arch/arm/mach-pxa/zylonite.c

   1 /*
   2  * linux/arch/arm/mach-pxa/zylonite.c
   3  *
   4  * Support for the PXA3xx Development Platform (aka Zylonite)
   5  *
   6  * Copyright (C) 2006 Marvell International Ltd.
   7  *
   8  * 2007-09-04: eric miao <eric.miao@marvell.com>
   9  *             rewrite to align with latest kernel
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/init.h>
  20 #include <linux/platform_device.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/hardware.h>
  25 #include <asm/arch/gpio.h>
  26 #include <asm/arch/pxafb.h>
  27 #include <asm/arch/zylonite.h>
  28 #include <asm/arch/mmc.h>
  29
  30 #include "generic.h"
  31
  32 #define MAX_SLOTS       3
  33 struct platform_mmc_slot zylonite_mmc_slot[MAX_SLOTS];
  34
  35 int gpio_backlight;
  36 int gpio_eth_irq;
  37
  38 int lcd_id;
  39 int lcd_orientation;
  40
  41 static struct resource smc91x_resources[] = {
  42         [0] = {
  43                 .start  = ZYLONITE_ETH_PHYS + 0x300,
  44                 .end    = ZYLONITE_ETH_PHYS + 0xfffff,
  45                 .flags  = IORESOURCE_MEM,
  46         },
  47         [1] = {
  48                 .start  = -1,   /* for run-time assignment */
  49                 .end    = -1,
  50                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  51         }
  52 };
  53
  54 static struct platform_device smc91x_device = {
  55         .name           = "smc91x",
  56         .id             = 0,
  57         .num_resources  = ARRAY_SIZE(smc91x_resources),
  58         .resource       = smc91x_resources,
  59 };
  60
  61 #if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULES)
  62 static void zylonite_backlight_power(int on)
  63 {
  64         gpio_set_value(gpio_backlight, on);
  65 }
  66
  67 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
  68         .pixclock               = 110000,
  69         .xres                   = 240,
  70         .yres                   = 320,
  71         .bpp                    = 16,
  72         .hsync_len              = 4,
  73         .left_margin            = 6,
  74         .right_margin           = 4,
  75         .vsync_len              = 2,
  76         .upper_margin           = 2,
  77         .lower_margin           = 3,
  78         .sync                   = FB_SYNC_VERT_HIGH_ACT,
  79 };
  80
  81 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
  82         .pixclock               = 50000,
  83         .xres                   = 640,
  84         .yres                   = 480,
  85         .bpp                    = 16,
  86         .hsync_len              = 1,
  87         .left_margin            = 0x9f,
  88         .right_margin           = 1,
  89         .vsync_len              = 44,
  90         .upper_margin           = 0,
  91         .lower_margin           = 0,
  92         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
  93 };
  94
  95 static struct pxafb_mach_info zylonite_toshiba_lcd_info = {
  96         .num_modes              = 1,
  97         .lccr0                  = LCCR0_Act,
  98         .lccr3                  = LCCR3_PCP,
  99         .pxafb_backlight_power  = zylonite_backlight_power,
 100 };
 101
 102 static struct pxafb_mode_info sharp_ls037_modes[] = {
 103         [0] = {
 104                 .pixclock       = 158000,
 105                 .xres           = 240,
 106                 .yres           = 320,
 107                 .bpp            = 16,
 108                 .hsync_len      = 4,
 109                 .left_margin    = 39,
 110                 .right_margin   = 39,
 111                 .vsync_len      = 1,
 112                 .upper_margin   = 2,
 113                 .lower_margin   = 3,
 114                 .sync           = 0,
 115         },
 116         [1] = {
 117                 .pixclock       = 39700,
 118                 .xres           = 480,
 119                 .yres           = 640,
 120                 .bpp            = 16,
 121                 .hsync_len      = 8,
 122                 .left_margin    = 81,
 123                 .right_margin   = 81,
 124                 .vsync_len      = 1,
 125                 .upper_margin   = 2,
 126                 .lower_margin   = 7,
 127                 .sync           = 0,
 128         },
 129 };
 130
 131 static struct pxafb_mach_info zylonite_sharp_lcd_info = {
 132         .modes                  = sharp_ls037_modes,
 133         .num_modes              = 2,
 134         .lccr0                  = LCCR0_Act,
 135         .lccr3                  = LCCR3_PCP | LCCR3_HSP | LCCR3_VSP,
 136         .pxafb_backlight_power  = zylonite_backlight_power,
 137 };
 138
 139 static void __init zylonite_init_lcd(void)
 140 {
 141         /* backlight GPIO: output, default on */
 142         gpio_direction_output(gpio_backlight, 1);
 143
 144         if (lcd_id & 0x20) {
 145                 set_pxa_fb_info(&zylonite_sharp_lcd_info);
 146                 return;
 147         }
 148
 149         /* legacy LCD panels, it would be handy here if LCD panel type can
 150          * be decided at run-time
 151          */
 152         if (1)
 153                 zylonite_toshiba_lcd_info.modes = &toshiba_ltm035a776c_mode;
 154         else
 155                 zylonite_toshiba_lcd_info.modes = &toshiba_ltm04c380k_mode;
 156
 157         set_pxa_fb_info(&zylonite_toshiba_lcd_info);
 158 }
 159 #else
 160 static inline void zylonite_init_lcd(void) {}
 161 #endif
 162
 163 #if defined(CONFIG_MMC)
 164 static int zylonite_mci_ro(struct device *dev)
 165 {
 166         struct platform_device *pdev = to_platform_device(dev);
 167
 168         return gpio_get_value(zylonite_mmc_slot[pdev->id].gpio_wp);
 169 }
 170
 171 static int zylonite_mci_init(struct device *dev,
 172                              irq_handler_t zylonite_detect_int,
 173                              void *data)
 174 {
 175         struct platform_device *pdev = to_platform_device(dev);
 176         int err, cd_irq, gpio_cd, gpio_wp;
 177
 178         cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd);
 179         gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd;
 180         gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp;
 181
 182         /*
 183          * setup GPIO for Zylonite MMC controller
 184          */
 185         err = gpio_request(gpio_cd, "mmc card detect");
 186         if (err)
 187                 goto err_request_cd;
 188         gpio_direction_input(gpio_cd);
 189
 190         err = gpio_request(gpio_wp, "mmc write protect");
 191         if (err)
 192                 goto err_request_wp;
 193         gpio_direction_input(gpio_wp);
 194
 195         err = request_irq(cd_irq, zylonite_detect_int,
 196                           IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 197                           "MMC card detect", data);
 198         if (err) {
 199                 printk(KERN_ERR "%s: MMC/SD/SDIO: "
 200                                 "can't request card detect IRQ\n", __func__);
 201                 goto err_request_irq;
 202         }
 203
 204         return 0;
 205
 206 err_request_irq:
 207         gpio_free(gpio_wp);
 208 err_request_wp:
 209         gpio_free(gpio_cd);
 210 err_request_cd:
 211         return err;
 212 }
 213
 214 static void zylonite_mci_exit(struct device *dev, void *data)
 215 {
 216         struct platform_device *pdev = to_platform_device(dev);
 217         int cd_irq, gpio_cd, gpio_wp;
 218
 219         cd_irq = gpio_to_irq(zylonite_mmc_slot[pdev->id].gpio_cd);
 220         gpio_cd = zylonite_mmc_slot[pdev->id].gpio_cd;
 221         gpio_wp = zylonite_mmc_slot[pdev->id].gpio_wp;
 222
 223         free_irq(cd_irq, data);
 224         gpio_free(gpio_cd);
 225         gpio_free(gpio_wp);
 226 }
 227
 228 static struct pxamci_platform_data zylonite_mci_platform_data = {
 229         .detect_delay   = 20,
 230         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 231         .init           = zylonite_mci_init,
 232         .exit           = zylonite_mci_exit,
 233         .get_ro         = zylonite_mci_ro,
 234 };
 235
 236 static struct pxamci_platform_data zylonite_mci2_platform_data = {
 237         .detect_delay   = 20,
 238         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 239 };
 240
 241 static void __init zylonite_init_mmc(void)
 242 {
 243         pxa_set_mci_info(&zylonite_mci_platform_data);
 244         pxa3xx_set_mci2_info(&zylonite_mci2_platform_data);
 245         if (cpu_is_pxa310())
 246                 pxa3xx_set_mci3_info(&zylonite_mci_platform_data);
 247 }
 248 #else
 249 static inline void zylonite_init_mmc(void) {}
 250 #endif
 251
 252 static void __init zylonite_init(void)
 253 {
 254         /* board-processor specific initialization */
 255         zylonite_pxa300_init();
 256         zylonite_pxa320_init();
 257
 258         /*
 259          * Note: We depend that the bootloader set
 260          * the correct value to MSC register for SMC91x.
 261          */
 262         smc91x_resources[1].start = gpio_to_irq(gpio_eth_irq);
 263         smc91x_resources[1].end   = gpio_to_irq(gpio_eth_irq);
 264         platform_device_register(&smc91x_device);
 265
 266         zylonite_init_lcd();
 267         zylonite_init_mmc();
 268 }
 269
 270 MACHINE_START(ZYLONITE, "PXA3xx Platform Development Kit (aka Zylonite)")
 271         .phys_io        = 0x40000000,
 272         .boot_params    = 0xa0000100,
 273         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 274         .map_io         = pxa_map_io,
 275         .init_irq       = pxa3xx_init_irq,
 276         .timer          = &pxa_timer,
 277         .init_machine   = zylonite_init,
 278 MACHINE_END