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 #include <linux/slab.h>
  20
  21 #include <mach/irqs.h>
  22 #include <plat/dma.h>
  23 #include <plat/mux.h>
  24 #include <plat/cpu.h>
  25 #include <plat/mcbsp.h>
  26
  27 static void omap2_mcbsp2_mux_setup(void)
  28 {
  29         omap_cfg_reg(Y15_24XX_MCBSP2_CLKX);
  30         omap_cfg_reg(R14_24XX_MCBSP2_FSX);
  31         omap_cfg_reg(W15_24XX_MCBSP2_DR);
  32         omap_cfg_reg(V15_24XX_MCBSP2_DX);
  33         omap_cfg_reg(V14_24XX_GPIO117);
  34         /*
  35          * TODO: Need to add MUX settings for OMAP 2430 SDP
  36          */
  37 }
  38
  39 static void omap2_mcbsp_request(unsigned int id)
  40 {
  41         if (cpu_is_omap2420() && (id == OMAP_MCBSP2))
  42                 omap2_mcbsp2_mux_setup();
  43 }
  44
  45 static struct omap_mcbsp_ops omap2_mcbsp_ops = {
  46         .request        = omap2_mcbsp_request,
  47 };
  48
  49 #ifdef CONFIG_ARCH_OMAP2420
  50 static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
  51         {
  52                 .phys_base      = OMAP24XX_MCBSP1_BASE,
  53                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
  54                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
  55                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
  56                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
  57                 .ops            = &omap2_mcbsp_ops,
  58         },
  59         {
  60                 .phys_base      = OMAP24XX_MCBSP2_BASE,
  61                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
  62                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
  63                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
  64                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
  65                 .ops            = &omap2_mcbsp_ops,
  66         },
  67 };
  68 #define OMAP2420_MCBSP_PDATA_SZ         ARRAY_SIZE(omap2420_mcbsp_pdata)
  69 #define OMAP2420_MCBSP_REG_NUM          (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
  70 #else
  71 #define omap2420_mcbsp_pdata            NULL
  72 #define OMAP2420_MCBSP_PDATA_SZ         0
  73 #define OMAP2420_MCBSP_REG_NUM          0
  74 #endif
  75
  76 #ifdef CONFIG_ARCH_OMAP2430
  77 static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
  78         {
  79                 .phys_base      = OMAP24XX_MCBSP1_BASE,
  80                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
  81                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
  82                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
  83                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
  84                 .ops            = &omap2_mcbsp_ops,
  85         },
  86         {
  87                 .phys_base      = OMAP24XX_MCBSP2_BASE,
  88                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
  89                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
  90                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
  91                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
  92                 .ops            = &omap2_mcbsp_ops,
  93         },
  94         {
  95                 .phys_base      = OMAP2430_MCBSP3_BASE,
  96                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
  97                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
  98                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
  99                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
 100                 .ops            = &omap2_mcbsp_ops,
 101         },
 102         {
 103                 .phys_base      = OMAP2430_MCBSP4_BASE,
 104                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 105                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 106                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 107                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 108                 .ops            = &omap2_mcbsp_ops,
 109         },
 110         {
 111                 .phys_base      = OMAP2430_MCBSP5_BASE,
 112                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 113                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 114                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 115                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 116                 .ops            = &omap2_mcbsp_ops,
 117         },
 118 };
 119 #define OMAP2430_MCBSP_PDATA_SZ         ARRAY_SIZE(omap2430_mcbsp_pdata)
 120 #define OMAP2430_MCBSP_REG_NUM          (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
 121 #else
 122 #define omap2430_mcbsp_pdata            NULL
 123 #define OMAP2430_MCBSP_PDATA_SZ         0
 124 #define OMAP2430_MCBSP_REG_NUM          0
 125 #endif
 126
 127 #ifdef CONFIG_ARCH_OMAP3
 128 static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
 129         {
 130                 .phys_base      = OMAP34XX_MCBSP1_BASE,
 131                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
 132                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
 133                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
 134                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
 135                 .ops            = &omap2_mcbsp_ops,
 136                 .buffer_size    = 0x6F,
 137         },
 138         {
 139                 .phys_base      = OMAP34XX_MCBSP2_BASE,
 140                 .phys_base_st   = OMAP34XX_MCBSP2_ST_BASE,
 141                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
 142                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
 143                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
 144                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
 145                 .ops            = &omap2_mcbsp_ops,
 146                 .buffer_size    = 0x3FF,
 147         },
 148         {
 149                 .phys_base      = OMAP34XX_MCBSP3_BASE,
 150                 .phys_base_st   = OMAP34XX_MCBSP3_ST_BASE,
 151                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
 152                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
 153                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
 154                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
 155                 .ops            = &omap2_mcbsp_ops,
 156                 .buffer_size    = 0x6F,
 157         },
 158         {
 159                 .phys_base      = OMAP34XX_MCBSP4_BASE,
 160                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 161                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 162                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 163                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 164                 .ops            = &omap2_mcbsp_ops,
 165                 .buffer_size    = 0x6F,
 166         },
 167         {
 168                 .phys_base      = OMAP34XX_MCBSP5_BASE,
 169                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 170                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 171                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 172                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 173                 .ops            = &omap2_mcbsp_ops,
 174                 .buffer_size    = 0x6F,
 175         },
 176 };
 177 #define OMAP34XX_MCBSP_PDATA_SZ         ARRAY_SIZE(omap34xx_mcbsp_pdata)
 178 #define OMAP34XX_MCBSP_REG_NUM          (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
 179 #else
 180 #define omap34xx_mcbsp_pdata            NULL
 181 #define OMAP34XX_MCBSP_PDATA_SZ         0
 182 #define OMAP34XX_MCBSP_REG_NUM          0
 183 #endif
 184
 185 static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = {
 186         {
 187                 .phys_base      = OMAP44XX_MCBSP1_BASE,
 188                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP1_RX,
 189                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP1_TX,
 190                 .tx_irq         = OMAP44XX_IRQ_MCBSP1,
 191                 .ops            = &omap2_mcbsp_ops,
 192         },
 193         {
 194                 .phys_base      = OMAP44XX_MCBSP2_BASE,
 195                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP2_RX,
 196                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP2_TX,
 197                 .tx_irq         = OMAP44XX_IRQ_MCBSP2,
 198                 .ops            = &omap2_mcbsp_ops,
 199         },
 200         {
 201                 .phys_base      = OMAP44XX_MCBSP3_BASE,
 202                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP3_RX,
 203                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP3_TX,
 204                 .tx_irq         = OMAP44XX_IRQ_MCBSP3,
 205                 .ops            = &omap2_mcbsp_ops,
 206         },
 207         {
 208                 .phys_base      = OMAP44XX_MCBSP4_BASE,
 209                 .dma_rx_sync    = OMAP44XX_DMA_MCBSP4_RX,
 210                 .dma_tx_sync    = OMAP44XX_DMA_MCBSP4_TX,
 211                 .tx_irq         = OMAP44XX_IRQ_MCBSP4,
 212                 .ops            = &omap2_mcbsp_ops,
 213         },
 214 };
 215 #define OMAP44XX_MCBSP_PDATA_SZ         ARRAY_SIZE(omap44xx_mcbsp_pdata)
 216 #define OMAP44XX_MCBSP_REG_NUM          (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
 217
 218 static int __init omap2_mcbsp_init(void)
 219 {
 220         if (cpu_is_omap2420()) {
 221                 omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
 222                 omap_mcbsp_cache_size = OMAP2420_MCBSP_REG_NUM * sizeof(u16);
 223         } else if (cpu_is_omap2430()) {
 224                 omap_mcbsp_count = OMAP2430_MCBSP_PDATA_SZ;
 225                 omap_mcbsp_cache_size = OMAP2430_MCBSP_REG_NUM * sizeof(u32);
 226         } else if (cpu_is_omap34xx()) {
 227                 omap_mcbsp_count = OMAP34XX_MCBSP_PDATA_SZ;
 228                 omap_mcbsp_cache_size = OMAP34XX_MCBSP_REG_NUM * sizeof(u32);
 229         } else if (cpu_is_omap44xx()) {
 230                 omap_mcbsp_count = OMAP44XX_MCBSP_PDATA_SZ;
 231                 omap_mcbsp_cache_size = OMAP44XX_MCBSP_REG_NUM * sizeof(u32);
 232         }
 233
 234         mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
 235                                                                 GFP_KERNEL);
 236         if (!mcbsp_ptr)
 237                 return -ENOMEM;
 238
 239         if (cpu_is_omap2420())
 240                 omap_mcbsp_register_board_cfg(omap2420_mcbsp_pdata,
 241                                                 OMAP2420_MCBSP_PDATA_SZ);
 242         if (cpu_is_omap2430())
 243                 omap_mcbsp_register_board_cfg(omap2430_mcbsp_pdata,
 244                                                 OMAP2430_MCBSP_PDATA_SZ);
 245         if (cpu_is_omap34xx())
 246                 omap_mcbsp_register_board_cfg(omap34xx_mcbsp_pdata,
 247                                                 OMAP34XX_MCBSP_PDATA_SZ);
 248         if (cpu_is_omap44xx())
 249                 omap_mcbsp_register_board_cfg(omap44xx_mcbsp_pdata,
 250                                                 OMAP44XX_MCBSP_PDATA_SZ);
 251
 252         return omap_mcbsp_init();
 253 }
 254 arch_initcall(omap2_mcbsp_init);