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   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/irqs.h>
  23 #include <mach/mux.h>
  24 #include <mach/cpu.h>
  25 #include <mach/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 #else
  70 #define omap2420_mcbsp_pdata            NULL
  71 #define OMAP2420_MCBSP_PDATA_SZ         0
  72 #endif
  73
  74 #ifdef CONFIG_ARCH_OMAP2430
  75 static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
  76         {
  77                 .phys_base      = OMAP24XX_MCBSP1_BASE,
  78                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
  79                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
  80                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
  81                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
  82                 .ops            = &omap2_mcbsp_ops,
  83         },
  84         {
  85                 .phys_base      = OMAP24XX_MCBSP2_BASE,
  86                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP2_RX,
  87                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP2_TX,
  88                 .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
  89                 .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
  90                 .ops            = &omap2_mcbsp_ops,
  91         },
  92         {
  93                 .phys_base      = OMAP2430_MCBSP3_BASE,
  94                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
  95                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
  96                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
  97                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
  98                 .ops            = &omap2_mcbsp_ops,
  99         },
 100         {
 101                 .phys_base      = OMAP2430_MCBSP4_BASE,
 102                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 103                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 104                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 105                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 106                 .ops            = &omap2_mcbsp_ops,
 107         },
 108         {
 109                 .phys_base      = OMAP2430_MCBSP5_BASE,
 110                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 111                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 112                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 113                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 114                 .ops            = &omap2_mcbsp_ops,
 115         },
 116 };
 117 #define OMAP2430_MCBSP_PDATA_SZ         ARRAY_SIZE(omap2430_mcbsp_pdata)
 118 #else
 119 #define omap2430_mcbsp_pdata            NULL
 120 #define OMAP2430_MCBSP_PDATA_SZ         0
 121 #endif
 122
 123 #ifdef CONFIG_ARCH_OMAP34XX
 124 static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
 125         {
 126                 .phys_base      = OMAP34XX_MCBSP1_BASE,
 127                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP1_RX,
 128                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP1_TX,
 129                 .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
 130                 .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
 131                 .ops            = &omap2_mcbsp_ops,
 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         },
 141         {
 142                 .phys_base      = OMAP34XX_MCBSP3_BASE,
 143                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP3_RX,
 144                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP3_TX,
 145                 .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
 146                 .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
 147                 .ops            = &omap2_mcbsp_ops,
 148         },
 149         {
 150                 .phys_base      = OMAP34XX_MCBSP4_BASE,
 151                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP4_RX,
 152                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP4_TX,
 153                 .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
 154                 .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
 155                 .ops            = &omap2_mcbsp_ops,
 156         },
 157         {
 158                 .phys_base      = OMAP34XX_MCBSP5_BASE,
 159                 .dma_rx_sync    = OMAP24XX_DMA_MCBSP5_RX,
 160                 .dma_tx_sync    = OMAP24XX_DMA_MCBSP5_TX,
 161                 .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
 162                 .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
 163                 .ops            = &omap2_mcbsp_ops,
 164         },
 165 };
 166 #define OMAP34XX_MCBSP_PDATA_SZ         ARRAY_SIZE(omap34xx_mcbsp_pdata)
 167 #else
 168 #define omap34xx_mcbsp_pdata            NULL
 169 #define OMAP34XX_MCBSP_PDATA_SZ         0
 170 #endif
 171
 172 static int __init omap2_mcbsp_init(void)
 173 {
 174         if (cpu_is_omap2420())
 175                 omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
 176         if (cpu_is_omap2430())
 177                 omap_mcbsp_count = OMAP2430_MCBSP_PDATA_SZ;
 178         if (cpu_is_omap34xx())
 179                 omap_mcbsp_count = OMAP34XX_MCBSP_PDATA_SZ;
 180
 181         mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
 182                                                                 GFP_KERNEL);
 183         if (!mcbsp_ptr)
 184                 return -ENOMEM;
 185
 186         if (cpu_is_omap2420())
 187                 omap_mcbsp_register_board_cfg(omap2420_mcbsp_pdata,
 188                                                 OMAP2420_MCBSP_PDATA_SZ);
 189         if (cpu_is_omap2430())
 190                 omap_mcbsp_register_board_cfg(omap2430_mcbsp_pdata,
 191                                                 OMAP2430_MCBSP_PDATA_SZ);
 192         if (cpu_is_omap34xx())
 193                 omap_mcbsp_register_board_cfg(omap34xx_mcbsp_pdata,
 194                                                 OMAP34XX_MCBSP_PDATA_SZ);
 195
 196         return omap_mcbsp_init();
 197 }
 198 arch_initcall(omap2_mcbsp_init);