tpo_tj032md01bw.c

  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
 23static 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
 66static u16 poweroff[] = {
 67	0x07d9,
 68};
 69
 70struct tpohvga_plat_data {
 71	void (*plat_onoff)(int status);
 72	struct spi_device *spi;
 73};
 74
 75static 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
 95static 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
112static int tpohvga_get_modelist(struct mmp_panel *panel,
113		struct mmp_mode **modelist)
114{
115	*modelist = mmp_modes_tpohvga;
116	return 1;
117}
118
119static 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
126static 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
162static struct spi_driver panel_tpohvga_driver = {
163	.driver		= {
164		.name	= "tpo-hvga",
165	},
166	.probe		= tpohvga_probe,
167};
168module_spi_driver(panel_tpohvga_driver);
169
170MODULE_AUTHOR("Lisa Du<cldu@marvell.com>");
171MODULE_DESCRIPTION("Panel driver for tpohvga");
172MODULE_LICENSE("GPL");