arch/arm/mach-imx/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-mx27.h>
  28 #include <mach/hardware.h>
  29
  30 #include "devices-imx27.h"
  31
  32 static const int pcm970_pins[] __initconst = {
  33         /* SDHC */
  34         PB4_PF_SD2_D0,
  35         PB5_PF_SD2_D1,
  36         PB6_PF_SD2_D2,
  37         PB7_PF_SD2_D3,
  38         PB8_PF_SD2_CMD,
  39         PB9_PF_SD2_CLK,
  40         /* display */
  41         PA5_PF_LSCLK,
  42         PA6_PF_LD0,
  43         PA7_PF_LD1,
  44         PA8_PF_LD2,
  45         PA9_PF_LD3,
  46         PA10_PF_LD4,
  47         PA11_PF_LD5,
  48         PA12_PF_LD6,
  49         PA13_PF_LD7,
  50         PA14_PF_LD8,
  51         PA15_PF_LD9,
  52         PA16_PF_LD10,
  53         PA17_PF_LD11,
  54         PA18_PF_LD12,
  55         PA19_PF_LD13,
  56         PA20_PF_LD14,
  57         PA21_PF_LD15,
  58         PA22_PF_LD16,
  59         PA23_PF_LD17,
  60         PA24_PF_REV,
  61         PA25_PF_CLS,
  62         PA26_PF_PS,
  63         PA27_PF_SPL_SPR,
  64         PA28_PF_HSYNC,
  65         PA29_PF_VSYNC,
  66         PA30_PF_CONTRAST,
  67         PA31_PF_OE_ACD,
  68         /*
  69          * it seems the data line misses a pullup, so we must enable
  70          * the internal pullup as a local workaround
  71          */
  72         PD17_PF_I2C_DATA | GPIO_PUEN,
  73         PD18_PF_I2C_CLK,
  74         /* Camera */
  75         PB10_PF_CSI_D0,
  76         PB11_PF_CSI_D1,
  77         PB12_PF_CSI_D2,
  78         PB13_PF_CSI_D3,
  79         PB14_PF_CSI_D4,
  80         PB15_PF_CSI_MCLK,
  81         PB16_PF_CSI_PIXCLK,
  82         PB17_PF_CSI_D5,
  83         PB18_PF_CSI_D6,
  84         PB19_PF_CSI_D7,
  85         PB20_PF_CSI_VSYNC,
  86         PB21_PF_CSI_HSYNC,
  87 };
  88
  89 static int pcm970_sdhc2_get_ro(struct device *dev)
  90 {
  91         return gpio_get_value(GPIO_PORTC + 28);
  92 }
  93
  94 static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
  95 {
  96         int ret;
  97
  98         ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING,
  99                                 "imx-mmc-detect", data);
 100         if (ret)
 101                 return ret;
 102
 103         ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
 104         if (ret) {
 105                 free_irq(IRQ_GPIOC(29), data);
 106                 return ret;
 107         }
 108
 109         gpio_direction_input(GPIO_PORTC + 28);
 110
 111         return 0;
 112 }
 113
 114 static void pcm970_sdhc2_exit(struct device *dev, void *data)
 115 {
 116         free_irq(IRQ_GPIOC(29), data);
 117         gpio_free(GPIO_PORTC + 28);
 118 }
 119
 120 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 121         .get_ro = pcm970_sdhc2_get_ro,
 122         .init = pcm970_sdhc2_init,
 123         .exit = pcm970_sdhc2_exit,
 124 };
 125
 126 static struct imx_fb_videomode pcm970_modes[] = {
 127         {
 128                 .mode = {
 129                         .name           = "Sharp-LQ035Q7",
 130                         .refresh        = 60,
 131                         .xres           = 240,
 132                         .yres           = 320,
 133                         .pixclock       = 188679, /* in ps (5.3MHz) */
 134                         .hsync_len      = 7,
 135                         .left_margin    = 5,
 136                         .right_margin   = 16,
 137                         .vsync_len      = 1,
 138                         .upper_margin   = 7,
 139                         .lower_margin   = 9,
 140                 },
 141                 /*
 142                  * - HSYNC active high
 143                  * - VSYNC active high
 144                  * - clk notenabled while idle
 145                  * - clock not inverted
 146                  * - data not inverted
 147                  * - data enable low active
 148                  * - enable sharp mode
 149                  */
 150                 .pcr            = 0xF00080C0,
 151                 .bpp            = 16,
 152         }, {
 153                 .mode = {
 154                         .name           = "TX090",
 155                         .refresh        = 60,
 156                         .xres           = 240,
 157                         .yres           = 320,
 158                         .pixclock       = 38255,
 159                         .left_margin    = 144,
 160                         .right_margin   = 0,
 161                         .upper_margin   = 7,
 162                         .lower_margin   = 40,
 163                         .hsync_len      = 96,
 164                         .vsync_len      = 1,
 165                 },
 166                 /*
 167                  * - HSYNC active low (1 << 22)
 168                  * - VSYNC active low (1 << 23)
 169                  * - clk notenabled while idle
 170                  * - clock not inverted
 171                  * - data not inverted
 172                  * - data enable low active
 173                  * - enable sharp mode
 174                  */
 175                 .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
 176                 .bpp = 32,
 177         },
 178 };
 179
 180 static const struct imx_fb_platform_data pcm038_fb_data __initconst = {
 181         .mode = pcm970_modes,
 182         .num_modes = ARRAY_SIZE(pcm970_modes),
 183
 184         .pwmr           = 0x00A903FF,
 185         .lscr1          = 0x00120300,
 186         .dmacr          = 0x00020010,
 187 };
 188
 189 static struct resource pcm970_sja1000_resources[] = {
 190         {
 191                 .start   = MX27_CS4_BASE_ADDR,
 192                 .end     = MX27_CS4_BASE_ADDR + 0x100 - 1,
 193                 .flags   = IORESOURCE_MEM,
 194         }, {
 195                 .start   = IRQ_GPIOE(19),
 196                 .end     = IRQ_GPIOE(19),
 197                 .flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 198         },
 199 };
 200
 201 static struct sja1000_platform_data pcm970_sja1000_platform_data = {
 202         .osc_freq       = 16000000,
 203         .ocr            = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
 204         .cdr            = CDR_CBP,
 205 };
 206
 207 static struct platform_device pcm970_sja1000 = {
 208         .name = "sja1000_platform",
 209         .dev = {
 210                 .platform_data = &pcm970_sja1000_platform_data,
 211         },
 212         .resource = pcm970_sja1000_resources,
 213         .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
 214 };
 215
 216 /*
 217  * system init for baseboard usage. Will be called by pcm038 init.
 218  *
 219  * Add platform devices present on this baseboard and init
 220  * them from CPU side as far as required to use them later on
 221  */
 222 void __init pcm970_baseboard_init(void)
 223 {
 224         mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
 225                         "PCM970");
 226
 227         imx27_add_imx_fb(&pcm038_fb_data);
 228         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN);
 229         imx27_add_mxc_mmc(1, &sdhc_pdata);
 230         platform_device_register(&pcm970_sja1000);
 231 }