __init omap2_mcbsp_init(void)
 172 {
 173         if (cpu_is_omap2420())
 174                 omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
 175         if (cpu_is_omap2430())
 176                 omap_mcbsp_count = OMAP2430_MCBSP_PDATA_SZ;
 177         if (cpu_is_omap34xx())
 178                 omap_mcbsp_count = OMAP34XX_MCBSP_PDATA_SZ;
 179
 180         mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
 181                                                                 GFP_KERNEL);
 182         if (!mcbsp_ptr)
 183                 return -ENOMEM;
 184
 185         if (cpu_is_omap2420())
 186                 omap_mcbsp_register_board_cfg(omap2420_mcbsp_pdata,
 187                                                 OMAP2420_MCBSP_PDATA_SZ);
 188         if (cpu_is_omap2430())
 189                 omap_mcbsp_register_board_cfg(omap2430_mcbsp_pdata,
 190                                                 OMAP2430_MCBSP_PDATA_SZ);
 191         if (cpu_is_omap34xx())
 192                 omap_mcbsp_register_board_cfg(omap34xx_mcbsp_pdata,
 193                                                 OMAP34XX_MCBSP_PDATA_SZ);
 194
 195         return omap_mcbsp_init();
 196 }
 197 arch_initcall(omap2_mcbsp_init);