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                 .buffer_size    = 0x6F,
 132         },
 133         {
 134                 .phys_base      = OMAP34XX_MCBSP2_BASE,
 135                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
 136                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
 137                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
 138                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
 139                 .ops            = &omap2_mcbsp_ops,
 140                 .buffer_size    = 0x3FF,
 141         },
 142         {
 143                 .phys_base      = OMAP34XX_MCBSP3_BASE,
 144                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
 145                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
 146                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
 147                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
 148                 .ops            = &omap2_mcbsp_ops,
 149                 .buffer_size    = 0x6F,
 150         },
 151         {
 152                 .phys_base      = OMAP34XX_MCBSP4_BASE,
 153                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 154                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 155                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 156                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 157                 .ops            = &omap2_mcbsp_ops,
 158                 .buffer_size    = 0x6F,
 159         },
 160         {
 161                 .phys_base      = OMAP34XX_MCBSP5_BASE,
 162                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 163                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 164                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 165                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 166                 .ops            = &omap2_mcbsp_ops,
 167                 .buffer_size    = 0x6F,
 168         },
 169 };
 170 #define OMAP34XX_MCBSP_PDATA_SZ         ARRAY_SIZE(omap34xx_mcbsp_pdata)
 171 #else
 172 #define omap34xx_mcbsp_pdata            NULL
 173 #define OMAP34XX_MCBSP_PDATA_SZ         0
 174 #endif
 175
 176 static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = {
 177         {
 178                 .phys_base      = OMAP44XX_MCBSP1_BASE,
 179                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP1_RX,
 180                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP1_TX,
 181                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
 182                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
 183                 .ops            = &omap2_mcbsp_ops,
 184         },
 185         {
 186                 .phys_base      = OMAP44XX_MCBSP2_BASE,
 187                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP2_RX,
 188                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP2_TX,
 189                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
 190                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
 191                 .ops            = &omap2_mcbsp_ops,
 192         },
 193         {
 194                 .phys_base      = OMAP44XX_MCBSP3_BASE,
 195                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP3_RX,
 196                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP3_TX,
 197                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
 198                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
 199                 .ops            = &omap2_mcbsp_ops,
 200         },
 201         {
 202                 .phys_base      = OMAP44XX_MCBSP4_BASE,
 203                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP4_RX,
 204                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP4_TX,
 205                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 206                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 207                 .ops            = &omap2_mcbsp_ops,
 208         },
 209 };
 210 #define OMAP44XX_MCBSP_PDATA_SZ         ARRAY_SIZE(omap44xx_mcbsp_pdata)
 211
 212 static int __init omap2_mcbsp_init(void)
 213 {
 214         if (cpu_is_omap2420())
 215                 omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
 216         if (cpu_is_omap2430())
 217                 omap_mcbsp_count = OMAP2430_MCBSP_PDATA_SZ;
 218         if (cpu_is_omap34xx())
 219                 omap_mcbsp_count = OMAP34XX_MCBSP_PDATA_SZ;
 220         if (cpu_is_omap44xx())
 221                 omap_mcbsp_count = OMAP44XX_MCBSP_PDATA_SZ;
 222
 223         mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
 224                                                                 GFP_KERNEL);
 225         if (!mcbsp_ptr)
 226                 return -ENOMEM;
 227
 228         if (cpu_is_omap2420())
 229                 omap_mcbsp_register_board_cfg(omap2420_mcbsp_pdata,
 230                                                 OMAP2420_MCBSP_PDATA_SZ);
 231         if (cpu_is_omap2430())
 232                 omap_mcbsp_register_board_cfg(omap2430_mcbsp_pdata,
 233                                                 OMAP2430_MCBSP_PDATA_SZ);
 234         if (cpu_is_omap34xx())
 235                 omap_mcbsp_register_board_cfg(omap34xx_mcbsp_pdata,
 236                                                 OMAP34XX_MCBSP_PDATA_SZ);
 237         if (cpu_is_omap44xx())
 238                 omap_mcbsp_register_board_cfg(omap44xx_mcbsp_pdata,
 239                                                 OMAP44XX_MCBSP_PDATA_SZ);
 240
 241         return omap_mcbsp_init();
 242 }
 243 arch_initcall(omap2_mcbsp_init);