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 #include "devices.h"
  32
  33 static const int pcm970_pins[] __initconst = {
  34         /* SDHC */
  35         PB4_PF_SD2_D0,
  36         PB5_PF_SD2_D1,
  37         PB6_PF_SD2_D2,
  38         PB7_PF_SD2_D3,
  39         PB8_PF_SD2_CMD,
  40         PB9_PF_SD2_CLK,
  41         /* display */
  42         PA5_PF_LSCLK,
  43         PA6_PF_LD0,
  44         PA7_PF_LD1,
  45         PA8_PF_LD2,
  46         PA9_PF_LD3,
  47         PA10_PF_LD4,
  48         PA11_PF_LD5,
  49         PA12_PF_LD6,
  50         PA13_PF_LD7,
  51         PA14_PF_LD8,
  52         PA15_PF_LD9,
  53         PA16_PF_LD10,
  54         PA17_PF_LD11,
  55         PA18_PF_LD12,
  56         PA19_PF_LD13,
  57         PA20_PF_LD14,
  58         PA21_PF_LD15,
  59         PA22_PF_LD16,
  60         PA23_PF_LD17,
  61         PA24_PF_REV,
  62         PA25_PF_CLS,
  63         PA26_PF_PS,
  64         PA27_PF_SPL_SPR,
  65         PA28_PF_HSYNC,
  66         PA29_PF_VSYNC,
  67         PA30_PF_CONTRAST,
  68         PA31_PF_OE_ACD,
  69         /*
  70          * it seems the data line misses a pullup, so we must enable
  71          * the internal pullup as a local workaround
  72          */
  73         PD17_PF_I2C_DATA | GPIO_PUEN,
  74         PD18_PF_I2C_CLK,
  75         /* Camera */
  76         PB10_PF_CSI_D0,
  77         PB11_PF_CSI_D1,
  78         PB12_PF_CSI_D2,
  79         PB13_PF_CSI_D3,
  80         PB14_PF_CSI_D4,
  81         PB15_PF_CSI_MCLK,
  82         PB16_PF_CSI_PIXCLK,
  83         PB17_PF_CSI_D5,
  84         PB18_PF_CSI_D6,
  85         PB19_PF_CSI_D7,
  86         PB20_PF_CSI_VSYNC,
  87         PB21_PF_CSI_HSYNC,
  88 };
  89
  90 static int pcm970_sdhc2_get_ro(struct device *dev)
  91 {
  92         return gpio_get_value(GPIO_PORTC + 28);
  93 }
  94
  95 static int pcm970_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data)
  96 {
  97         int ret;
  98
  99         ret = request_irq(IRQ_GPIOC(29), detect_irq, IRQF_TRIGGER_FALLING,
 100                                 "imx-mmc-detect", data);
 101         if (ret)
 102                 return ret;
 103
 104         ret = gpio_request(GPIO_PORTC + 28, "imx-mmc-ro");
 105         if (ret) {
 106                 free_irq(IRQ_GPIOC(29), data);
 107                 return ret;
 108         }
 109
 110         gpio_direction_input(GPIO_PORTC + 28);
 111
 112         return 0;
 113 }
 114
 115 static void pcm970_sdhc2_exit(struct device *dev, void *data)
 116 {
 117         free_irq(IRQ_GPIOC(29), data);
 118         gpio_free(GPIO_PORTC + 28);
 119 }
 120
 121 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 122         .get_ro = pcm970_sdhc2_get_ro,
 123         .init = pcm970_sdhc2_init,
 124         .exit = pcm970_sdhc2_exit,
 125 };
 126
 127 static struct imx_fb_videomode pcm970_modes[] = {
 128         {
 129                 .mode = {
 130                         .name           = "Sharp-LQ035Q7",
 131                         .refresh        = 60,
 132                         .xres           = 240,
 133                         .yres           = 320,
 134                         .pixclock       = 188679, /* in ps (5.3MHz) */
 135                         .hsync_len      = 7,
 136                         .left_margin    = 5,
 137                         .right_margin   = 16,
 138                         .vsync_len      = 1,
 139                         .upper_margin   = 7,
 140                         .lower_margin   = 9,
 141                 },
 142                 /*
 143                  * - HSYNC active high
 144                  * - VSYNC active high
 145                  * - clk notenabled while idle
 146                  * - clock not inverted
 147                  * - data not inverted
 148                  * - data enable low active
 149                  * - enable sharp mode
 150                  */
 151                 .pcr            = 0xF00080C0,
 152                 .bpp            = 16,
 153         }, {
 154                 .mode = {
 155                         .name           = "TX090",
 156                         .refresh        = 60,
 157                         .xres           = 240,
 158                         .yres           = 320,
 159                         .pixclock       = 38255,
 160                         .left_margin    = 144,
 161                         .right_margin   = 0,
 162                         .upper_margin   = 7,
 163                         .lower_margin   = 40,
 164                         .hsync_len      = 96,
 165                         .vsync_len      = 1,
 166                 },
 167                 /*
 168                  * - HSYNC active low (1 << 22)
 169                  * - VSYNC active low (1 << 23)
 170                  * - clk notenabled while idle
 171                  * - clock not inverted
 172                  * - data not inverted
 173                  * - data enable low active
 174                  * - enable sharp mode
 175                  */
 176                 .pcr = 0xF0008080 | (1<<22) | (1<<23) | (1<<19),
 177                 .bpp = 32,
 178         },
 179 };
 180
 181 static const struct imx_fb_platform_data pcm038_fb_data __initconst = {
 182         .mode = pcm970_modes,
 183         .num_modes = ARRAY_SIZE(pcm970_modes),
 184
 185         .pwmr           = 0x00A903FF,
 186         .lscr1          = 0x00120300,
 187         .dmacr          = 0x00020010,
 188 };
 189
 190 static struct resource pcm970_sja1000_resources[] = {
 191         {
 192                 .start   = MX27_CS4_BASE_ADDR,
 193                 .end     = MX27_CS4_BASE_ADDR + 0x100 - 1,
 194                 .flags   = IORESOURCE_MEM,
 195         }, {
 196                 .start   = IRQ_GPIOE(19),
 197                 .end     = IRQ_GPIOE(19),
 198                 .flags   = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
 199         },
 200 };
 201
 202 static struct sja1000_platform_data pcm970_sja1000_platform_data = {
 203         .osc_freq       = 16000000,
 204         .ocr            = OCR_TX1_PULLDOWN | OCR_TX0_PUSHPULL,
 205         .cdr            = CDR_CBP,
 206 };
 207
 208 static struct platform_device pcm970_sja1000 = {
 209         .name = "sja1000_platform",
 210         .dev = {
 211                 .platform_data = &pcm970_sja1000_platform_data,
 212         },
 213         .resource = pcm970_sja1000_resources,
 214         .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
 215 };
 216
 217 /*
 218  * system init for baseboard usage. Will be called by pcm038 init.
 219  *
 220  * Add platform devices present on this baseboard and init
 221  * them from CPU side as far as required to use them later on
 222  */
 223 void __init pcm970_baseboard_init(void)
 224 {
 225         mxc_gpio_setup_multiple_pins(pcm970_pins, ARRAY_SIZE(pcm970_pins),
 226                         "PCM970");
 227
 228         imx27_add_imx_fb(&pcm038_fb_data);
 229         mxc_gpio_mode(GPIO_PORTC | 28 | GPIO_GPIO | GPIO_IN);
 230         imx27_add_mxc_mmc(1, &sdhc_pdata);
 231         platform_device_register(&pcm970_sja1000);
 232 }