drivers/video/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");