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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
40#include "generic.h"
41#include "devices.h"
42
43/* TODO:
44 * - add pxa2xx_audio_ops_t device structure
45 * - Ethernet interrupt
46 */
47
48static unsigned long idp_pin_config[] __initdata = {
49 /* LCD */
50 GPIOxx_LCD_DSTN_16BPP,
51
52 /* BTUART */
53 GPIO42_BTUART_RXD,
54 GPIO43_BTUART_TXD,
55 GPIO44_BTUART_CTS,
56 GPIO45_BTUART_RTS,
57
58 /* STUART */
59 GPIO46_STUART_RXD,
60 GPIO47_STUART_TXD,
61
62 /* MMC */
63 GPIO6_MMC_CLK,
64 GPIO8_MMC_CS0,
65
66 /* Ethernet */
67 GPIO33_nCS_5, /* Ethernet CS */
68 GPIO4_GPIO, /* Ethernet IRQ */
69};
70
71static struct resource smc91x_resources[] = {
72 [0] = {
73 .start = (IDP_ETH_PHYS + 0x300),
74 .end = (IDP_ETH_PHYS + 0xfffff),
75 .flags = IORESOURCE_MEM,
76 },
77 [1] = {
78 .start = PXA_GPIO_TO_IRQ(4),
79 .end = PXA_GPIO_TO_IRQ(4),
80 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
81 }
82};
83
84static struct platform_device smc91x_device = {
85 .name = "smc91x",
86 .id = 0,
87 .num_resources = ARRAY_SIZE(smc91x_resources),
88 .resource = smc91x_resources,
89};
90
91static void idp_backlight_power(int on)
92{
93 if (on) {
94 IDP_CPLD_LCD |= (1<<1);
95 } else {
96 IDP_CPLD_LCD &= ~(1<<1);
97 }
98}
99
100static void idp_vlcd(int on)
101{
102 if (on) {
103 IDP_CPLD_LCD |= (1<<2);
104 } else {
105 IDP_CPLD_LCD &= ~(1<<2);
106 }
107}
108
109static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
110{
111 if (on) {
112 IDP_CPLD_LCD |= (1<<0);
113 } else {
114 IDP_CPLD_LCD &= ~(1<<0);
115 }
116
117 /* call idp_vlcd for now as core driver does not support
118 * both power and vlcd hooks. Note, this is not technically
119 * the correct sequence, but seems to work. Disclaimer:
120 * this may eventually damage the display.
121 */
122
123 idp_vlcd(on);
124}
125
126static struct pxafb_mode_info sharp_lm8v31_mode = {
127 .pixclock = 270000,
128 .xres = 640,
129 .yres = 480,
130 .bpp = 16,
131 .hsync_len = 1,
132 .left_margin = 3,
133 .right_margin = 3,
134 .vsync_len = 1,
135 .upper_margin = 0,
136 .lower_margin = 0,
137 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
138 .cmap_greyscale = 0,
139};
140
141static struct pxafb_mach_info sharp_lm8v31 = {
142 .modes = &sharp_lm8v31_mode,
143 .num_modes = 1,
144 .cmap_inverse = 0,
145 .cmap_static = 0,
146 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
147 LCD_AC_BIAS_FREQ(255),
148 .pxafb_backlight_power = &idp_backlight_power,
149 .pxafb_lcd_power = &idp_lcd_power
150};
151
152static struct pxamci_platform_data idp_mci_platform_data = {
153 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
154 .gpio_card_detect = -1,
155 .gpio_card_ro = -1,
156 .gpio_power = -1,
157};
158
159static 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
174static 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
188static 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)
196struct 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 */
205static const struct {
206 const char *name;
207 const char *trigger;
208} idp_leds[] = {
209 { "idp:green", "heartbeat", },
210 { "idp:red", "cpu0", },
211};
212
213static 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
228static 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
236static 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 */
273fs_initcall(idp_leds_init);
274#endif
275
276MACHINE_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,
285MACHINE_END