drm/bridge: samsung-dsim: add driver support for exynos7870 DSIM bridge

Add support for Exynos7870's DSIM IP block in the bridge driver.

Signed-off-by: Kaustabh Chakraborty <[email protected]>
Signed-off-by: Inki Dae <[email protected]>

Author: Kaustabh Chakraborty

drivers/gpu/drm/bridge/samsung-dsim.c

@@ -244,6 +244,13 @@ static struct clk_bulk_data exynos5433_clk_bulk_data[] = {
 	{ .id = "sclk_rgb_vclk_to_dsim0" },
 };
 
+static struct clk_bulk_data exynos7870_clk_bulk_data[] = {
+	{ .id = "bus" },
+	{ .id = "pll" },
+	{ .id = "byte" },
+	{ .id = "esc" },
+};
+
 enum reg_idx {
 	DSIM_STATUS_REG,	/* Status register (legacy) */
 	DSIM_LINK_STATUS_REG,	/* Link status register */
@@ -320,6 +327,32 @@ static const unsigned int exynos5433_reg_ofs[] = {
 	[DSIM_PHYTIMING2_REG] = 0xBC,
 };
 
+static const unsigned int exynos7870_reg_ofs[] = {
+	[DSIM_LINK_STATUS_REG] = 0x04,
+	[DSIM_DPHY_STATUS_REG] = 0x08,
+	[DSIM_SWRST_REG] = 0x0C,
+	[DSIM_CLKCTRL_REG] = 0x10,
+	[DSIM_TIMEOUT_REG] = 0x14,
+	[DSIM_ESCMODE_REG] = 0x1C,
+	[DSIM_MDRESOL_REG] = 0x20,
+	[DSIM_MVPORCH_REG] = 0x24,
+	[DSIM_MHPORCH_REG] = 0x28,
+	[DSIM_MSYNC_REG] = 0x2C,
+	[DSIM_CONFIG_REG] = 0x30,
+	[DSIM_INTSRC_REG] = 0x34,
+	[DSIM_INTMSK_REG] = 0x38,
+	[DSIM_PKTHDR_REG] = 0x3C,
+	[DSIM_PAYLOAD_REG] = 0x40,
+	[DSIM_RXFIFO_REG] = 0x44,
+	[DSIM_SFRCTRL_REG] = 0x48,
+	[DSIM_FIFOCTRL_REG] = 0x4C,
+	[DSIM_PLLCTRL_REG] = 0x94,
+	[DSIM_PHYCTRL_REG] = 0xA4,
+	[DSIM_PHYTIMING_REG] = 0xB4,
+	[DSIM_PHYTIMING1_REG] = 0xB8,
+	[DSIM_PHYTIMING2_REG] = 0xBC,
+};
+
 enum reg_value_idx {
 	RESET_TYPE,
 	PLL_TIMER,
@@ -392,6 +425,24 @@ static const unsigned int exynos5433_reg_values[] = {
 	[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c),
 };
 
+static const unsigned int exynos7870_reg_values[] = {
+	[RESET_TYPE] = DSIM_SWRST,
+	[PLL_TIMER] = 80000,
+	[STOP_STATE_CNT] = 0xa,
+	[PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x177),
+	[PHYCTRL_VREG_LP] = 0,
+	[PHYCTRL_SLEW_UP] = 0,
+	[PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x07),
+	[PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0c),
+	[PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x08),
+	[PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x2b),
+	[PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d),
+	[PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x09),
+	[PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x09),
+	[PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0f),
+	[PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0c),
+};
+
 static const unsigned int imx8mm_dsim_reg_values[] = {
 	[RESET_TYPE] = DSIM_SWRST,
 	[PLL_TIMER] = 500,
@@ -563,6 +614,36 @@ static const struct samsung_dsim_driver_data exynos5422_dsi_driver_data = {
 	.min_freq = 500,
 };
 
+static const struct samsung_dsim_driver_data exynos7870_dsi_driver_data = {
+	.reg_ofs = exynos7870_reg_ofs,
+	.plltmr_reg = 0xa0,
+	.has_clklane_stop = 1,
+	.has_sfrctrl = 1,
+	.clk_data = exynos7870_clk_bulk_data,
+	.num_clks = ARRAY_SIZE(exynos7870_clk_bulk_data),
+	.max_freq = 1500,
+	.wait_for_hdr_fifo = 0,
+	.wait_for_reset = 1,
+	.num_bits_resol = 12,
+	.video_mode_bit = 18,
+	.pll_stable_bit = 24,
+	.esc_clken_bit = 16,
+	.byte_clken_bit = 17,
+	.tx_req_hsclk_bit = 20,
+	.lane_esc_clk_bit = 8,
+	.lane_esc_data_offset = 9,
+	.pll_p_offset = 13,
+	.pll_m_offset = 3,
+	.pll_s_offset = 0,
+	.main_vsa_offset = 16,
+	.reg_values = exynos7870_reg_values,
+	.pll_fin_min = 6,
+	.pll_fin_max = 12,
+	.m_min = 41,
+	.m_max = 125,
+	.min_freq = 500,
+};
+
 static const struct samsung_dsim_driver_data imx8mm_dsi_driver_data = {
 	.reg_ofs = exynos5433_reg_ofs,
 	.plltmr_reg = 0xa0,
@@ -604,6 +685,7 @@ samsung_dsim_types[DSIM_TYPE_COUNT] = {
 	[DSIM_TYPE_EXYNOS5410] = &exynos5_dsi_driver_data,
 	[DSIM_TYPE_EXYNOS5422] = &exynos5422_dsi_driver_data,
 	[DSIM_TYPE_EXYNOS5433] = &exynos5433_dsi_driver_data,
+	[DSIM_TYPE_EXYNOS7870] = &exynos7870_dsi_driver_data,
 	[DSIM_TYPE_IMX8MM] = &imx8mm_dsi_driver_data,
 	[DSIM_TYPE_IMX8MP] = &imx8mm_dsi_driver_data,
 };

include/drm/bridge/samsung-dsim.h

@@ -29,6 +29,7 @@ enum samsung_dsim_type {
 	DSIM_TYPE_EXYNOS5410,
 	DSIM_TYPE_EXYNOS5422,
 	DSIM_TYPE_EXYNOS5433,
+	DSIM_TYPE_EXYNOS7870,
 	DSIM_TYPE_IMX8MM,
 	DSIM_TYPE_IMX8MP,
 	DSIM_TYPE_COUNT,