drm/omap: move omapdss & displays under omapdrm

Now that omapfb has its own copy of omapdss and display drivers, we can
move omapdss and display drivers which omapdrm uses to omapdrm's
directory.

We also need to change the main drm Makefile so that omapdrm directory
is always entered, because omapdss has a file that can't be built as a
module.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Acked-by: Rob Clark <robdclark@gmail.com>

1 files changed, 379 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
new file mode 100644
index 000000000000..990af6baeb0f
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
@@ -0,0 +1,379 @@
+/*
+ * 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/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/of_gpio.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;
+
+	int ct_cp_hpd_gpio;
+	int ls_oe_gpio;
+	int hpd_gpio;
+
+	struct omap_video_timings timings;
+};
+
+#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;
+
+	gpio_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;
+}
+
+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;
+
+	gpio_set_value_cansleep(ddata->ct_cp_hpd_gpio, 0);
+
+	dst->src = NULL;
+	dssdev->dst = NULL;
+
+	in->ops.hdmi->disconnect(in, &ddata->dssdev);
+}
+
+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->timings);
+
+	r = in->ops.hdmi->enable(in);
+	if (r)
+		return r;
+
+	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+	return r;
+}
+
+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;
+}
+
+static void tpd_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->timings = *timings;
+	dssdev->panel.timings = *timings;
+
+	in->ops.hdmi->set_timings(in, timings);
+}
+
+static void tpd_get_timings(struct omap_dss_device *dssdev,
+		struct omap_video_timings *timings)
+{
+	struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+	*timings = ddata->timings;
+}
+
+static int tpd_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;
+	int r;
+
+	r = in->ops.hdmi->check_timings(in, timings);
+
+	return r;
+}
+
+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 (!gpio_get_value_cansleep(ddata->hpd_gpio))
+		return -ENODEV;
+
+	if (gpio_is_valid(ddata->ls_oe_gpio))
+		gpio_set_value_cansleep(ddata->ls_oe_gpio, 1);
+
+	r = in->ops.hdmi->read_edid(in, edid, len);
+
+	if (gpio_is_valid(ddata->ls_oe_gpio))
+		gpio_set_value_cansleep(ddata->ls_oe_gpio, 0);
+
+	return r;
+}
+
+static bool tpd_detect(struct omap_dss_device *dssdev)
+{
+	struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+	return gpio_get_value_cansleep(ddata->hpd_gpio);
+}
+
+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);
+}
+
+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);
+}
+
+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_pdata(struct platform_device *pdev)
+{
+	struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+	struct encoder_tpd12s015_platform_data *pdata;
+	struct omap_dss_device *dssdev, *in;
+
+	pdata = dev_get_platdata(&pdev->dev);
+
+	ddata->ct_cp_hpd_gpio = pdata->ct_cp_hpd_gpio;
+	ddata->ls_oe_gpio = pdata->ls_oe_gpio;
+	ddata->hpd_gpio = pdata->hpd_gpio;
+
+	in = omap_dss_find_output(pdata->source);
+	if (in == NULL) {
+		dev_err(&pdev->dev, "Failed to find video source\n");
+		return -ENODEV;
+	}
+
+	ddata->in = in;
+
+	dssdev = &ddata->dssdev;
+	dssdev->name = pdata->name;
+
+	return 0;
+}
+
+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;
+	int gpio;
+
+	/* CT CP HPD GPIO */
+	gpio = of_get_gpio(node, 0);
+	if (!gpio_is_valid(gpio)) {
+		dev_err(&pdev->dev, "failed to parse CT CP HPD gpio\n");
+		return gpio;
+	}
+	ddata->ct_cp_hpd_gpio = gpio;
+
+	/* LS OE GPIO */
+	gpio = of_get_gpio(node, 1);
+	if (gpio_is_valid(gpio) || gpio == -ENOENT) {
+		ddata->ls_oe_gpio = gpio;
+	} else {
+		dev_err(&pdev->dev, "failed to parse LS OE gpio\n");
+		return gpio;
+	}
+
+	/* HPD GPIO */
+	gpio = of_get_gpio(node, 2);
+	if (!gpio_is_valid(gpio)) {
+		dev_err(&pdev->dev, "failed to parse HPD gpio\n");
+		return gpio;
+	}
+	ddata->hpd_gpio = gpio;
+
+	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;
+}
+
+static int tpd_probe(struct platform_device *pdev)
+{
+	struct omap_dss_device *in, *dssdev;
+	struct panel_drv_data *ddata;
+	int r;
+
+	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
+	if (!ddata)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, ddata);
+
+	if (dev_get_platdata(&pdev->dev)) {
+		r = tpd_probe_pdata(pdev);
+		if (r)
+			return r;
+	} else if (pdev->dev.of_node) {
+		r = tpd_probe_of(pdev);
+		if (r)
+			return r;
+	} else {
+		return -ENODEV;
+	}
+
+	r = devm_gpio_request_one(&pdev->dev, ddata->ct_cp_hpd_gpio,
+			GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd");
+	if (r)
+		goto err_gpio;
+
+	if (gpio_is_valid(ddata->ls_oe_gpio)) {
+		r = devm_gpio_request_one(&pdev->dev, ddata->ls_oe_gpio,
+				GPIOF_OUT_INIT_LOW, "hdmi_ls_oe");
+		if (r)
+			goto err_gpio;
+	}
+
+	r = devm_gpio_request_one(&pdev->dev, ddata->hpd_gpio,
+			GPIOF_DIR_IN, "hdmi_hpd");
+	if (r)
+		goto err_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;
+}
+
+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;
+}
+
+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");