arch/arm/mach-davinci/devices.c

   1 /*
   2  * mach-davinci/devices.c
   3  *
   4  * DaVinci platform device setup/initialization
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/io.h>
  18
  19 #include <asm/mach/map.h>
  20
  21 #include <mach/hardware.h>
  22 #include <mach/i2c.h>
  23 #include <mach/irqs.h>
  24 #include <mach/cputype.h>
  25 #include <mach/mux.h>
  26 #include <mach/edma.h>
  27 #include <mach/mmc.h>
  28 #include <mach/time.h>
  29
  30 #define DAVINCI_I2C_BASE             0x01C21000
  31 #define DAVINCI_MMCSD0_BASE          0x01E10000
  32 #define DM355_MMCSD0_BASE            0x01E11000
  33 #define DM355_MMCSD1_BASE            0x01E00000
  34 #define DM365_MMCSD0_BASE            0x01D11000
  35 #define DM365_MMCSD1_BASE            0x01D00000
  36
  37 static struct resource i2c_resources[] = {
  38         {
  39                 .start          = DAVINCI_I2C_BASE,
  40                 .end            = DAVINCI_I2C_BASE + 0x40,
  41                 .flags          = IORESOURCE_MEM,
  42         },
  43         {
  44                 .start          = IRQ_I2C,
  45                 .flags          = IORESOURCE_IRQ,
  46         },
  47 };
  48
  49 static struct platform_device davinci_i2c_device = {
  50         .name           = "i2c_davinci",
  51         .id             = 1,
  52         .num_resources  = ARRAY_SIZE(i2c_resources),
  53         .resource       = i2c_resources,
  54 };
  55
  56 void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
  57 {
  58         if (cpu_is_davinci_dm644x())
  59                 davinci_cfg_reg(DM644X_I2C);
  60
  61         davinci_i2c_device.dev.platform_data = pdata;
  62         (void) platform_device_register(&davinci_i2c_device);
  63 }
  64
  65 #if     defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
  66
  67 static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
  68
  69 static struct resource mmcsd0_resources[] = {
  70         {
  71                 /* different on dm355 */
  72                 .start = DAVINCI_MMCSD0_BASE,
  73                 .end   = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
  74                 .flags = IORESOURCE_MEM,
  75         },
  76         /* IRQs:  MMC/SD, then SDIO */
  77         {
  78                 .start = IRQ_MMCINT,
  79                 .flags = IORESOURCE_IRQ,
  80         }, {
  81                 /* different on dm355 */
  82                 .start = IRQ_SDIOINT,
  83                 .flags = IORESOURCE_IRQ,
  84         },
  85         /* DMA channels: RX, then TX */
  86         {
  87                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
  88                 .flags = IORESOURCE_DMA,
  89         }, {
  90                 .start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
  91                 .flags = IORESOURCE_DMA,
  92         },
  93 };
  94
  95 static struct platform_device davinci_mmcsd0_device = {
  96         .name = "davinci_mmc",
  97         .id = 0,
  98         .dev = {
  99                 .dma_mask = &mmcsd0_dma_mask,
 100                 .coherent_dma_mask = DMA_BIT_MASK(32),
 101         },
 102         .num_resources = ARRAY_SIZE(mmcsd0_resources),
 103         .resource = mmcsd0_resources,
 104 };
 105
 106 static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
 107
 108 static struct resource mmcsd1_resources[] = {
 109         {
 110                 .start = DM355_MMCSD1_BASE,
 111                 .end   = DM355_MMCSD1_BASE + SZ_4K - 1,
 112                 .flags = IORESOURCE_MEM,
 113         },
 114         /* IRQs:  MMC/SD, then SDIO */
 115         {
 116                 .start = IRQ_DM355_MMCINT1,
 117                 .flags = IORESOURCE_IRQ,
 118         }, {
 119                 .start = IRQ_DM355_SDIOINT1,
 120                 .flags = IORESOURCE_IRQ,
 121         },
 122         /* DMA channels: RX, then TX */
 123         {
 124                 .start = EDMA_CTLR_CHAN(0, 30), /* rx */
 125                 .flags = IORESOURCE_DMA,
 126         }, {
 127                 .start = EDMA_CTLR_CHAN(0, 31), /* tx */
 128                 .flags = IORESOURCE_DMA,
 129         },
 130 };
 131
 132 static struct platform_device davinci_mmcsd1_device = {
 133         .name = "davinci_mmc",
 134         .id = 1,
 135         .dev = {
 136                 .dma_mask = &mmcsd1_dma_mask,
 137                 .coherent_dma_mask = DMA_BIT_MASK(32),
 138         },
 139         .num_resources = ARRAY_SIZE(mmcsd1_resources),
 140         .resource = mmcsd1_resources,
 141 };
 142
 143
 144 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 145 {
 146         struct platform_device  *pdev = NULL;
 147
 148         if (WARN_ON(cpu_is_davinci_dm646x()))
 149                 return;
 150
 151         /* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
 152          * for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
 153          *
 154          * FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
 155          * not handled right here ...
 156          */
 157         switch (module) {
 158         case 1:
 159                 if (cpu_is_davinci_dm355()) {
 160                         /* REVISIT we may not need all these pins if e.g. this
 161                          * is a hard-wired SDIO device...
 162                          */
 163                         davinci_cfg_reg(DM355_SD1_CMD);
 164                         davinci_cfg_reg(DM355_SD1_CLK);
 165                         davinci_cfg_reg(DM355_SD1_DATA0);
 166                         davinci_cfg_reg(DM355_SD1_DATA1);
 167                         davinci_cfg_reg(DM355_SD1_DATA2);
 168                         davinci_cfg_reg(DM355_SD1_DATA3);
 169                 } else if (cpu_is_davinci_dm365()) {
 170                         void __iomem *pupdctl1 =
 171                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE + 0x7c);
 172
 173                         /* Configure pull down control */
 174                         __raw_writel((__raw_readl(pupdctl1) & ~0x400),
 175                                         pupdctl1);
 176
 177                         mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
 178                         mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
 179                                                         SZ_4K - 1;
 180                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT1;
 181                 } else
 182                         break;
 183
 184                 pdev = &davinci_mmcsd1_device;
 185                 break;
 186         case 0:
 187                 if (cpu_is_davinci_dm355()) {
 188                         mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
 189                         mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
 190                         mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
 191
 192                         /* expose all 6 MMC0 signals:  CLK, CMD, DATA[0..3] */
 193                         davinci_cfg_reg(DM355_MMCSD0);
 194
 195                         /* enable RX EDMA */
 196                         davinci_cfg_reg(DM355_EVT26_MMC0_RX);
 197                 } else if (cpu_is_davinci_dm365()) {
 198                         mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
 199                         mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
 200                                                         SZ_4K - 1;
 201                         mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
 202                 } else if (cpu_is_davinci_dm644x()) {
 203                         /* REVISIT: should this be in board-init code? */
 204                         void __iomem *base =
 205                                 IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
 206
 207                         /* Power-on 3.3V IO cells */
 208                         __raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
 209                         /*Set up the pull regiter for MMC */
 210                         davinci_cfg_reg(DM644X_MSTK);
 211                 }
 212
 213                 pdev = &davinci_mmcsd0_device;
 214                 break;
 215         }
 216
 217         if (WARN_ON(!pdev))
 218                 return;
 219
 220         pdev->dev.platform_data = config;
 221         platform_device_register(pdev);
 222 }
 223
 224 #else
 225
 226 void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
 227 {
 228 }
 229
 230 #endif
 231
 232 /*-------------------------------------------------------------------------*/
 233
 234 static struct resource wdt_resources[] = {
 235         {
 236                 .start  = DAVINCI_WDOG_BASE,
 237                 .end    = DAVINCI_WDOG_BASE + SZ_1K - 1,
 238                 .flags  = IORESOURCE_MEM,
 239         },
 240 };
 241
 242 struct platform_device davinci_wdt_device = {
 243         .name           = "watchdog",
 244         .id             = -1,
 245         .num_resources  = ARRAY_SIZE(wdt_resources),
 246         .resource       = wdt_resources,
 247 };
 248
 249 static void davinci_init_wdt(void)
 250 {
 251         platform_device_register(&davinci_wdt_device);
 252 }
 253
 254 /*-------------------------------------------------------------------------*/
 255
 256 struct davinci_timer_instance davinci_timer_instance[2] = {
 257         {
 258                 .base           = IO_ADDRESS(DAVINCI_TIMER0_BASE),
 259                 .bottom_irq     = IRQ_TINT0_TINT12,
 260                 .top_irq        = IRQ_TINT0_TINT34,
 261         },
 262         {
 263                 .base           = IO_ADDRESS(DAVINCI_TIMER1_BASE),
 264                 .bottom_irq     = IRQ_TINT1_TINT12,
 265                 .top_irq        = IRQ_TINT1_TINT34,
 266         },
 267 };
 268
 269 /*-------------------------------------------------------------------------*/
 270
 271 static int __init davinci_init_devices(void)
 272 {
 273         /* please keep these calls, and their implementations above,
 274          * in alphabetical order so they're easier to sort through.
 275          */
 276         davinci_init_wdt();
 277
 278         return 0;
 279 }
 280 arch_initcall(davinci_init_devices);
 281