linux/arch/arm/mach-pxa/idp.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  linux/arch/arm/mach-pxa/idp.c
   4 *
   5 *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
   6 *
   7 *  2001-09-13: Cliff Brake <cbrake@accelent.com>
   8 *              Initial code
   9 *
  10 *  2005-02-15: Cliff Brake <cliff.brake@gmail.com>
  11 *              <http://www.vibren.com> <http://bec-systems.com>
  12 *              Updated for 2.6 kernel
  13 */
  14
  15#include <linux/init.h>
  16#include <linux/interrupt.h>
  17#include <linux/irq.h>
  18#include <linux/leds.h>
  19#include <linux/platform_device.h>
  20#include <linux/fb.h>
  21
  22#include <asm/setup.h>
  23#include <asm/memory.h>
  24#include <asm/mach-types.h>
  25#include <mach/hardware.h>
  26#include <asm/irq.h>
  27
  28#include <asm/mach/arch.h>
  29#include <asm/mach/map.h>
  30
  31#include "pxa25x.h"
  32#include "idp.h"
  33#include <linux/platform_data/video-pxafb.h>
  34#include <mach/bitfield.h>
  35#include <linux/platform_data/mmc-pxamci.h>
  36#include <linux/smc91x.h>
  37
  38#include "generic.h"
  39#include "devices.h"
  40
  41/* TODO:
  42 * - add pxa2xx_audio_ops_t device structure
  43 * - Ethernet interrupt
  44 */
  45
  46static unsigned long idp_pin_config[] __initdata = {
  47        /* LCD */
  48        GPIOxx_LCD_DSTN_16BPP,
  49
  50        /* BTUART */
  51        GPIO42_BTUART_RXD,
  52        GPIO43_BTUART_TXD,
  53        GPIO44_BTUART_CTS,
  54        GPIO45_BTUART_RTS,
  55
  56        /* STUART */
  57        GPIO46_STUART_RXD,
  58        GPIO47_STUART_TXD,
  59
  60        /* MMC */
  61        GPIO6_MMC_CLK,
  62        GPIO8_MMC_CS0,
  63
  64        /* Ethernet */
  65        GPIO33_nCS_5,   /* Ethernet CS */
  66        GPIO4_GPIO,     /* Ethernet IRQ */
  67};
  68
  69static struct resource smc91x_resources[] = {
  70        [0] = {
  71                .start  = (IDP_ETH_PHYS + 0x300),
  72                .end    = (IDP_ETH_PHYS + 0xfffff),
  73                .flags  = IORESOURCE_MEM,
  74        },
  75        [1] = {
  76                .start  = PXA_GPIO_TO_IRQ(4),
  77                .end    = PXA_GPIO_TO_IRQ(4),
  78                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
  79        }
  80};
  81
  82static struct smc91x_platdata smc91x_platdata = {
  83        .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
  84                 SMC91X_USE_DMA | SMC91X_NOWAIT,
  85        .pxa_u16_align4 = true,
  86};
  87
  88static struct platform_device smc91x_device = {
  89        .name           = "smc91x",
  90        .id             = 0,
  91        .num_resources  = ARRAY_SIZE(smc91x_resources),
  92        .resource       = smc91x_resources,
  93        .dev.platform_data = &smc91x_platdata,
  94};
  95
  96static void idp_backlight_power(int on)
  97{
  98        if (on) {
  99                IDP_CPLD_LCD |= (1<<1);
 100        } else {
 101                IDP_CPLD_LCD &= ~(1<<1);
 102        }
 103}
 104
 105static void idp_vlcd(int on)
 106{
 107        if (on) {
 108                IDP_CPLD_LCD |= (1<<2);
 109        } else {
 110                IDP_CPLD_LCD &= ~(1<<2);
 111        }
 112}
 113
 114static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
 115{
 116        if (on) {
 117                IDP_CPLD_LCD |= (1<<0);
 118        } else {
 119                IDP_CPLD_LCD &= ~(1<<0);
 120        }
 121
 122        /* call idp_vlcd for now as core driver does not support
 123         * both power and vlcd hooks.  Note, this is not technically
 124         * the correct sequence, but seems to work.  Disclaimer:
 125         * this may eventually damage the display.
 126         */
 127
 128        idp_vlcd(on);
 129}
 130
 131static struct pxafb_mode_info sharp_lm8v31_mode = {
 132        .pixclock       = 270000,
 133        .xres           = 640,
 134        .yres           = 480,
 135        .bpp            = 16,
 136        .hsync_len      = 1,
 137        .left_margin    = 3,
 138        .right_margin   = 3,
 139        .vsync_len      = 1,
 140        .upper_margin   = 0,
 141        .lower_margin   = 0,
 142        .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 143        .cmap_greyscale = 0,
 144};
 145
 146static struct pxafb_mach_info sharp_lm8v31 = {
 147        .modes          = &sharp_lm8v31_mode,
 148        .num_modes      = 1,
 149        .cmap_inverse   = 0,
 150        .cmap_static    = 0,
 151        .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
 152                          LCD_AC_BIAS_FREQ(255),
 153        .pxafb_backlight_power = &idp_backlight_power,
 154        .pxafb_lcd_power = &idp_lcd_power
 155};
 156
 157static struct pxamci_platform_data idp_mci_platform_data = {
 158        .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 159};
 160
 161static void __init idp_init(void)
 162{
 163        printk("idp_init()\n");
 164
 165        pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
 166        pxa_set_ffuart_info(NULL);
 167        pxa_set_btuart_info(NULL);
 168        pxa_set_stuart_info(NULL);
 169
 170        platform_device_register(&smc91x_device);
 171        //platform_device_register(&mst_audio_device);
 172        pxa_set_fb_info(NULL, &sharp_lm8v31);
 173        pxa_set_mci_info(&idp_mci_platform_data);
 174}
 175
 176static struct map_desc idp_io_desc[] __initdata = {
 177        {
 178                .virtual        =  IDP_COREVOLT_VIRT,
 179                .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
 180                .length         = IDP_COREVOLT_SIZE,
 181                .type           = MT_DEVICE
 182        }, {
 183                .virtual        =  IDP_CPLD_VIRT,
 184                .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
 185                .length         = IDP_CPLD_SIZE,
 186                .type           = MT_DEVICE
 187        }
 188};
 189
 190static void __init idp_map_io(void)
 191{
 192        pxa25x_map_io();
 193        iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
 194}
 195
 196/* LEDs */
 197#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
 198struct idp_led {
 199        struct led_classdev     cdev;
 200        u8                      mask;
 201};
 202
 203/*
 204 * The triggers lines up below will only be used if the
 205 * LED triggers are compiled in.
 206 */
 207static const struct {
 208        const char *name;
 209        const char *trigger;
 210} idp_leds[] = {
 211        { "idp:green", "heartbeat", },
 212        { "idp:red", "cpu0", },
 213};
 214
 215static void idp_led_set(struct led_classdev *cdev,
 216                enum led_brightness b)
 217{
 218        struct idp_led *led = container_of(cdev,
 219                        struct idp_led, cdev);
 220        u32 reg = IDP_CPLD_LED_CONTROL;
 221
 222        if (b != LED_OFF)
 223                reg &= ~led->mask;
 224        else
 225                reg |= led->mask;
 226
 227        IDP_CPLD_LED_CONTROL = reg;
 228}
 229
 230static enum led_brightness idp_led_get(struct led_classdev *cdev)
 231{
 232        struct idp_led *led = container_of(cdev,
 233                        struct idp_led, cdev);
 234
 235        return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
 236}
 237
 238static int __init idp_leds_init(void)
 239{
 240        int i;
 241
 242        if (!machine_is_pxa_idp())
 243                return -ENODEV;
 244
 245        for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
 246                struct idp_led *led;
 247
 248                led = kzalloc(sizeof(*led), GFP_KERNEL);
 249                if (!led)
 250                        break;
 251
 252                led->cdev.name = idp_leds[i].name;
 253                led->cdev.brightness_set = idp_led_set;
 254                led->cdev.brightness_get = idp_led_get;
 255                led->cdev.default_trigger = idp_leds[i].trigger;
 256
 257                if (i == 0)
 258                        led->mask = IDP_HB_LED;
 259                else
 260                        led->mask = IDP_BUSY_LED;
 261
 262                if (led_classdev_register(NULL, &led->cdev) < 0) {
 263                        kfree(led);
 264                        break;
 265                }
 266        }
 267
 268        return 0;
 269}
 270
 271/*
 272 * Since we may have triggers on any subsystem, defer registration
 273 * until after subsystem_init.
 274 */
 275fs_initcall(idp_leds_init);
 276#endif
 277
 278MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
 279        /* Maintainer: Vibren Technologies */
 280        .map_io         = idp_map_io,
 281        .nr_irqs        = PXA_NR_IRQS,
 282        .init_irq       = pxa25x_init_irq,
 283        .handle_irq     = pxa25x_handle_irq,
 284        .init_time      = pxa_timer_init,
 285        .init_machine   = idp_init,
 286        .restart        = pxa_restart,
 287MACHINE_END
 288