root/drivers/video/fbdev/mmp/panel/tpo_tj032md01bw.c

DEFINITIONS

1. tpohvga_onoff
2. tpohvga_get_modelist
3. tpohvga_probe

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * linux/drivers/video/mmp/panel/tpo_tj032md01bw.c
   4  * active panel using spi interface to do init
   5  *
   6  * Copyright (C) 2012 Marvell Technology Group Ltd.
   7  * Authors:  Guoqing Li <ligq@marvell.com>
   8  *          Lisa Du <cldu@marvell.com>
   9  *          Zhou Zhu <zzhu3@marvell.com>
  10  */
  11 
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/kernel.h>
  15 #include <linux/errno.h>
  16 #include <linux/string.h>
  17 #include <linux/delay.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/err.h>
  20 #include <linux/spi/spi.h>
  21 #include <video/mmp_disp.h>
  22 
  23 static u16 init[] = {
  24         0x0801,
  25         0x0800,
  26         0x0200,
  27         0x0304,
  28         0x040e,
  29         0x0903,
  30         0x0b18,
  31         0x0c53,
  32         0x0d01,
  33         0x0ee0,
  34         0x0f01,
  35         0x1058,
  36         0x201e,
  37         0x210a,
  38         0x220a,
  39         0x231e,
  40         0x2400,
  41         0x2532,
  42         0x2600,
  43         0x27ac,
  44         0x2904,
  45         0x2aa2,
  46         0x2b45,
  47         0x2c45,
  48         0x2d15,
  49         0x2e5a,
  50         0x2fff,
  51         0x306b,
  52         0x310d,
  53         0x3248,
  54         0x3382,
  55         0x34bd,
  56         0x35e7,
  57         0x3618,
  58         0x3794,
  59         0x3801,
  60         0x395d,
  61         0x3aae,
  62         0x3bff,
  63         0x07c9,
  64 };
  65 
  66 static u16 poweroff[] = {
  67         0x07d9,
  68 };
  69 
  70 struct tpohvga_plat_data {
  71         void (*plat_onoff)(int status);
  72         struct spi_device *spi;
  73 };
  74 
  75 static void tpohvga_onoff(struct mmp_panel *panel, int status)
  76 {
  77         struct tpohvga_plat_data *plat = panel->plat_data;
  78         int ret;
  79 
  80         if (status) {
  81                 plat->plat_onoff(1);
  82 
  83                 ret = spi_write(plat->spi, init, sizeof(init));
  84                 if (ret < 0)
  85                         dev_warn(panel->dev, "init cmd failed(%d)\n", ret);
  86         } else {
  87                 ret = spi_write(plat->spi, poweroff, sizeof(poweroff));
  88                 if (ret < 0)
  89                         dev_warn(panel->dev, "poweroff cmd failed(%d)\n", ret);
  90 
  91                 plat->plat_onoff(0);
  92         }
  93 }
  94 
  95 static struct mmp_mode mmp_modes_tpohvga[] = {
  96         [0] = {
  97                 .pixclock_freq = 10394400,
  98                 .refresh = 60,
  99                 .xres = 320,
 100                 .yres = 480,
 101                 .hsync_len = 10,
 102                 .left_margin = 15,
 103                 .right_margin = 10,
 104                 .vsync_len = 2,
 105                 .upper_margin = 4,
 106                 .lower_margin = 2,
 107                 .invert_pixclock = 1,
 108                 .pix_fmt_out = PIXFMT_RGB565,
 109         },
 110 };
 111 
 112 static int tpohvga_get_modelist(struct mmp_panel *panel,
 113                 struct mmp_mode **modelist)
 114 {
 115         *modelist = mmp_modes_tpohvga;
 116         return 1;
 117 }
 118 
 119 static struct mmp_panel panel_tpohvga = {
 120         .name = "tpohvga",
 121         .panel_type = PANELTYPE_ACTIVE,
 122         .get_modelist = tpohvga_get_modelist,
 123         .set_onoff = tpohvga_onoff,
 124 };
 125 
 126 static int tpohvga_probe(struct spi_device *spi)
 127 {
 128         struct mmp_mach_panel_info *mi;
 129         int ret;
 130         struct tpohvga_plat_data *plat_data;
 131 
 132         /* get configs from platform data */
 133         mi = spi->dev.platform_data;
 134         if (mi == NULL) {
 135                 dev_err(&spi->dev, "%s: no platform data defined\n", __func__);
 136                 return -EINVAL;
 137         }
 138 
 139         /* setup spi related info */
 140         spi->bits_per_word = 16;
 141         ret = spi_setup(spi);
 142         if (ret < 0) {
 143                 dev_err(&spi->dev, "spi setup failed %d", ret);
 144                 return ret;
 145         }
 146 
 147         plat_data = kzalloc(sizeof(*plat_data), GFP_KERNEL);
 148         if (plat_data == NULL)
 149                 return -ENOMEM;
 150 
 151         plat_data->spi = spi;
 152         plat_data->plat_onoff = mi->plat_set_onoff;
 153         panel_tpohvga.plat_data = plat_data;
 154         panel_tpohvga.plat_path_name = mi->plat_path_name;
 155         panel_tpohvga.dev = &spi->dev;
 156 
 157         mmp_register_panel(&panel_tpohvga);
 158 
 159         return 0;
 160 }
 161 
 162 static struct spi_driver panel_tpohvga_driver = {
 163         .driver         = {
 164                 .name   = "tpo-hvga",
 165         },
 166         .probe          = tpohvga_probe,
 167 };
 168 module_spi_driver(panel_tpohvga_driver);
 169 
 170 MODULE_AUTHOR("Lisa Du<cldu@marvell.com>");
 171 MODULE_DESCRIPTION("Panel driver for tpohvga");
 172 MODULE_LICENSE("GPL");