1 /*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
5 * License terms: GNU General Public License (GPL) version 2
6 */
7
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/amba/bus.h>
11 #include <linux/irq.h>
12 #include <linux/i2c.h>
13 #include <linux/mfd/abx500/ab5500.h>
14
15 #include <asm/hardware/gic.h>
16 #include <asm/mach/arch.h>
17 #include <asm/mach-types.h>
18
19 #include <plat/pincfg.h>
20 #include <plat/i2c.h>
21 #include <plat/gpio-nomadik.h>
22
23 #include <mach/hardware.h>
24 #include <mach/devices.h>
25 #include <mach/setup.h>
26
27 #include "pins-db5500.h"
28 #include "devices-db5500.h"
29 #include <linux/led-lm3530.h>
30
31 /*
32 * GPIO
33 */
34
35 static pin_cfg_t u5500_pins[] = {
36 /* I2C */
37 GPIO218_I2C2_SCL | PIN_INPUT_PULLUP,
38 GPIO219_I2C2_SDA | PIN_INPUT_PULLUP,
39
40 /* DISPLAY_ENABLE */
41 GPIO226_GPIO | PIN_OUTPUT_LOW,
42
43 /* Backlight Enbale */
44 GPIO224_GPIO | PIN_OUTPUT_HIGH,
45 };
46 /*
47 * I2C
48 */
49
50 #define U5500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
51 static struct nmk_i2c_controller u5500_i2c##id##_data = { \
52 /* \
53 * slave data setup time, which is \
54 * 250 ns,100ns,10ns which is 14,6,2 \
55 * respectively for a 48 Mhz \
56 * i2c clock \
57 */ \
58 .slsu = _slsu, \
59 /* Tx FIFO threshold */ \
60 .tft = _tft, \
61 /* Rx FIFO threshold */ \
62 .rft = _rft, \
63 /* std. mode operation */ \
64 .clk_freq = clk, \
65 .sm = _sm, \
66 }
67 /*
68 * The board uses TODO <3> i2c controllers, initialize all of
69 * them with slave data setup time of 250 ns,
70 * Tx & Rx FIFO threshold values as 1 and standard
71 * mode of operation
72 */
73
74 U5500_I2C_CONTROLLER(2, 0xe, 1, 1, 400000, I2C_FREQ_MODE_FAST);
75
76 static struct lm3530_platform_data u5500_als_platform_data = {
77 .mode = LM3530_BL_MODE_MANUAL,
78 .als_input_mode = LM3530_INPUT_ALS1,
79 .max_current = LM3530_FS_CURR_26mA,
80 .pwm_pol_hi = true,
81 .als_avrg_time = LM3530_ALS_AVRG_TIME_512ms,
82 .brt_ramp_law = 1, /* Linear */
83 .brt_ramp_fall = LM3530_RAMP_TIME_8s,
84 .brt_ramp_rise = LM3530_RAMP_TIME_8s,
85 .als1_resistor_sel = LM3530_ALS_IMPD_13_53kOhm,
86 .als2_resistor_sel = LM3530_ALS_IMPD_Z,
87 .als_vmin = 730, /* mV */
88 .als_vmax = 1020, /* mV */
89 .brt_val = 0x7F, /* Max brightness */
90 };
91
92 static struct i2c_board_info __initdata u5500_i2c2_devices[] = {
93 {
94 /* Backlight */
95 I2C_BOARD_INFO("lm3530-led", 0x36),
96 .platform_data = &u5500_als_platform_data,
97 },
98 };
99
u5500_i2c_init(void)100 static void __init u5500_i2c_init(void)
101 {
102 db5500_add_i2c2(&u5500_i2c2_data);
103 i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices));
104 }
105
106 static struct ab5500_platform_data ab5500_plf_data = {
107 .irq = {
108 .base = 0,
109 .count = 0,
110 },
111 .init_settings = NULL,
112 .init_settings_sz = 0,
113 .pm_power_off = false,
114 };
115
116 static struct platform_device ab5500_device = {
117 .name = "ab5500-core",
118 .id = 0,
119 .dev = {
120 .platform_data = &ab5500_plf_data,
121 },
122 .num_resources = 0,
123 };
124
125 static struct platform_device *u5500_platform_devices[] __initdata = {
126 &ab5500_device,
127 };
128
u5500_uart_init(void)129 static void __init u5500_uart_init(void)
130 {
131 db5500_add_uart0(NULL);
132 db5500_add_uart1(NULL);
133 db5500_add_uart2(NULL);
134 }
135
u5500_init_machine(void)136 static void __init u5500_init_machine(void)
137 {
138 u5500_init_devices();
139 nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins));
140 u5500_i2c_init();
141 u5500_sdi_init();
142 u5500_uart_init();
143
144 platform_add_devices(u5500_platform_devices,
145 ARRAY_SIZE(u5500_platform_devices));
146 }
147
148 MACHINE_START(U5500, "ST-Ericsson U5500 Platform")
149 .atag_offset = 0x100,
150 .map_io = u5500_map_io,
151 .init_irq = ux500_init_irq,
152 .timer = &ux500_timer,
153 .handle_irq = gic_handle_irq,
154 .init_machine = u5500_init_machine,
155 MACHINE_END
156