#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
-
+#include <linux/regulator/consumer.h>
#include <video/omapdss.h>
#include <video/omap-panel-data.h>
struct panel_drv_data {
struct omap_dss_device dssdev;
struct omap_dss_device *in;
+ struct regulator *vcc;
int data_lines;
struct omap_video_timings videomode;
- int resb_gpio;
- int ini_gpio;
- int mo_gpio;
- int lr_gpio;
- int ud_gpio;
+ struct gpio_desc *resb_gpio; /* low = reset active min 20 us */
+ struct gpio_desc *ini_gpio; /* high = power on */
+ struct gpio_desc *mo_gpio; /* low = 480x640, high = 240x320 */
+ struct gpio_desc *lr_gpio; /* high = conventional horizontal scanning */
+ struct gpio_desc *ud_gpio; /* high = conventional vertical scanning */
};
static const struct omap_video_timings sharp_ls_timings = {
if (omapdss_device_is_enabled(dssdev))
return 0;
- in->ops.dpi->set_data_lines(in, ddata->data_lines);
+ if (ddata->data_lines)
+ in->ops.dpi->set_data_lines(in, ddata->data_lines);
in->ops.dpi->set_timings(in, &ddata->videomode);
+ if (ddata->vcc) {
+ r = regulator_enable(ddata->vcc);
+ if (r != 0)
+ return r;
+ }
+
r = in->ops.dpi->enable(in);
- if (r)
+ if (r) {
+ regulator_disable(ddata->vcc);
return r;
+ }
/* wait couple of vsyncs until enabling the LCD */
msleep(50);
- if (gpio_is_valid(ddata->resb_gpio))
- gpio_set_value_cansleep(ddata->resb_gpio, 1);
+ if (ddata->resb_gpio)
+ gpiod_set_value_cansleep(ddata->resb_gpio, 1);
- if (gpio_is_valid(ddata->ini_gpio))
- gpio_set_value_cansleep(ddata->ini_gpio, 1);
+ if (ddata->ini_gpio)
+ gpiod_set_value_cansleep(ddata->ini_gpio, 1);
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
if (!omapdss_device_is_enabled(dssdev))
return;
- if (gpio_is_valid(ddata->ini_gpio))
- gpio_set_value_cansleep(ddata->ini_gpio, 0);
+ if (ddata->ini_gpio)
+ gpiod_set_value_cansleep(ddata->ini_gpio, 0);
- if (gpio_is_valid(ddata->resb_gpio))
- gpio_set_value_cansleep(ddata->resb_gpio, 0);
+ if (ddata->resb_gpio)
+ gpiod_set_value_cansleep(ddata->resb_gpio, 0);
/* wait at least 5 vsyncs after disabling the LCD */
in->ops.dpi->disable(in);
+ if (ddata->vcc)
+ regulator_disable(ddata->vcc);
+
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
}
.get_resolution = omapdss_default_get_resolution,
};
+static int sharp_ls_get_gpio(struct device *dev, int gpio, unsigned long flags,
+ char *desc, struct gpio_desc **gpiod)
+{
+ struct gpio_desc *gd;
+ int r;
+
+ *gpiod = NULL;
+
+ r = devm_gpio_request_one(dev, gpio, flags, desc);
+ if (r)
+ return r == -ENOENT ? 0 : r;
+
+ gd = gpio_to_desc(gpio);
+ if (IS_ERR(gd))
+ return PTR_ERR(gd) == -ENOENT ? 0 : PTR_ERR(gd);
+
+ *gpiod = gd;
+ return 0;
+}
+
static int sharp_ls_probe_pdata(struct platform_device *pdev)
{
const struct panel_sharp_ls037v7dw01_platform_data *pdata;
struct panel_drv_data *ddata = platform_get_drvdata(pdev);
struct omap_dss_device *dssdev, *in;
+ int r;
pdata = dev_get_platdata(&pdev->dev);
dssdev = &ddata->dssdev;
dssdev->name = pdata->name;
- ddata->resb_gpio = pdata->resb_gpio;
- ddata->ini_gpio = pdata->ini_gpio;
- ddata->mo_gpio = pdata->mo_gpio;
- ddata->lr_gpio = pdata->lr_gpio;
- ddata->ud_gpio = pdata->ud_gpio;
+ r = sharp_ls_get_gpio(&pdev->dev, pdata->mo_gpio, GPIOF_OUT_INIT_LOW,
+ "lcd MO", &ddata->mo_gpio);
+ if (r)
+ return r;
+ r = sharp_ls_get_gpio(&pdev->dev, pdata->lr_gpio, GPIOF_OUT_INIT_HIGH,
+ "lcd LR", &ddata->lr_gpio);
+ if (r)
+ return r;
+ r = sharp_ls_get_gpio(&pdev->dev, pdata->ud_gpio, GPIOF_OUT_INIT_HIGH,
+ "lcd UD", &ddata->ud_gpio);
+ if (r)
+ return r;
+ r = sharp_ls_get_gpio(&pdev->dev, pdata->resb_gpio, GPIOF_OUT_INIT_LOW,
+ "lcd RESB", &ddata->resb_gpio);
+ if (r)
+ return r;
+ r = sharp_ls_get_gpio(&pdev->dev, pdata->ini_gpio, GPIOF_OUT_INIT_LOW,
+ "lcd INI", &ddata->ini_gpio);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static int sharp_ls_get_gpio_of(struct device *dev, int index, int val,
+ const char *desc, struct gpio_desc **gpiod)
+{
+ struct gpio_desc *gd;
+ int r;
+
+ *gpiod = NULL;
+
+ gd = devm_gpiod_get_index(dev, desc, index);
+ if (IS_ERR(gd))
+ return PTR_ERR(gd) == -ENOENT ? 0 : PTR_ERR(gd);
+
+ r = gpiod_direction_output(gd, val);
+ if (r)
+ return r;
+
+ *gpiod = gd;
+ return 0;
+}
+
+static int sharp_ls_probe_of(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+ struct device_node *node = pdev->dev.of_node;
+ struct omap_dss_device *in;
+ int r;
+
+ ddata->vcc = devm_regulator_get(&pdev->dev, "envdd");
+ if (IS_ERR(ddata->vcc)) {
+ dev_err(&pdev->dev, "failed to get regulator\n");
+ return PTR_ERR(ddata->vcc);
+ }
+
+ /* lcd INI */
+ r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "enable", &ddata->ini_gpio);
+ if (r)
+ return r;
+
+ /* lcd RESB */
+ r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "reset", &ddata->resb_gpio);
+ if (r)
+ return r;
+
+ /* lcd MO */
+ r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "mode", &ddata->mo_gpio);
+ if (r)
+ return r;
+
+ /* lcd LR */
+ r = sharp_ls_get_gpio_of(&pdev->dev, 1, 1, "mode", &ddata->lr_gpio);
+ if (r)
+ return r;
+
+ /* lcd UD */
+ r = sharp_ls_get_gpio_of(&pdev->dev, 2, 1, "mode", &ddata->ud_gpio);
+ if (r)
+ return r;
+
+ in = omapdss_of_find_source_for_first_ep(node);
+ if (IS_ERR(in)) {
+ dev_err(&pdev->dev, "failed to find video source\n");
+ return PTR_ERR(in);
+ }
+
+ ddata->in = in;
return 0;
}
r = sharp_ls_probe_pdata(pdev);
if (r)
return r;
+ } else if (pdev->dev.of_node) {
+ r = sharp_ls_probe_of(pdev);
+ if (r)
+ return r;
} else {
return -ENODEV;
}
- if (gpio_is_valid(ddata->mo_gpio)) {
- r = devm_gpio_request_one(&pdev->dev, ddata->mo_gpio,
- GPIOF_OUT_INIT_LOW, "lcd MO");
- if (r)
- goto err_gpio;
- }
-
- if (gpio_is_valid(ddata->lr_gpio)) {
- r = devm_gpio_request_one(&pdev->dev, ddata->lr_gpio,
- GPIOF_OUT_INIT_HIGH, "lcd LR");
- if (r)
- goto err_gpio;
- }
-
- if (gpio_is_valid(ddata->ud_gpio)) {
- r = devm_gpio_request_one(&pdev->dev, ddata->ud_gpio,
- GPIOF_OUT_INIT_HIGH, "lcd UD");
- if (r)
- goto err_gpio;
- }
-
- if (gpio_is_valid(ddata->resb_gpio)) {
- r = devm_gpio_request_one(&pdev->dev, ddata->resb_gpio,
- GPIOF_OUT_INIT_LOW, "lcd RESB");
- if (r)
- goto err_gpio;
- }
-
- if (gpio_is_valid(ddata->ini_gpio)) {
- r = devm_gpio_request_one(&pdev->dev, ddata->ini_gpio,
- GPIOF_OUT_INIT_LOW, "lcd INI");
- if (r)
- goto err_gpio;
- }
-
ddata->videomode = sharp_ls_timings;
dssdev = &ddata->dssdev;
return 0;
err_reg:
-err_gpio:
omap_dss_put_device(ddata->in);
return r;
}
return 0;
}
+static const struct of_device_id sharp_ls_of_match[] = {
+ { .compatible = "omapdss,sharp,ls037v7dw01", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, sharp_ls_of_match);
+
static struct platform_driver sharp_ls_driver = {
.probe = sharp_ls_probe,
.remove = __exit_p(sharp_ls_remove),
.driver = {
.name = "panel-sharp-ls037v7dw01",
.owner = THIS_MODULE,
+ .of_match_table = sharp_ls_of_match,
+ .suppress_bind_attrs = true,
},
};
projects / firefly-linux-kernel-4.4.55.git / blobdiff