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Release 4.11 drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c

/*
 * 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>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
#include <linux/gpio/consumer.h>
#include <linux/of_gpio.h>

#include "../dss/omapdss.h"


struct panel_drv_data {
	
struct omap_dss_device	dssdev;
	
struct omap_dss_device *in;

	
struct videomode vm;

	
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 videomode nec_8048_panel_vm = {
	.hactive	= LCD_XRES,
	.vactive	= LCD_YRES,
	.pixelclock	= LCD_PIXEL_CLOCK,
	.hfront_porch	= 6,
	.hsync_len	= 1,
	.hback_porch	= 4,
	.vfront_porch	= 3,
	.vsync_len	= 1,
	.vback_porch	= 4,

	.flags		= DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
			  DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
			  DISPLAY_FLAGS_PIXDATA_POSEDGE,
};


#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; }

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Tomi Valkeinen89100.00%1100.00%
Total89100.00%1100.00%


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; }

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Tomi Valkeinen83100.00%1100.00%
Total83100.00%1100.00%


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; int r; if (omapdss_device_is_connected(dssdev)) return 0; r = in->ops.dpi->connect(in, dssdev); if (r) return r; return 0; }

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Tomi Valkeinen68100.00%1100.00%
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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); }

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Tomi Valkeinen52100.00%1100.00%
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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->vm); 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; }

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Tomi Valkeinen13899.28%266.67%
Peter Ujfalusi10.72%133.33%
Total139100.00%3100.00%


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; }

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Tomi Valkeinen74100.00%1100.00%
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static void nec_8048_set_timings(struct omap_dss_device *dssdev, struct videomode *vm) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; ddata->vm = *vm; dssdev->panel.vm = *vm; in->ops.dpi->set_timings(in, vm); }

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Tomi Valkeinen5789.06%133.33%
Peter Ujfalusi710.94%266.67%
Total64100.00%3100.00%


static void nec_8048_get_timings(struct omap_dss_device *dssdev, struct videomode *vm) { struct panel_drv_data *ddata = to_panel_data(dssdev); *vm = ddata->vm; }

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Tomi Valkeinen2987.88%133.33%
Peter Ujfalusi412.12%266.67%
Total33100.00%3100.00%


static int nec_8048_check_timings(struct omap_dss_device *dssdev, struct videomode *vm) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; return in->ops.dpi->check_timings(in, vm); }

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Tomi Valkeinen4693.88%133.33%
Peter Ujfalusi36.12%266.67%
Total49100.00%3100.00%

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; }

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Tomi Valkeinen132100.00%1100.00%
Total132100.00%1100.00%


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__); 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; if (!spi->dev.of_node) return -ENODEV; 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->vm = nec_8048_panel_vm; dssdev = &ddata->dssdev; dssdev->dev = &spi->dev; dssdev->driver = &nec_8048_ops; dssdev->type = OMAP_DISPLAY_TYPE_DPI; dssdev->owner = THIS_MODULE; dssdev->panel.vm = ddata->vm; 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; }

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Tomi Valkeinen31698.75%375.00%
Peter Ujfalusi41.25%125.00%
Total320100.00%4100.00%


static int 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); return 0; }

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Tomi Valkeinen80100.00%1100.00%
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#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; }

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Tomi Valkeinen38100.00%1100.00%
Total38100.00%1100.00%


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; }

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Tomi Valkeinen44100.00%1100.00%
Total44100.00%1100.00%

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");

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Tomi Valkeinen203297.88%523.81%
Peter Ujfalusi432.07%1571.43%
Arnd Bergmann10.05%14.76%
Total2076100.00%21100.00%
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