arch/arm/mach-pxa/idp.c

   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
  46 static 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
  69 static 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
  82 static 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
  88 static 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
  96 static 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
 105 static 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
 114 static 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
 131 static 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
 146 static 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
 157 static struct pxamci_platform_data idp_mci_platform_data = {
 158         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 159 };
 160
 161 static 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
 176 static 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
 190 static 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)
 198 struct 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  */
 207 static const struct {
 208         const char *name;
 209         const char *trigger;
 210 } idp_leds[] = {
 211         { "idp:green", "heartbeat", },
 212         { "idp:red", "cpu0", },
 213 };
 214
 215 static 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
 230 static 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
 238 static 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  */
 275 fs_initcall(idp_leds_init);
 276 #endif
 277
 278 MACHINE_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,
 287 MACHINE_END