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path: root/drivers/video/omap2/displays/panel-tfp410.c
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Diffstat (limited to 'drivers/video/omap2/displays/panel-tfp410.c')
-rw-r--r--drivers/video/omap2/displays/panel-tfp410.c353
1 files changed, 0 insertions, 353 deletions
diff --git a/drivers/video/omap2/displays/panel-tfp410.c b/drivers/video/omap2/displays/panel-tfp410.c
deleted file mode 100644
index 1fdfb158a2a9..000000000000
--- a/drivers/video/omap2/displays/panel-tfp410.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/*
- * TFP410 DPI-to-DVI chip
- *
- * Copyright (C) 2011 Texas Instruments Inc
- * Author: 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 version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <video/omapdss.h>
-#include <linux/i2c.h>
-#include <linux/gpio.h>
-#include <drm/drm_edid.h>
-
-#include <video/omap-panel-data.h>
-
-static const struct omap_video_timings tfp410_default_timings = {
- .x_res = 640,
- .y_res = 480,
-
- .pixel_clock = 23500,
-
- .hfp = 48,
- .hsw = 32,
- .hbp = 80,
-
- .vfp = 3,
- .vsw = 4,
- .vbp = 7,
-
- .vsync_level = OMAPDSS_SIG_ACTIVE_HIGH,
- .hsync_level = OMAPDSS_SIG_ACTIVE_HIGH,
- .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
- .de_level = OMAPDSS_SIG_ACTIVE_HIGH,
- .sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
-};
-
-struct panel_drv_data {
- struct omap_dss_device *dssdev;
-
- struct mutex lock;
-
- int pd_gpio;
-
- struct i2c_adapter *i2c_adapter;
-};
-
-static int tfp410_power_on(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
- int r;
-
- if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
- return 0;
-
- omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
- omapdss_dpi_set_data_lines(dssdev, dssdev->phy.dpi.data_lines);
-
- r = omapdss_dpi_display_enable(dssdev);
- if (r)
- goto err0;
-
- if (gpio_is_valid(ddata->pd_gpio))
- gpio_set_value_cansleep(ddata->pd_gpio, 1);
-
- return 0;
-err0:
- return r;
-}
-
-static void tfp410_power_off(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
-
- if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
- return;
-
- if (gpio_is_valid(ddata->pd_gpio))
- gpio_set_value_cansleep(ddata->pd_gpio, 0);
-
- omapdss_dpi_display_disable(dssdev);
-}
-
-static int tfp410_probe(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata;
- int r;
- int i2c_bus_num;
-
- ddata = devm_kzalloc(dssdev->dev, sizeof(*ddata), GFP_KERNEL);
- if (!ddata)
- return -ENOMEM;
-
- dssdev->panel.timings = tfp410_default_timings;
-
- ddata->dssdev = dssdev;
- mutex_init(&ddata->lock);
-
- if (dssdev->data) {
- struct tfp410_platform_data *pdata = dssdev->data;
-
- ddata->pd_gpio = pdata->power_down_gpio;
- i2c_bus_num = pdata->i2c_bus_num;
- } else {
- ddata->pd_gpio = -1;
- i2c_bus_num = -1;
- }
-
- if (gpio_is_valid(ddata->pd_gpio)) {
- r = devm_gpio_request_one(dssdev->dev, ddata->pd_gpio,
- GPIOF_OUT_INIT_LOW, "tfp410 pd");
- if (r) {
- dev_err(dssdev->dev, "Failed to request PD GPIO %d\n",
- ddata->pd_gpio);
- return r;
- }
- }
-
- if (i2c_bus_num != -1) {
- struct i2c_adapter *adapter;
-
- adapter = i2c_get_adapter(i2c_bus_num);
- if (!adapter) {
- dev_err(dssdev->dev, "Failed to get I2C adapter, bus %d\n",
- i2c_bus_num);
- return -EPROBE_DEFER;
- }
-
- ddata->i2c_adapter = adapter;
- }
-
- dev_set_drvdata(dssdev->dev, ddata);
-
- return 0;
-}
-
-static void __exit tfp410_remove(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
-
- mutex_lock(&ddata->lock);
-
- if (ddata->i2c_adapter)
- i2c_put_adapter(ddata->i2c_adapter);
-
- dev_set_drvdata(dssdev->dev, NULL);
-
- mutex_unlock(&ddata->lock);
-}
-
-static int tfp410_enable(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
- int r;
-
- mutex_lock(&ddata->lock);
-
- r = tfp410_power_on(dssdev);
- if (r == 0)
- dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
-
- mutex_unlock(&ddata->lock);
-
- return r;
-}
-
-static void tfp410_disable(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
-
- mutex_lock(&ddata->lock);
-
- tfp410_power_off(dssdev);
-
- dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
-
- mutex_unlock(&ddata->lock);
-}
-
-static void tfp410_set_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
-
- mutex_lock(&ddata->lock);
- omapdss_dpi_set_timings(dssdev, timings);
- dssdev->panel.timings = *timings;
- mutex_unlock(&ddata->lock);
-}
-
-static void tfp410_get_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
-
- mutex_lock(&ddata->lock);
- *timings = dssdev->panel.timings;
- mutex_unlock(&ddata->lock);
-}
-
-static int tfp410_check_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
- int r;
-
- mutex_lock(&ddata->lock);
- r = dpi_check_timings(dssdev, timings);
- mutex_unlock(&ddata->lock);
-
- return r;
-}
-
-
-static int tfp410_ddc_read(struct i2c_adapter *adapter,
- unsigned char *buf, u16 count, u8 offset)
-{
- int r, retries;
-
- for (retries = 3; retries > 0; retries--) {
- struct i2c_msg msgs[] = {
- {
- .addr = DDC_ADDR,
- .flags = 0,
- .len = 1,
- .buf = &offset,
- }, {
- .addr = DDC_ADDR,
- .flags = I2C_M_RD,
- .len = count,
- .buf = buf,
- }
- };
-
- r = i2c_transfer(adapter, msgs, 2);
- if (r == 2)
- return 0;
-
- if (r != -EAGAIN)
- break;
- }
-
- return r < 0 ? r : -EIO;
-}
-
-static int tfp410_read_edid(struct omap_dss_device *dssdev,
- u8 *edid, int len)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
- int r, l, bytes_read;
-
- mutex_lock(&ddata->lock);
-
- if (!ddata->i2c_adapter) {
- r = -ENODEV;
- goto err;
- }
-
- l = min(EDID_LENGTH, len);
- r = tfp410_ddc_read(ddata->i2c_adapter, edid, l, 0);
- if (r)
- goto err;
-
- bytes_read = l;
-
- /* if there are extensions, read second block */
- if (len > EDID_LENGTH && edid[0x7e] > 0) {
- l = min(EDID_LENGTH, len - EDID_LENGTH);
-
- r = tfp410_ddc_read(ddata->i2c_adapter, edid + EDID_LENGTH,
- l, EDID_LENGTH);
- if (r)
- goto err;
-
- bytes_read += l;
- }
-
- mutex_unlock(&ddata->lock);
-
- return bytes_read;
-
-err:
- mutex_unlock(&ddata->lock);
- return r;
-}
-
-static bool tfp410_detect(struct omap_dss_device *dssdev)
-{
- struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev);
- unsigned char out;
- int r;
-
- mutex_lock(&ddata->lock);
-
- if (!ddata->i2c_adapter)
- goto out;
-
- r = tfp410_ddc_read(ddata->i2c_adapter, &out, 1, 0);
-
- mutex_unlock(&ddata->lock);
-
- return r == 0;
-
-out:
- mutex_unlock(&ddata->lock);
- return true;
-}
-
-static struct omap_dss_driver tfp410_driver = {
- .probe = tfp410_probe,
- .remove = __exit_p(tfp410_remove),
-
- .enable = tfp410_enable,
- .disable = tfp410_disable,
-
- .set_timings = tfp410_set_timings,
- .get_timings = tfp410_get_timings,
- .check_timings = tfp410_check_timings,
-
- .read_edid = tfp410_read_edid,
- .detect = tfp410_detect,
-
- .driver = {
- .name = "tfp410",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init tfp410_init(void)
-{
- return omap_dss_register_driver(&tfp410_driver);
-}
-
-static void __exit tfp410_exit(void)
-{
- omap_dss_unregister_driver(&tfp410_driver);
-}
-
-module_init(tfp410_init);
-module_exit(tfp410_exit);
-MODULE_LICENSE("GPL");
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