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.h>
18#include <linux/pwm_backlight.h>
19#include <linux/serial_core.h>
20#include <linux/serial_s3c.h>
21#include <linux/spi/spi_gpio.h>
22#include <linux/usb/gpio_vbus.h>
23#include <linux/platform_data/s3c-hsotg.h>
24
25#include <asm/mach-types.h>
26#include <asm/mach/map.h>
27
28#include <mach/map.h>
29#include <mach/regs-gpio.h>
30#include <mach/gpio-samsung.h>
31
32#include <plat/cpu.h>
33#include <plat/devs.h>
34#include <linux/platform_data/i2c-s3c2410.h>
35#include <plat/gpio-cfg.h>
36#include <linux/platform_data/hwmon-s3c.h>
37#include <linux/platform_data/usb-ohci-s3c2410.h>
38#include <plat/sdhci.h>
39#include <linux/platform_data/touchscreen-s3c2410.h>
40
41#include <video/platform_lcd.h>
42#include <plat/samsung-time.h>
43
44#include "common.h"
45#include "regs-modem.h"
46
47#define UCON S3C2410_UCON_DEFAULT
48#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
49#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
50
51static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
52	[0] = {
53		.hwport	     = 0,
54		.flags	     = 0,
55		.ucon	     = UCON,
56		.ulcon	     = ULCON,
57		.ufcon	     = UFCON,
58	},
59	[1] = {
60		.hwport	     = 1,
61		.flags	     = 0,
62		.ucon	     = UCON,
63		.ulcon	     = ULCON,
64		.ufcon	     = UFCON,
65	},
66	[2] = {
67		.hwport	     = 2,
68		.flags	     = 0,
69		.ucon	     = UCON,
70		.ulcon	     = ULCON,
71		.ufcon	     = UFCON,
72	},
73};
74
75static void smartq_usb_host_powercontrol(int port, int to)
76{
77	pr_debug("%s(%d, %d)\n", __func__, port, to);
78
79	if (port == 0) {
80		gpio_set_value(S3C64XX_GPL(0), to);
81		gpio_set_value(S3C64XX_GPL(1), to);
82	}
83}
84
85static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
86{
87	struct s3c2410_hcd_info *info = pw;
88
89	if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
90		pr_debug("%s: over-current irq (oc detected)\n", __func__);
91		s3c2410_usb_report_oc(info, 3);
92	} else {
93		pr_debug("%s: over-current irq (oc cleared)\n", __func__);
94		s3c2410_usb_report_oc(info, 0);
95	}
96
97	return IRQ_HANDLED;
98}
99
100static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
101{
102	int ret;
103
104	/* This isn't present on a SmartQ 5 board */
105	if (machine_is_smartq5())
106		return;
107
108	if (on) {
109		ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
110				  smartq_usb_host_ocirq,
111				  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
112				  "USB host overcurrent", info);
113		if (ret != 0)
114			pr_err("failed to request usb oc irq: %d\n", ret);
115	} else {
116		free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
117	}
118}
119
120static struct s3c2410_hcd_info smartq_usb_host_info = {
121	.port[0]	= {
122		.flags	= S3C_HCDFLG_USED
123	},
124	.port[1]	= {
125		.flags	= 0
126	},
127
128	.power_control	= smartq_usb_host_powercontrol,
129	.enable_oc	= smartq_usb_host_enableoc,
130};
131
132static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
133	.gpio_vbus		= S3C64XX_GPL(9),
134	.gpio_pullup		= -1,
135	.gpio_vbus_inverted	= true,
136};
137
138static struct platform_device smartq_usb_otg_vbus_dev = {
139	.name			= "gpio-vbus",
140	.dev.platform_data	= &smartq_usb_otg_vbus_pdata,
141};
142
143static struct pwm_lookup smartq_pwm_lookup[] = {
144	PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
145		   1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
146};
147
148static int smartq_bl_init(struct device *dev)
149{
150    s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
151
152    return 0;
153}
154
155static struct platform_pwm_backlight_data smartq_backlight_data = {
156	.max_brightness	= 1000,
157	.dft_brightness	= 600,
158	.enable_gpio	= -1,
159	.init		= smartq_bl_init,
160};
161
162static struct platform_device smartq_backlight_device = {
163	.name		= "pwm-backlight",
164	.dev		= {
165		.parent	= &samsung_device_pwm.dev,
166		.platform_data = &smartq_backlight_data,
167	},
168};
169
170static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
171	.delay			= 65535,
172	.presc			= 99,
173	.oversampling_shift	= 4,
174};
175
176static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
177	.max_width		= 4,
178	.cd_type		= S3C_SDHCI_CD_PERMANENT,
179};
180
181static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
182	/* Battery voltage (?-4.2V) */
183	.in[0] = &(struct s3c_hwmon_chcfg) {
184		.name		= "smartq:battery-voltage",
185		.mult		= 3300,
186		.div		= 2048,
187	},
188	/* Reference voltage (1.2V) */
189	.in[1] = &(struct s3c_hwmon_chcfg) {
190		.name		= "smartq:reference-voltage",
191		.mult		= 3300,
192		.div		= 4096,
193	},
194};
195
196static struct dwc2_hsotg_plat smartq_hsotg_pdata;
197
198static int __init smartq_lcd_setup_gpio(void)
199{
200	int ret;
201
202	ret = gpio_request(S3C64XX_GPM(3), "LCD power");
203	if (ret < 0)
204		return ret;
205
206	/* turn power off */
207	gpio_direction_output(S3C64XX_GPM(3), 0);
208
209	return 0;
210}
211
212/* GPM0 -> CS */
213static struct spi_gpio_platform_data smartq_lcd_control = {
214	.sck			= S3C64XX_GPM(1),
215	.mosi			= S3C64XX_GPM(2),
216	.miso			= S3C64XX_GPM(2),
217};
218
219static struct platform_device smartq_lcd_control_device = {
220	.name			= "spi-gpio",
221	.id			= 1,
222	.dev.platform_data	= &smartq_lcd_control,
223};
224
225static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
226{
227	gpio_direction_output(S3C64XX_GPM(3), power);
228}
229
230static struct plat_lcd_data smartq_lcd_power_data = {
231	.set_power	= smartq_lcd_power_set,
232};
233
234static struct platform_device smartq_lcd_power_device = {
235	.name			= "platform-lcd",
236	.dev.parent		= &s3c_device_fb.dev,
237	.dev.platform_data	= &smartq_lcd_power_data,
238};
239
240static struct i2c_board_info smartq_i2c_devs[] __initdata = {
241	{ I2C_BOARD_INFO("wm8987", 0x1a), },
242};
243
244static struct platform_device *smartq_devices[] __initdata = {
245	&s3c_device_hsmmc1,	/* Init iNAND first, ... */
246	&s3c_device_hsmmc0,	/* ... then the external SD card */
247	&s3c_device_hsmmc2,
248	&s3c_device_adc,
249	&s3c_device_fb,
250	&s3c_device_hwmon,
251	&s3c_device_i2c0,
252	&s3c_device_ohci,
253	&s3c_device_rtc,
254	&samsung_device_pwm,
255	&s3c_device_ts,
256	&s3c_device_usb_hsotg,
257	&s3c64xx_device_iis0,
258	&smartq_backlight_device,
259	&smartq_lcd_control_device,
260	&smartq_lcd_power_device,
261	&smartq_usb_otg_vbus_dev,
262};
263
264static void __init smartq_lcd_mode_set(void)
265{
266	u32 tmp;
267
268	/* set the LCD type */
269	tmp = __raw_readl(S3C64XX_SPCON);
270	tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
271	tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
272	__raw_writel(tmp, S3C64XX_SPCON);
273
274	/* remove the LCD bypass */
275	tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
276	tmp &= ~MIFPCON_LCD_BYPASS;
277	__raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
278}
279
280static void smartq_power_off(void)
281{
282	gpio_direction_output(S3C64XX_GPK(15), 1);
283}
284
285static int __init smartq_power_off_init(void)
286{
287	int ret;
288
289	ret = gpio_request(S3C64XX_GPK(15), "Power control");
290	if (ret < 0) {
291		pr_err("%s: failed to get GPK15\n", __func__);
292		return ret;
293	}
294
295	/* leave power on */
296	gpio_direction_output(S3C64XX_GPK(15), 0);
297
298	pm_power_off = smartq_power_off;
299
300	return ret;
301}
302
303static int __init smartq_usb_host_init(void)
304{
305	int ret;
306
307	ret = gpio_request(S3C64XX_GPL(0), "USB power control");
308	if (ret < 0) {
309		pr_err("%s: failed to get GPL0\n", __func__);
310		return ret;
311	}
312
313	ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
314	if (ret < 0) {
315		pr_err("%s: failed to get GPL1\n", __func__);
316		goto err;
317	}
318
319	if (!machine_is_smartq5()) {
320		/* This isn't present on a SmartQ 5 board */
321		ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
322		if (ret < 0) {
323			pr_err("%s: failed to get GPL10\n", __func__);
324			goto err2;
325		}
326	}
327
328	/* turn power off */
329	gpio_direction_output(S3C64XX_GPL(0), 0);
330	gpio_direction_output(S3C64XX_GPL(1), 0);
331	if (!machine_is_smartq5())
332		gpio_direction_input(S3C64XX_GPL(10));
333
334	s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
335
336	return 0;
337
338err2:
339	gpio_free(S3C64XX_GPL(1));
340err:
341	gpio_free(S3C64XX_GPL(0));
342	return ret;
343}
344
345static int __init smartq_wifi_init(void)
346{
347	int ret;
348
349	ret = gpio_request(S3C64XX_GPK(1), "wifi control");
350	if (ret < 0) {
351		pr_err("%s: failed to get GPK1\n", __func__);
352		return ret;
353	}
354
355	ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
356	if (ret < 0) {
357		pr_err("%s: failed to get GPK2\n", __func__);
358		gpio_free(S3C64XX_GPK(1));
359		return ret;
360	}
361
362	/* turn power on */
363	gpio_direction_output(S3C64XX_GPK(1), 1);
364
365	/* reset device */
366	gpio_direction_output(S3C64XX_GPK(2), 0);
367	mdelay(100);
368	gpio_set_value(S3C64XX_GPK(2), 1);
369	gpio_direction_input(S3C64XX_GPK(2));
370
371	return 0;
372}
373
374static struct map_desc smartq_iodesc[] __initdata = {};
375void __init smartq_map_io(void)
376{
377	s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
378	s3c64xx_set_xtal_freq(12000000);
379	s3c64xx_set_xusbxti_freq(12000000);
380	s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
381	samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
382
383	smartq_lcd_mode_set();
384}
385
386void __init smartq_machine_init(void)
387{
388	s3c_i2c0_set_platdata(NULL);
389	dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
390	s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
391	s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
392	s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
393	s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
394
395	i2c_register_board_info(0, smartq_i2c_devs,
396				ARRAY_SIZE(smartq_i2c_devs));
397
398	WARN_ON(smartq_lcd_setup_gpio());
399	WARN_ON(smartq_power_off_init());
400	WARN_ON(smartq_usb_host_init());
401	WARN_ON(smartq_wifi_init());
402
403	pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
404	platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
405}
406