1 files changed, 268 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_ipp.c b/drivers/gpu/drm/amd/display/dc/dce/dce_ipp.c
new file mode 100644
index 000000000000..d618fdd0cc82
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_ipp.c
@@ -0,0 +1,268 @@
+/*
+ * Copyright 2017 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_ipp.h"
+#include "reg_helper.h"
+#include "dm_services.h"
+
+#define REG(reg) \
+	(ipp_dce->regs->reg)
+
+#undef FN
+#define FN(reg_name, field_name) \
+	ipp_dce->ipp_shift->field_name, ipp_dce->ipp_mask->field_name
+
+#define CTX \
+	ipp_dce->base.ctx
+
+
+static void dce_ipp_cursor_set_position(
+	struct input_pixel_processor *ipp,
+	const struct dc_cursor_position *position,
+	const struct dc_cursor_mi_param *param)
+{
+	struct dce_ipp *ipp_dce = TO_DCE_IPP(ipp);
+
+	/* lock cursor registers */
+	REG_UPDATE(CUR_UPDATE, CURSOR_UPDATE_LOCK, true);
+
+	/* Flag passed in structure differentiates cursor enable/disable. */
+	/* Update if it differs from cached state. */
+	REG_UPDATE(CUR_CONTROL, CURSOR_EN, position->enable);
+
+	REG_SET_2(CUR_POSITION, 0,
+		CURSOR_X_POSITION, position->x,
+		CURSOR_Y_POSITION, position->y);
+
+	REG_SET_2(CUR_HOT_SPOT, 0,
+		CURSOR_HOT_SPOT_X, position->x_hotspot,
+		CURSOR_HOT_SPOT_Y, position->y_hotspot);
+
+	/* unlock cursor registers */
+	REG_UPDATE(CUR_UPDATE, CURSOR_UPDATE_LOCK, false);
+}
+
+static void dce_ipp_cursor_set_attributes(
+	struct input_pixel_processor *ipp,
+	const struct dc_cursor_attributes *attributes)
+{
+	struct dce_ipp *ipp_dce = TO_DCE_IPP(ipp);
+	int mode;
+
+	/* Lock cursor registers */
+	REG_UPDATE(CUR_UPDATE, CURSOR_UPDATE_LOCK, true);
+
+	/* Program cursor control */
+	switch (attributes->color_format) {
+	case CURSOR_MODE_MONO:
+		mode = 0;
+		break;
+	case CURSOR_MODE_COLOR_1BIT_AND:
+		mode = 1;
+		break;
+	case CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA:
+		mode = 2;
+		break;
+	case CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA:
+		mode = 3;
+		break;
+	default:
+		BREAK_TO_DEBUGGER(); /* unsupported */
+		mode = 0;
+	}
+
+	REG_UPDATE_3(CUR_CONTROL,
+		CURSOR_MODE, mode,
+		CURSOR_2X_MAGNIFY, attributes->attribute_flags.bits.ENABLE_MAGNIFICATION,
+		CUR_INV_TRANS_CLAMP, attributes->attribute_flags.bits.INVERSE_TRANSPARENT_CLAMPING);
+
+	if (attributes->color_format == CURSOR_MODE_MONO) {
+		REG_SET_3(CUR_COLOR1, 0,
+			CUR_COLOR1_BLUE, 0,
+			CUR_COLOR1_GREEN, 0,
+			CUR_COLOR1_RED, 0);
+
+		REG_SET_3(CUR_COLOR2, 0,
+			CUR_COLOR2_BLUE, 0xff,
+			CUR_COLOR2_GREEN, 0xff,
+			CUR_COLOR2_RED, 0xff);
+	}
+
+	/*
+	 * Program cursor size -- NOTE: HW spec specifies that HW register
+	 * stores size as (height - 1, width - 1)
+	 */
+	REG_SET_2(CUR_SIZE, 0,
+		CURSOR_WIDTH, attributes->width-1,
+		CURSOR_HEIGHT, attributes->height-1);
+
+	/* Program cursor surface address */
+	/* SURFACE_ADDRESS_HIGH: Higher order bits (39:32) of hardware cursor
+	 * surface base address in byte. It is 4K byte aligned.
+	 * The correct way to program cursor surface address is to first write
+	 * to CUR_SURFACE_ADDRESS_HIGH, and then write to CUR_SURFACE_ADDRESS
+	 */
+	REG_SET(CUR_SURFACE_ADDRESS_HIGH, 0,
+		CURSOR_SURFACE_ADDRESS_HIGH, attributes->address.high_part);
+
+	REG_SET(CUR_SURFACE_ADDRESS, 0,
+		CURSOR_SURFACE_ADDRESS, attributes->address.low_part);
+
+	/* Unlock Cursor registers. */
+	REG_UPDATE(CUR_UPDATE, CURSOR_UPDATE_LOCK, false);
+}
+
+
+static void dce_ipp_program_prescale(
+	struct input_pixel_processor *ipp,
+	struct ipp_prescale_params *params)
+{
+	struct dce_ipp *ipp_dce = TO_DCE_IPP(ipp);
+
+	/* set to bypass mode first before change */
+	REG_UPDATE(PRESCALE_GRPH_CONTROL,
+		GRPH_PRESCALE_BYPASS,
+		1);
+
+	REG_SET_2(PRESCALE_VALUES_GRPH_R, 0,
+		GRPH_PRESCALE_SCALE_R, params->scale,
+		GRPH_PRESCALE_BIAS_R, params->bias);
+
+	REG_SET_2(PRESCALE_VALUES_GRPH_G, 0,
+		GRPH_PRESCALE_SCALE_G, params->scale,
+		GRPH_PRESCALE_BIAS_G, params->bias);
+
+	REG_SET_2(PRESCALE_VALUES_GRPH_B, 0,
+		GRPH_PRESCALE_SCALE_B, params->scale,
+		GRPH_PRESCALE_BIAS_B, params->bias);
+
+	if (params->mode != IPP_PRESCALE_MODE_BYPASS) {
+		REG_UPDATE(PRESCALE_GRPH_CONTROL,
+				GRPH_PRESCALE_BYPASS, 0);
+
+		/* If prescale is in use, then legacy lut should be bypassed */
+		REG_UPDATE(INPUT_GAMMA_CONTROL,
+				GRPH_INPUT_GAMMA_MODE, 1);
+	}
+}
+
+static void dce_ipp_program_input_lut(
+	struct input_pixel_processor *ipp,
+	const struct dc_gamma *gamma)
+{
+	int i;
+	struct dce_ipp *ipp_dce = TO_DCE_IPP(ipp);
+
+	/* power on LUT memory */
+	if (REG(DCFE_MEM_PWR_CTRL))
+		REG_SET(DCFE_MEM_PWR_CTRL, 0, DCP_LUT_MEM_PWR_DIS, 1);
+
+	/* enable all */
+	REG_SET(DC_LUT_WRITE_EN_MASK, 0, DC_LUT_WRITE_EN_MASK, 0x7);
+
+	/* 256 entry mode */
+	REG_UPDATE(DC_LUT_RW_MODE, DC_LUT_RW_MODE, 0);
+
+	/* LUT-256, unsigned, integer, new u0.12 format */
+	REG_SET_3(DC_LUT_CONTROL, 0,
+		DC_LUT_DATA_R_FORMAT, 3,
+		DC_LUT_DATA_G_FORMAT, 3,
+		DC_LUT_DATA_B_FORMAT, 3);
+
+	/* start from index 0 */
+	REG_SET(DC_LUT_RW_INDEX, 0,
+		DC_LUT_RW_INDEX, 0);
+
+	for (i = 0; i < gamma->num_entries; i++) {
+		REG_SET(DC_LUT_SEQ_COLOR, 0, DC_LUT_SEQ_COLOR,
+				dal_fixed31_32_round(
+					gamma->entries.red[i]));
+		REG_SET(DC_LUT_SEQ_COLOR, 0, DC_LUT_SEQ_COLOR,
+				dal_fixed31_32_round(
+					gamma->entries.green[i]));
+		REG_SET(DC_LUT_SEQ_COLOR, 0, DC_LUT_SEQ_COLOR,
+				dal_fixed31_32_round(
+					gamma->entries.blue[i]));
+	}
+
+	/* power off LUT memory */
+	if (REG(DCFE_MEM_PWR_CTRL))
+		REG_SET(DCFE_MEM_PWR_CTRL, 0, DCP_LUT_MEM_PWR_DIS, 0);
+
+	/* bypass prescale, enable legacy LUT */
+	REG_UPDATE(PRESCALE_GRPH_CONTROL, GRPH_PRESCALE_BYPASS, 1);
+	REG_UPDATE(INPUT_GAMMA_CONTROL, GRPH_INPUT_GAMMA_MODE, 0);
+}
+
+static void dce_ipp_set_degamma(
+	struct input_pixel_processor *ipp,
+	enum ipp_degamma_mode mode)
+{
+	struct dce_ipp *ipp_dce = TO_DCE_IPP(ipp);
+	uint32_t degamma_type = (mode == IPP_DEGAMMA_MODE_HW_sRGB) ? 1 : 0;
+
+	ASSERT(mode == IPP_DEGAMMA_MODE_BYPASS ||
+			mode == IPP_DEGAMMA_MODE_HW_sRGB);
+
+	REG_SET_3(DEGAMMA_CONTROL, 0,
+		GRPH_DEGAMMA_MODE, degamma_type,
+		CURSOR_DEGAMMA_MODE, degamma_type,
+		CURSOR2_DEGAMMA_MODE, degamma_type);
+}
+
+static const struct ipp_funcs dce_ipp_funcs = {
+	.ipp_cursor_set_attributes = dce_ipp_cursor_set_attributes,
+	.ipp_cursor_set_position = dce_ipp_cursor_set_position,
+	.ipp_program_prescale = dce_ipp_program_prescale,
+	.ipp_program_input_lut = dce_ipp_program_input_lut,
+	.ipp_set_degamma = dce_ipp_set_degamma
+};
+
+/*****************************************/
+/* Constructor, Destructor               */
+/*****************************************/
+
+void dce_ipp_construct(
+	struct dce_ipp *ipp_dce,
+	struct dc_context *ctx,
+	int inst,
+	const struct dce_ipp_registers *regs,
+	const struct dce_ipp_shift *ipp_shift,
+	const struct dce_ipp_mask *ipp_mask)
+{
+	ipp_dce->base.ctx = ctx;
+	ipp_dce->base.inst = inst;
+	ipp_dce->base.funcs = &dce_ipp_funcs;
+
+	ipp_dce->regs = regs;
+	ipp_dce->ipp_shift = ipp_shift;
+	ipp_dce->ipp_mask = ipp_mask;
+}
+
+void dce_ipp_destroy(struct input_pixel_processor **ipp)
+{
+	kfree(TO_DCE_IPP(*ipp));
+	*ipp = NULL;
+}