1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * LCD panel support for the TI OMAP OSK board
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2004 Nokia Corporation
6*4882a593Smuzhiyun * Author: Imre Deak <imre.deak@nokia.com>
7*4882a593Smuzhiyun * Adapted for OSK by <dirk.behme@de.bosch.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun #include <linux/platform_device.h>
12*4882a593Smuzhiyun #include <linux/gpio.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <mach/hardware.h>
15*4882a593Smuzhiyun #include <mach/mux.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include "omapfb.h"
18*4882a593Smuzhiyun
osk_panel_enable(struct lcd_panel * panel)19*4882a593Smuzhiyun static int osk_panel_enable(struct lcd_panel *panel)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun /* configure PWL pin */
22*4882a593Smuzhiyun omap_cfg_reg(PWL);
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun /* Enable PWL unit */
25*4882a593Smuzhiyun omap_writeb(0x01, OMAP_PWL_CLK_ENABLE);
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /* Set PWL level */
28*4882a593Smuzhiyun omap_writeb(0xFF, OMAP_PWL_ENABLE);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun /* set GPIO2 high (lcd power enabled) */
31*4882a593Smuzhiyun gpio_set_value(2, 1);
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun return 0;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
osk_panel_disable(struct lcd_panel * panel)36*4882a593Smuzhiyun static void osk_panel_disable(struct lcd_panel *panel)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun /* Set PWL level to zero */
39*4882a593Smuzhiyun omap_writeb(0x00, OMAP_PWL_ENABLE);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun /* Disable PWL unit */
42*4882a593Smuzhiyun omap_writeb(0x00, OMAP_PWL_CLK_ENABLE);
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun /* set GPIO2 low */
45*4882a593Smuzhiyun gpio_set_value(2, 0);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun static struct lcd_panel osk_panel = {
49*4882a593Smuzhiyun .name = "osk",
50*4882a593Smuzhiyun .config = OMAP_LCDC_PANEL_TFT,
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun .bpp = 16,
53*4882a593Smuzhiyun .data_lines = 16,
54*4882a593Smuzhiyun .x_res = 240,
55*4882a593Smuzhiyun .y_res = 320,
56*4882a593Smuzhiyun .pixel_clock = 12500,
57*4882a593Smuzhiyun .hsw = 40,
58*4882a593Smuzhiyun .hfp = 40,
59*4882a593Smuzhiyun .hbp = 72,
60*4882a593Smuzhiyun .vsw = 1,
61*4882a593Smuzhiyun .vfp = 1,
62*4882a593Smuzhiyun .vbp = 0,
63*4882a593Smuzhiyun .pcd = 12,
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun .enable = osk_panel_enable,
66*4882a593Smuzhiyun .disable = osk_panel_disable,
67*4882a593Smuzhiyun };
68*4882a593Smuzhiyun
osk_panel_probe(struct platform_device * pdev)69*4882a593Smuzhiyun static int osk_panel_probe(struct platform_device *pdev)
70*4882a593Smuzhiyun {
71*4882a593Smuzhiyun omapfb_register_panel(&osk_panel);
72*4882a593Smuzhiyun return 0;
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun static struct platform_driver osk_panel_driver = {
76*4882a593Smuzhiyun .probe = osk_panel_probe,
77*4882a593Smuzhiyun .driver = {
78*4882a593Smuzhiyun .name = "lcd_osk",
79*4882a593Smuzhiyun },
80*4882a593Smuzhiyun };
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun module_platform_driver(osk_panel_driver);
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun MODULE_AUTHOR("Imre Deak");
85*4882a593Smuzhiyun MODULE_DESCRIPTION("LCD panel support for the TI OMAP OSK board");
86*4882a593Smuzhiyun MODULE_LICENSE("GPL");
87