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Release 4.11 drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c

/*
 * TPD12S015 HDMI ESD protection & level shifter chip driver
 *
 * Copyright (C) 2013 Texas Instruments
 * 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.
 */

#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/gpio/consumer.h>

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


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

	
struct gpio_desc *ct_cp_hpd_gpio;
	
struct gpio_desc *ls_oe_gpio;
	
struct gpio_desc *hpd_gpio;

	
struct videomode vm;
};


#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)


static int tpd_connect(struct omap_dss_device *dssdev, struct omap_dss_device *dst) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; int r; r = in->ops.hdmi->connect(in, dssdev); if (r) return r; dst->src = dssdev; dssdev->dst = dst; gpiod_set_value_cansleep(ddata->ct_cp_hpd_gpio, 1); /* DC-DC converter needs at max 300us to get to 90% of 5V */ udelay(300); return 0; }

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Tomi Valkeinen8998.89%375.00%
Manisha Agrawal11.11%125.00%
Total90100.00%4100.00%


static void tpd_disconnect(struct omap_dss_device *dssdev, struct omap_dss_device *dst) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; WARN_ON(dst != dssdev->dst); if (dst != dssdev->dst) return; gpiod_set_value_cansleep(ddata->ct_cp_hpd_gpio, 0); dst->src = NULL; dssdev->dst = NULL; in->ops.hdmi->disconnect(in, &ddata->dssdev); }

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Tomi Valkeinen8998.89%375.00%
Manisha Agrawal11.11%125.00%
Total90100.00%4100.00%


static int tpd_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 (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) return 0; in->ops.hdmi->set_timings(in, &ddata->vm); r = in->ops.hdmi->enable(in); if (r) return r; dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; return r; }

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Tomi Valkeinen8898.88%150.00%
Peter Ujfalusi11.12%150.00%
Total89100.00%2100.00%


static void tpd_disable(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) return; in->ops.hdmi->disable(in); dssdev->state = OMAP_DSS_DISPLAY_DISABLED; }

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Tomi Valkeinen56100.00%1100.00%
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static void tpd_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.hdmi->set_timings(in, vm); }

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


static void tpd_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 tpd_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; int r; r = in->ops.hdmi->check_timings(in, vm); return r; }

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Tomi Valkeinen5394.64%133.33%
Peter Ujfalusi35.36%266.67%
Total56100.00%3100.00%


static int tpd_read_edid(struct omap_dss_device *dssdev, u8 *edid, int len) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; int r; if (!gpiod_get_value_cansleep(ddata->hpd_gpio)) return -ENODEV; gpiod_set_value_cansleep(ddata->ls_oe_gpio, 1); r = in->ops.hdmi->read_edid(in, edid, len); gpiod_set_value_cansleep(ddata->ls_oe_gpio, 0); return r; }

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Tomi Valkeinen8996.74%266.67%
Manisha Agrawal33.26%133.33%
Total92100.00%3100.00%


static bool tpd_detect(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); return gpiod_get_value_cansleep(ddata->hpd_gpio); }

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Tomi Valkeinen2896.55%150.00%
Manisha Agrawal13.45%150.00%
Total29100.00%2100.00%


static int tpd_set_infoframe(struct omap_dss_device *dssdev, const struct hdmi_avi_infoframe *avi) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; return in->ops.hdmi->set_infoframe(in, avi); }

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Tomi Valkeinen50100.00%1100.00%
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static int tpd_set_hdmi_mode(struct omap_dss_device *dssdev, bool hdmi_mode) { struct panel_drv_data *ddata = to_panel_data(dssdev); struct omap_dss_device *in = ddata->in; return in->ops.hdmi->set_hdmi_mode(in, hdmi_mode); }

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Tomi Valkeinen47100.00%1100.00%
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static const struct omapdss_hdmi_ops tpd_hdmi_ops = { .connect = tpd_connect, .disconnect = tpd_disconnect, .enable = tpd_enable, .disable = tpd_disable, .check_timings = tpd_check_timings, .set_timings = tpd_set_timings, .get_timings = tpd_get_timings, .read_edid = tpd_read_edid, .detect = tpd_detect, .set_infoframe = tpd_set_infoframe, .set_hdmi_mode = tpd_set_hdmi_mode, };
static int tpd_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; 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; }

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Tomi Valkeinen78100.00%1100.00%
Total78100.00%1100.00%


static int tpd_probe(struct platform_device *pdev) { struct omap_dss_device *in, *dssdev; struct panel_drv_data *ddata; int r; struct gpio_desc *gpio; ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; platform_set_drvdata(pdev, ddata); if (!pdev->dev.of_node) return -ENODEV; r = tpd_probe_of(pdev); if (r) return r; gpio = devm_gpiod_get_index_optional(&pdev->dev, NULL, 0, GPIOD_OUT_LOW); if (IS_ERR(gpio)) { r = PTR_ERR(gpio); goto err_gpio; } ddata->ct_cp_hpd_gpio = gpio; gpio = devm_gpiod_get_index_optional(&pdev->dev, NULL, 1, GPIOD_OUT_LOW); if (IS_ERR(gpio)) { r = PTR_ERR(gpio); goto err_gpio; } ddata->ls_oe_gpio = gpio; gpio = devm_gpiod_get_index(&pdev->dev, NULL, 2, GPIOD_IN); if (IS_ERR(gpio)) { r = PTR_ERR(gpio); goto err_gpio; } ddata->hpd_gpio = gpio; dssdev = &ddata->dssdev; dssdev->ops.hdmi = &tpd_hdmi_ops; dssdev->dev = &pdev->dev; dssdev->type = OMAP_DISPLAY_TYPE_HDMI; dssdev->output_type = OMAP_DISPLAY_TYPE_HDMI; dssdev->owner = THIS_MODULE; dssdev->port_num = 1; in = ddata->in; r = omapdss_register_output(dssdev); if (r) { dev_err(&pdev->dev, "Failed to register output\n"); goto err_reg; } return 0; err_reg: err_gpio: omap_dss_put_device(ddata->in); return r; }

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Tomi Valkeinen25581.21%342.86%
Manisha Agrawal5316.88%342.86%
Archit Taneja61.91%114.29%
Total314100.00%7100.00%


static int __exit tpd_remove(struct platform_device *pdev) { struct panel_drv_data *ddata = platform_get_drvdata(pdev); struct omap_dss_device *dssdev = &ddata->dssdev; struct omap_dss_device *in = ddata->in; omapdss_unregister_output(&ddata->dssdev); WARN_ON(omapdss_device_is_enabled(dssdev)); if (omapdss_device_is_enabled(dssdev)) tpd_disable(dssdev); WARN_ON(omapdss_device_is_connected(dssdev)); if (omapdss_device_is_connected(dssdev)) tpd_disconnect(dssdev, dssdev->dst); omap_dss_put_device(in); return 0; }

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Tomi Valkeinen101100.00%2100.00%
Total101100.00%2100.00%

static const struct of_device_id tpd_of_match[] = { { .compatible = "omapdss,ti,tpd12s015", }, {}, }; MODULE_DEVICE_TABLE(of, tpd_of_match); static struct platform_driver tpd_driver = { .probe = tpd_probe, .remove = __exit_p(tpd_remove), .driver = { .name = "tpd12s015", .of_match_table = tpd_of_match, .suppress_bind_attrs = true, }, }; module_platform_driver(tpd_driver); MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); MODULE_DESCRIPTION("TPD12S015 driver"); MODULE_LICENSE("GPL");

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Tomi Valkeinen130693.35%853.33%
Manisha Agrawal694.93%320.00%
Peter Ujfalusi181.29%320.00%
Archit Taneja60.43%16.67%
Total1399100.00%15100.00%
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