Merge branch 'drm-next-4.15-dc' of git://people.freedesktop.org/~agd5f/linux into drm-next

Initial pull request for DC support.  We've completed a substantial amount of
the cleanup and restructuring in our TODO.  There are a few additional
cleanups that we are continuing to work on, but I don't think there are any
showstoppers remaining. We've tried to maintain most of the history for bisect
purposes.  Harry made sure all the commits build.  We've enabled DC for vega10
and Raven.  Pre-vega10 parts can be enabled via module parameter (amdgpu.dc=1),
but are not enabled by default at this point until we get further testing
upstream.

This code provides atomic modesetting support for DCE8 (CIK), DCE10 (Tonga,
Fiji), DCE11 (CZ, ST, Polaris), DCE12 (vega10), and DCN1 (RV) including
HDMI and DP audio, DP MST, and many other advanced display features.

+

Latest cleanups for DC from you and Harry.  Note that there is some
flickering on some older asics with this branch due to a regression in powerplay
that has already been fixed and will be included in my next non-DC pull request
next week.

* 'drm-next-4.15-dc' of git://people.freedesktop.org/~agd5f/linux: (897 commits)
  amdgpu/dc: use kref for dc_state.
  amdgpu/dc: convert dc_sink to kref.
  amdgpu/dc: convert dc_stream_state to kref.
  amdgpu/dc: use kref for dc_plane_state.
  amdgpu/dc: convert dc_gamma to kref reference counting.
  amdgpu/dc: convert dc_transfer to use a kref.
  amdgpu/dc: kill a bunch of dead code.
  amdgpu/dc: set a bunch of functions to static.
  amdgpu/dc: kill some deadcode in dc core.
  amdgpu/dc: fix indentation on a couple of returns.
  amdgpu/dm: don't use after free.
  amdgpu/dc: kfree already checks for NULL.
  amdgpu/dc: fix a bunch of misc whitespace.
  amdgpu/dc: drop hw_sequencer_types.h
  amdgpu/dc: drop dce110_types.h
  amdgpu/dc: use kernel ilog2 for log_2.
  amdgpu/dc: don't memset after kzalloc.
  amdgpu/dc: inline dal grph object id functions.
  amdgpu/dc: inline dml_round_to_multiple
  amdgpu/dc: rename bios get_image symbol to something more searchable.
  ...

1 files changed, 182 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/inc/clock_source.h b/drivers/gpu/drm/amd/display/dc/inc/clock_source.h
new file mode 100644
index 000000000000..ebcf67b5fc57
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/inc/clock_source.h
@@ -0,0 +1,182 @@
+/*
+ * 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 __DC_CLOCK_SOURCE_H__
+#define __DC_CLOCK_SOURCE_H__
+
+#include "dc_types.h"
+#include "include/grph_object_id.h"
+#include "include/bios_parser_types.h"
+
+struct clock_source;
+
+struct spread_spectrum_data {
+	uint32_t percentage;		/*> In unit of 0.01% or 0.001%*/
+	uint32_t percentage_divider;	/*> 100 or 1000	*/
+	uint32_t freq_range_khz;
+	uint32_t modulation_freq_hz;
+
+	struct spread_spectrum_flags flags;
+};
+
+struct delta_sigma_data {
+	uint32_t feedback_amount;
+	uint32_t nfrac_amount;
+	uint32_t ds_frac_size;
+	uint32_t ds_frac_amount;
+};
+
+/**
+ *  Pixel Clock Parameters structure
+ *  These parameters are required as input
+ *  when calculating Pixel Clock Dividers for requested Pixel Clock
+ */
+struct pixel_clk_flags {
+	uint32_t ENABLE_SS:1;
+	uint32_t DISPLAY_BLANKED:1;
+	uint32_t PROGRAM_PIXEL_CLOCK:1;
+	uint32_t PROGRAM_ID_CLOCK:1;
+	uint32_t SUPPORT_YCBCR420:1;
+};
+
+/**
+ *  Display Port HW De spread of Reference Clock related Parameters structure
+ *  Store it once at boot for later usage
+  */
+struct csdp_ref_clk_ds_params {
+	bool hw_dso_n_dp_ref_clk;
+/* Flag for HW De Spread enabled (if enabled SS on DP Reference Clock)*/
+	uint32_t avg_dp_ref_clk_khz;
+/* Average DP Reference clock (in KHz)*/
+	uint32_t ss_percentage_on_dp_ref_clk;
+/* DP Reference clock SS percentage
+ * (not to be mixed with DP IDCLK SS from PLL Settings)*/
+	uint32_t ss_percentage_divider;
+/* DP Reference clock SS percentage divider */
+};
+
+struct pixel_clk_params {
+	uint32_t requested_pix_clk; /* in KHz */
+/*> Requested Pixel Clock
+ * (based on Video Timing standard used for requested mode)*/
+	uint32_t requested_sym_clk; /* in KHz */
+/*> Requested Sym Clock (relevant only for display port)*/
+	uint32_t dp_ref_clk; /* in KHz */
+/*> DP reference clock - calculated only for DP signal for specific cases*/
+	struct graphics_object_id encoder_object_id;
+/*> Encoder object Id - needed by VBIOS Exec table*/
+	enum signal_type signal_type;
+/*> signalType -> Encoder Mode - needed by VBIOS Exec table*/
+	enum controller_id controller_id;
+/*> ControllerId - which controller using this PLL*/
+	enum dc_color_depth color_depth;
+	struct csdp_ref_clk_ds_params de_spread_params;
+/*> de-spread info, relevant only for on-the-fly tune-up pixel rate*/
+	enum dc_pixel_encoding pixel_encoding;
+	struct pixel_clk_flags flags;
+};
+
+/**
+ *  Pixel Clock Dividers structure with desired Pixel Clock
+ *  (adjusted after VBIOS exec table),
+ *  with actually calculated Clock and reference Crystal frequency
+ */
+struct pll_settings {
+	uint32_t actual_pix_clk;
+	uint32_t adjusted_pix_clk;
+	uint32_t calculated_pix_clk;
+	uint32_t vco_freq;
+	uint32_t reference_freq;
+	uint32_t reference_divider;
+	uint32_t feedback_divider;
+	uint32_t fract_feedback_divider;
+	uint32_t pix_clk_post_divider;
+	uint32_t ss_percentage;
+	bool use_external_clk;
+};
+
+struct calc_pll_clock_source_init_data {
+	struct dc_bios *bp;
+	uint32_t min_pix_clk_pll_post_divider;
+	uint32_t max_pix_clk_pll_post_divider;
+	uint32_t min_pll_ref_divider;
+	uint32_t max_pll_ref_divider;
+	uint32_t min_override_input_pxl_clk_pll_freq_khz;
+/* if not 0, override the firmware info */
+
+	uint32_t max_override_input_pxl_clk_pll_freq_khz;
+/* if not 0, override the firmware info */
+
+	uint32_t num_fract_fb_divider_decimal_point;
+/* number of decimal point for fractional feedback divider value */
+
+	uint32_t num_fract_fb_divider_decimal_point_precision;
+/* number of decimal point to round off for fractional feedback divider value*/
+	struct dc_context *ctx;
+
+};
+
+struct calc_pll_clock_source {
+	uint32_t ref_freq_khz;
+	uint32_t min_pix_clock_pll_post_divider;
+	uint32_t max_pix_clock_pll_post_divider;
+	uint32_t min_pll_ref_divider;
+	uint32_t max_pll_ref_divider;
+
+	uint32_t max_vco_khz;
+	uint32_t min_vco_khz;
+	uint32_t min_pll_input_freq_khz;
+	uint32_t max_pll_input_freq_khz;
+
+	uint32_t fract_fb_divider_decimal_points_num;
+	uint32_t fract_fb_divider_factor;
+	uint32_t fract_fb_divider_precision;
+	uint32_t fract_fb_divider_precision_factor;
+	struct dc_context *ctx;
+};
+
+struct clock_source_funcs {
+	bool (*cs_power_down)(
+			struct clock_source *);
+	bool (*program_pix_clk)(struct clock_source *,
+			struct pixel_clk_params *, struct pll_settings *);
+	uint32_t (*get_pix_clk_dividers)(
+			struct clock_source *,
+			struct pixel_clk_params *,
+			struct pll_settings *);
+	uint32_t (*get_pix_rate_in_hz)(
+			struct clock_source *,
+			struct pixel_clk_params *,
+			struct pll_settings *);
+};
+
+struct clock_source {
+	const struct clock_source_funcs *funcs;
+	struct dc_context *ctx;
+	enum clock_source_id id;
+	bool dp_clk_src;
+};
+
+#endif