e014aa749b039e6ef7da7f9d34e7c7f6ea65c9b8
[linux-3.10.git] / arch / arm / mach-ux500 / board-u5500.c
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
14 #include <asm/mach/arch.h>
15 #include <asm/mach-types.h>
16
17 #include <plat/pincfg.h>
18 #include <plat/i2c.h>
19 #include <plat/gpio-nomadik.h>
20
21 #include <mach/hardware.h>
22 #include <mach/devices.h>
23 #include <mach/setup.h>
24
25 #include "pins-db5500.h"
26 #include "devices-db5500.h"
27 #include <linux/led-lm3530.h>
28
29 /*
30  * GPIO
31  */
32
33 static pin_cfg_t u5500_pins[] = {
34         /* I2C */
35         GPIO218_I2C2_SCL        | PIN_INPUT_PULLUP,
36         GPIO219_I2C2_SDA        | PIN_INPUT_PULLUP,
37
38         /* DISPLAY_ENABLE */
39         GPIO226_GPIO        | PIN_OUTPUT_LOW,
40
41         /* Backlight Enbale */
42         GPIO224_GPIO        | PIN_OUTPUT_HIGH,
43 };
44 /*
45  * I2C
46  */
47
48 #define U5500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
49 static struct nmk_i2c_controller u5500_i2c##id##_data = { \
50         /*                              \
51          * slave data setup time, which is      \
52          * 250 ns,100ns,10ns which is 14,6,2    \
53          * respectively for a 48 Mhz    \
54          * i2c clock                    \
55          */                             \
56         .slsu           = _slsu,        \
57         /* Tx FIFO threshold */         \
58         .tft            = _tft,         \
59         /* Rx FIFO threshold */         \
60         .rft            = _rft,         \
61         /* std. mode operation */       \
62         .clk_freq       = clk,          \
63         .sm             = _sm,          \
64 }
65 /*
66  * The board uses TODO <3> i2c controllers, initialize all of
67  * them with slave data setup time of 250 ns,
68  * Tx & Rx FIFO threshold values as 1 and standard
69  * mode of operation
70  */
71
72 U5500_I2C_CONTROLLER(2, 0xe, 1, 1, 400000, I2C_FREQ_MODE_FAST);
73
74 static struct lm3530_platform_data u5500_als_platform_data = {
75         .mode = LM3530_BL_MODE_MANUAL,
76         .als_input_mode = LM3530_INPUT_ALS1,
77         .max_current = LM3530_FS_CURR_26mA,
78         .pwm_pol_hi = true,
79         .als_avrg_time = LM3530_ALS_AVRG_TIME_512ms,
80         .brt_ramp_law = 1,      /* Linear */
81         .brt_ramp_fall = LM3530_RAMP_TIME_8s,
82         .brt_ramp_rise = LM3530_RAMP_TIME_8s,
83         .als1_resistor_sel = LM3530_ALS_IMPD_13_53kOhm,
84         .als2_resistor_sel = LM3530_ALS_IMPD_Z,
85         .als_vmin = 730,        /* mV */
86         .als_vmax = 1020,       /* mV */
87         .brt_val = 0x7F,        /* Max brightness */
88 };
89
90
91 static struct i2c_board_info __initdata u5500_i2c2_devices[] = {
92         {
93                 /* Backlight */
94                 I2C_BOARD_INFO("lm3530-led", 0x36),
95                 .platform_data = &u5500_als_platform_data,
96         },
97 };
98
99 static void __init u5500_i2c_init(void)
100 {
101         db5500_add_i2c2(&u5500_i2c2_data);
102         i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices));
103 }
104 static void __init u5500_uart_init(void)
105 {
106         db5500_add_uart0(NULL);
107         db5500_add_uart1(NULL);
108         db5500_add_uart2(NULL);
109 }
110
111 static void __init u5500_init_machine(void)
112 {
113         u5500_init_devices();
114         nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins));
115         u5500_i2c_init();
116         u5500_sdi_init();
117         u5500_uart_init();
118 }
119
120 MACHINE_START(U5500, "ST-Ericsson U5500 Platform")
121         .atag_offset    = 0x100,
122         .map_io         = u5500_map_io,
123         .init_irq       = ux500_init_irq,
124         .timer          = &ux500_timer,
125         .init_machine   = u5500_init_machine,
126 MACHINE_END