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