1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c b/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c
new file mode 100644
index 000000000000..f9e847e6555d
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/gpio/hw_generic.c
@@ -0,0 +1,129 @@
+/*
+ * 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
+ *
+ */
+
+#include <linux/slab.h>
+
+#include "dm_services.h"
+
+#include "include/gpio_interface.h"
+#include "include/gpio_types.h"
+#include "hw_gpio.h"
+#include "hw_generic.h"
+
+#include "reg_helper.h"
+#include "generic_regs.h"
+
+#undef FN
+#define FN(reg_name, field_name) \
+	generic->shifts->field_name, generic->masks->field_name
+
+#define CTX \
+	generic->base.base.ctx
+#define REG(reg)\
+	(generic->regs->reg)
+
+struct gpio;
+
+static void dal_hw_generic_destruct(
+	struct hw_generic *pin)
+{
+	dal_hw_gpio_destruct(&pin->base);
+}
+
+static void dal_hw_generic_destroy(
+	struct hw_gpio_pin **ptr)
+{
+	struct hw_generic *generic = HW_GENERIC_FROM_BASE(*ptr);
+
+	dal_hw_generic_destruct(generic);
+
+	kfree(generic);
+
+	*ptr = NULL;
+}
+
+static enum gpio_result set_config(
+	struct hw_gpio_pin *ptr,
+	const struct gpio_config_data *config_data)
+{
+	struct hw_generic *generic = HW_GENERIC_FROM_BASE(ptr);
+
+	if (!config_data)
+		return GPIO_RESULT_INVALID_DATA;
+
+	REG_UPDATE_2(mux,
+		GENERIC_EN, config_data->config.generic_mux.enable_output_from_mux,
+		GENERIC_SEL, config_data->config.generic_mux.mux_select);
+
+	return GPIO_RESULT_OK;
+}
+
+static const struct hw_gpio_pin_funcs funcs = {
+	.destroy = dal_hw_generic_destroy,
+	.open = dal_hw_gpio_open,
+	.get_value = dal_hw_gpio_get_value,
+	.set_value = dal_hw_gpio_set_value,
+	.set_config = set_config,
+	.change_mode = dal_hw_gpio_change_mode,
+	.close = dal_hw_gpio_close,
+};
+
+static void dal_hw_generic_construct(
+	struct hw_generic *pin,
+	enum gpio_id id,
+	uint32_t en,
+	struct dc_context *ctx)
+{
+	dal_hw_gpio_construct(&pin->base, id, en, ctx);
+	pin->base.base.funcs = &funcs;
+}
+
+void dal_hw_generic_init(
+	struct hw_generic **hw_generic,
+	struct dc_context *ctx,
+	enum gpio_id id,
+	uint32_t en)
+{
+	if ((en < GPIO_DDC_LINE_MIN) || (en > GPIO_DDC_LINE_MAX)) {
+		ASSERT_CRITICAL(false);
+		*hw_generic = NULL;
+	}
+
+	*hw_generic = kzalloc(sizeof(struct hw_generic), GFP_KERNEL);
+	if (!*hw_generic) {
+		ASSERT_CRITICAL(false);
+		return;
+	}
+
+	dal_hw_generic_construct(*hw_generic, id, en, ctx);
+}
+
+
+struct hw_gpio_pin *dal_hw_generic_get_pin(struct gpio *gpio)
+{
+	struct hw_generic *hw_generic = dal_gpio_get_generic(gpio);
+
+	return &hw_generic->base.base;
+}