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a6490335 K |
1 | /* |
2 | * Copyright (C) 2010 Texas Instruments Inc. | |
3 | * | |
4 | * Modified from mach-omap2/board-zoom-peripherals.c | |
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/init.h> | |
13 | #include <linux/platform_device.h> | |
14 | #include <linux/gpio.h> | |
15 | #include <linux/i2c/twl.h> | |
16 | #include <linux/spi/spi.h> | |
2203747c | 17 | #include <linux/platform_data/spi-omap2-mcspi.h> |
a0b38cc4 | 18 | #include <video/omapdss.h> |
e2ed89fc | 19 | #include <mach/board-zoom.h> |
a6490335 | 20 | |
dbc04161 | 21 | #include "common.h" |
4b25408f | 22 | |
a6490335 K |
23 | #define LCD_PANEL_RESET_GPIO_PROD 96 |
24 | #define LCD_PANEL_RESET_GPIO_PILOT 55 | |
25 | #define LCD_PANEL_QVGA_GPIO 56 | |
26 | ||
bc593f5d IG |
27 | static struct gpio zoom_lcd_gpios[] __initdata = { |
28 | { -EINVAL, GPIOF_OUT_INIT_HIGH, "lcd reset" }, | |
29 | { LCD_PANEL_QVGA_GPIO, GPIOF_OUT_INIT_HIGH, "lcd qvga" }, | |
30 | }; | |
31 | ||
89c4705e | 32 | static void __init zoom_lcd_panel_init(void) |
a6490335 | 33 | { |
bc593f5d | 34 | zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ? |
a6490335 K |
35 | LCD_PANEL_RESET_GPIO_PROD : |
36 | LCD_PANEL_RESET_GPIO_PILOT; | |
37 | ||
bc593f5d IG |
38 | if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios))) |
39 | pr_err("%s: Failed to get LCD GPIOs.\n", __func__); | |
a6490335 K |
40 | } |
41 | ||
42 | static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev) | |
43 | { | |
44 | return 0; | |
45 | } | |
46 | ||
47 | static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev) | |
48 | { | |
49 | } | |
50 | ||
51 | /* | |
52 | * PWMA/B register offsets (TWL4030_MODULE_PWMA) | |
53 | */ | |
54 | #define TWL_INTBR_PMBR1 0xD | |
55 | #define TWL_INTBR_GPBR1 0xC | |
56 | #define TWL_LED_PWMON 0x0 | |
57 | #define TWL_LED_PWMOFF 0x1 | |
58 | ||
59 | static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level) | |
60 | { | |
38232f7b | 61 | #ifdef CONFIG_TWL4030_CORE |
a6490335 K |
62 | unsigned char c; |
63 | u8 mux_pwm, enb_pwm; | |
64 | ||
65 | if (level > 100) | |
66 | return -1; | |
67 | ||
68 | twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1); | |
69 | twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1); | |
70 | ||
71 | if (level == 0) { | |
72 | /* disable pwm1 output and clock */ | |
73 | enb_pwm = enb_pwm & 0xF5; | |
74 | /* change pwm1 pin to gpio pin */ | |
75 | mux_pwm = mux_pwm & 0xCF; | |
76 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, | |
77 | enb_pwm, TWL_INTBR_GPBR1); | |
78 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, | |
79 | mux_pwm, TWL_INTBR_PMBR1); | |
80 | return 0; | |
81 | } | |
82 | ||
83 | if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) { | |
84 | /* change gpio pin to pwm1 pin */ | |
85 | mux_pwm = mux_pwm | 0x30; | |
86 | /* enable pwm1 output and clock*/ | |
87 | enb_pwm = enb_pwm | 0x0A; | |
88 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, | |
89 | mux_pwm, TWL_INTBR_PMBR1); | |
90 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, | |
91 | enb_pwm, TWL_INTBR_GPBR1); | |
92 | } | |
93 | ||
94 | c = ((50 * (100 - level)) / 100) + 1; | |
95 | twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF); | |
96 | twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON); | |
38232f7b TL |
97 | #else |
98 | pr_warn("Backlight not enabled\n"); | |
99 | #endif | |
a6490335 K |
100 | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static struct omap_dss_device zoom_lcd_device = { | |
105 | .name = "lcd", | |
106 | .driver_name = "NEC_8048_panel", | |
107 | .type = OMAP_DISPLAY_TYPE_DPI, | |
108 | .phy.dpi.data_lines = 24, | |
109 | .platform_enable = zoom_panel_enable_lcd, | |
110 | .platform_disable = zoom_panel_disable_lcd, | |
111 | .max_backlight_level = 100, | |
112 | .set_backlight = zoom_set_bl_intensity, | |
113 | }; | |
114 | ||
115 | static struct omap_dss_device *zoom_dss_devices[] = { | |
116 | &zoom_lcd_device, | |
117 | }; | |
118 | ||
119 | static struct omap_dss_board_info zoom_dss_data = { | |
120 | .num_devices = ARRAY_SIZE(zoom_dss_devices), | |
121 | .devices = zoom_dss_devices, | |
122 | .default_device = &zoom_lcd_device, | |
123 | }; | |
124 | ||
a6490335 K |
125 | static struct omap2_mcspi_device_config dss_lcd_mcspi_config = { |
126 | .turbo_mode = 1, | |
a6490335 K |
127 | }; |
128 | ||
129 | static struct spi_board_info nec_8048_spi_board_info[] __initdata = { | |
130 | [0] = { | |
131 | .modalias = "nec_8048_spi", | |
132 | .bus_num = 1, | |
133 | .chip_select = 2, | |
134 | .max_speed_hz = 375000, | |
135 | .controller_data = &dss_lcd_mcspi_config, | |
136 | }, | |
137 | }; | |
138 | ||
a6490335 K |
139 | void __init zoom_display_init(void) |
140 | { | |
d5e13227 | 141 | omap_display_init(&zoom_dss_data); |
a6490335 K |
142 | spi_register_board_info(nec_8048_spi_board_info, |
143 | ARRAY_SIZE(nec_8048_spi_board_info)); | |
144 | zoom_lcd_panel_init(); | |
145 | } | |
146 |