Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / video / fbdev / mmp / panel / tpo_tj032md01bw.c
1 /*
2  * linux/drivers/video/mmp/panel/tpo_tj032md01bw.c
3  * active panel using spi interface to do init
4  *
5  * Copyright (C) 2012 Marvell Technology Group Ltd.
6  * Authors:  Guoqing Li <ligq@marvell.com>
7  *          Lisa Du <cldu@marvell.com>
8  *          Zhou Zhu <zzhu3@marvell.com>
9  *
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU General Public License as published by the
12  * Free Software Foundation; either version 2 of the License, or (at your
13  * option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful, but WITHOUT
16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
18  * more details.
19  *
20  * You should have received a copy of the GNU General Public License along with
21  * this program.  If not, see <http://www.gnu.org/licenses/>.
22  *
23  */
24
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/kernel.h>
28 #include <linux/errno.h>
29 #include <linux/string.h>
30 #include <linux/delay.h>
31 #include <linux/platform_device.h>
32 #include <linux/err.h>
33 #include <linux/spi/spi.h>
34 #include <video/mmp_disp.h>
35
36 static u16 init[] = {
37         0x0801,
38         0x0800,
39         0x0200,
40         0x0304,
41         0x040e,
42         0x0903,
43         0x0b18,
44         0x0c53,
45         0x0d01,
46         0x0ee0,
47         0x0f01,
48         0x1058,
49         0x201e,
50         0x210a,
51         0x220a,
52         0x231e,
53         0x2400,
54         0x2532,
55         0x2600,
56         0x27ac,
57         0x2904,
58         0x2aa2,
59         0x2b45,
60         0x2c45,
61         0x2d15,
62         0x2e5a,
63         0x2fff,
64         0x306b,
65         0x310d,
66         0x3248,
67         0x3382,
68         0x34bd,
69         0x35e7,
70         0x3618,
71         0x3794,
72         0x3801,
73         0x395d,
74         0x3aae,
75         0x3bff,
76         0x07c9,
77 };
78
79 static u16 poweroff[] = {
80         0x07d9,
81 };
82
83 struct tpohvga_plat_data {
84         void (*plat_onoff)(int status);
85         struct spi_device *spi;
86 };
87
88 static void tpohvga_onoff(struct mmp_panel *panel, int status)
89 {
90         struct tpohvga_plat_data *plat = panel->plat_data;
91         int ret;
92
93         if (status) {
94                 plat->plat_onoff(1);
95
96                 ret = spi_write(plat->spi, init, sizeof(init));
97                 if (ret < 0)
98                         dev_warn(panel->dev, "init cmd failed(%d)\n", ret);
99         } else {
100                 ret = spi_write(plat->spi, poweroff, sizeof(poweroff));
101                 if (ret < 0)
102                         dev_warn(panel->dev, "poweroff cmd failed(%d)\n", ret);
103
104                 plat->plat_onoff(0);
105         }
106 }
107
108 static struct mmp_mode mmp_modes_tpohvga[] = {
109         [0] = {
110                 .pixclock_freq = 10394400,
111                 .refresh = 60,
112                 .xres = 320,
113                 .yres = 480,
114                 .hsync_len = 10,
115                 .left_margin = 15,
116                 .right_margin = 10,
117                 .vsync_len = 2,
118                 .upper_margin = 4,
119                 .lower_margin = 2,
120                 .invert_pixclock = 1,
121                 .pix_fmt_out = PIXFMT_RGB565,
122         },
123 };
124
125 static int tpohvga_get_modelist(struct mmp_panel *panel,
126                 struct mmp_mode **modelist)
127 {
128         *modelist = mmp_modes_tpohvga;
129         return 1;
130 }
131
132 static struct mmp_panel panel_tpohvga = {
133         .name = "tpohvga",
134         .panel_type = PANELTYPE_ACTIVE,
135         .get_modelist = tpohvga_get_modelist,
136         .set_onoff = tpohvga_onoff,
137 };
138
139 static int tpohvga_probe(struct spi_device *spi)
140 {
141         struct mmp_mach_panel_info *mi;
142         int ret;
143         struct tpohvga_plat_data *plat_data;
144
145         /* get configs from platform data */
146         mi = spi->dev.platform_data;
147         if (mi == NULL) {
148                 dev_err(&spi->dev, "%s: no platform data defined\n", __func__);
149                 return -EINVAL;
150         }
151
152         /* setup spi related info */
153         spi->bits_per_word = 16;
154         ret = spi_setup(spi);
155         if (ret < 0) {
156                 dev_err(&spi->dev, "spi setup failed %d", ret);
157                 return ret;
158         }
159
160         plat_data = kzalloc(sizeof(*plat_data), GFP_KERNEL);
161         if (plat_data == NULL)
162                 return -ENOMEM;
163
164         plat_data->spi = spi;
165         plat_data->plat_onoff = mi->plat_set_onoff;
166         panel_tpohvga.plat_data = plat_data;
167         panel_tpohvga.plat_path_name = mi->plat_path_name;
168         panel_tpohvga.dev = &spi->dev;
169
170         mmp_register_panel(&panel_tpohvga);
171
172         return 0;
173 }
174
175 static struct spi_driver panel_tpohvga_driver = {
176         .driver         = {
177                 .name   = "tpo-hvga",
178                 .owner  = THIS_MODULE,
179         },
180         .probe          = tpohvga_probe,
181 };
182 module_spi_driver(panel_tpohvga_driver);
183
184 MODULE_AUTHOR("Lisa Du<cldu@marvell.com>");
185 MODULE_DESCRIPTION("Panel driver for tpohvga");
186 MODULE_LICENSE("GPL");