aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/board-zoom-display.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 13:39:14 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 13:39:14 -0500
commitd33a6291c1c577ff2272edab7416a0f7308e1cef (patch)
tree9efd2f6f2fbb0586af72531110acdf9e769285ab /arch/arm/mach-omap2/board-zoom-display.c
parent66dc918d42eaaa9afe42a47d07526765162017a9 (diff)
parentf00117a78341e330eecebdfe74cce345ed068802 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6: (29 commits) video: move SH_MIPI_DSI/SH_LCD_MIPI_DSI to the top of menu fbdev: Implement simple blanking in pseudocolor modes for vt8500lcdfb video: imx: Update the manufacturer's name nuc900fb: don't treat NULL clk as an error s3c2410fb: don't treat NULL clk as an error video: tidy up modedb formatting. video: matroxfb: Correct video option in comments and kernel config help. fbdev: sh_mobile_hdmi: simplify pointer handling fbdev: sh_mobile_hdmi: framebuffer notifiers have to be registered fbdev: sh_mobile_hdmi: add command line option to use the preferred EDID mode OMAP: DSS2: Introduce omap_channel as an omap_dss_device parameter, add new overlay manager. OMAP: DSS2: Use dss_features to handle DISPC bits removed on OMAP4 OMAP: DSS2: LCD2 Channel Changes for DISPC OMAP: DSS2: Change remaining DISPC functions for new omap_channel argument OMAP: DSS2: Introduce omap_channel argument to DISPC functions used by interface drivers OMAP: DSS2: Represent DISPC register defines with channel as parameter OMAP: DSS2: Add dss_features for omap4 and overlay manager related features OMAP: DSS2: Clean up DISPC color mode validation checks OMAP: DSS2: Add back authors of panel-generic.c based drivers OMAP: DSS2: remove generic DPI panel driver duplicated panel drivers ...
Diffstat (limited to 'arch/arm/mach-omap2/board-zoom-display.c')
-rw-r--r--arch/arm/mach-omap2/board-zoom-display.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-zoom-display.c b/arch/arm/mach-omap2/board-zoom-display.c
new file mode 100644
index 000000000000..6bcd43657aed
--- /dev/null
+++ b/arch/arm/mach-omap2/board-zoom-display.c
@@ -0,0 +1,168 @@
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>
17#include <plat/mcspi.h>
18#include <plat/display.h>
19
20#define LCD_PANEL_RESET_GPIO_PROD 96
21#define LCD_PANEL_RESET_GPIO_PILOT 55
22#define LCD_PANEL_QVGA_GPIO 56
23
24static void zoom_lcd_panel_init(void)
25{
26 int ret;
27 unsigned char lcd_panel_reset_gpio;
28
29 lcd_panel_reset_gpio = (omap_rev() > OMAP3430_REV_ES3_0) ?
30 LCD_PANEL_RESET_GPIO_PROD :
31 LCD_PANEL_RESET_GPIO_PILOT;
32
33 ret = gpio_request(lcd_panel_reset_gpio, "lcd reset");
34 if (ret) {
35 pr_err("Failed to get LCD reset GPIO (gpio%d).\n",
36 lcd_panel_reset_gpio);
37 return;
38 }
39 gpio_direction_output(lcd_panel_reset_gpio, 1);
40
41 ret = gpio_request(LCD_PANEL_QVGA_GPIO, "lcd qvga");
42 if (ret) {
43 pr_err("Failed to get LCD_PANEL_QVGA_GPIO (gpio%d).\n",
44 LCD_PANEL_QVGA_GPIO);
45 goto err0;
46 }
47 gpio_direction_output(LCD_PANEL_QVGA_GPIO, 1);
48
49 return;
50err0:
51 gpio_free(lcd_panel_reset_gpio);
52}
53
54static int zoom_panel_enable_lcd(struct omap_dss_device *dssdev)
55{
56 return 0;
57}
58
59static void zoom_panel_disable_lcd(struct omap_dss_device *dssdev)
60{
61}
62
63/*
64 * PWMA/B register offsets (TWL4030_MODULE_PWMA)
65 */
66#define TWL_INTBR_PMBR1 0xD
67#define TWL_INTBR_GPBR1 0xC
68#define TWL_LED_PWMON 0x0
69#define TWL_LED_PWMOFF 0x1
70
71static int zoom_set_bl_intensity(struct omap_dss_device *dssdev, int level)
72{
73 unsigned char c;
74 u8 mux_pwm, enb_pwm;
75
76 if (level > 100)
77 return -1;
78
79 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &mux_pwm, TWL_INTBR_PMBR1);
80 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &enb_pwm, TWL_INTBR_GPBR1);
81
82 if (level == 0) {
83 /* disable pwm1 output and clock */
84 enb_pwm = enb_pwm & 0xF5;
85 /* change pwm1 pin to gpio pin */
86 mux_pwm = mux_pwm & 0xCF;
87 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
88 enb_pwm, TWL_INTBR_GPBR1);
89 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
90 mux_pwm, TWL_INTBR_PMBR1);
91 return 0;
92 }
93
94 if (!((enb_pwm & 0xA) && (mux_pwm & 0x30))) {
95 /* change gpio pin to pwm1 pin */
96 mux_pwm = mux_pwm | 0x30;
97 /* enable pwm1 output and clock*/
98 enb_pwm = enb_pwm | 0x0A;
99 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
100 mux_pwm, TWL_INTBR_PMBR1);
101 twl_i2c_write_u8(TWL4030_MODULE_INTBR,
102 enb_pwm, TWL_INTBR_GPBR1);
103 }
104
105 c = ((50 * (100 - level)) / 100) + 1;
106 twl_i2c_write_u8(TWL4030_MODULE_PWM1, 0x7F, TWL_LED_PWMOFF);
107 twl_i2c_write_u8(TWL4030_MODULE_PWM1, c, TWL_LED_PWMON);
108
109 return 0;
110}
111
112static struct omap_dss_device zoom_lcd_device = {
113 .name = "lcd",
114 .driver_name = "NEC_8048_panel",
115 .type = OMAP_DISPLAY_TYPE_DPI,
116 .phy.dpi.data_lines = 24,
117 .platform_enable = zoom_panel_enable_lcd,
118 .platform_disable = zoom_panel_disable_lcd,
119 .max_backlight_level = 100,
120 .set_backlight = zoom_set_bl_intensity,
121};
122
123static struct omap_dss_device *zoom_dss_devices[] = {
124 &zoom_lcd_device,
125};
126
127static struct omap_dss_board_info zoom_dss_data = {
128 .num_devices = ARRAY_SIZE(zoom_dss_devices),
129 .devices = zoom_dss_devices,
130 .default_device = &zoom_lcd_device,
131};
132
133static struct platform_device zoom_dss_device = {
134 .name = "omapdss",
135 .id = -1,
136 .dev = {
137 .platform_data = &zoom_dss_data,
138 },
139};
140
141static struct omap2_mcspi_device_config dss_lcd_mcspi_config = {
142 .turbo_mode = 1,
143 .single_channel = 1, /* 0: slave, 1: master */
144};
145
146static struct spi_board_info nec_8048_spi_board_info[] __initdata = {
147 [0] = {
148 .modalias = "nec_8048_spi",
149 .bus_num = 1,
150 .chip_select = 2,
151 .max_speed_hz = 375000,
152 .controller_data = &dss_lcd_mcspi_config,
153 },
154};
155
156static struct platform_device *zoom_display_devices[] __initdata = {
157 &zoom_dss_device,
158};
159
160void __init zoom_display_init(void)
161{
162 platform_add_devices(zoom_display_devices,
163 ARRAY_SIZE(zoom_display_devices));
164 spi_register_board_info(nec_8048_spi_board_info,
165 ARRAY_SIZE(nec_8048_spi_board_info));
166 zoom_lcd_panel_init();
167}
168