Merge branch 'upstream/core' into upstream/xen
[sfrench/cifs-2.6.git] / arch / arm / mach-s3c64xx / mach-smartq.c
1 /*
2  * linux/arch/arm/mach-s3c64xx/mach-smartq.c
3  *
4  * Copyright (C) 2010 Maurus Cuelenaere
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  */
11
12 #include <linux/delay.h>
13 #include <linux/fb.h>
14 #include <linux/gpio.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17 #include <linux/pwm_backlight.h>
18 #include <linux/serial_core.h>
19 #include <linux/usb/gpio_vbus.h>
20
21 #include <asm/mach-types.h>
22 #include <asm/mach/map.h>
23
24 #include <mach/map.h>
25 #include <mach/regs-gpio.h>
26 #include <mach/regs-modem.h>
27
28 #include <plat/clock.h>
29 #include <plat/cpu.h>
30 #include <plat/devs.h>
31 #include <plat/iic.h>
32 #include <plat/gpio-cfg.h>
33 #include <plat/hwmon.h>
34 #include <plat/regs-serial.h>
35 #include <plat/udc-hs.h>
36 #include <plat/usb-control.h>
37 #include <plat/sdhci.h>
38 #include <plat/ts.h>
39
40 #include <video/platform_lcd.h>
41
42 #define UCON S3C2410_UCON_DEFAULT
43 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
44 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
45
46 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
47         [0] = {
48                 .hwport      = 0,
49                 .flags       = 0,
50                 .ucon        = UCON,
51                 .ulcon       = ULCON,
52                 .ufcon       = UFCON,
53         },
54         [1] = {
55                 .hwport      = 1,
56                 .flags       = 0,
57                 .ucon        = UCON,
58                 .ulcon       = ULCON,
59                 .ufcon       = UFCON,
60         },
61         [2] = {
62                 .hwport      = 2,
63                 .flags       = 0,
64                 .ucon        = UCON,
65                 .ulcon       = ULCON,
66                 .ufcon       = UFCON,
67         },
68 };
69
70 static void smartq_usb_host_powercontrol(int port, int to)
71 {
72         pr_debug("%s(%d, %d)\n", __func__, port, to);
73
74         if (port == 0) {
75                 gpio_set_value(S3C64XX_GPL(0), to);
76                 gpio_set_value(S3C64XX_GPL(1), to);
77         }
78 }
79
80 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
81 {
82         struct s3c2410_hcd_info *info = pw;
83
84         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
85                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
86                 s3c2410_usb_report_oc(info, 3);
87         } else {
88                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
89                 s3c2410_usb_report_oc(info, 0);
90         }
91
92         return IRQ_HANDLED;
93 }
94
95 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
96 {
97         int ret;
98
99         /* This isn't present on a SmartQ 5 board */
100         if (machine_is_smartq5())
101                 return;
102
103         if (on) {
104                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
105                                   smartq_usb_host_ocirq, IRQF_DISABLED |
106                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
107                                   "USB host overcurrent", info);
108                 if (ret != 0)
109                         pr_err("failed to request usb oc irq: %d\n", ret);
110         } else {
111                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
112         }
113 }
114
115 static struct s3c2410_hcd_info smartq_usb_host_info = {
116         .port[0]        = {
117                 .flags  = S3C_HCDFLG_USED
118         },
119         .port[1]        = {
120                 .flags  = 0
121         },
122
123         .power_control  = smartq_usb_host_powercontrol,
124         .enable_oc      = smartq_usb_host_enableoc,
125 };
126
127 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
128         .gpio_vbus              = S3C64XX_GPL(9),
129         .gpio_pullup            = -1,
130         .gpio_vbus_inverted     = true,
131 };
132
133 static struct platform_device smartq_usb_otg_vbus_dev = {
134         .name                   = "gpio-vbus",
135         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
136 };
137
138 static int __init smartq_bl_init(struct device *dev)
139 {
140     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
141
142     return 0;
143 }
144
145 static struct platform_pwm_backlight_data smartq_backlight_data = {
146         .pwm_id         = 1,
147         .max_brightness = 1000,
148         .dft_brightness = 600,
149         .pwm_period_ns  = 1000000000 / (1000 * 20),
150         .init           = smartq_bl_init,
151 };
152
153 static struct platform_device smartq_backlight_device = {
154         .name           = "pwm-backlight",
155         .dev            = {
156                 .parent = &s3c_device_timer[1].dev,
157                 .platform_data = &smartq_backlight_data,
158         },
159 };
160
161 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
162         .delay                  = 65535,
163         .presc                  = 99,
164         .oversampling_shift     = 4,
165 };
166
167 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
168         .max_width              = 4,
169         /*.broken_card_detection        = true,*/
170 };
171
172 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
173         /* Battery voltage (?-4.2V) */
174         .in[0] = &(struct s3c_hwmon_chcfg) {
175                 .name           = "smartq:battery-voltage",
176                 .mult           = 3300,
177                 .div            = 2048,
178         },
179         /* Reference voltage (1.2V) */
180         .in[1] = &(struct s3c_hwmon_chcfg) {
181                 .name           = "smartq:reference-voltage",
182                 .mult           = 3300,
183                 .div            = 4096,
184         },
185 };
186
187 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
188 {
189         gpio_direction_output(S3C64XX_GPM(3), power);
190 }
191
192 static struct plat_lcd_data smartq_lcd_power_data = {
193         .set_power      = smartq_lcd_power_set,
194 };
195
196 static struct platform_device smartq_lcd_power_device = {
197         .name                   = "platform-lcd",
198         .dev.parent             = &s3c_device_fb.dev,
199         .dev.platform_data      = &smartq_lcd_power_data,
200 };
201
202
203 static struct platform_device *smartq_devices[] __initdata = {
204         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
205         &s3c_device_hsmmc0,     /* ... then the external SD card */
206         &s3c_device_hsmmc2,
207         &s3c_device_adc,
208         &s3c_device_fb,
209         &s3c_device_hwmon,
210         &s3c_device_i2c0,
211         &s3c_device_ohci,
212         &s3c_device_rtc,
213         &s3c_device_timer[1],
214         &s3c_device_ts,
215         &s3c_device_usb_hsotg,
216         &smartq_backlight_device,
217         &smartq_lcd_power_device,
218         &smartq_usb_otg_vbus_dev,
219 };
220
221 static void __init smartq_lcd_mode_set(void)
222 {
223         u32 tmp;
224
225         /* set the LCD type */
226         tmp = __raw_readl(S3C64XX_SPCON);
227         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
228         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
229         __raw_writel(tmp, S3C64XX_SPCON);
230
231         /* remove the LCD bypass */
232         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
233         tmp &= ~MIFPCON_LCD_BYPASS;
234         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
235 }
236
237 static void smartq_power_off(void)
238 {
239         gpio_direction_output(S3C64XX_GPK(15), 1);
240 }
241
242 static int __init smartq_power_off_init(void)
243 {
244         int ret;
245
246         ret = gpio_request(S3C64XX_GPK(15), "Power control");
247         if (ret < 0) {
248                 pr_err("%s: failed to get GPK15\n", __func__);
249                 return ret;
250         }
251
252         /* leave power on */
253         gpio_direction_output(S3C64XX_GPK(15), 0);
254
255
256         pm_power_off = smartq_power_off;
257
258         return ret;
259 }
260
261 static int __init smartq_usb_host_init(void)
262 {
263         int ret;
264
265         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
266         if (ret < 0) {
267                 pr_err("%s: failed to get GPL0\n", __func__);
268                 return ret;
269         }
270
271         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
272         if (ret < 0) {
273                 pr_err("%s: failed to get GPL1\n", __func__);
274                 goto err;
275         }
276
277         if (!machine_is_smartq5()) {
278                 /* This isn't present on a SmartQ 5 board */
279                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
280                 if (ret < 0) {
281                         pr_err("%s: failed to get GPL10\n", __func__);
282                         goto err2;
283                 }
284         }
285
286         /* turn power off */
287         gpio_direction_output(S3C64XX_GPL(0), 0);
288         gpio_direction_output(S3C64XX_GPL(1), 0);
289         if (!machine_is_smartq5())
290                 gpio_direction_input(S3C64XX_GPL(10));
291
292         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
293
294         return 0;
295
296 err2:
297         gpio_free(S3C64XX_GPL(1));
298 err:
299         gpio_free(S3C64XX_GPL(0));
300         return ret;
301 }
302
303 static int __init smartq_usb_otg_init(void)
304 {
305         clk_xusbxti.rate = 12000000;
306
307         return 0;
308 }
309
310 static int __init smartq_wifi_init(void)
311 {
312         int ret;
313
314         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
315         if (ret < 0) {
316                 pr_err("%s: failed to get GPK1\n", __func__);
317                 return ret;
318         }
319
320         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
321         if (ret < 0) {
322                 pr_err("%s: failed to get GPK2\n", __func__);
323                 gpio_free(S3C64XX_GPK(1));
324                 return ret;
325         }
326
327         /* turn power on */
328         gpio_direction_output(S3C64XX_GPK(1), 1);
329
330         /* reset device */
331         gpio_direction_output(S3C64XX_GPK(2), 0);
332         mdelay(100);
333         gpio_set_value(S3C64XX_GPK(2), 1);
334         gpio_direction_input(S3C64XX_GPK(2));
335
336         return 0;
337 }
338
339 static struct map_desc smartq_iodesc[] __initdata = {};
340 void __init smartq_map_io(void)
341 {
342         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
343         s3c24xx_init_clocks(12000000);
344         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
345
346         smartq_lcd_mode_set();
347 }
348
349 void __init smartq_machine_init(void)
350 {
351         s3c_i2c0_set_platdata(NULL);
352         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
353         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
354         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
355         s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
356
357         WARN_ON(smartq_power_off_init());
358         WARN_ON(smartq_usb_host_init());
359         WARN_ON(smartq_usb_otg_init());
360         WARN_ON(smartq_wifi_init());
361
362         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
363 }