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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Cadence MHDP DP MST bridge driver.
*
* Copyright: 2018 Cadence Design Systems, Inc.
*
* Author: Quentin Schulz <quentin.schulz@free-electrons.com>
*/
#ifndef CDNS_MHDP_H
#define CDNS_MHDP_H
#include <drm/drm_dp_mst_helper.h>
#define CDNS_APB_CFG 0x00000
#define CDNS_APB_CTRL (CDNS_APB_CFG + 0x00)
#define CDNS_MAILBOX_FULL (CDNS_APB_CFG + 0x08)
#define CDNS_MAILBOX_EMPTY (CDNS_APB_CFG + 0x0c)
#define CDNS_MAILBOX_TX_DATA (CDNS_APB_CFG + 0x10)
#define CDNS_MAILBOX_RX_DATA (CDNS_APB_CFG + 0x14)
#define CDNS_KEEP_ALIVE (CDNS_APB_CFG + 0x18)
#define CDNS_KEEP_ALIVE_MASK GENMASK(7, 0)
#define CDNS_MB_INT_MASK (CDNS_APB_CFG + 0x34)
#define CDNS_SW_CLK_L (CDNS_APB_CFG + 0x3c)
#define CDNS_SW_CLK_H (CDNS_APB_CFG + 0x40)
#define CDNS_SW_EVENT0 (CDNS_APB_CFG + 0x44)
#define CDNS_DPTX_HPD BIT(0)
#define CDNS_SW_EVENT1 (CDNS_APB_CFG + 0x48)
#define CDNS_SW_EVENT2 (CDNS_APB_CFG + 0x4c)
#define CDNS_SW_EVENT3 (CDNS_APB_CFG + 0x50)
#define CDNS_APB_INT_MASK (CDNS_APB_CFG + 0x6C)
#define CDNS_APB_INT_MASK_MAILBOX_INT BIT(0)
#define CDNS_APB_INT_MASK_SW_EVENT_INT BIT(1)
#define CDNS_DPTX_CAR (CDNS_APB_CFG + 0x904)
#define CDNS_VIF_CLK_EN BIT(0)
#define CDNS_VIF_CLK_RSTN BIT(1)
#define CDNS_SOURCE_VIDEO_IF(s) (0x00b00 + (s * 0x20))
#define CDNS_BND_HSYNC2VSYNC(s) (CDNS_SOURCE_VIDEO_IF(s) + \
0x00)
#define CDNS_IP_DTCT_WIN GENMASK(11, 0)
#define CDNS_IP_DET_INTERLACE_FORMAT BIT(12)
#define CDNS_IP_BYPASS_V_INTERFACE BIT(13)
#define CDNS_HSYNC2VSYNC_POL_CTRL(s) (CDNS_SOURCE_VIDEO_IF(s) + \
0x10)
#define CDNS_H2V_HSYNC_POL_ACTIVE_LOW BIT(1)
#define CDNS_H2V_VSYNC_POL_ACTIVE_LOW BIT(2)
#define CDNS_DPTX_PHY_CONFIG 0x02000
#define CDNS_PHY_TRAINING_EN BIT(0)
#define CDNS_PHY_TRAINING_TYPE(x) (((x) & GENMASK(3, 0)) << 1)
#define CDNS_PHY_SCRAMBLER_BYPASS BIT(5)
#define CDNS_PHY_ENCODER_BYPASS BIT(6)
#define CDNS_PHY_SKEW_BYPASS BIT(7)
#define CDNS_PHY_TRAINING_AUTO BIT(8)
#define CDNS_PHY_LANE0_SKEW(x) (((x) & GENMASK(2, 0)) << 9)
#define CDNS_PHY_LANE1_SKEW(x) (((x) & GENMASK(2, 0)) << 12)
#define CDNS_PHY_LANE2_SKEW(x) (((x) & GENMASK(2, 0)) << 15)
#define CDNS_PHY_LANE3_SKEW(x) (((x) & GENMASK(2, 0)) << 18)
#define CDNS_PHY_COMMON_CONFIG (CDNS_PHY_LANE1_SKEW(1) | \
CDNS_PHY_LANE2_SKEW(2) | \
CDNS_PHY_LANE3_SKEW(3))
#define CDNS_PHY_10BIT_EN BIT(21)
#define CDNS_DPTX_FRAMER 0x02200
#define CDNS_DP_FRAMER_GLOBAL_CONFIG (CDNS_DPTX_FRAMER + 0x00)
#define CDNS_DP_NUM_LANES(x) (x - 1)
#define CDNS_DP_MST_EN BIT(2)
#define CDNS_DP_FRAMER_EN BIT(3)
#define CDNS_DP_RATE_GOVERNOR_EN BIT(4)
#define CDNS_DP_NO_VIDEO_MODE BIT(5)
#define CDNS_DP_DISABLE_PHY_RST BIT(6)
#define CDNS_DP_WR_FAILING_EDGE_VSYNC BIT(7)
#define CDNS_DP_SW_RESET (CDNS_DPTX_FRAMER + 0x04)
#define CDNS_DP_FRAMER_TU (CDNS_DPTX_FRAMER + 0x08)
#define CDNS_DP_FRAMER_TU_SIZE(x) (((x) & GENMASK(6, 0)) << 8)
#define CDNS_DP_FRAMER_TU_VS(x) ((x) & GENMASK(5, 0))
#define CDNS_DP_FRAMER_TU_CNT_RST_EN BIT(15)
#define CDNS_DPTX_STREAM(s) (0x03000 + s * 0x80)
#define CDNS_DP_MSA_HORIZONTAL_0(s) (CDNS_DPTX_STREAM(s) + 0x00)
#define CDNS_DP_MSAH0_H_TOTAL(x) (x)
#define CDNS_DP_MSAH0_HSYNC_START(x) ((x) << 16)
#define CDNS_DP_MSA_HORIZONTAL_1(s) (CDNS_DPTX_STREAM(s) + 0x04)
#define CDNS_DP_MSAH1_HSYNC_WIDTH(x) (x)
#define CDNS_DP_MSAH1_HSYNC_POL_LOW BIT(15)
#define CDNS_DP_MSAH1_HDISP_WIDTH(x) ((x) << 16)
#define CDNS_DP_MSA_VERTICAL_0(s) (CDNS_DPTX_STREAM(s) + 0x08)
#define CDNS_DP_MSAV0_V_TOTAL(x) (x)
#define CDNS_DP_MSAV0_VSYNC_START(x) ((x) << 16)
#define CDNS_DP_MSA_VERTICAL_1(s) (CDNS_DPTX_STREAM(s) + 0x0c)
#define CDNS_DP_MSAV1_VSYNC_WIDTH(x) (x)
#define CDNS_DP_MSAV1_VSYNC_POL_LOW BIT(15)
#define CDNS_DP_MSAV1_VDISP_WIDTH(x) ((x) << 16)
#define CDNS_DP_MSA_MISC(s) (CDNS_DPTX_STREAM(s) + 0x10)
#define CDNS_DP_STREAM_CONFIGs(s) (CDNS_DPTX_STREAM(s) + 0x14)
#define CDNS_DP_STREAM_CONFIG_2(s) (CDNS_DPTX_STREAM(s) + 0x2c)
#define CDNS_DP_SC2_TU_VS_DIFF(x) ((x) << 8)
#define CDNS_DP_HORIZONTAL(s) (CDNS_DPTX_STREAM(s) + 0x30)
#define CDNS_DP_H_HSYNC_WIDTH(x) (x)
#define CDNS_DP_H_H_TOTAL(x) ((x) << 16)
#define CDNS_DP_VERTICAL_0(s) (CDNS_DPTX_STREAM(s) + 0x34)
#define CDNS_DP_V0_VHEIGHT(x) (x)
#define CDNS_DP_V0_VSTART(x) ((x) << 16)
#define CDNS_DP_VERTICAL_1(s) (CDNS_DPTX_STREAM(s) + 0x38)
#define CDNS_DP_V1_VTOTAL(x) (x)
#define CDNS_DP_V1_VTOTAL_EVEN BIT(16)
#define CDNS_DP_FRAMER_PXL_REPR(s) (CDNS_DPTX_STREAM(s) + 0x4c)
#define CDNS_DP_FRAMER_6_BPC BIT(0)
#define CDNS_DP_FRAMER_8_BPC BIT(1)
#define CDNS_DP_FRAMER_10_BPC BIT(2)
#define CDNS_DP_FRAMER_12_BPC BIT(3)
#define CDNS_DP_FRAMER_16_BPC BIT(4)
#define CDNS_DP_FRAMER_PXL_FORMAT 0x8
#define CDNS_DP_FRAMER_RGB BIT(0)
#define CDNS_DP_FRAMER_YCBCR444 BIT(1)
#define CDNS_DP_FRAMER_YCBCR422 BIT(2)
#define CDNS_DP_FRAMER_YCBCR420 BIT(3)
#define CDNS_DP_FRAMER_Y_ONLY BIT(4)
#define CDNS_DP_FRAMER_SP(s) (CDNS_DPTX_STREAM(s) + 0x10)
#define CDNS_DP_FRAMER_VSYNC_POL_LOW BIT(0)
#define CDNS_DP_FRAMER_HSYNC_POL_LOW BIT(1)
#define CDNS_DP_FRAMER_INTERLACE BIT(2)
#define CDNS_DP_LINE_THRESH(s) (CDNS_DPTX_STREAM(s) + 0x64)
#define CDNS_DP_ACTIVE_LINE_THRESH(x) (x)
#define CDNS_DP_VB_ID(s) (CDNS_DPTX_STREAM(s) + 0x68)
#define CDNS_DP_VB_ID_INTERLACED BIT(2)
#define CDNS_DP_VB_ID_COMPRESSED BIT(6)
#define CDNS_DP_FRONT_BACK_PORCH(s) (CDNS_DPTX_STREAM(s) + 0x78)
#define CDNS_DP_BACK_PORCH(x) (x)
#define CDNS_DP_FRONT_PORCH(x) ((x) << 16)
#define CDNS_DP_BYTE_COUNT(s) (CDNS_DPTX_STREAM(s) + 0x7c)
#define CDNS_DP_BYTE_COUNT_BYTES_IN_CHUNK_SHIFT 16
#define CDNS_DP_MST_STREAM_CONFIG(s) (CDNS_DPTX_STREAM(s) + 0x14)
#define CDNS_DP_MST_STRM_CFG_STREAM_EN BIT(0)
#define CDNS_DP_MST_STRM_CFG_NO_VIDEO BIT(1)
#define CDNS_DP_MST_SLOT_ALLOCATE(s) (CDNS_DPTX_STREAM(s) + 0x44)
#define CDNS_DP_S_ALLOC_START_SLOT(x) (x)
#define CDNS_DP_S_ALLOC_END_SLOT(x) ((x) << 8)
#define CDNS_DP_RATE_GOVERNING(s) (CDNS_DPTX_STREAM(s) + 0x48)
#define CDNS_DP_RG_TARG_AV_SLOTS_Y(x) (x)
#define CDNS_DP_RG_TARG_AV_SLOTS_X(x) (x << 4)
#define CDNS_DP_RG_ENABLE BIT(10)
#define CDNS_DP_MTPH_CONTROL 0x2264
#define CDNS_DP_MTPH_ECF_EN BIT(0)
#define CDNS_DP_MTPH_ACT_EN BIT(1)
#define CDNS_DP_MTPH_LVP_EN BIT(2)
#define CDNS_DP_MTPH_STATUS 0x226C
#define CDNS_DP_MTPH_ACT_STATUS BIT(0)
#define CDNS_DPTX_GLOBAL 0x02300
#define CDNS_DP_LANE_EN (CDNS_DPTX_GLOBAL + 0x00)
#define CDNS_DP_LANE_EN_LANES(x) GENMASK(x - 1, 0)
#define CDNS_DP_ENHNCD (CDNS_DPTX_GLOBAL + 0x04)
#define to_mhdp_connector(x) container_of(x, struct cdns_mhdp_connector, base)
#define to_mhdp_bridge(x) container_of(x, struct cdns_mhdp_bridge, base)
#define mgr_to_mhdp(x) container_of(x, struct cdns_mhdp_device, mst_mgr)
#define CDNS_MHDP_MAX_STREAMS 4
#define MAILBOX_RETRY_US 1000
#define MAILBOX_TIMEOUT_US 5000000
#define mhdp_readx_poll_timeout(op, addr, offset, val, cond, sleep_us, timeout_us) \
({ \
u64 __timeout_us = (timeout_us); \
unsigned long __sleep_us = (sleep_us); \
ktime_t __timeout = ktime_add_us(ktime_get(), __timeout_us); \
might_sleep_if((__sleep_us) != 0); \
for (;;) { \
(val) = op(addr, offset); \
if (cond) \
break; \
if (__timeout_us && \
ktime_compare(ktime_get(), __timeout) > 0) { \
(val) = op(addr, offset); \
break; \
} \
if (__sleep_us) \
usleep_range((__sleep_us >> 2) + 1, __sleep_us); \
} \
(cond) ? 0 : -ETIMEDOUT; \
})
enum pixel_format {
PIXEL_FORMAT_RGB = 1,
PIXEL_FORMAT_YCBCR_444 = 2,
PIXEL_FORMAT_YCBCR_422 = 4,
PIXEL_FORMAT_YCBCR_420 = 8,
PIXEL_FORMAT_Y_ONLY = 16,
};
int cdns_mhdp_mst_init(struct cdns_mhdp_device *mhdp);
void cdns_mhdp_mst_deinit(struct cdns_mhdp_device *mhdp);
bool cdns_mhdp_mst_probe(struct cdns_mhdp_device *mhdp);
enum pixel_format cdns_mhdp_get_pxlfmt(u32 color_formats);
u32 cdns_mhdp_get_bpp(u32 bpc, u32 color_formats);
void cdns_mhdp_configure_video(struct drm_bridge *bridge);
void cdns_mhdp_mst_enable(struct drm_bridge *bridge);
void cdns_mhdp_mst_disable(struct drm_bridge *bridge);
void cdns_mhdp_enable(struct drm_bridge *bridge);
#endif
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