drm/amdgpu/display: Add i2c/aux support for DCN

Implement support for i2c and aux on DCN.

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

2 files changed, 157 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dcn10/i2caux_dcn10.c b/drivers/gpu/drm/amd/display/dc/i2caux/dcn10/i2caux_dcn10.c
new file mode 100644
index 000000000000..9f17d2e4376b
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/dcn10/i2caux_dcn10.c
@@ -0,0 +1,125 @@
+/*
+ * 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 "dm_services.h"
+
+#include "include/i2caux_interface.h"
+#include "../i2caux.h"
+#include "../engine.h"
+#include "../i2c_engine.h"
+#include "../i2c_sw_engine.h"
+#include "../i2c_hw_engine.h"
+
+#include "../dce110/aux_engine_dce110.h"
+#include "../dce110/i2c_hw_engine_dce110.h"
+#include "../dce110/i2caux_dce110.h"
+
+#include "raven1/DCN/dcn_1_0_offset.h"
+#include "raven1/DCN/dcn_1_0_sh_mask.h"
+#include "vega10/soc15ip.h"
+
+/* begin *********************
+ * macros to expend register list macro defined in HW object header file */
+
+#define BASE_INNER(seg) \
+	DCE_BASE__INST0_SEG ## seg
+
+/* compile time expand base address. */
+#define BASE(seg) \
+	BASE_INNER(seg)
+
+#define SR(reg_name)\
+		.reg_name = BASE(mm ## reg_name ## _BASE_IDX) +  \
+					mm ## reg_name
+
+#define SRI(reg_name, block, id)\
+	.reg_name = BASE(mm ## block ## id ## _ ## reg_name ## _BASE_IDX) + \
+					mm ## block ## id ## _ ## reg_name
+/* macros to expend register list macro defined in HW object header file
+ * end *********************/
+
+#define aux_regs(id)\
+[id] = {\
+	AUX_COMMON_REG_LIST(id), \
+	.AUX_RESET_MASK = DP_AUX0_AUX_CONTROL__AUX_RESET_MASK \
+}
+
+#define hw_engine_regs(id)\
+{\
+		I2C_HW_ENGINE_COMMON_REG_LIST(id) \
+}
+
+static const struct dce110_aux_registers dcn10_aux_regs[] = {
+		aux_regs(0),
+		aux_regs(1),
+		aux_regs(2),
+		aux_regs(3),
+		aux_regs(4),
+		aux_regs(5),
+};
+
+static const struct dce110_i2c_hw_engine_registers dcn10_hw_engine_regs[] = {
+		hw_engine_regs(1),
+		hw_engine_regs(2),
+		hw_engine_regs(3),
+		hw_engine_regs(4),
+		hw_engine_regs(5),
+		hw_engine_regs(6)
+};
+
+static const struct dce110_i2c_hw_engine_shift i2c_shift = {
+		I2C_COMMON_MASK_SH_LIST_DCE110(__SHIFT)
+};
+
+static const struct dce110_i2c_hw_engine_mask i2c_mask = {
+		I2C_COMMON_MASK_SH_LIST_DCE110(_MASK)
+};
+
+struct i2caux *dal_i2caux_dcn10_create(
+	struct dc_context *ctx)
+{
+	struct i2caux_dce110 *i2caux_dce110 =
+		dm_alloc(sizeof(struct i2caux_dce110));
+
+	if (!i2caux_dce110) {
+		ASSERT_CRITICAL(false);
+		return NULL;
+	}
+
+	if (dal_i2caux_dce110_construct(
+			i2caux_dce110,
+			ctx,
+			dcn10_aux_regs,
+			dcn10_hw_engine_regs,
+			&i2c_shift,
+			&i2c_mask))
+		return &i2caux_dce110->base;
+
+	ASSERT_CRITICAL(false);
+
+	dm_free(i2caux_dce110);
+
+	return NULL;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/dcn10/i2caux_dcn10.h b/drivers/gpu/drm/amd/display/dc/i2caux/dcn10/i2caux_dcn10.h
new file mode 100644
index 000000000000..aeb4a86463d4
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/i2caux/dcn10/i2caux_dcn10.h
@@ -0,0 +1,32 @@
+/*
+ * 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_I2C_AUX_DCN10_H__
+#define __DAL_I2C_AUX_DCN10_H__
+
+struct i2caux *dal_i2caux_dcn10_create(
+	struct dc_context *ctx);
+
+#endif /* __DAL_I2C_AUX_DCN10_H__ */