drm/amd/dc: Add dc display driver (v2)

Supported DCE versions: 8.0, 10.0, 11.0, 11.2

v2: rebase against 4.11

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/gpio/hw_gpio.h

@@ -0,0 +1,144 @@
+/*
+ * Copyright 2012-15 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef __DAL_HW_GPIO_H__
+#define __DAL_HW_GPIO_H__
+
+#include "gpio_regs.h"
+
+#define FROM_HW_GPIO_PIN(ptr) \
+	container_of((ptr), struct hw_gpio, base)
+
+struct addr_mask {
+	uint32_t addr;
+	uint32_t mask;
+};
+
+struct hw_gpio_pin {
+	const struct hw_gpio_pin_funcs *funcs;
+	enum gpio_id id;
+	uint32_t en;
+	enum gpio_mode mode;
+	bool opened;
+	struct dc_context *ctx;
+};
+
+struct hw_gpio_pin_funcs {
+	void (*destroy)(
+		struct hw_gpio_pin **ptr);
+	bool (*open)(
+		struct hw_gpio_pin *pin,
+		enum gpio_mode mode);
+	enum gpio_result (*get_value)(
+		const struct hw_gpio_pin *pin,
+		uint32_t *value);
+	enum gpio_result (*set_value)(
+		const struct hw_gpio_pin *pin,
+		uint32_t value);
+	enum gpio_result (*set_config)(
+		struct hw_gpio_pin *pin,
+		const struct gpio_config_data *config_data);
+	enum gpio_result (*change_mode)(
+		struct hw_gpio_pin *pin,
+		enum gpio_mode mode);
+	void (*close)(
+		struct hw_gpio_pin *pin);
+};
+
+
+struct hw_gpio;
+
+/* Register indices are represented by member variables
+ * and are to be filled in by constructors of derived classes.
+ * These members permit the use of common code
+ * for programming registers, where the sequence is the same
+ * but register sets are different.
+ * Some GPIOs have HW mux which allows to choose
+ * what is the source of the signal in HW mode */
+
+struct hw_gpio_pin_reg {
+	struct addr_mask DC_GPIO_DATA_MASK;
+	struct addr_mask DC_GPIO_DATA_A;
+	struct addr_mask DC_GPIO_DATA_EN;
+	struct addr_mask DC_GPIO_DATA_Y;
+};
+
+struct hw_gpio_mux_reg {
+	struct addr_mask GPIO_MUX_CONTROL;
+	struct addr_mask GPIO_MUX_STEREO_SEL;
+};
+
+struct hw_gpio {
+	struct hw_gpio_pin base;
+
+	/* variables to save register value */
+	struct {
+		uint32_t mask;
+		uint32_t a;
+		uint32_t en;
+		uint32_t mux;
+	} store;
+
+	/* GPIO MUX support */
+	bool mux_supported;
+	const struct gpio_registers *regs;
+};
+
+#define HW_GPIO_FROM_BASE(hw_gpio_pin) \
+	container_of((hw_gpio_pin), struct hw_gpio, base)
+
+bool dal_hw_gpio_construct(
+	struct hw_gpio *pin,
+	enum gpio_id id,
+	uint32_t en,
+	struct dc_context *ctx);
+
+bool dal_hw_gpio_open(
+	struct hw_gpio_pin *pin,
+	enum gpio_mode mode);
+
+enum gpio_result dal_hw_gpio_get_value(
+	const struct hw_gpio_pin *pin,
+	uint32_t *value);
+
+enum gpio_result dal_hw_gpio_config_mode(
+	struct hw_gpio *pin,
+	enum gpio_mode mode);
+
+void dal_hw_gpio_destruct(
+	struct hw_gpio *pin);
+
+enum gpio_result dal_hw_gpio_set_value(
+	const struct hw_gpio_pin *ptr,
+	uint32_t value);
+
+enum gpio_result dal_hw_gpio_change_mode(
+	struct hw_gpio_pin *ptr,
+	enum gpio_mode mode);
+
+void dal_hw_gpio_close(
+	struct hw_gpio_pin *ptr);
+
+#endif