394 lines
9.3 KiB
C
394 lines
9.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* NEC NL8048HL11 Panel driver
|
|
*
|
|
* Copyright (C) 2010 Texas Instruments Inc.
|
|
* Author: Erik Gilling <konkers@android.com>
|
|
* Converted to new DSS device model: Tomi Valkeinen <tomi.valkeinen@ti.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/of_gpio.h>
|
|
|
|
#include <video/omapfb_dss.h>
|
|
|
|
struct panel_drv_data {
|
|
struct omap_dss_device dssdev;
|
|
struct omap_dss_device *in;
|
|
|
|
struct omap_video_timings videomode;
|
|
|
|
int data_lines;
|
|
|
|
int res_gpio;
|
|
int qvga_gpio;
|
|
|
|
struct spi_device *spi;
|
|
};
|
|
|
|
#define LCD_XRES 800
|
|
#define LCD_YRES 480
|
|
/*
|
|
* NEC PIX Clock Ratings
|
|
* MIN:21.8MHz TYP:23.8MHz MAX:25.7MHz
|
|
*/
|
|
#define LCD_PIXEL_CLOCK 23800000
|
|
|
|
static const struct {
|
|
unsigned char addr;
|
|
unsigned char dat;
|
|
} nec_8048_init_seq[] = {
|
|
{ 3, 0x01 }, { 0, 0x00 }, { 1, 0x01 }, { 4, 0x00 }, { 5, 0x14 },
|
|
{ 6, 0x24 }, { 16, 0xD7 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x55 },
|
|
{ 20, 0x01 }, { 21, 0x70 }, { 22, 0x1E }, { 23, 0x25 }, { 24, 0x25 },
|
|
{ 25, 0x02 }, { 26, 0x02 }, { 27, 0xA0 }, { 32, 0x2F }, { 33, 0x0F },
|
|
{ 34, 0x0F }, { 35, 0x0F }, { 36, 0x0F }, { 37, 0x0F }, { 38, 0x0F },
|
|
{ 39, 0x00 }, { 40, 0x02 }, { 41, 0x02 }, { 42, 0x02 }, { 43, 0x0F },
|
|
{ 44, 0x0F }, { 45, 0x0F }, { 46, 0x0F }, { 47, 0x0F }, { 48, 0x0F },
|
|
{ 49, 0x0F }, { 50, 0x00 }, { 51, 0x02 }, { 52, 0x02 }, { 53, 0x02 },
|
|
{ 80, 0x0C }, { 83, 0x42 }, { 84, 0x42 }, { 85, 0x41 }, { 86, 0x14 },
|
|
{ 89, 0x88 }, { 90, 0x01 }, { 91, 0x00 }, { 92, 0x02 }, { 93, 0x0C },
|
|
{ 94, 0x1C }, { 95, 0x27 }, { 98, 0x49 }, { 99, 0x27 }, { 102, 0x76 },
|
|
{ 103, 0x27 }, { 112, 0x01 }, { 113, 0x0E }, { 114, 0x02 },
|
|
{ 115, 0x0C }, { 118, 0x0C }, { 121, 0x30 }, { 130, 0x00 },
|
|
{ 131, 0x00 }, { 132, 0xFC }, { 134, 0x00 }, { 136, 0x00 },
|
|
{ 138, 0x00 }, { 139, 0x00 }, { 140, 0x00 }, { 141, 0xFC },
|
|
{ 143, 0x00 }, { 145, 0x00 }, { 147, 0x00 }, { 148, 0x00 },
|
|
{ 149, 0x00 }, { 150, 0xFC }, { 152, 0x00 }, { 154, 0x00 },
|
|
{ 156, 0x00 }, { 157, 0x00 }, { 2, 0x00 },
|
|
};
|
|
|
|
static const struct omap_video_timings nec_8048_panel_timings = {
|
|
.x_res = LCD_XRES,
|
|
.y_res = LCD_YRES,
|
|
.pixelclock = LCD_PIXEL_CLOCK,
|
|
.hfp = 6,
|
|
.hsw = 1,
|
|
.hbp = 4,
|
|
.vfp = 3,
|
|
.vsw = 1,
|
|
.vbp = 4,
|
|
|
|
.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
|
|
.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
|
|
.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
|
|
.de_level = OMAPDSS_SIG_ACTIVE_HIGH,
|
|
.sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
|
|
};
|
|
|
|
#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
|
|
|
|
static int nec_8048_spi_send(struct spi_device *spi, unsigned char reg_addr,
|
|
unsigned char reg_data)
|
|
{
|
|
int ret = 0;
|
|
unsigned int cmd = 0, data = 0;
|
|
|
|
cmd = 0x0000 | reg_addr; /* register address write */
|
|
data = 0x0100 | reg_data; /* register data write */
|
|
data = (cmd << 16) | data;
|
|
|
|
ret = spi_write(spi, (unsigned char *)&data, 4);
|
|
if (ret)
|
|
pr_err("error in spi_write %x\n", data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int init_nec_8048_wvga_lcd(struct spi_device *spi)
|
|
{
|
|
unsigned int i;
|
|
/* Initialization Sequence */
|
|
/* nec_8048_spi_send(spi, REG, VAL) */
|
|
for (i = 0; i < (ARRAY_SIZE(nec_8048_init_seq) - 1); i++)
|
|
nec_8048_spi_send(spi, nec_8048_init_seq[i].addr,
|
|
nec_8048_init_seq[i].dat);
|
|
udelay(20);
|
|
nec_8048_spi_send(spi, nec_8048_init_seq[i].addr,
|
|
nec_8048_init_seq[i].dat);
|
|
return 0;
|
|
}
|
|
|
|
static int nec_8048_connect(struct omap_dss_device *dssdev)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
if (omapdss_device_is_connected(dssdev))
|
|
return 0;
|
|
|
|
return in->ops.dpi->connect(in, dssdev);
|
|
}
|
|
|
|
static void nec_8048_disconnect(struct omap_dss_device *dssdev)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
if (!omapdss_device_is_connected(dssdev))
|
|
return;
|
|
|
|
in->ops.dpi->disconnect(in, dssdev);
|
|
}
|
|
|
|
static int nec_8048_enable(struct omap_dss_device *dssdev)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
int r;
|
|
|
|
if (!omapdss_device_is_connected(dssdev))
|
|
return -ENODEV;
|
|
|
|
if (omapdss_device_is_enabled(dssdev))
|
|
return 0;
|
|
|
|
if (ddata->data_lines)
|
|
in->ops.dpi->set_data_lines(in, ddata->data_lines);
|
|
in->ops.dpi->set_timings(in, &ddata->videomode);
|
|
|
|
r = in->ops.dpi->enable(in);
|
|
if (r)
|
|
return r;
|
|
|
|
if (gpio_is_valid(ddata->res_gpio))
|
|
gpio_set_value_cansleep(ddata->res_gpio, 1);
|
|
|
|
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void nec_8048_disable(struct omap_dss_device *dssdev)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
if (!omapdss_device_is_enabled(dssdev))
|
|
return;
|
|
|
|
if (gpio_is_valid(ddata->res_gpio))
|
|
gpio_set_value_cansleep(ddata->res_gpio, 0);
|
|
|
|
in->ops.dpi->disable(in);
|
|
|
|
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
|
|
}
|
|
|
|
static void nec_8048_set_timings(struct omap_dss_device *dssdev,
|
|
struct omap_video_timings *timings)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
ddata->videomode = *timings;
|
|
dssdev->panel.timings = *timings;
|
|
|
|
in->ops.dpi->set_timings(in, timings);
|
|
}
|
|
|
|
static void nec_8048_get_timings(struct omap_dss_device *dssdev,
|
|
struct omap_video_timings *timings)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
|
|
*timings = ddata->videomode;
|
|
}
|
|
|
|
static int nec_8048_check_timings(struct omap_dss_device *dssdev,
|
|
struct omap_video_timings *timings)
|
|
{
|
|
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
return in->ops.dpi->check_timings(in, timings);
|
|
}
|
|
|
|
static struct omap_dss_driver nec_8048_ops = {
|
|
.connect = nec_8048_connect,
|
|
.disconnect = nec_8048_disconnect,
|
|
|
|
.enable = nec_8048_enable,
|
|
.disable = nec_8048_disable,
|
|
|
|
.set_timings = nec_8048_set_timings,
|
|
.get_timings = nec_8048_get_timings,
|
|
.check_timings = nec_8048_check_timings,
|
|
|
|
.get_resolution = omapdss_default_get_resolution,
|
|
};
|
|
|
|
|
|
static int nec_8048_probe_of(struct spi_device *spi)
|
|
{
|
|
struct device_node *node = spi->dev.of_node;
|
|
struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
|
|
struct omap_dss_device *in;
|
|
int gpio;
|
|
|
|
gpio = of_get_named_gpio(node, "reset-gpios", 0);
|
|
if (!gpio_is_valid(gpio)) {
|
|
dev_err(&spi->dev, "failed to parse enable gpio\n");
|
|
return gpio;
|
|
}
|
|
ddata->res_gpio = gpio;
|
|
|
|
/* XXX the panel spec doesn't mention any QVGA pin?? */
|
|
ddata->qvga_gpio = -ENOENT;
|
|
|
|
in = omapdss_of_find_source_for_first_ep(node);
|
|
if (IS_ERR(in)) {
|
|
dev_err(&spi->dev, "failed to find video source\n");
|
|
return PTR_ERR(in);
|
|
}
|
|
|
|
ddata->in = in;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nec_8048_probe(struct spi_device *spi)
|
|
{
|
|
struct panel_drv_data *ddata;
|
|
struct omap_dss_device *dssdev;
|
|
int r;
|
|
|
|
dev_dbg(&spi->dev, "%s\n", __func__);
|
|
|
|
if (!spi->dev.of_node)
|
|
return -ENODEV;
|
|
|
|
spi->mode = SPI_MODE_0;
|
|
spi->bits_per_word = 32;
|
|
|
|
r = spi_setup(spi);
|
|
if (r < 0) {
|
|
dev_err(&spi->dev, "spi_setup failed: %d\n", r);
|
|
return r;
|
|
}
|
|
|
|
init_nec_8048_wvga_lcd(spi);
|
|
|
|
ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
|
|
if (ddata == NULL)
|
|
return -ENOMEM;
|
|
|
|
dev_set_drvdata(&spi->dev, ddata);
|
|
|
|
ddata->spi = spi;
|
|
|
|
r = nec_8048_probe_of(spi);
|
|
if (r)
|
|
return r;
|
|
|
|
if (gpio_is_valid(ddata->qvga_gpio)) {
|
|
r = devm_gpio_request_one(&spi->dev, ddata->qvga_gpio,
|
|
GPIOF_OUT_INIT_HIGH, "lcd QVGA");
|
|
if (r)
|
|
goto err_gpio;
|
|
}
|
|
|
|
if (gpio_is_valid(ddata->res_gpio)) {
|
|
r = devm_gpio_request_one(&spi->dev, ddata->res_gpio,
|
|
GPIOF_OUT_INIT_LOW, "lcd RES");
|
|
if (r)
|
|
goto err_gpio;
|
|
}
|
|
|
|
ddata->videomode = nec_8048_panel_timings;
|
|
|
|
dssdev = &ddata->dssdev;
|
|
dssdev->dev = &spi->dev;
|
|
dssdev->driver = &nec_8048_ops;
|
|
dssdev->type = OMAP_DISPLAY_TYPE_DPI;
|
|
dssdev->owner = THIS_MODULE;
|
|
dssdev->panel.timings = ddata->videomode;
|
|
|
|
r = omapdss_register_display(dssdev);
|
|
if (r) {
|
|
dev_err(&spi->dev, "Failed to register panel\n");
|
|
goto err_reg;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_reg:
|
|
err_gpio:
|
|
omap_dss_put_device(ddata->in);
|
|
return r;
|
|
}
|
|
|
|
static void nec_8048_remove(struct spi_device *spi)
|
|
{
|
|
struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
|
|
struct omap_dss_device *dssdev = &ddata->dssdev;
|
|
struct omap_dss_device *in = ddata->in;
|
|
|
|
dev_dbg(&ddata->spi->dev, "%s\n", __func__);
|
|
|
|
omapdss_unregister_display(dssdev);
|
|
|
|
nec_8048_disable(dssdev);
|
|
nec_8048_disconnect(dssdev);
|
|
|
|
omap_dss_put_device(in);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int nec_8048_suspend(struct device *dev)
|
|
{
|
|
struct spi_device *spi = to_spi_device(dev);
|
|
|
|
nec_8048_spi_send(spi, 2, 0x01);
|
|
mdelay(40);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nec_8048_resume(struct device *dev)
|
|
{
|
|
struct spi_device *spi = to_spi_device(dev);
|
|
|
|
/* reinitialize the panel */
|
|
spi_setup(spi);
|
|
nec_8048_spi_send(spi, 2, 0x00);
|
|
init_nec_8048_wvga_lcd(spi);
|
|
|
|
return 0;
|
|
}
|
|
static SIMPLE_DEV_PM_OPS(nec_8048_pm_ops, nec_8048_suspend,
|
|
nec_8048_resume);
|
|
#define NEC_8048_PM_OPS (&nec_8048_pm_ops)
|
|
#else
|
|
#define NEC_8048_PM_OPS NULL
|
|
#endif
|
|
|
|
static const struct of_device_id nec_8048_of_match[] = {
|
|
{ .compatible = "omapdss,nec,nl8048hl11", },
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, nec_8048_of_match);
|
|
|
|
static struct spi_driver nec_8048_driver = {
|
|
.driver = {
|
|
.name = "panel-nec-nl8048hl11",
|
|
.pm = NEC_8048_PM_OPS,
|
|
.of_match_table = nec_8048_of_match,
|
|
.suppress_bind_attrs = true,
|
|
},
|
|
.probe = nec_8048_probe,
|
|
.remove = nec_8048_remove,
|
|
};
|
|
|
|
module_spi_driver(nec_8048_driver);
|
|
|
|
MODULE_ALIAS("spi:nec,nl8048hl11");
|
|
MODULE_AUTHOR("Erik Gilling <konkers@android.com>");
|
|
MODULE_DESCRIPTION("NEC-NL8048HL11 Driver");
|
|
MODULE_LICENSE("GPL");
|