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>

1 files changed, 195 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.c b/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.c
new file mode 100644
index 000000000000..dd1cf5e6e949
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2016 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 "dce_hwseq.h"
+#include "reg_helper.h"
+#include "hw_sequencer.h"
+
+#define CTX \
+	hws->ctx
+#define REG(reg)\
+	hws->regs->reg
+
+#undef FN
+#define FN(reg_name, field_name) \
+	hws->shifts->field_name, hws->masks->field_name
+
+void dce_enable_fe_clock(struct dce_hwseq *hws,
+		unsigned int fe_inst, bool enable)
+{
+	REG_UPDATE(DCFE_CLOCK_CONTROL[fe_inst],
+			DCFE_CLOCK_ENABLE, enable);
+}
+
+void dce_pipe_control_lock(struct dce_hwseq *hws,
+		unsigned int blnd_inst,
+		enum pipe_lock_control control_mask,
+		bool lock)
+{
+	uint32_t lock_val = lock ? 1 : 0;
+	uint32_t dcp_grph, scl, dcp_grph_surf, blnd, update_lock_mode;
+
+	uint32_t val = REG_GET_5(BLND_V_UPDATE_LOCK[blnd_inst],
+			BLND_DCP_GRPH_V_UPDATE_LOCK, &dcp_grph,
+			BLND_SCL_V_UPDATE_LOCK, &scl,
+			BLND_DCP_GRPH_SURF_V_UPDATE_LOCK, &dcp_grph_surf,
+			BLND_BLND_V_UPDATE_LOCK, &blnd,
+			BLND_V_UPDATE_LOCK_MODE, &update_lock_mode);
+
+	if (control_mask & PIPE_LOCK_CONTROL_GRAPHICS)
+		dcp_grph = lock_val;
+
+	if (control_mask & PIPE_LOCK_CONTROL_SCL)
+		scl = lock_val;
+
+	if (control_mask & PIPE_LOCK_CONTROL_SURFACE)
+		dcp_grph_surf = lock_val;
+
+	if (control_mask & PIPE_LOCK_CONTROL_BLENDER)
+		blnd = lock_val;
+
+	if (control_mask & PIPE_LOCK_CONTROL_MODE)
+		update_lock_mode = lock_val;
+
+	REG_SET_5(BLND_V_UPDATE_LOCK[blnd_inst], val,
+			BLND_DCP_GRPH_V_UPDATE_LOCK, dcp_grph,
+			BLND_SCL_V_UPDATE_LOCK, scl,
+			BLND_DCP_GRPH_SURF_V_UPDATE_LOCK, dcp_grph_surf,
+			BLND_BLND_V_UPDATE_LOCK, blnd,
+			BLND_V_UPDATE_LOCK_MODE, update_lock_mode);
+
+	if (hws->wa.blnd_crtc_trigger)
+		if (!lock && (control_mask & PIPE_LOCK_CONTROL_BLENDER)) {
+			uint32_t value = REG_READ(CRTC_H_BLANK_START_END[blnd_inst]);
+			REG_WRITE(CRTC_H_BLANK_START_END[blnd_inst], value);
+		}
+}
+
+void dce_set_blender_mode(struct dce_hwseq *hws,
+	unsigned int blnd_inst,
+	enum blnd_mode mode)
+{
+	uint32_t feedthrough = 1;
+	uint32_t blnd_mode = 0;
+	uint32_t multiplied_mode = 0;
+	uint32_t alpha_mode = 2;
+
+	switch (mode) {
+	case BLND_MODE_OTHER_PIPE:
+		feedthrough = 0;
+		blnd_mode = 1;
+		alpha_mode = 0;
+		break;
+	case BLND_MODE_BLENDING:
+		feedthrough = 0;
+		blnd_mode = 2;
+		alpha_mode = 0;
+		multiplied_mode = 1;
+		break;
+	case BLND_MODE_CURRENT_PIPE:
+	default:
+		if (REG(BLND_CONTROL[blnd_inst]) == REG(BLNDV_CONTROL) ||
+				blnd_inst == 0)
+			feedthrough = 0;
+		break;
+	}
+
+	REG_UPDATE_4(BLND_CONTROL[blnd_inst],
+		BLND_FEEDTHROUGH_EN, feedthrough,
+		BLND_ALPHA_MODE, alpha_mode,
+		BLND_MODE, blnd_mode,
+		BLND_MULTIPLIED_MODE, multiplied_mode);
+}
+
+
+static void dce_disable_sram_shut_down(struct dce_hwseq *hws)
+{
+	if (REG(DC_MEM_GLOBAL_PWR_REQ_CNTL))
+		REG_UPDATE(DC_MEM_GLOBAL_PWR_REQ_CNTL,
+				DC_MEM_GLOBAL_PWR_REQ_DIS, 1);
+}
+
+static void dce_underlay_clock_enable(struct dce_hwseq *hws)
+{
+	/* todo: why do we need this at boot? is dce_enable_fe_clock enough? */
+	if (REG(DCFEV_CLOCK_CONTROL))
+		REG_UPDATE(DCFEV_CLOCK_CONTROL,
+				DCFEV_CLOCK_ENABLE, 1);
+}
+
+static void enable_hw_base_light_sleep(void)
+{
+	/* TODO: implement */
+}
+
+static void disable_sw_manual_control_light_sleep(void)
+{
+	/* TODO: implement */
+}
+
+void dce_clock_gating_power_up(struct dce_hwseq *hws,
+		bool enable)
+{
+	if (enable) {
+		enable_hw_base_light_sleep();
+		disable_sw_manual_control_light_sleep();
+	} else {
+		dce_disable_sram_shut_down(hws);
+		dce_underlay_clock_enable(hws);
+	}
+}
+
+void dce_crtc_switch_to_clk_src(struct dce_hwseq *hws,
+		struct clock_source *clk_src,
+		unsigned int tg_inst)
+{
+	if (clk_src->id == CLOCK_SOURCE_ID_DP_DTO) {
+		REG_UPDATE(PIXEL_RATE_CNTL[tg_inst],
+				DP_DTO0_ENABLE, 1);
+
+	} else if (clk_src->id >= CLOCK_SOURCE_COMBO_PHY_PLL0) {
+		uint32_t rate_source = clk_src->id - CLOCK_SOURCE_COMBO_PHY_PLL0;
+
+		REG_UPDATE_2(PHYPLL_PIXEL_RATE_CNTL[tg_inst],
+				PHYPLL_PIXEL_RATE_SOURCE, rate_source,
+				PIXEL_RATE_PLL_SOURCE, 0);
+
+		REG_UPDATE(PIXEL_RATE_CNTL[tg_inst],
+				DP_DTO0_ENABLE, 0);
+
+	} else if (clk_src->id <= CLOCK_SOURCE_ID_PLL2) {
+		uint32_t rate_source = clk_src->id - CLOCK_SOURCE_ID_PLL0;
+
+		REG_UPDATE_2(PIXEL_RATE_CNTL[tg_inst],
+				PIXEL_RATE_SOURCE, rate_source,
+				DP_DTO0_ENABLE, 0);
+
+		if (REG(PHYPLL_PIXEL_RATE_CNTL[tg_inst]))
+			REG_UPDATE(PHYPLL_PIXEL_RATE_CNTL[tg_inst],
+					PIXEL_RATE_PLL_SOURCE, 1);
+	} else {
+		DC_ERR("unknown clock source");
+	}
+}