blob: d4683ba5f72182aa47ef94267ff9dc97c446b043 [file] [log] [blame]
Kishore Ya6490332010-11-15 07:09:03 +01001/*
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>
17#include <plat/mcspi.h>
Tomi Valkeinena0b38cc2011-05-11 14:05:07 +030018#include <video/omapdss.h>
Kishore Ya6490332010-11-15 07:09:03 +010019
20#define LCD_PANEL_RESET_GPIO_PROD 96
21#define LCD_PANEL_RESET_GPIO_PILOT 55
22#define LCD_PANEL_QVGA_GPIO 56
23
Igor Grinbergbc593f52011-05-03 18:22:09 +030024static struct gpio zoom_lcd_gpios[] __initdata = {
25 { -EINVAL, GPIOF_OUT_INIT_HIGH, "lcd reset" },
26 { LCD_PANEL_QVGA_GPIO, GPIOF_OUT_INIT_HIGH, "lcd qvga" },
27};
28
Santosh Shilimkar89c47052011-05-30 00:11:45 -070029static void __init zoom_lcd_panel_init(void)
Kishore Ya6490332010-11-15 07:09:03 +010030{
Igor Grinbergbc593f52011-05-03 18:22:09 +030031 zoom_lcd_gpios[0].gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
Kishore Ya6490332010-11-15 07:09:03 +010032 LCD_PANEL_RESET_GPIO_PROD :
33 LCD_PANEL_RESET_GPIO_PILOT;
34
Igor Grinbergbc593f52011-05-03 18:22:09 +030035 if (gpio_request_array(zoom_lcd_gpios, ARRAY_SIZE(zoom_lcd_gpios)))
36 pr_err("%s: Failed to get LCD GPIOs.\n", __func__);
Kishore Ya6490332010-11-15 07:09:03 +010037}
38
39static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
40{
41 return 0;
42}
43
44static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
45{
46}
47
48/*
49 * PWMA/B register offsets (TWL4030_MODULE_PWMA)
50 */
51#define TWL_INTBR_PMBR1 0xD
52#define TWL_INTBR_GPBR1 0xC
53#define TWL_LED_PWMON 0x0
54#define TWL_LED_PWMOFF 0x1
55
56static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
57{
58 unsigned char c;
59 u8 mux_pwm, enb_pwm;
60
61 if (level > 100)
62 return -1;
63
64 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1);
65 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1);
66
67 if (level == 0) {
68 /* disable pwm1 output and clock */
69 enb_pwm = enb_pwm & 0xF5;
70 /* change pwm1 pin to gpio pin */
71 mux_pwm = mux_pwm & 0xCF;
72 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
73 enb_pwm, TWL_INTBR_GPBR1);
74 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
75 mux_pwm, TWL_INTBR_PMBR1);
76 return 0;
77 }
78
79 if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) {
80 /* change gpio pin to pwm1 pin */
81 mux_pwm = mux_pwm | 0x30;
82 /* enable pwm1 output and clock*/
83 enb_pwm = enb_pwm | 0x0A;
84 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
85 mux_pwm, TWL_INTBR_PMBR1);
86 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
87 enb_pwm, TWL_INTBR_GPBR1);
88 }
89
90 c = ((50 * (100 - level)) / 100) + 1;
91 twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF);
92 twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON);
93
94 return 0;
95}
96
97static struct omap_dss_device zoom_lcd_device = {
98 .name = "lcd",
99 .driver_name = "NEC_8048_panel",
100 .type = OMAP_DISPLAY_TYPE_DPI,
101 .phy.dpi.data_lines = 24,
102 .platform_enable = zoom_panel_enable_lcd,
103 .platform_disable = zoom_panel_disable_lcd,
104 .max_backlight_level = 100,
105 .set_backlight = zoom_set_bl_intensity,
106};
107
108static struct omap_dss_device *zoom_dss_devices[] = {
109 &zoom_lcd_device,
110};
111
112static struct omap_dss_board_info zoom_dss_data = {
113 .num_devices = ARRAY_SIZE(zoom_dss_devices),
114 .devices = zoom_dss_devices,
115 .default_device = &zoom_lcd_device,
116};
117
Kishore Ya6490332010-11-15 07:09:03 +0100118static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
119 .turbo_mode = 1,
120 .single_channel = 1, /* 0: slave, 1: master */
121};
122
123static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
124 [0] = {
125 .modalias = "nec_8048_spi",
126 .bus_num = 1,
127 .chip_select = 2,
128 .max_speed_hz = 375000,
129 .controller_data = &dss_lcd_mcspi_config,
130 },
131};
132
Kishore Ya6490332010-11-15 07:09:03 +0100133void __init zoom_display_init(void)
134{
Senthilvadivu Guruswamyd5e13222011-02-22 11:24:50 +0200135 omap_display_init(&zoom_dss_data);
Kishore Ya6490332010-11-15 07:09:03 +0100136 spi_register_board_info(nec_8048_spi_board_info,
137 ARRAY_SIZE(nec_8048_spi_board_info));
138 zoom_lcd_panel_init();
139}
140