drm/tilcdc: Remove obsolete bundled tilcdc tfp410 driver

Remove obsolete bundled tfp410 driver with its "ti,tilcdc,tfp410"
devicetree binding. No platform has ever used this driver in the
mainline kernel and if anybody connects tfp410 to tilcdc he or she
should use the generic drm tfp410 bridge driver.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6e2db6c328467cc51e8d633ecb0ffa7c5736f2e8.1575901747.git.jsarha@ti.com

Documentation/devicetree/bindings/display/tilcdc/tfp410.txt

-Device-Tree bindings for tilcdc DRM TFP410 output driver
-
-Required properties:
- - compatible: value should be "ti,tilcdc,tfp410".
- - i2c: the phandle for the i2c device to use for DDC
-
-Recommended properties:
- - pinctrl-names, pinctrl-0: the pincontrol settings to configure
-   muxing properly for pins that connect to TFP410 device
- - powerdn-gpio: the powerdown GPIO, pulled low to power down the
-   TFP410 device (for DPMS_OFF)
-
-Example:
-
-	dvicape {
-		compatible = "ti,tilcdc,tfp410";
-		i2c = <&i2c2>;
-		pinctrl-names = "default";
-		pinctrl-0 = <&bone_dvi_cape_dvi_00A1_pins>;
-		powerdn-gpio = <&gpio2 31 0>;
-	};

drivers/gpu/drm/tilcdc/Makefile

@@ -6,7 +6,6 @@ endif
 tilcdc-y := \
 	tilcdc_plane.o \
 	tilcdc_crtc.o \
-	tilcdc_tfp410.o \
 	tilcdc_panel.o \
 	tilcdc_external.o \
 	tilcdc_drv.o

drivers/gpu/drm/tilcdc/tilcdc_drv.c

@@ -30,7 +30,6 @@
 #include "tilcdc_external.h"
 #include "tilcdc_panel.h"
 #include "tilcdc_regs.h"
-#include "tilcdc_tfp410.h"
 
 static LIST_HEAD(module_list);
 
@@ -643,7 +642,6 @@ static struct platform_driver tilcdc_platform_driver = {
 static int __init tilcdc_drm_init(void)
 {
 	DBG("init");
-	tilcdc_tfp410_init();
 	tilcdc_panel_init();
 	return platform_driver_register(&tilcdc_platform_driver);
 }
@@ -653,7 +651,6 @@ static void __exit tilcdc_drm_fini(void)
 	DBG("fini");
 	platform_driver_unregister(&tilcdc_platform_driver);
 	tilcdc_panel_fini();
-	tilcdc_tfp410_fini();
 }
 
 module_init(tilcdc_drm_init);

drivers/gpu/drm/tilcdc/tilcdc_tfp410.c

-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2012 Texas Instruments
- * Author: Rob Clark <robdclark@gmail.com>
- */
-
-#include <linux/gpio.h>
-#include <linux/mod_devicetable.h>
-#include <linux/of_gpio.h>
-#include <linux/pinctrl/consumer.h>
-#include <linux/platform_device.h>
-
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_encoder.h>
-#include <drm/drm_modeset_helper_vtables.h>
-#include <drm/drm_probe_helper.h>
-
-#include "tilcdc_drv.h"
-#include "tilcdc_tfp410.h"
-
-struct tfp410_module {
-	struct tilcdc_module base;
-	struct i2c_adapter *i2c;
-	int gpio;
-};
-#define to_tfp410_module(x) container_of(x, struct tfp410_module, base)
-
-
-static const struct tilcdc_panel_info dvi_info = {
-		.ac_bias                = 255,
-		.ac_bias_intrpt         = 0,
-		.dma_burst_sz           = 16,
-		.bpp                    = 16,
-		.fdd                    = 0x80,
-		.tft_alt_mode           = 0,
-		.sync_edge              = 0,
-		.sync_ctrl              = 1,
-		.raster_order           = 0,
-};
-
-/*
- * Encoder:
- */
-
-struct tfp410_encoder {
-	struct drm_encoder base;
-	struct tfp410_module *mod;
-	int dpms;
-};
-#define to_tfp410_encoder(x) container_of(x, struct tfp410_encoder, base)
-
-static void tfp410_encoder_dpms(struct drm_encoder *encoder, int mode)
-{
-	struct tfp410_encoder *tfp410_encoder = to_tfp410_encoder(encoder);
-
-	if (tfp410_encoder->dpms == mode)
-		return;
-
-	if (mode == DRM_MODE_DPMS_ON) {
-		DBG("Power on");
-		gpio_direction_output(tfp410_encoder->mod->gpio, 1);
-	} else {
-		DBG("Power off");
-		gpio_direction_output(tfp410_encoder->mod->gpio, 0);
-	}
-
-	tfp410_encoder->dpms = mode;
-}
-
-static void tfp410_encoder_prepare(struct drm_encoder *encoder)
-{
-	tfp410_encoder_dpms(encoder, DRM_MODE_DPMS_OFF);
-}
-
-static void tfp410_encoder_commit(struct drm_encoder *encoder)
-{
-	tfp410_encoder_dpms(encoder, DRM_MODE_DPMS_ON);
-}
-
-static void tfp410_encoder_mode_set(struct drm_encoder *encoder,
-		struct drm_display_mode *mode,
-		struct drm_display_mode *adjusted_mode)
-{
-	/* nothing needed */
-}
-
-static const struct drm_encoder_funcs tfp410_encoder_funcs = {
-		.destroy        = drm_encoder_cleanup,
-};
-
-static const struct drm_encoder_helper_funcs tfp410_encoder_helper_funcs = {
-		.dpms           = tfp410_encoder_dpms,
-		.prepare        = tfp410_encoder_prepare,
-		.commit         = tfp410_encoder_commit,
-		.mode_set       = tfp410_encoder_mode_set,
-};
-
-static struct drm_encoder *tfp410_encoder_create(struct drm_device *dev,
-		struct tfp410_module *mod)
-{
-	struct tfp410_encoder *tfp410_encoder;
-	struct drm_encoder *encoder;
-	int ret;
-
-	tfp410_encoder = devm_kzalloc(dev->dev, sizeof(*tfp410_encoder),
-				      GFP_KERNEL);
-	if (!tfp410_encoder)
-		return NULL;
-
-	tfp410_encoder->dpms = DRM_MODE_DPMS_OFF;
-	tfp410_encoder->mod = mod;
-
-	encoder = &tfp410_encoder->base;
-	encoder->possible_crtcs = 1;
-
-	ret = drm_encoder_init(dev, encoder, &tfp410_encoder_funcs,
-			DRM_MODE_ENCODER_TMDS, NULL);
-	if (ret < 0)
-		goto fail;
-
-	drm_encoder_helper_add(encoder, &tfp410_encoder_helper_funcs);
-
-	return encoder;
-
-fail:
-	drm_encoder_cleanup(encoder);
-	return NULL;
-}
-
-/*
- * Connector:
- */
-
-struct tfp410_connector {
-	struct drm_connector base;
-
-	struct drm_encoder *encoder;  /* our connected encoder */
-	struct tfp410_module *mod;
-};
-#define to_tfp410_connector(x) container_of(x, struct tfp410_connector, base)
-
-
-static void tfp410_connector_destroy(struct drm_connector *connector)
-{
-	drm_connector_unregister(connector);
-	drm_connector_cleanup(connector);
-}
-
-static enum drm_connector_status tfp410_connector_detect(
-		struct drm_connector *connector,
-		bool force)
-{
-	struct tfp410_connector *tfp410_connector = to_tfp410_connector(connector);
-
-	if (drm_probe_ddc(tfp410_connector->mod->i2c))
-		return connector_status_connected;
-
-	return connector_status_unknown;
-}
-
-static int tfp410_connector_get_modes(struct drm_connector *connector)
-{
-	struct tfp410_connector *tfp410_connector = to_tfp410_connector(connector);
-	struct edid *edid;
-	int ret = 0;
-
-	edid = drm_get_edid(connector, tfp410_connector->mod->i2c);
-
-	drm_connector_update_edid_property(connector, edid);
-
-	if (edid) {
-		ret = drm_add_edid_modes(connector, edid);
-		kfree(edid);
-	}
-
-	return ret;
-}
-
-static struct drm_encoder *tfp410_connector_best_encoder(
-		struct drm_connector *connector)
-{
-	struct tfp410_connector *tfp410_connector = to_tfp410_connector(connector);
-	return tfp410_connector->encoder;
-}
-
-static const struct drm_connector_funcs tfp410_connector_funcs = {
-	.destroy            = tfp410_connector_destroy,
-	.detect             = tfp410_connector_detect,
-	.fill_modes         = drm_helper_probe_single_connector_modes,
-	.reset              = drm_atomic_helper_connector_reset,
-	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static const struct drm_connector_helper_funcs tfp410_connector_helper_funcs = {
-	.get_modes          = tfp410_connector_get_modes,
-	.best_encoder       = tfp410_connector_best_encoder,
-};
-
-static struct drm_connector *tfp410_connector_create(struct drm_device *dev,
-		struct tfp410_module *mod, struct drm_encoder *encoder)
-{
-	struct tfp410_connector *tfp410_connector;
-	struct drm_connector *connector;
-	int ret;
-
-	tfp410_connector = devm_kzalloc(dev->dev, sizeof(*tfp410_connector),
-					GFP_KERNEL);
-	if (!tfp410_connector)
-		return NULL;
-
-	tfp410_connector->encoder = encoder;
-	tfp410_connector->mod = mod;
-
-	connector = &tfp410_connector->base;
-
-	drm_connector_init_with_ddc(dev, connector,
-				    &tfp410_connector_funcs,
-				    DRM_MODE_CONNECTOR_DVID,
-				    mod->i2c);
-	drm_connector_helper_add(connector, &tfp410_connector_helper_funcs);
-
-	connector->polled = DRM_CONNECTOR_POLL_CONNECT |
-			DRM_CONNECTOR_POLL_DISCONNECT;
-
-	connector->interlace_allowed = 0;
-	connector->doublescan_allowed = 0;
-
-	ret = drm_connector_attach_encoder(connector, encoder);
-	if (ret)
-		goto fail;
-
-	return connector;
-
-fail:
-	tfp410_connector_destroy(connector);
-	return NULL;
-}
-
-/*
- * Module:
- */
-
-static int tfp410_modeset_init(struct tilcdc_module *mod, struct drm_device *dev)
-{
-	struct tfp410_module *tfp410_mod = to_tfp410_module(mod);
-	struct tilcdc_drm_private *priv = dev->dev_private;
-	struct drm_encoder *encoder;
-	struct drm_connector *connector;
-
-	encoder = tfp410_encoder_create(dev, tfp410_mod);
-	if (!encoder)
-		return -ENOMEM;
-
-	connector = tfp410_connector_create(dev, tfp410_mod, encoder);
-	if (!connector)
-		return -ENOMEM;
-
-	priv->encoders[priv->num_encoders++] = encoder;
-	priv->connectors[priv->num_connectors++] = connector;
-
-	tilcdc_crtc_set_panel_info(priv->crtc, &dvi_info);
-	return 0;
-}
-
-static const struct tilcdc_module_ops tfp410_module_ops = {
-		.modeset_init = tfp410_modeset_init,
-};
-
-/*
- * Device:
- */
-
-static int tfp410_probe(struct platform_device *pdev)
-{
-	struct device_node *node = pdev->dev.of_node;
-	struct device_node *i2c_node;
-	struct tfp410_module *tfp410_mod;
-	struct tilcdc_module *mod;
-	struct pinctrl *pinctrl;
-	uint32_t i2c_phandle;
-	int ret = -EINVAL;
-
-	/* bail out early if no DT data: */
-	if (!node) {
-		dev_err(&pdev->dev, "device-tree data is missing\n");
-		return -ENXIO;
-	}
-
-	tfp410_mod = devm_kzalloc(&pdev->dev, sizeof(*tfp410_mod), GFP_KERNEL);
-	if (!tfp410_mod)
-		return -ENOMEM;
-
-	mod = &tfp410_mod->base;
-	pdev->dev.platform_data = mod;
-
-	tilcdc_module_init(mod, "tfp410", &tfp410_module_ops);
-
-	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
-	if (IS_ERR(pinctrl))
-		dev_warn(&pdev->dev, "pins are not configured\n");
-
-	if (of_property_read_u32(node, "i2c", &i2c_phandle)) {
-		dev_err(&pdev->dev, "could not get i2c bus phandle\n");
-		goto fail;
-	}
-
-	i2c_node = of_find_node_by_phandle(i2c_phandle);
-	if (!i2c_node) {
-		dev_err(&pdev->dev, "could not get i2c bus node\n");
-		goto fail;
-	}
-
-	tfp410_mod->i2c = of_find_i2c_adapter_by_node(i2c_node);
-	if (!tfp410_mod->i2c) {
-		dev_err(&pdev->dev, "could not get i2c\n");
-		of_node_put(i2c_node);
-		goto fail;
-	}
-
-	of_node_put(i2c_node);
-
-	tfp410_mod->gpio = of_get_named_gpio_flags(node, "powerdn-gpio",
-			0, NULL);
-	if (tfp410_mod->gpio < 0) {
-		dev_warn(&pdev->dev, "No power down GPIO\n");
-	} else {
-		ret = gpio_request(tfp410_mod->gpio, "DVI_PDn");
-		if (ret) {
-			dev_err(&pdev->dev, "could not get DVI_PDn gpio\n");
-			goto fail_adapter;
-		}
-	}
-
-	return 0;
-
-fail_adapter:
-	i2c_put_adapter(tfp410_mod->i2c);
-
-fail:
-	tilcdc_module_cleanup(mod);
-	return ret;
-}
-
-static int tfp410_remove(struct platform_device *pdev)
-{
-	struct tilcdc_module *mod = dev_get_platdata(&pdev->dev);
-	struct tfp410_module *tfp410_mod = to_tfp410_module(mod);
-
-	i2c_put_adapter(tfp410_mod->i2c);
-	gpio_free(tfp410_mod->gpio);
-
-	tilcdc_module_cleanup(mod);
-
-	return 0;
-}
-
-static const struct of_device_id tfp410_of_match[] = {
-		{ .compatible = "ti,tilcdc,tfp410", },
-		{ },
-};
-
-struct platform_driver tfp410_driver = {
-	.probe = tfp410_probe,
-	.remove = tfp410_remove,
-	.driver = {
-		.owner = THIS_MODULE,
-		.name = "tfp410",
-		.of_match_table = tfp410_of_match,
-	},
-};
-
-int __init tilcdc_tfp410_init(void)
-{
-	return platform_driver_register(&tfp410_driver);
-}
-
-void __exit tilcdc_tfp410_fini(void)
-{
-	platform_driver_unregister(&tfp410_driver);
-}

drivers/gpu/drm/tilcdc/tilcdc_tfp410.h

-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012 Texas Instruments
- * Author: Rob Clark <robdclark@gmail.com>
- */
-
-#ifndef __TILCDC_TFP410_H__
-#define __TILCDC_TFP410_H__
-
-/* sub-module for tfp410 dvi adaptor */
-
-int tilcdc_tfp410_init(void);
-void tilcdc_tfp410_fini(void);
-
-#endif /* __TILCDC_TFP410_H__ */