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Linux/arch/arm/mach-pxa/idp.c

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  1 /*
  2  *  linux/arch/arm/mach-pxa/idp.c
  3  *
  4  *  This program is free software; you can redistribute it and/or modify
  5  *  it under the terms of the GNU General Public License version 2 as
  6  *  published by the Free Software Foundation.
  7  *
  8  *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
  9  *
 10  *  2001-09-13: Cliff Brake <cbrake@accelent.com>
 11  *              Initial code
 12  *
 13  *  2005-02-15: Cliff Brake <cliff.brake@gmail.com>
 14  *              <http://www.vibren.com> <http://bec-systems.com>
 15  *              Updated for 2.6 kernel
 16  *
 17  */
 18 
 19 #include <linux/init.h>
 20 #include <linux/interrupt.h>
 21 #include <linux/irq.h>
 22 #include <linux/platform_device.h>
 23 #include <linux/fb.h>
 24 
 25 #include <asm/setup.h>
 26 #include <asm/memory.h>
 27 #include <asm/mach-types.h>
 28 #include <mach/hardware.h>
 29 #include <asm/irq.h>
 30 
 31 #include <asm/mach/arch.h>
 32 #include <asm/mach/map.h>
 33 
 34 #include <mach/pxa25x.h>
 35 #include <mach/idp.h>
 36 #include <linux/platform_data/video-pxafb.h>
 37 #include <mach/bitfield.h>
 38 #include <linux/platform_data/mmc-pxamci.h>
 39 #include <linux/smc91x.h>
 40 
 41 #include "generic.h"
 42 #include "devices.h"
 43 
 44 /* TODO:
 45  * - add pxa2xx_audio_ops_t device structure
 46  * - Ethernet interrupt
 47  */
 48 
 49 static unsigned long idp_pin_config[] __initdata = {
 50         /* LCD */
 51         GPIOxx_LCD_DSTN_16BPP,
 52 
 53         /* BTUART */
 54         GPIO42_BTUART_RXD,
 55         GPIO43_BTUART_TXD,
 56         GPIO44_BTUART_CTS,
 57         GPIO45_BTUART_RTS,
 58 
 59         /* STUART */
 60         GPIO46_STUART_RXD,
 61         GPIO47_STUART_TXD,
 62 
 63         /* MMC */
 64         GPIO6_MMC_CLK,
 65         GPIO8_MMC_CS0,
 66 
 67         /* Ethernet */
 68         GPIO33_nCS_5,   /* Ethernet CS */
 69         GPIO4_GPIO,     /* Ethernet IRQ */
 70 };
 71 
 72 static struct resource smc91x_resources[] = {
 73         [0] = {
 74                 .start  = (IDP_ETH_PHYS + 0x300),
 75                 .end    = (IDP_ETH_PHYS + 0xfffff),
 76                 .flags  = IORESOURCE_MEM,
 77         },
 78         [1] = {
 79                 .start  = PXA_GPIO_TO_IRQ(4),
 80                 .end    = PXA_GPIO_TO_IRQ(4),
 81                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 82         }
 83 };
 84 
 85 static struct smc91x_platdata smc91x_platdata = {
 86         .flags = SMC91X_USE_32BIT | SMC91X_USE_DMA | SMC91X_NOWAIT,
 87 };
 88 
 89 static struct platform_device smc91x_device = {
 90         .name           = "smc91x",
 91         .id             = 0,
 92         .num_resources  = ARRAY_SIZE(smc91x_resources),
 93         .resource       = smc91x_resources,
 94         .dev.platform_data = &smc91x_platdata,
 95 };
 96 
 97 static void idp_backlight_power(int on)
 98 {
 99         if (on) {
100                 IDP_CPLD_LCD |= (1<<1);
101         } else {
102                 IDP_CPLD_LCD &= ~(1<<1);
103         }
104 }
105 
106 static void idp_vlcd(int on)
107 {
108         if (on) {
109                 IDP_CPLD_LCD |= (1<<2);
110         } else {
111                 IDP_CPLD_LCD &= ~(1<<2);
112         }
113 }
114 
115 static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
116 {
117         if (on) {
118                 IDP_CPLD_LCD |= (1<<0);
119         } else {
120                 IDP_CPLD_LCD &= ~(1<<0);
121         }
122 
123         /* call idp_vlcd for now as core driver does not support
124          * both power and vlcd hooks.  Note, this is not technically
125          * the correct sequence, but seems to work.  Disclaimer:
126          * this may eventually damage the display.
127          */
128 
129         idp_vlcd(on);
130 }
131 
132 static struct pxafb_mode_info sharp_lm8v31_mode = {
133         .pixclock       = 270000,
134         .xres           = 640,
135         .yres           = 480,
136         .bpp            = 16,
137         .hsync_len      = 1,
138         .left_margin    = 3,
139         .right_margin   = 3,
140         .vsync_len      = 1,
141         .upper_margin   = 0,
142         .lower_margin   = 0,
143         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
144         .cmap_greyscale = 0,
145 };
146 
147 static struct pxafb_mach_info sharp_lm8v31 = {
148         .modes          = &sharp_lm8v31_mode,
149         .num_modes      = 1,
150         .cmap_inverse   = 0,
151         .cmap_static    = 0,
152         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
153                           LCD_AC_BIAS_FREQ(255),
154         .pxafb_backlight_power = &idp_backlight_power,
155         .pxafb_lcd_power = &idp_lcd_power
156 };
157 
158 static struct pxamci_platform_data idp_mci_platform_data = {
159         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
160         .gpio_card_detect       = -1,
161         .gpio_card_ro           = -1,
162         .gpio_power             = -1,
163 };
164 
165 static void __init idp_init(void)
166 {
167         printk("idp_init()\n");
168 
169         pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
170         pxa_set_ffuart_info(NULL);
171         pxa_set_btuart_info(NULL);
172         pxa_set_stuart_info(NULL);
173 
174         platform_device_register(&smc91x_device);
175         //platform_device_register(&mst_audio_device);
176         pxa_set_fb_info(NULL, &sharp_lm8v31);
177         pxa_set_mci_info(&idp_mci_platform_data);
178 }
179 
180 static struct map_desc idp_io_desc[] __initdata = {
181         {
182                 .virtual        =  IDP_COREVOLT_VIRT,
183                 .pfn            = __phys_to_pfn(IDP_COREVOLT_PHYS),
184                 .length         = IDP_COREVOLT_SIZE,
185                 .type           = MT_DEVICE
186         }, {
187                 .virtual        =  IDP_CPLD_VIRT,
188                 .pfn            = __phys_to_pfn(IDP_CPLD_PHYS),
189                 .length         = IDP_CPLD_SIZE,
190                 .type           = MT_DEVICE
191         }
192 };
193 
194 static void __init idp_map_io(void)
195 {
196         pxa25x_map_io();
197         iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
198 }
199 
200 /* LEDs */
201 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
202 struct idp_led {
203         struct led_classdev     cdev;
204         u8                      mask;
205 };
206 
207 /*
208  * The triggers lines up below will only be used if the
209  * LED triggers are compiled in.
210  */
211 static const struct {
212         const char *name;
213         const char *trigger;
214 } idp_leds[] = {
215         { "idp:green", "heartbeat", },
216         { "idp:red", "cpu0", },
217 };
218 
219 static void idp_led_set(struct led_classdev *cdev,
220                 enum led_brightness b)
221 {
222         struct idp_led *led = container_of(cdev,
223                         struct idp_led, cdev);
224         u32 reg = IDP_CPLD_LED_CONTROL;
225 
226         if (b != LED_OFF)
227                 reg &= ~led->mask;
228         else
229                 reg |= led->mask;
230 
231         IDP_CPLD_LED_CONTROL = reg;
232 }
233 
234 static enum led_brightness idp_led_get(struct led_classdev *cdev)
235 {
236         struct idp_led *led = container_of(cdev,
237                         struct idp_led, cdev);
238 
239         return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
240 }
241 
242 static int __init idp_leds_init(void)
243 {
244         int i;
245 
246         if (!machine_is_pxa_idp())
247                 return -ENODEV;
248 
249         for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
250                 struct idp_led *led;
251 
252                 led = kzalloc(sizeof(*led), GFP_KERNEL);
253                 if (!led)
254                         break;
255 
256                 led->cdev.name = idp_leds[i].name;
257                 led->cdev.brightness_set = idp_led_set;
258                 led->cdev.brightness_get = idp_led_get;
259                 led->cdev.default_trigger = idp_leds[i].trigger;
260 
261                 if (i == 0)
262                         led->mask = IDP_HB_LED;
263                 else
264                         led->mask = IDP_BUSY_LED;
265 
266                 if (led_classdev_register(NULL, &led->cdev) < 0) {
267                         kfree(led);
268                         break;
269                 }
270         }
271 
272         return 0;
273 }
274 
275 /*
276  * Since we may have triggers on any subsystem, defer registration
277  * until after subsystem_init.
278  */
279 fs_initcall(idp_leds_init);
280 #endif
281 
282 MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
283         /* Maintainer: Vibren Technologies */
284         .map_io         = idp_map_io,
285         .nr_irqs        = PXA_NR_IRQS,
286         .init_irq       = pxa25x_init_irq,
287         .handle_irq     = pxa25x_handle_irq,
288         .init_time      = pxa_timer_init,
289         .init_machine   = idp_init,
290         .restart        = pxa_restart,
291 MACHINE_END
292 

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