arch/arm/mach-mx2/pcm970-baseboard.c

   1 /*
   2  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  16  * MA 02110-1301, USA.
  17  */
  18
  19 #include <linux/gpio.h>
  20 #include <linux/irq.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/can/platform/sja1000.h>
  23
  24 #include <asm/mach/arch.h>
  25
  26 #include <mach/common.h>
  27 #include <mach/iomux.h>
  28 #include <mach/imxfb.h>
  29 #include <mach/hardware.h>
  30 #include <mach/mmc.h>
  31
  32 #include "devices.h"
  33
  34 static int pcm970_pins[] = {
  35         /* SDHC */
  36         PB4_PF_SD2_D0,
  37         PB5_PF_SD2_D1,
  38         PB6_PF_SD2_D2,
  39         PB7_PF_SD2_D3,
  40         PB8_PF_SD2_CMD,
  41         PB9_PF_SD2_CLK,
  42         GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN, /* card detect */
  43         /* display */
  44         PA5_PF_LSCLK,
  45         PA6_PF_LD0,
  46         PA7_PF_LD1,
  47         PA8_PF_LD2,
  48         PA9_PF_LD3,
  49         PA10_PF_LD4,
  50         PA11_PF_LD5,
  51         PA12_PF_LD6,
  52         PA13_PF_LD7,
  53         PA14_PF_LD8,
  54         PA15_PF_LD9,
  55         PA16_PF_LD10,
  56         PA17_PF_LD11,
  57         PA18_PF_LD12,
  58         PA19_PF_LD13,
  59         PA20_PF_LD14,
  60         PA21_PF_LD15,
  61         PA22_PF_LD16,
  62         PA23_PF_LD17,
  63         PA24_PF_REV,
  64         PA25_PF_CLS,
  65         PA26_PF_PS,
  66         PA27_PF_SPL_SPR,
  67         PA28_PF_HSYNC,
  68         PA29_PF_VSYNC,
  69         PA30_PF_CONTRAST,
  70         PA31_PF_OE_ACD,
  71         /*
  72          * it seems the data line misses a pullup, so we must enable
  73          * the internal pullup as a local workaround
  74          */
  75         PD17_PF_I2C_DATA | GPIO_PUEN,
  76         PD18_PF_I2C_CLK,
  77         /* Camera */
  78         PB10_PF_CSI_D0,
  79         PB11_PF_CSI_D1,
  80         PB12_PF_CSI_D2,
  81         PB13_PF_CSI_D3,
  82         PB14_PF_CSI_D4,
  83         PB15_PF_CSI_MCLK,
  84         PB16_PF_CSI_PIXCLK,
  85         PB17_PF_CSI_D5,
  86         PB18_PF_CSI_D6,
  87         PB19_PF_CSI_D7,
  88         PB20_PF_CSI_VSYNC,
  89         PB21_PF_CSI_HSYNC,
  90 };
  91
  92 static int pcm970_sdhc2_get_ro(struct device *dev)
  93 {
  94         return gpio_get_value(GPIO_PORTC + 28);
  95 }
  96
  97 static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
  98 {
  99         int ret;
 100
 101         ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING,
 102                                 "imx-mmc-detect", data);
 103         if (ret)
 104                 return ret;
 105
 106         ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
 107         if (ret) {
 108                 free_irq(IRQ_GPIOC(29), data);
 109                 return ret;
 110         }
 111
 112         gpio_direction_input(GPIO_PORTC + 28);
 113
 114         return 0;
 115 }
 116
 117 static void pcm970_sdhc2_exit(struct device *dev, void *data)
 118 {
 119         free_irq(IRQ_GPIOC(29), data);
 120         gpio_free(GPIO_PORTC + 28);
 121 }
 122
 123 static struct imxmmc_platform_data sdhc_pdata = {
 124         .get_ro = pcm970_sdhc2_get_ro,
 125         .init = pcm970_sdhc2_init,
 126         .exit = pcm970_sdhc2_exit,
 127 };
 128
 129 static struct imx_fb_videomode pcm970_modes[] = {
 130         {
 131                 .mode = {
 132                         .name           = "Sharp-LQ035Q7",
 133                         .refresh        = 60,
 134                         .xres           = 240,
 135                         .yres           = 320,
 136                         .pixclock       = 188679, /* in ps (5.3MHz) */
 137                         .hsync_len      = 7,
 138                         .left_margin    = 5,
 139                         .right_margin   = 16,
 140                         .vsync_len      = 1,
 141                         .upper_margin   = 7,
 142                         .lower_margin   = 9,
 143                 },
 144                 /*
 145                  * - HSYNC active high
 146                  * - VSYNC active high
 147                  * - clk notenabled while idle
 148                  * - clock not inverted
 149                  * - data not inverted
 150                  * - data enable low active
 151                  * - enable sharp mode
 152                  */
 153                 .pcr            = 0xF00080C0,
 154                 .bpp            = 16,
 155         }, {
 156                 .mode = {
 157                         .name           = "TX090",
 158                         .refresh        = 60,
 159                         .xres           = 240,
 160                         .yres           = 320,
 161                         .pixclock       = 38255,
 162                         .left_margin    = 144,
 163                         .right_margin   = 0,
 164                         .upper_margin   = 7,
 165                         .lower_margin   = 40,
 166                         .hsync_len      = 96,
 167                         .vsync_len      = 1,
 168                 },
 169                 /*
 170                  * - HSYNC active low (1 << 22)
 171                  * - VSYNC active low (1 << 23)
 172                  * - clk notenabled while idle
 173                  * - clock not inverted
 174                  * - data not inverted
 175                  * - data enable low active
 176                  * - enable sharp mode
 177                  */
 178                 .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
 179                 .bpp = 32,
 180         },
 181 };
 182
 183 static struct imx_fb_platform_data pcm038_fb_data = {
 184         .mode = pcm970_modes,
 185         .num_modes = ARRAY_SIZE(pcm970_modes),
 186
 187         .pwmr           = 0x00A903FF,
 188         .lscr1          = 0x00120300,
 189         .dmacr          = 0x00020010,
 190 };
 191
 192 static struct resource pcm970_sja1000_resources[] = {
 193         {
 194                 .start   = CS4_BASE_ADDR,
 195                 .end     = CS4_BASE_ADDR + 0x100 - 1,
 196                 .flags   = IORESOURCE_MEM,
 197         }, {
 198                 .start   = IRQ_GPIOE(19),
 199                 .end     = IRQ_GPIOE(19),
 200                 .flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 201         },
 202 };
 203
 204 struct sja1000_platform_data pcm970_sja1000_platform_data = {
 205         .clock          = 16000000 / 2,
 206         .ocr            = 0x40 | 0x18,
 207         .cdr            = 0x40,
 208 };
 209
 210 static struct platform_device pcm970_sja1000 = {
 211         .name = "sja1000_platform",
 212         .dev = {
 213                 .platform_data = &pcm970_sja1000_platform_data,
 214         },
 215         .resource = pcm970_sja1000_resources,
 216         .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
 217 };
 218
 219 /*
 220  * system init for baseboard usage. Will be called by pcm038 init.
 221  *
 222  * Add platform devices present on this baseboard and init
 223  * them from CPU side as far as required to use them later on
 224  */
 225 void __init pcm970_baseboard_init(void)
 226 {
 227         mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
 228                         "PCM970");
 229
 230         mxc_register_device(&mxc_fb_device, &pcm038_fb_data);
 231         mxc_register_device(&mxc_sdhc_device1, &sdhc_pdata);
 232         platform_device_register(&pcm970_sja1000);
 233 }