1 /* linux/arch/arm/mach-s5p64x0/mach-smdk6440.c
2 *
3 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
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 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/timer.h>
16 #include <linux/delay.h>
17 #include <linux/init.h>
18 #include <linux/i2c.h>
19 #include <linux/serial_core.h>
20 #include <linux/platform_device.h>
21 #include <linux/io.h>
22 #include <linux/module.h>
23 #include <linux/clk.h>
24 #include <linux/gpio.h>
25 #include <linux/pwm_backlight.h>
26
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/irq.h>
30 #include <asm/mach-types.h>
31
32 #include <mach/hardware.h>
33 #include <mach/map.h>
34 #include <mach/regs-clock.h>
35 #include <mach/i2c.h>
36 #include <mach/regs-gpio.h>
37
38 #include <plat/regs-serial.h>
39 #include <plat/gpio-cfg.h>
40 #include <plat/s5p6440.h>
41 #include <plat/clock.h>
42 #include <plat/devs.h>
43 #include <plat/cpu.h>
44 #include <plat/iic.h>
45 #include <plat/pll.h>
46 #include <plat/adc.h>
47 #include <plat/ts.h>
48 #include <plat/s5p-time.h>
49
50 #define SMDK6440_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
51 S3C2410_UCON_RXILEVEL | \
52 S3C2410_UCON_TXIRQMODE | \
53 S3C2410_UCON_RXIRQMODE | \
54 S3C2410_UCON_RXFIFO_TOI | \
55 S3C2443_UCON_RXERR_IRQEN)
56
57 #define SMDK6440_ULCON_DEFAULT S3C2410_LCON_CS8
58
59 #define SMDK6440_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \
60 S3C2440_UFCON_TXTRIG16 | \
61 S3C2410_UFCON_RXTRIG8)
62
63 static struct s3c2410_uartcfg smdk6440_uartcfgs[] __initdata = {
64 [0] = {
65 .hwport = 0,
66 .flags = 0,
67 .ucon = SMDK6440_UCON_DEFAULT,
68 .ulcon = SMDK6440_ULCON_DEFAULT,
69 .ufcon = SMDK6440_UFCON_DEFAULT,
70 },
71 [1] = {
72 .hwport = 1,
73 .flags = 0,
74 .ucon = SMDK6440_UCON_DEFAULT,
75 .ulcon = SMDK6440_ULCON_DEFAULT,
76 .ufcon = SMDK6440_UFCON_DEFAULT,
77 },
78 [2] = {
79 .hwport = 2,
80 .flags = 0,
81 .ucon = SMDK6440_UCON_DEFAULT,
82 .ulcon = SMDK6440_ULCON_DEFAULT,
83 .ufcon = SMDK6440_UFCON_DEFAULT,
84 },
85 [3] = {
86 .hwport = 3,
87 .flags = 0,
88 .ucon = SMDK6440_UCON_DEFAULT,
89 .ulcon = SMDK6440_ULCON_DEFAULT,
90 .ufcon = SMDK6440_UFCON_DEFAULT,
91 },
92 };
93
smdk6440_backlight_init(struct device * dev)94 static int smdk6440_backlight_init(struct device *dev)
95 {
96 int ret;
97
98 ret = gpio_request(S5P6440_GPF(15), "Backlight");
99 if (ret) {
100 printk(KERN_ERR "failed to request GPF for PWM-OUT1\n");
101 return ret;
102 }
103
104 /* Configure GPIO pin with S5P6440_GPF15_PWM_TOUT1 */
105 s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_SFN(2));
106
107 return 0;
108 }
109
smdk6440_backlight_exit(struct device * dev)110 static void smdk6440_backlight_exit(struct device *dev)
111 {
112 s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_OUTPUT);
113 gpio_free(S5P6440_GPF(15));
114 }
115
116 static struct platform_pwm_backlight_data smdk6440_backlight_data = {
117 .pwm_id = 1,
118 .max_brightness = 255,
119 .dft_brightness = 255,
120 .pwm_period_ns = 78770,
121 .init = smdk6440_backlight_init,
122 .exit = smdk6440_backlight_exit,
123 };
124
125 static struct platform_device smdk6440_backlight_device = {
126 .name = "pwm-backlight",
127 .dev = {
128 .parent = &s3c_device_timer[1].dev,
129 .platform_data = &smdk6440_backlight_data,
130 },
131 };
132
133 static struct platform_device *smdk6440_devices[] __initdata = {
134 &s3c_device_adc,
135 &s3c_device_rtc,
136 &s3c_device_i2c0,
137 &s3c_device_i2c1,
138 &s3c_device_ts,
139 &s3c_device_wdt,
140 &samsung_asoc_dma,
141 &s5p6440_device_iis,
142 &s3c_device_timer[1],
143 &smdk6440_backlight_device,
144 };
145
146 static struct s3c2410_platform_i2c s5p6440_i2c0_data __initdata = {
147 .flags = 0,
148 .slave_addr = 0x10,
149 .frequency = 100*1000,
150 .sda_delay = 100,
151 .cfg_gpio = s5p6440_i2c0_cfg_gpio,
152 };
153
154 static struct s3c2410_platform_i2c s5p6440_i2c1_data __initdata = {
155 .flags = 0,
156 .bus_num = 1,
157 .slave_addr = 0x10,
158 .frequency = 100*1000,
159 .sda_delay = 100,
160 .cfg_gpio = s5p6440_i2c1_cfg_gpio,
161 };
162
163 static struct i2c_board_info smdk6440_i2c_devs0[] __initdata = {
164 { I2C_BOARD_INFO("24c08", 0x50), },
165 { I2C_BOARD_INFO("wm8580", 0x1b), },
166 };
167
168 static struct i2c_board_info smdk6440_i2c_devs1[] __initdata = {
169 /* To be populated */
170 };
171
172 static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
173 .delay = 10000,
174 .presc = 49,
175 .oversampling_shift = 2,
176 };
177
smdk6440_map_io(void)178 static void __init smdk6440_map_io(void)
179 {
180 s5p_init_io(NULL, 0, S5P64X0_SYS_ID);
181 s3c24xx_init_clocks(12000000);
182 s3c24xx_init_uarts(smdk6440_uartcfgs, ARRAY_SIZE(smdk6440_uartcfgs));
183 s5p_set_timer_source(S5P_PWM3, S5P_PWM4);
184 }
185
smdk6440_machine_init(void)186 static void __init smdk6440_machine_init(void)
187 {
188 s3c24xx_ts_set_platdata(&s3c_ts_platform);
189
190 s3c_i2c0_set_platdata(&s5p6440_i2c0_data);
191 s3c_i2c1_set_platdata(&s5p6440_i2c1_data);
192 i2c_register_board_info(0, smdk6440_i2c_devs0,
193 ARRAY_SIZE(smdk6440_i2c_devs0));
194 i2c_register_board_info(1, smdk6440_i2c_devs1,
195 ARRAY_SIZE(smdk6440_i2c_devs1));
196
197 platform_add_devices(smdk6440_devices, ARRAY_SIZE(smdk6440_devices));
198 }
199
200 MACHINE_START(SMDK6440, "SMDK6440")
201 /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
202 .boot_params = S5P64X0_PA_SDRAM + 0x100,
203
204 .init_irq = s5p6440_init_irq,
205 .map_io = smdk6440_map_io,
206 .init_machine = smdk6440_machine_init,
207 .timer = &s5p_timer,
208 MACHINE_END
209