Exynos MIPI DSI driver uses some static values such as address offsets, register setting values, and etc. This patch makes the driver get those values from the driver data.
Signed-off-by: Hyungwon Hwang human.hwang@samsung.com --- Changes before: - Refer https://patchwork.kernel.org/patch/6191731 Changes for v6: - None
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 196 +++++++++++++++++++++++--------- 1 file changed, 145 insertions(+), 51 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 70367d0..0b468d7 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -34,38 +34,6 @@ /* returns true iff both arguments logically differs */ #define NEQV(a, b) (!(a) ^ !(b))
-#define DSIM_STATUS_REG 0x0 /* Status register */ -#define DSIM_SWRST_REG 0x4 /* Software reset register */ -#define DSIM_CLKCTRL_REG 0x8 /* Clock control register */ -#define DSIM_TIMEOUT_REG 0xc /* Time out register */ -#define DSIM_CONFIG_REG 0x10 /* Configuration register */ -#define DSIM_ESCMODE_REG 0x14 /* Escape mode register */ - -/* Main display image resolution register */ -#define DSIM_MDRESOL_REG 0x18 -#define DSIM_MVPORCH_REG 0x1c /* Main display Vporch register */ -#define DSIM_MHPORCH_REG 0x20 /* Main display Hporch register */ -#define DSIM_MSYNC_REG 0x24 /* Main display sync area register */ - -/* Sub display image resolution register */ -#define DSIM_SDRESOL_REG 0x28 -#define DSIM_INTSRC_REG 0x2c /* Interrupt source register */ -#define DSIM_INTMSK_REG 0x30 /* Interrupt mask register */ -#define DSIM_PKTHDR_REG 0x34 /* Packet Header FIFO register */ -#define DSIM_PAYLOAD_REG 0x38 /* Payload FIFO register */ -#define DSIM_RXFIFO_REG 0x3c /* Read FIFO register */ -#define DSIM_FIFOTHLD_REG 0x40 /* FIFO threshold level register */ -#define DSIM_FIFOCTRL_REG 0x44 /* FIFO status and control register */ - -/* FIFO memory AC characteristic register */ -#define DSIM_PLLCTRL_REG 0x4c /* PLL control register */ -#define DSIM_PHYACCHR_REG 0x54 /* D-PHY AC characteristic register */ -#define DSIM_PHYACCHR1_REG 0x58 /* D-PHY AC characteristic register1 */ -#define DSIM_PHYCTRL_REG 0x5c -#define DSIM_PHYTIMING_REG 0x64 -#define DSIM_PHYTIMING1_REG 0x68 -#define DSIM_PHYTIMING2_REG 0x6c - /* DSIM_STATUS */ #define DSIM_STOP_STATE_DAT(x) (((x) & 0xf) << 0) #define DSIM_STOP_STATE_CLK (1 << 8) @@ -129,8 +97,8 @@
/* DSIM_MDRESOL */ #define DSIM_MAIN_STAND_BY (1 << 31) -#define DSIM_MAIN_VRESOL(x) (((x) & 0x7ff) << 16) -#define DSIM_MAIN_HRESOL(x) (((x) & 0X7ff) << 0) +#define DSIM_MAIN_VRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 16) +#define DSIM_MAIN_HRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 0)
/* DSIM_MVPORCH */ #define DSIM_CMD_ALLOW(x) ((x) << 28) @@ -237,8 +205,11 @@
#define OLD_SCLK_MIPI_CLK_NAME "pll_clk"
-#define DSI_WRITE(dsi, reg, val) writel((val), (dsi)->reg_base + (reg)) -#define DSI_READ(dsi, reg) readl((dsi)->reg_base + (reg)) +#define REG_ADDR(dsi, reg_idx) ((dsi)->reg_base + \ + dsi->driver_data->reg_ofs[(reg_idx)]) +#define DSI_WRITE(dsi, reg_idx, val) writel((val), \ + REG_ADDR((dsi), (reg_idx))) +#define DSI_READ(dsi, reg_idx) readl(REG_ADDR((dsi), (reg_idx)))
enum exynos_dsi_transfer_type { EXYNOS_DSI_TX, @@ -268,10 +239,15 @@ struct exynos_dsi_transfer { #define DSIM_STATE_VIDOUT_AVAILABLE BIT(3)
struct exynos_dsi_driver_data { + unsigned int *reg_ofs; unsigned int plltmr_reg; - unsigned int has_freqband:1; unsigned int has_clklane_stop:1; + unsigned int num_clks; + unsigned int max_freq; + unsigned int wait_for_reset; + unsigned int num_bits_resol; + unsigned int *reg_values; };
struct exynos_dsi { @@ -316,25 +292,133 @@ static inline struct exynos_dsi *display_to_dsi(struct exynos_drm_display *d) return container_of(d, struct exynos_dsi, display); }
+enum reg_idx { + DSIM_STATUS_REG, /* Status register */ + DSIM_SWRST_REG, /* Software reset register */ + DSIM_CLKCTRL_REG, /* Clock control register */ + DSIM_TIMEOUT_REG, /* Time out register */ + DSIM_CONFIG_REG, /* Configuration register */ + DSIM_ESCMODE_REG, /* Escape mode register */ + DSIM_MDRESOL_REG, + DSIM_MVPORCH_REG, /* Main display Vporch register */ + DSIM_MHPORCH_REG, /* Main display Hporch register */ + DSIM_MSYNC_REG, /* Main display sync area register */ + DSIM_INTSRC_REG, /* Interrupt source register */ + DSIM_INTMSK_REG, /* Interrupt mask register */ + DSIM_PKTHDR_REG, /* Packet Header FIFO register */ + DSIM_PAYLOAD_REG, /* Payload FIFO register */ + DSIM_RXFIFO_REG, /* Read FIFO register */ + DSIM_FIFOCTRL_REG, /* FIFO status and control register */ + DSIM_PLLCTRL_REG, /* PLL control register */ + DSIM_PHYCTRL_REG, + DSIM_PHYTIMING_REG, + DSIM_PHYTIMING1_REG, + DSIM_PHYTIMING2_REG, + NUM_REGS +}; +static unsigned int exynos_reg_ofs[] = { + [DSIM_STATUS_REG] = 0x00, + [DSIM_SWRST_REG] = 0x04, + [DSIM_CLKCTRL_REG] = 0x08, + [DSIM_TIMEOUT_REG] = 0x0c, + [DSIM_CONFIG_REG] = 0x10, + [DSIM_ESCMODE_REG] = 0x14, + [DSIM_MDRESOL_REG] = 0x18, + [DSIM_MVPORCH_REG] = 0x1c, + [DSIM_MHPORCH_REG] = 0x20, + [DSIM_MSYNC_REG] = 0x24, + [DSIM_INTSRC_REG] = 0x2c, + [DSIM_INTMSK_REG] = 0x30, + [DSIM_PKTHDR_REG] = 0x34, + [DSIM_PAYLOAD_REG] = 0x38, + [DSIM_RXFIFO_REG] = 0x3c, + [DSIM_FIFOCTRL_REG] = 0x44, + [DSIM_PLLCTRL_REG] = 0x4c, + [DSIM_PHYCTRL_REG] = 0x5c, + [DSIM_PHYTIMING_REG] = 0x64, + [DSIM_PHYTIMING1_REG] = 0x68, + [DSIM_PHYTIMING2_REG] = 0x6c, +}; + +enum reg_value_idx { + RESET_TYPE, + PLL_TIMER, + STOP_STATE_CNT, + PHYCTRL_ULPS_EXIT, + PHYCTRL_VREG_LP, + PHYCTRL_SLEW_UP, + PHYTIMING_LPX, + PHYTIMING_HS_EXIT, + PHYTIMING_CLK_PREPARE, + PHYTIMING_CLK_ZERO, + PHYTIMING_CLK_POST, + PHYTIMING_CLK_TRAIL, + PHYTIMING_HS_PREPARE, + PHYTIMING_HS_ZERO, + PHYTIMING_HS_TRAIL +}; + +static unsigned int reg_values[] = { + [RESET_TYPE] = DSIM_SWRST, + [PLL_TIMER] = 500, + [STOP_STATE_CNT] = 0xf, + [PHYCTRL_ULPS_EXIT] = DSIM_PHYCTRL_ULPS_EXIT(0x0af), + [PHYCTRL_VREG_LP] = 0, + [PHYCTRL_SLEW_UP] = 0, + [PHYTIMING_LPX] = DSIM_PHYTIMING_LPX(0x06), + [PHYTIMING_HS_EXIT] = DSIM_PHYTIMING_HS_EXIT(0x0b), + [PHYTIMING_CLK_PREPARE] = DSIM_PHYTIMING1_CLK_PREPARE(0x07), + [PHYTIMING_CLK_ZERO] = DSIM_PHYTIMING1_CLK_ZERO(0x27), + [PHYTIMING_CLK_POST] = DSIM_PHYTIMING1_CLK_POST(0x0d), + [PHYTIMING_CLK_TRAIL] = DSIM_PHYTIMING1_CLK_TRAIL(0x08), + [PHYTIMING_HS_PREPARE] = DSIM_PHYTIMING2_HS_PREPARE(0x09), + [PHYTIMING_HS_ZERO] = DSIM_PHYTIMING2_HS_ZERO(0x0d), + [PHYTIMING_HS_TRAIL] = DSIM_PHYTIMING2_HS_TRAIL(0x0b), +}; + static struct exynos_dsi_driver_data exynos3_dsi_driver_data = { + .reg_ofs = exynos_reg_ofs, .plltmr_reg = 0x50, .has_freqband = 1, .has_clklane_stop = 1, + .num_clks = 2, + .max_freq = 1000, + .wait_for_reset = 1, + .num_bits_resol = 11, + .reg_values = reg_values, };
static struct exynos_dsi_driver_data exynos4_dsi_driver_data = { + .reg_ofs = exynos_reg_ofs, .plltmr_reg = 0x50, .has_freqband = 1, .has_clklane_stop = 1, + .num_clks = 2, + .max_freq = 1000, + .wait_for_reset = 1, + .num_bits_resol = 11, + .reg_values = reg_values, };
static struct exynos_dsi_driver_data exynos4415_dsi_driver_data = { + .reg_ofs = exynos_reg_ofs, .plltmr_reg = 0x58, .has_clklane_stop = 1, + .num_clks = 2, + .max_freq = 1000, + .wait_for_reset = 1, + .num_bits_resol = 11, + .reg_values = reg_values, };
static struct exynos_dsi_driver_data exynos5_dsi_driver_data = { + .reg_ofs = exynos_reg_ofs, .plltmr_reg = 0x58, + .num_clks = 2, + .max_freq = 1000, + .wait_for_reset = 1, + .num_bits_resol = 11, + .reg_values = reg_values, };
static struct of_device_id exynos_dsi_of_match[] = { @@ -371,7 +455,7 @@ static void exynos_dsi_reset(struct exynos_dsi *dsi) struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
reinit_completion(&dsi->completed); - DSI_WRITE(dsi, DSIM_SWRST_REG, DSIM_SWRST); + DSI_WRITE(dsi, DSIM_SWRST_REG, driver_data->reg_values[RESET_TYPE]); }
#ifndef MHZ @@ -405,7 +489,8 @@ static unsigned long exynos_dsi_pll_find_pms(struct exynos_dsi *dsi,
tmp = (u64)_m * fin; do_div(tmp, _p); - if (tmp < 500 * MHZ || tmp > 1000 * MHZ) + if (tmp < 500 * MHZ || + tmp > driver_data->max_freq * MHZ) continue;
tmp = (u64)_m * fin; @@ -450,7 +535,8 @@ static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi, } dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s);
- writel(500, dsi->reg_base + driver_data->plltmr_reg); + writel(driver_data->reg_values[PLL_TIMER], + dsi->reg_base + driver_data->plltmr_reg);
reg = DSIM_PLL_EN | DSIM_PLL_P(p) | DSIM_PLL_M(m) | DSIM_PLL_S(s);
@@ -528,13 +614,15 @@ static int exynos_dsi_enable_clock(struct exynos_dsi *dsi) static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi) { struct exynos_dsi_driver_data *driver_data = dsi->driver_data; + unsigned int *reg_values = driver_data->reg_values; u32 reg;
if (driver_data->has_freqband) return;
/* B D-PHY: D-PHY Master & Slave Analog Block control */ - reg = DSIM_PHYCTRL_ULPS_EXIT(0x0af); + reg = reg_values[PHYCTRL_ULPS_EXIT] | reg_values[PHYCTRL_VREG_LP] | + reg_values[PHYCTRL_SLEW_UP]; DSI_WRITE(dsi, DSIM_PHYCTRL_REG, reg);
/* @@ -542,7 +630,7 @@ static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi) * T HS-EXIT: Time that the transmitter drives LP-11 following a HS * burst */ - reg = DSIM_PHYTIMING_LPX(0x06) | DSIM_PHYTIMING_HS_EXIT(0x0b); + reg = reg_values[PHYTIMING_LPX] | reg_values[PHYTIMING_HS_EXIT]; DSI_WRITE(dsi, DSIM_PHYTIMING_REG, reg);
/* @@ -558,10 +646,11 @@ static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi) * T CLK-TRAIL: Time that the transmitter drives the HS-0 state after * the last payload clock bit of a HS transmission burst */ - reg = DSIM_PHYTIMING1_CLK_PREPARE(0x07) | - DSIM_PHYTIMING1_CLK_ZERO(0x27) | - DSIM_PHYTIMING1_CLK_POST(0x0d) | - DSIM_PHYTIMING1_CLK_TRAIL(0x08); + reg = reg_values[PHYTIMING_CLK_PREPARE] | + reg_values[PHYTIMING_CLK_ZERO] | + reg_values[PHYTIMING_CLK_POST] | + reg_values[PHYTIMING_CLK_TRAIL]; + DSI_WRITE(dsi, DSIM_PHYTIMING1_REG, reg);
/* @@ -573,8 +662,8 @@ static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi) * T HS-TRAIL: Time that the transmitter drives the flipped differential * state after last payload data bit of a HS transmission burst */ - reg = DSIM_PHYTIMING2_HS_PREPARE(0x09) | DSIM_PHYTIMING2_HS_ZERO(0x0d) | - DSIM_PHYTIMING2_HS_TRAIL(0x0b); + reg = reg_values[PHYTIMING_HS_PREPARE] | reg_values[PHYTIMING_HS_ZERO] | + reg_values[PHYTIMING_HS_TRAIL]; DSI_WRITE(dsi, DSIM_PHYTIMING2_REG, reg); }
@@ -705,7 +794,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi)
reg = DSI_READ(dsi, DSIM_ESCMODE_REG); reg &= ~DSIM_STOP_STATE_CNT_MASK; - reg |= DSIM_STOP_STATE_CNT(0xf); + reg |= DSIM_STOP_STATE_CNT(driver_data->reg_values[STOP_STATE_CNT]); DSI_WRITE(dsi, DSIM_ESCMODE_REG, reg);
reg = DSIM_BTA_TIMEOUT(0xff) | DSIM_LPDR_TIMEOUT(0xffff); @@ -717,6 +806,7 @@ static int exynos_dsi_init_link(struct exynos_dsi *dsi) static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) { struct videomode *vm = &dsi->vm; + unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; u32 reg;
if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { @@ -733,8 +823,9 @@ static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi) | DSIM_MAIN_HSA(vm->hsync_len); DSI_WRITE(dsi, DSIM_MSYNC_REG, reg); } + reg = DSIM_MAIN_HRESOL(vm->hactive, num_bits_resol) | + DSIM_MAIN_VRESOL(vm->vactive, num_bits_resol);
- reg = DSIM_MAIN_HRESOL(vm->hactive) | DSIM_MAIN_VRESOL(vm->vactive); DSI_WRITE(dsi, DSIM_MDRESOL_REG, reg);
dev_dbg(dsi->dev, "LCD size = %dx%d\n", vm->hactive, vm->vactive); @@ -1141,10 +1232,13 @@ static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)
static int exynos_dsi_init(struct exynos_dsi *dsi) { + struct exynos_dsi_driver_data *driver_data = dsi->driver_data; + exynos_dsi_reset(dsi); exynos_dsi_enable_irq(dsi); exynos_dsi_enable_clock(dsi); - exynos_dsi_wait_for_reset(dsi); + if (driver_data->wait_for_reset) + exynos_dsi_wait_for_reset(dsi); exynos_dsi_set_phy_ctrl(dsi); exynos_dsi_init_link(dsi);
-- 1.9.1