Convert the common bridge code and the two rockchip & stm drivers which currently use it to the regmap API in anticipation for further changes to make it more generic and add older DSI host controller support as found on i.mx6 based devices.

No functional changes other than requiring the platform drivers to provide a regmap via their plat_data. Going further each platform driver can also add its own regmap configuration like for maximum write offsets, r/w callbacks or different register layouts.

Suggested-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Adrian Ratiu adrian.ratiu@collabora.com --- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 189 +++++++++--------- .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 36 +++- drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 44 ++-- include/drm/bridge/dw_mipi_dsi.h | 2 +- 4 files changed, 155 insertions(+), 116 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index b6e793bb653c..4ef3e9038cc2 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include <linux/of_device.h> #include <linux/pm_runtime.h> +#include <linux/regmap.h> #include <linux/reset.h>

#include <video/mipi_display.h> @@ -226,7 +227,7 @@ struct dw_mipi_dsi { struct mipi_dsi_host dsi_host; struct drm_bridge *panel_bridge; struct device *dev; - void __iomem *base; + struct regmap *regs;

struct clk *pclk;

@@ -280,16 +281,6 @@ static inline struct dw_mipi_dsi *bridge_to_dsi(struct drm_bridge *bridge) return container_of(bridge, struct dw_mipi_dsi, bridge); }

-static inline void dsi_write(struct dw_mipi_dsi *dsi, u32 reg, u32 val) -{ - writel(val, dsi->base + reg); -} - -static inline u32 dsi_read(struct dw_mipi_dsi *dsi, u32 reg) -{ - return readl(dsi->base + reg); -} - static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host, struct mipi_dsi_device *device) { @@ -366,29 +357,29 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi, if (lpm) val |= CMD_MODE_ALL_LP;

- dsi_write(dsi, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS); - dsi_write(dsi, DSI_CMD_MODE_CFG, val); + regmap_write(dsi->regs, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS); + regmap_write(dsi->regs, DSI_CMD_MODE_CFG, val); }

static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val) { int ret; - u32 val, mask; + u32 val = 0, mask;

- ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, - val, !(val & GEN_CMD_FULL), 1000, - CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, + val, !(val & GEN_CMD_FULL), 1000, + CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to get available command FIFO\n"); return ret; }

- dsi_write(dsi, DSI_GEN_HDR, hdr_val); + regmap_write(dsi->regs, DSI_GEN_HDR, hdr_val);

mask = GEN_CMD_EMPTY | GEN_PLD_W_EMPTY; - ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, - val, (val & mask) == mask, - 1000, CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, + val, (val & mask) == mask, + 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to write command FIFO\n"); return ret; @@ -403,24 +394,26 @@ static int dw_mipi_dsi_write(struct dw_mipi_dsi *dsi, const u8 *tx_buf = packet->payload; int len = packet->payload_length, pld_data_bytes = sizeof(u32), ret; __le32 word; - u32 val; + u32 val = 0;

while (len) { if (len < pld_data_bytes) { word = 0; memcpy(&word, tx_buf, len); - dsi_write(dsi, DSI_GEN_PLD_DATA, le32_to_cpu(word)); + regmap_write(dsi->regs, DSI_GEN_PLD_DATA, + le32_to_cpu(word)); len = 0; } else { memcpy(&word, tx_buf, pld_data_bytes); - dsi_write(dsi, DSI_GEN_PLD_DATA, le32_to_cpu(word)); + regmap_write(dsi->regs, DSI_GEN_PLD_DATA, + le32_to_cpu(word)); tx_buf += pld_data_bytes; len -= pld_data_bytes; }

- ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, - val, !(val & GEN_PLD_W_FULL), 1000, - CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, + val, !(val & GEN_PLD_W_FULL), + 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to get available write payload FIFO\n"); @@ -438,12 +431,12 @@ static int dw_mipi_dsi_read(struct dw_mipi_dsi *dsi, { int i, j, ret, len = msg->rx_len; u8 *buf = msg->rx_buf; - u32 val; + u32 val = 0;

/* Wait end of the read operation */ - ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, - val, !(val & GEN_RD_CMD_BUSY), - 1000, CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, + val, !(val & GEN_RD_CMD_BUSY), + 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "Timeout during read operation\n"); return ret; @@ -451,15 +444,15 @@ static int dw_mipi_dsi_read(struct dw_mipi_dsi *dsi,

for (i = 0; i < len; i += 4) { /* Read fifo must not be empty before all bytes are read */ - ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, - val, !(val & GEN_PLD_R_EMPTY), - 1000, CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, + val, !(val & GEN_PLD_R_EMPTY), + 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "Read payload FIFO is empty\n"); return ret; }

- val = dsi_read(dsi, DSI_GEN_PLD_DATA); + regmap_read(dsi->regs, DSI_GEN_PLD_DATA, &val); for (j = 0; j < 4 && j + i < len; j++) buf[i + j] = val >> (8 * j); } @@ -536,29 +529,29 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi) } #endif /* CONFIG_DEBUG_FS */

- dsi_write(dsi, DSI_VID_MODE_CFG, val); + regmap_write(dsi->regs, DSI_VID_MODE_CFG, val); }

static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi, unsigned long mode_flags) { - dsi_write(dsi, DSI_PWR_UP, RESET); + regmap_write(dsi->regs, DSI_PWR_UP, RESET);

if (mode_flags & MIPI_DSI_MODE_VIDEO) { - dsi_write(dsi, DSI_MODE_CFG, ENABLE_VIDEO_MODE); + regmap_write(dsi->regs, DSI_MODE_CFG, ENABLE_VIDEO_MODE); dw_mipi_dsi_video_mode_config(dsi); - dsi_write(dsi, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS); + regmap_write(dsi->regs, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS); } else { - dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE); + regmap_write(dsi->regs, DSI_MODE_CFG, ENABLE_CMD_MODE); }

- dsi_write(dsi, DSI_PWR_UP, POWERUP); + regmap_write(dsi->regs, DSI_PWR_UP, POWERUP); }

static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi) { - dsi_write(dsi, DSI_PWR_UP, RESET); - dsi_write(dsi, DSI_PHY_RSTZ, PHY_RSTZ); + regmap_write(dsi->regs, DSI_PWR_UP, RESET); + regmap_write(dsi->regs, DSI_PHY_RSTZ, PHY_RSTZ); }

static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) @@ -573,14 +566,14 @@ static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) */ u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1;

- dsi_write(dsi, DSI_PWR_UP, RESET); + regmap_write(dsi->regs, DSI_PWR_UP, RESET);

/* * TODO dw drv improvements * timeout clock division should be computed with the * high speed transmission counter timeout and byte lane... */ - dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVISION(10) | + regmap_write(dsi->regs, DSI_CLKMGR_CFG, TO_CLK_DIVISION(10) | TX_ESC_CLK_DIVISION(esc_clk_division)); }

@@ -609,22 +602,22 @@ static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi, if (mode->flags & DRM_MODE_FLAG_NHSYNC) val |= HSYNC_ACTIVE_LOW;

- dsi_write(dsi, DSI_DPI_VCID, DPI_VCID(dsi->channel)); - dsi_write(dsi, DSI_DPI_COLOR_CODING, color); - dsi_write(dsi, DSI_DPI_CFG_POL, val); + regmap_write(dsi->regs, DSI_DPI_VCID, DPI_VCID(dsi->channel)); + regmap_write(dsi->regs, DSI_DPI_COLOR_CODING, color); + regmap_write(dsi->regs, DSI_DPI_CFG_POL, val); /* * TODO dw drv improvements * largest packet sizes during hfp or during vsa/vpb/vfp * should be computed according to byte lane, lane number and only * if sending lp cmds in high speed is enable (PHY_TXREQUESTCLKHS) */ - dsi_write(dsi, DSI_DPI_LP_CMD_TIM, OUTVACT_LPCMD_TIME(4) + regmap_write(dsi->regs, DSI_DPI_LP_CMD_TIM, OUTVACT_LPCMD_TIME(4) | INVACT_LPCMD_TIME(4)); }

static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi) { - dsi_write(dsi, DSI_PCKHDL_CFG, CRC_RX_EN | ECC_RX_EN | BTA_EN); + regmap_write(dsi->regs, DSI_PCKHDL_CFG, CRC_RX_EN | ECC_RX_EN | BTA_EN); }

static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi, @@ -638,7 +631,7 @@ static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi, * non-burst video modes, see dw_mipi_dsi_video_mode_config()... */

- dsi_write(dsi, DSI_VID_PKT_SIZE, + regmap_write(dsi->regs, DSI_VID_PKT_SIZE, dw_mipi_is_dual_mode(dsi) ? VID_PKT_SIZE(mode->hdisplay / 2) : VID_PKT_SIZE(mode->hdisplay)); @@ -651,14 +644,15 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi) * compute high speed transmission counter timeout according * to the timeout clock division (TO_CLK_DIVISION) and byte lane... */ - dsi_write(dsi, DSI_TO_CNT_CFG, HSTX_TO_CNT(1000) | LPRX_TO_CNT(1000)); + regmap_write(dsi->regs, DSI_TO_CNT_CFG, + HSTX_TO_CNT(1000) | LPRX_TO_CNT(1000)); /* * TODO dw drv improvements * the Bus-Turn-Around Timeout Counter should be computed * according to byte lane... */ - dsi_write(dsi, DSI_BTA_TO_CNT, 0xd00); - dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE); + regmap_write(dsi->regs, DSI_BTA_TO_CNT, 0xd00); + regmap_write(dsi->regs, DSI_MODE_CFG, ENABLE_CMD_MODE); }

/* Get lane byte clock cycles. */ @@ -692,13 +686,13 @@ static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi, * computations below may be improved... */ lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, htotal); - dsi_write(dsi, DSI_VID_HLINE_TIME, lbcc); + regmap_write(dsi->regs, DSI_VID_HLINE_TIME, lbcc);

lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hsa); - dsi_write(dsi, DSI_VID_HSA_TIME, lbcc); + regmap_write(dsi->regs, DSI_VID_HSA_TIME, lbcc);

lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hbp); - dsi_write(dsi, DSI_VID_HBP_TIME, lbcc); + regmap_write(dsi->regs, DSI_VID_HBP_TIME, lbcc); }

static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi, @@ -711,10 +705,10 @@ static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi, vfp = mode->vsync_start - mode->vdisplay; vbp = mode->vtotal - mode->vsync_end;

- dsi_write(dsi, DSI_VID_VACTIVE_LINES, vactive); - dsi_write(dsi, DSI_VID_VSA_LINES, vsa); - dsi_write(dsi, DSI_VID_VFP_LINES, vfp); - dsi_write(dsi, DSI_VID_VBP_LINES, vbp); + regmap_write(dsi->regs, DSI_VID_VACTIVE_LINES, vactive); + regmap_write(dsi->regs, DSI_VID_VSA_LINES, vsa); + regmap_write(dsi->regs, DSI_VID_VFP_LINES, vfp); + regmap_write(dsi->regs, DSI_VID_VBP_LINES, vbp); }

static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi) @@ -729,19 +723,24 @@ static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi) * DSI_CMD_MODE_CFG.MAX_RD_PKT_SIZE_LP (see CMD_MODE_ALL_LP) */

- hw_version = dsi_read(dsi, DSI_VERSION) & VERSION; + regmap_read(dsi->regs, DSI_VERSION, &hw_version); + hw_version &= VERSION;

if (hw_version >= HWVER_131) { - dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME_V131(0x40) | - PHY_LP2HS_TIME_V131(0x40)); - dsi_write(dsi, DSI_PHY_TMR_RD_CFG, MAX_RD_TIME_V131(10000)); + regmap_write(dsi->regs, DSI_PHY_TMR_CFG, + PHY_HS2LP_TIME_V131(0x40) | + PHY_LP2HS_TIME_V131(0x40)); + regmap_write(dsi->regs, DSI_PHY_TMR_RD_CFG, + MAX_RD_TIME_V131(10000)); } else { - dsi_write(dsi, DSI_PHY_TMR_CFG, PHY_HS2LP_TIME(0x40) | - PHY_LP2HS_TIME(0x40) | MAX_RD_TIME(10000)); + regmap_write(dsi->regs, DSI_PHY_TMR_CFG, + PHY_HS2LP_TIME(0x40) | + PHY_LP2HS_TIME(0x40) | + MAX_RD_TIME(10000)); }

- dsi_write(dsi, DSI_PHY_TMR_LPCLK_CFG, PHY_CLKHS2LP_TIME(0x40) - | PHY_CLKLP2HS_TIME(0x40)); + regmap_write(dsi->regs, DSI_PHY_TMR_LPCLK_CFG, + PHY_CLKHS2LP_TIME(0x40) | PHY_CLKLP2HS_TIME(0x40)); }

static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi) @@ -751,46 +750,49 @@ static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi) * stop wait time should be the maximum between host dsi * and panel stop wait times */ - dsi_write(dsi, DSI_PHY_IF_CFG, PHY_STOP_WAIT_TIME(0x20) | - N_LANES(dsi->lanes)); + regmap_write(dsi->regs, DSI_PHY_IF_CFG, + PHY_STOP_WAIT_TIME(0x20) | N_LANES(dsi->lanes)); }

static void dw_mipi_dsi_dphy_init(struct dw_mipi_dsi *dsi) { /* Clear PHY state */ - dsi_write(dsi, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK - | PHY_RSTZ | PHY_SHUTDOWNZ); - dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); - dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLR); - dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); + regmap_write(dsi->regs, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK + | PHY_RSTZ | PHY_SHUTDOWNZ); + regmap_write(dsi->regs, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); + regmap_write(dsi->regs, DSI_PHY_TST_CTRL0, PHY_TESTCLR); + regmap_write(dsi->regs, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); }

static void dw_mipi_dsi_dphy_enable(struct dw_mipi_dsi *dsi) { - u32 val; + u32 val = 0; int ret;

- dsi_write(dsi, DSI_PHY_RSTZ, PHY_ENFORCEPLL | PHY_ENABLECLK | - PHY_UNRSTZ | PHY_UNSHUTDOWNZ); + regmap_write(dsi->regs, DSI_PHY_RSTZ, PHY_ENFORCEPLL | PHY_ENABLECLK | + PHY_UNRSTZ | PHY_UNSHUTDOWNZ);

- ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS, val, - val & PHY_LOCK, 1000, PHY_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_PHY_STATUS, + val, val & PHY_LOCK, + 1000, PHY_STATUS_TIMEOUT_US); if (ret) DRM_DEBUG_DRIVER("failed to wait phy lock state\n");

- ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS, - val, val & PHY_STOP_STATE_CLK_LANE, 1000, - PHY_STATUS_TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_PHY_STATUS, + val, val & PHY_STOP_STATE_CLK_LANE, 1000, + PHY_STATUS_TIMEOUT_US); if (ret) DRM_DEBUG_DRIVER("failed to wait phy clk lane stop state\n"); }

static void dw_mipi_dsi_clear_err(struct dw_mipi_dsi *dsi) { - dsi_read(dsi, DSI_INT_ST0); - dsi_read(dsi, DSI_INT_ST1); - dsi_write(dsi, DSI_INT_MSK0, 0); - dsi_write(dsi, DSI_INT_MSK1, 0); + u32 val; + + regmap_read(dsi->regs, DSI_INT_ST0, &val); + regmap_read(dsi->regs, DSI_INT_ST1, &val); + regmap_write(dsi->regs, DSI_INT_MSK0, 0); + regmap_write(dsi->regs, DSI_INT_MSK1, 0); }

static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge) @@ -996,13 +998,10 @@ __dw_mipi_dsi_probe(struct platform_device *pdev, return ERR_PTR(-ENODEV); }

- if (!plat_data->base) { - dsi->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(dsi->base)) - return ERR_PTR(-ENODEV); - - } else { - dsi->base = plat_data->base; + dsi->regs = plat_data->regs; + if (!dsi->regs) { + DRM_ERROR("DSI regmap not supplied by platform driver\n"); + return ERR_PTR(-ENODEV); }

dsi->pclk = devm_clk_get(dev, "pclk"); diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index bc073ec5c183..3c33ed1fa805 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -24,6 +24,8 @@ #include "rockchip_drm_drv.h" #include "rockchip_drm_vop.h"

+#define DRIVER_NAME "dw-mipi-dsi-rockchip" + #define DSI_PHY_RSTZ 0xa0 #define PHY_DISFORCEPLL 0 #define PHY_ENFORCEPLL BIT(3) @@ -212,7 +214,7 @@ struct rockchip_dw_dsi_chip_data { struct dw_mipi_dsi_rockchip { struct device *dev; struct drm_encoder encoder; - void __iomem *base; + struct regmap *regs;

struct regmap *grf_regmap; struct clk *pllref_clk; @@ -297,12 +299,15 @@ static int max_mbps_to_parameter(unsigned int max_mbps)

static inline void dsi_write(struct dw_mipi_dsi_rockchip *dsi, u32 reg, u32 val) { - writel(val, dsi->base + reg); + regmap_write(dsi->regs, reg, val); }

static inline u32 dsi_read(struct dw_mipi_dsi_rockchip *dsi, u32 reg) { - return readl(dsi->base + reg); + u32 val; + + regmap_read(dsi->regs, reg, &val); + return val; }

static inline void dsi_set(struct dw_mipi_dsi_rockchip *dsi, u32 reg, u32 mask) @@ -884,6 +889,13 @@ static const struct dw_mipi_dsi_host_ops dw_mipi_dsi_rockchip_host_ops = { .detach = dw_mipi_dsi_rockchip_host_detach, };

+static const struct regmap_config rockchip_dsi_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .name = DRIVER_NAME, +}; + static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -892,6 +904,7 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev) struct resource *res; const struct rockchip_dw_dsi_chip_data *cdata = of_device_get_match_data(dev); + void __iomem *regs; int ret, i;

dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL); @@ -899,10 +912,17 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev) return -ENOMEM;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - dsi->base = devm_ioremap_resource(dev, res); - if (IS_ERR(dsi->base)) { + regs = devm_ioremap_resource(dev, res); + if (IS_ERR(regs)) { DRM_DEV_ERROR(dev, "Unable to get dsi registers\n"); - return PTR_ERR(dsi->base); + return PTR_ERR(regs); + } + + dsi->regs = devm_regmap_init_mmio(dev, regs, + &rockchip_dsi_regmap_config); + if (IS_ERR(dsi->regs)) { + DRM_DEV_ERROR(dev, "Unable to create DSI regmap\n"); + return PTR_ERR(dsi->regs); }

i = 0; @@ -954,7 +974,7 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev) }

dsi->dev = dev; - dsi->pdata.base = dsi->base; + dsi->pdata.regs = dsi->regs; dsi->pdata.max_data_lanes = dsi->cdata->max_data_lanes; dsi->pdata.phy_ops = &dw_mipi_dsi_rockchip_phy_ops; dsi->pdata.host_ops = &dw_mipi_dsi_rockchip_host_ops; @@ -1072,6 +1092,6 @@ struct platform_driver dw_mipi_dsi_rockchip_driver = { .remove = dw_mipi_dsi_rockchip_remove, .driver = { .of_match_table = dw_mipi_dsi_rockchip_dt_ids, - .name = "dw-mipi-dsi-rockchip", + .name = DRIVER_NAME, }, }; diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index 514efefb0016..cc233271347b 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/regulator/consumer.h> +#include <linux/regmap.h>

#include <video/mipi_display.h>

@@ -19,6 +20,8 @@ #include <drm/drm_mipi_dsi.h> #include <drm/drm_print.h>

+#define DRIVER_NAME "stm32-display-dsi" + #define HWVER_130 0x31333000 /* IP version 1.30 */ #define HWVER_131 0x31333100 /* IP version 1.31 */

@@ -75,7 +78,7 @@ enum dsi_color { #define TIMEOUT_US 200000

struct dw_mipi_dsi_stm { - void __iomem *base; + struct regmap *regs; struct clk *pllref_clk; struct dw_mipi_dsi *dsi; u32 hw_version; @@ -86,12 +89,15 @@ struct dw_mipi_dsi_stm {

static inline void dsi_write(struct dw_mipi_dsi_stm *dsi, u32 reg, u32 val) { - writel(val, dsi->base + reg); + regmap_write(dsi->regs, reg, val); }

static inline u32 dsi_read(struct dw_mipi_dsi_stm *dsi, u32 reg) { - return readl(dsi->base + reg); + u32 val; + + regmap_read(dsi->regs, reg, &val); + return val; }

static inline void dsi_set(struct dw_mipi_dsi_stm *dsi, u32 reg, u32 mask) @@ -202,15 +208,15 @@ static int dw_mipi_dsi_phy_init(void *priv_data)

/* Enable the regulator */ dsi_set(dsi, DSI_WRPCR, WRPCR_REGEN | WRPCR_BGREN); - ret = readl_poll_timeout(dsi->base + DSI_WISR, val, val & WISR_RRS, - SLEEP_US, TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_WISR, val, val & WISR_RRS, + SLEEP_US, TIMEOUT_US); if (ret) DRM_DEBUG_DRIVER("!TIMEOUT! waiting REGU, let's continue\n");

/* Enable the DSI PLL & wait for its lock */ dsi_set(dsi, DSI_WRPCR, WRPCR_PLLEN); - ret = readl_poll_timeout(dsi->base + DSI_WISR, val, val & WISR_PLLLS, - SLEEP_US, TIMEOUT_US); + ret = regmap_read_poll_timeout(dsi->regs, DSI_WISR, val, + val & WISR_PLLLS, SLEEP_US, TIMEOUT_US); if (ret) DRM_DEBUG_DRIVER("!TIMEOUT! waiting PLL, let's continue\n");

@@ -327,12 +333,20 @@ static const struct of_device_id dw_mipi_dsi_stm_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, dw_mipi_dsi_stm_dt_ids);

+static const struct regmap_config stm_dsi_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .name = DRIVER_NAME, +}; + static int dw_mipi_dsi_stm_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct dw_mipi_dsi_stm *dsi; struct clk *pclk; struct resource *res; + void __iomem *regs; int ret;

dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL); @@ -340,13 +354,19 @@ static int dw_mipi_dsi_stm_probe(struct platform_device *pdev) return -ENOMEM;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - dsi->base = devm_ioremap_resource(dev, res); - if (IS_ERR(dsi->base)) { - ret = PTR_ERR(dsi->base); + regs = devm_ioremap_resource(dev, res); + if (IS_ERR(regs)) { + ret = PTR_ERR(regs); DRM_ERROR("Unable to get dsi registers %d\n", ret); return ret; }

+ dsi->regs = devm_regmap_init_mmio(dev, regs, &stm_dsi_regmap_config); + if (IS_ERR(dsi->regs)) { + DRM_DEV_ERROR(dev, "Unable to create DSI regmap\n"); + return PTR_ERR(dsi->regs); + } + dsi->vdd_supply = devm_regulator_get(dev, "phy-dsi"); if (IS_ERR(dsi->vdd_supply)) { ret = PTR_ERR(dsi->vdd_supply); @@ -396,7 +416,7 @@ static int dw_mipi_dsi_stm_probe(struct platform_device *pdev) goto err_dsi_probe; }

- dw_mipi_dsi_stm_plat_data.base = dsi->base; + dw_mipi_dsi_stm_plat_data.regs = dsi->regs; dw_mipi_dsi_stm_plat_data.priv_data = dsi;

platform_set_drvdata(pdev, dsi); @@ -474,7 +494,7 @@ static struct platform_driver dw_mipi_dsi_stm_driver = { .remove = dw_mipi_dsi_stm_remove, .driver = { .of_match_table = dw_mipi_dsi_stm_dt_ids, - .name = "stm32-display-dsi", + .name = DRIVER_NAME, .pm = &dw_mipi_dsi_stm_pm_ops, }, }; diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h index 94cc64a342e1..ecc1897efa62 100644 --- a/include/drm/bridge/dw_mipi_dsi.h +++ b/include/drm/bridge/dw_mipi_dsi.h @@ -37,7 +37,7 @@ struct dw_mipi_dsi_host_ops { };

struct dw_mipi_dsi_plat_data { - void __iomem *base; + struct regmap *regs; unsigned int max_data_lanes;

enum drm_mode_status (*mode_valid)(void *priv_data,

Register existence, address/offsets, field layouts, reserved bits and so on differ between MIPI-DSI versions and between SoC vendor boards. Despite these differences the hw IP and protocols are mostly the same so the generic driver can be made to compensate these differences.

The existing Rockchip and STM drivers hardcoded a lot of their common definitions in the bridge code because they're based on DSI v1.30 and 1.31 which are relatively close, but in order to support older/future versions with more diverging layouts like the v1.01 present on imx6, we abstract some of the register accesses via the regmap_field APIs.

This enables each platform driver to supply its own specific register layout making the common bridge driver more generic as well as removing a lot of the bit-shifting and masking boilerplate which is now handled automatically by the regmap subsystem.

Not all register accesses have been converted: only the minimum difference between the versions supplied by the current 3 rockchip, stm and imx host controller cores, moore can be moved in the future as needed.

Suggested-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Adrian Ratiu adrian.ratiu@collabora.com --- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 470 +++++++++--------- .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 118 +++++ drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 116 +++++ include/drm/bridge/dw_mipi_dsi.h | 58 +++ 4 files changed, 529 insertions(+), 233 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 4ef3e9038cc2..f88690d04494 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -43,11 +43,8 @@ #define TO_CLK_DIVISION(div) (((div) & 0xff) << 8) #define TX_ESC_CLK_DIVISION(div) ((div) & 0xff)

-#define DSI_DPI_VCID 0x0c #define DPI_VCID(vcid) ((vcid) & 0x3)

-#define DSI_DPI_COLOR_CODING 0x10 -#define LOOSELY18_EN BIT(8) #define DPI_COLOR_CODING_16BIT_1 0x0 #define DPI_COLOR_CODING_16BIT_2 0x1 #define DPI_COLOR_CODING_16BIT_3 0x2 @@ -55,13 +52,6 @@ #define DPI_COLOR_CODING_18BIT_2 0x4 #define DPI_COLOR_CODING_24BIT 0x5

-#define DSI_DPI_CFG_POL 0x14 -#define COLORM_ACTIVE_LOW BIT(4) -#define SHUTD_ACTIVE_LOW BIT(3) -#define HSYNC_ACTIVE_LOW BIT(2) -#define VSYNC_ACTIVE_LOW BIT(1) -#define DATAEN_ACTIVE_LOW BIT(0) - #define DSI_DPI_LP_CMD_TIM 0x18 #define OUTVACT_LPCMD_TIME(p) (((p) & 0xff) << 16) #define INVACT_LPCMD_TIME(p) ((p) & 0xff) @@ -71,7 +61,6 @@ #define DSI_DBI_PARTITIONING_EN 0x24 #define DSI_DBI_CMDSIZE 0x28

-#define DSI_PCKHDL_CFG 0x2c #define CRC_RX_EN BIT(4) #define ECC_RX_EN BIT(3) #define BTA_EN BIT(2) @@ -81,70 +70,13 @@ #define DSI_GEN_VCID 0x30

#define DSI_MODE_CFG 0x34 -#define ENABLE_VIDEO_MODE 0 -#define ENABLE_CMD_MODE BIT(0)

-#define DSI_VID_MODE_CFG 0x38 -#define ENABLE_LOW_POWER (0x3f << 8) -#define ENABLE_LOW_POWER_MASK (0x3f << 8) +#define ENABLE_LOW_POWER 0x3f + #define VID_MODE_TYPE_NON_BURST_SYNC_PULSES 0x0 #define VID_MODE_TYPE_NON_BURST_SYNC_EVENTS 0x1 #define VID_MODE_TYPE_BURST 0x2 -#define VID_MODE_TYPE_MASK 0x3 -#define VID_MODE_VPG_ENABLE BIT(16) -#define VID_MODE_VPG_HORIZONTAL BIT(24) - -#define DSI_VID_PKT_SIZE 0x3c -#define VID_PKT_SIZE(p) ((p) & 0x3fff) - -#define DSI_VID_NUM_CHUNKS 0x40 -#define VID_NUM_CHUNKS(c) ((c) & 0x1fff) - -#define DSI_VID_NULL_SIZE 0x44 -#define VID_NULL_SIZE(b) ((b) & 0x1fff) - -#define DSI_VID_HSA_TIME 0x48 -#define DSI_VID_HBP_TIME 0x4c -#define DSI_VID_HLINE_TIME 0x50 -#define DSI_VID_VSA_LINES 0x54 -#define DSI_VID_VBP_LINES 0x58 -#define DSI_VID_VFP_LINES 0x5c -#define DSI_VID_VACTIVE_LINES 0x60 -#define DSI_EDPI_CMD_SIZE 0x64 - -#define DSI_CMD_MODE_CFG 0x68 -#define MAX_RD_PKT_SIZE_LP BIT(24) -#define DCS_LW_TX_LP BIT(19) -#define DCS_SR_0P_TX_LP BIT(18) -#define DCS_SW_1P_TX_LP BIT(17) -#define DCS_SW_0P_TX_LP BIT(16) -#define GEN_LW_TX_LP BIT(14) -#define GEN_SR_2P_TX_LP BIT(13) -#define GEN_SR_1P_TX_LP BIT(12) -#define GEN_SR_0P_TX_LP BIT(11) -#define GEN_SW_2P_TX_LP BIT(10) -#define GEN_SW_1P_TX_LP BIT(9) -#define GEN_SW_0P_TX_LP BIT(8) -#define ACK_RQST_EN BIT(1) -#define TEAR_FX_EN BIT(0) - -#define CMD_MODE_ALL_LP (MAX_RD_PKT_SIZE_LP | \ - DCS_LW_TX_LP | \ - DCS_SR_0P_TX_LP | \ - DCS_SW_1P_TX_LP | \ - DCS_SW_0P_TX_LP | \ - GEN_LW_TX_LP | \ - GEN_SR_2P_TX_LP | \ - GEN_SR_1P_TX_LP | \ - GEN_SR_0P_TX_LP | \ - GEN_SW_2P_TX_LP | \ - GEN_SW_1P_TX_LP | \ - GEN_SW_0P_TX_LP) - -#define DSI_GEN_HDR 0x6c -#define DSI_GEN_PLD_DATA 0x70 - -#define DSI_CMD_PKT_STATUS 0x74 + #define GEN_RD_CMD_BUSY BIT(6) #define GEN_PLD_R_FULL BIT(5) #define GEN_PLD_R_EMPTY BIT(4) @@ -153,72 +85,15 @@ #define GEN_CMD_FULL BIT(1) #define GEN_CMD_EMPTY BIT(0)

-#define DSI_TO_CNT_CFG 0x78 -#define HSTX_TO_CNT(p) (((p) & 0xffff) << 16) -#define LPRX_TO_CNT(p) ((p) & 0xffff) - #define DSI_HS_RD_TO_CNT 0x7c #define DSI_LP_RD_TO_CNT 0x80 #define DSI_HS_WR_TO_CNT 0x84 #define DSI_LP_WR_TO_CNT 0x88 -#define DSI_BTA_TO_CNT 0x8c

-#define DSI_LPCLK_CTRL 0x94 #define AUTO_CLKLANE_CTRL BIT(1) -#define PHY_TXREQUESTCLKHS BIT(0) - -#define DSI_PHY_TMR_LPCLK_CFG 0x98 -#define PHY_CLKHS2LP_TIME(lbcc) (((lbcc) & 0x3ff) << 16) -#define PHY_CLKLP2HS_TIME(lbcc) ((lbcc) & 0x3ff) - -#define DSI_PHY_TMR_CFG 0x9c -#define PHY_HS2LP_TIME(lbcc) (((lbcc) & 0xff) << 24) -#define PHY_LP2HS_TIME(lbcc) (((lbcc) & 0xff) << 16) -#define MAX_RD_TIME(lbcc) ((lbcc) & 0x7fff) -#define PHY_HS2LP_TIME_V131(lbcc) (((lbcc) & 0x3ff) << 16) -#define PHY_LP2HS_TIME_V131(lbcc) ((lbcc) & 0x3ff) - -#define DSI_PHY_RSTZ 0xa0 -#define PHY_DISFORCEPLL 0 -#define PHY_ENFORCEPLL BIT(3) -#define PHY_DISABLECLK 0 -#define PHY_ENABLECLK BIT(2) -#define PHY_RSTZ 0 -#define PHY_UNRSTZ BIT(1) -#define PHY_SHUTDOWNZ 0 -#define PHY_UNSHUTDOWNZ BIT(0) - -#define DSI_PHY_IF_CFG 0xa4 -#define PHY_STOP_WAIT_TIME(cycle) (((cycle) & 0xff) << 8) -#define N_LANES(n) (((n) - 1) & 0x3) - -#define DSI_PHY_ULPS_CTRL 0xa8 -#define DSI_PHY_TX_TRIGGERS 0xac - -#define DSI_PHY_STATUS 0xb0 #define PHY_STOP_STATE_CLK_LANE BIT(2) #define PHY_LOCK BIT(0)

-#define DSI_PHY_TST_CTRL0 0xb4 -#define PHY_TESTCLK BIT(1) -#define PHY_UNTESTCLK 0 -#define PHY_TESTCLR BIT(0) -#define PHY_UNTESTCLR 0 - -#define DSI_PHY_TST_CTRL1 0xb8 -#define PHY_TESTEN BIT(16) -#define PHY_UNTESTEN 0 -#define PHY_TESTDOUT(n) (((n) & 0xff) << 8) -#define PHY_TESTDIN(n) ((n) & 0xff) - -#define DSI_INT_ST0 0xbc -#define DSI_INT_ST1 0xc0 -#define DSI_INT_MSK0 0xc4 -#define DSI_INT_MSK1 0xc8 - -#define DSI_PHY_TMR_RD_CFG 0xf4 -#define MAX_RD_TIME_V131(lbcc) ((lbcc) & 0x7fff) - #define PHY_STATUS_TIMEOUT_US 10000 #define CMD_PKT_STATUS_TIMEOUT_US 20000

@@ -236,6 +111,7 @@ struct dw_mipi_dsi { u32 lanes; u32 format; unsigned long mode_flags; + u32 hw_version;

#ifdef CONFIG_DEBUG_FS struct dentry *debugfs; @@ -248,6 +124,53 @@ struct dw_mipi_dsi { struct dw_mipi_dsi *slave; /* dual-dsi slave ptr */

const struct dw_mipi_dsi_plat_data *plat_data; + + struct regmap_field *field_dpi_18loosely_en; + struct regmap_field *field_dpi_color_coding; + struct regmap_field *field_dpi_vid; + struct regmap_field *field_dpi_vsync_active_low; + struct regmap_field *field_dpi_hsync_active_low; + struct regmap_field *field_cmd_mode_ack_rqst_en; + struct regmap_field *field_cmd_mode_all_lp_en; + struct regmap_field *field_cmd_mode_en; + struct regmap_field *field_cmd_pkt_status; + struct regmap_field *field_vid_mode_en; + struct regmap_field *field_vid_mode_type; + struct regmap_field *field_vid_mode_low_power; + struct regmap_field *field_vid_mode_vpg_en; + struct regmap_field *field_vid_mode_vpg_horiz; + struct regmap_field *field_vid_pkt_size; + struct regmap_field *field_vid_hsa_time; + struct regmap_field *field_vid_hbp_time; + struct regmap_field *field_vid_hline_time; + struct regmap_field *field_vid_vsa_time; + struct regmap_field *field_vid_vbp_time; + struct regmap_field *field_vid_vfp_time; + struct regmap_field *field_vid_vactive_time; + struct regmap_field *field_phy_txrequestclkhs; + struct regmap_field *field_phy_bta_time; + struct regmap_field *field_phy_max_rd_time; + struct regmap_field *field_phy_lp2hs_time; + struct regmap_field *field_phy_hs2lp_time; + struct regmap_field *field_phy_clklp2hs_time; + struct regmap_field *field_phy_clkhs2lp_time; + struct regmap_field *field_phy_testclr; + struct regmap_field *field_phy_unshutdownz; + struct regmap_field *field_phy_unrstz; + struct regmap_field *field_phy_enableclk; + struct regmap_field *field_phy_forcepll; + struct regmap_field *field_phy_nlanes; + struct regmap_field *field_phy_stop_wait_time; + struct regmap_field *field_phy_status; + struct regmap_field *field_pckhdl_cfg; + struct regmap_field *field_hstx_timeout_counter; + struct regmap_field *field_lprx_timeout_counter; + struct regmap_field *field_int_stat0; + struct regmap_field *field_int_stat1; + struct regmap_field *field_int_mask0; + struct regmap_field *field_int_mask1; + struct regmap_field *field_gen_hdr; + struct regmap_field *field_gen_payload; };

/* @@ -349,16 +272,17 @@ static int dw_mipi_dsi_host_detach(struct mipi_dsi_host *host, static void dw_mipi_message_config(struct dw_mipi_dsi *dsi, const struct mipi_dsi_msg *msg) { + const struct dw_mipi_dsi_variant *variant = dsi->plat_data->variant; bool lpm = msg->flags & MIPI_DSI_MSG_USE_LPM; - u32 val = 0;

if (msg->flags & MIPI_DSI_MSG_REQ_ACK) - val |= ACK_RQST_EN; + regmap_field_write(dsi->field_cmd_mode_ack_rqst_en, 1); + if (lpm) - val |= CMD_MODE_ALL_LP; + regmap_field_write(dsi->field_cmd_mode_all_lp_en, + variant->val_cmd_mode_all_lp);

- regmap_write(dsi->regs, DSI_LPCLK_CTRL, lpm ? 0 : PHY_TXREQUESTCLKHS); - regmap_write(dsi->regs, DSI_CMD_MODE_CFG, val); + regmap_field_write(dsi->field_phy_txrequestclkhs, lpm ? 0 : 1); }

static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val) @@ -366,18 +290,18 @@ static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val) int ret; u32 val = 0, mask;

- ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, - val, !(val & GEN_CMD_FULL), 1000, - CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_field_read_poll_timeout(dsi->field_cmd_pkt_status, + val, !(val & GEN_CMD_FULL), + 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to get available command FIFO\n"); return ret; }

- regmap_write(dsi->regs, DSI_GEN_HDR, hdr_val); + regmap_field_write(dsi->field_gen_hdr, hdr_val);

mask = GEN_CMD_EMPTY | GEN_PLD_W_EMPTY; - ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, + ret = regmap_field_read_poll_timeout(dsi->field_cmd_pkt_status, val, (val & mask) == mask, 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { @@ -400,20 +324,22 @@ static int dw_mipi_dsi_write(struct dw_mipi_dsi *dsi, if (len < pld_data_bytes) { word = 0; memcpy(&word, tx_buf, len); - regmap_write(dsi->regs, DSI_GEN_PLD_DATA, - le32_to_cpu(word)); + regmap_field_write(dsi->field_gen_payload, + le32_to_cpu(word)); len = 0; } else { memcpy(&word, tx_buf, pld_data_bytes); - regmap_write(dsi->regs, DSI_GEN_PLD_DATA, - le32_to_cpu(word)); + regmap_field_write(dsi->field_gen_payload, + le32_to_cpu(word)); tx_buf += pld_data_bytes; len -= pld_data_bytes; }

- ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, - val, !(val & GEN_PLD_W_FULL), - 1000, CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_field_read_poll_timeout(dsi->field_cmd_pkt_status, + val, + !(val & GEN_PLD_W_FULL), + 1000, + CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to get available write payload FIFO\n"); @@ -434,9 +360,9 @@ static int dw_mipi_dsi_read(struct dw_mipi_dsi *dsi, u32 val = 0;

/* Wait end of the read operation */ - ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, - val, !(val & GEN_RD_CMD_BUSY), - 1000, CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_field_read_poll_timeout(dsi->field_cmd_pkt_status, + val, !(val & GEN_RD_CMD_BUSY), + 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "Timeout during read operation\n"); return ret; @@ -444,15 +370,17 @@ static int dw_mipi_dsi_read(struct dw_mipi_dsi *dsi,

for (i = 0; i < len; i += 4) { /* Read fifo must not be empty before all bytes are read */ - ret = regmap_read_poll_timeout(dsi->regs, DSI_CMD_PKT_STATUS, - val, !(val & GEN_PLD_R_EMPTY), - 1000, CMD_PKT_STATUS_TIMEOUT_US); + ret = regmap_field_read_poll_timeout(dsi->field_cmd_pkt_status, + val, + !(val & GEN_PLD_R_EMPTY), + 1000, + CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "Read payload FIFO is empty\n"); return ret; }

- regmap_read(dsi->regs, DSI_GEN_PLD_DATA, &val); + regmap_field_read(dsi->field_gen_payload, &val); for (j = 0; j < 4 && j + i < len; j++) buf[i + j] = val >> (8 * j); } @@ -506,30 +434,30 @@ static const struct mipi_dsi_host_ops dw_mipi_dsi_host_ops = {

static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi) { - u32 val; - /* * TODO dw drv improvements * enabling low power is panel-dependent, we should use the * panel configuration here... */ - val = ENABLE_LOW_POWER; + regmap_field_write(dsi->field_vid_mode_low_power, ENABLE_LOW_POWER);

if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) - val |= VID_MODE_TYPE_BURST; + regmap_field_write(dsi->field_vid_mode_type, + VID_MODE_TYPE_BURST); else if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) - val |= VID_MODE_TYPE_NON_BURST_SYNC_PULSES; + regmap_field_write(dsi->field_vid_mode_type, + VID_MODE_TYPE_NON_BURST_SYNC_PULSES); else - val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS; + regmap_field_write(dsi->field_vid_mode_type, + VID_MODE_TYPE_NON_BURST_SYNC_EVENTS);

#ifdef CONFIG_DEBUG_FS if (dsi->vpg) { - val |= VID_MODE_VPG_ENABLE; - val |= dsi->vpg_horizontal ? VID_MODE_VPG_HORIZONTAL : 0; + regmap_field_write(dsi->regs, dsi->field_vid_mode_vpg_en, 1); + regmap_field_write(dsi->regs, dsi->field_vid_mode_vpg_horiz, + dsi->vpg_horizontal ? 1 : 0); } #endif /* CONFIG_DEBUG_FS */ - - regmap_write(dsi->regs, DSI_VID_MODE_CFG, val); }

static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi, @@ -538,11 +466,13 @@ static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi, regmap_write(dsi->regs, DSI_PWR_UP, RESET);

if (mode_flags & MIPI_DSI_MODE_VIDEO) { - regmap_write(dsi->regs, DSI_MODE_CFG, ENABLE_VIDEO_MODE); + regmap_field_write(dsi->field_cmd_mode_en, 0); + dw_mipi_dsi_video_mode_config(dsi); - regmap_write(dsi->regs, DSI_LPCLK_CTRL, PHY_TXREQUESTCLKHS); + + regmap_field_write(dsi->field_phy_txrequestclkhs, 1); } else { - regmap_write(dsi->regs, DSI_MODE_CFG, ENABLE_CMD_MODE); + regmap_field_write(dsi->field_cmd_mode_en, 1); }

regmap_write(dsi->regs, DSI_PWR_UP, POWERUP); @@ -551,7 +481,7 @@ static void dw_mipi_dsi_set_mode(struct dw_mipi_dsi *dsi, static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi) { regmap_write(dsi->regs, DSI_PWR_UP, RESET); - regmap_write(dsi->regs, DSI_PHY_RSTZ, PHY_RSTZ); + regmap_field_write(dsi->field_phy_unrstz, 0); }

static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) @@ -580,14 +510,15 @@ static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi, const struct drm_display_mode *mode) { - u32 val = 0, color = 0; + u32 color = 0;

switch (dsi->format) { case MIPI_DSI_FMT_RGB888: color = DPI_COLOR_CODING_24BIT; break; case MIPI_DSI_FMT_RGB666: - color = DPI_COLOR_CODING_18BIT_2 | LOOSELY18_EN; + color = DPI_COLOR_CODING_18BIT_2; + regmap_field_write(dsi->field_dpi_18loosely_en, 1); break; case MIPI_DSI_FMT_RGB666_PACKED: color = DPI_COLOR_CODING_18BIT_1; @@ -597,14 +528,15 @@ static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi, break; }

- if (mode->flags & DRM_MODE_FLAG_NVSYNC) - val |= VSYNC_ACTIVE_LOW; - if (mode->flags & DRM_MODE_FLAG_NHSYNC) - val |= HSYNC_ACTIVE_LOW; + regmap_field_write(dsi->field_dpi_color_coding, color); + + if (!(mode->flags & DRM_MODE_FLAG_NVSYNC)) + regmap_field_write(dsi->field_dpi_vsync_active_low, 1); + if (!(mode->flags & DRM_MODE_FLAG_NHSYNC)) + regmap_field_write(dsi->field_dpi_hsync_active_low, 1); + + regmap_field_write(dsi->field_dpi_vid, DPI_VCID(dsi->channel));

- regmap_write(dsi->regs, DSI_DPI_VCID, DPI_VCID(dsi->channel)); - regmap_write(dsi->regs, DSI_DPI_COLOR_CODING, color); - regmap_write(dsi->regs, DSI_DPI_CFG_POL, val); /* * TODO dw drv improvements * largest packet sizes during hfp or during vsa/vpb/vfp @@ -617,7 +549,8 @@ static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,

static void dw_mipi_dsi_packet_handler_config(struct dw_mipi_dsi *dsi) { - regmap_write(dsi->regs, DSI_PCKHDL_CFG, CRC_RX_EN | ECC_RX_EN | BTA_EN); + regmap_field_write(dsi->field_pckhdl_cfg, + CRC_RX_EN | ECC_RX_EN | BTA_EN); }

static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi, @@ -630,11 +563,9 @@ static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi, * DSI_VNPCR.NPSIZE... especially because this driver supports * non-burst video modes, see dw_mipi_dsi_video_mode_config()... */ - - regmap_write(dsi->regs, DSI_VID_PKT_SIZE, - dw_mipi_is_dual_mode(dsi) ? - VID_PKT_SIZE(mode->hdisplay / 2) : - VID_PKT_SIZE(mode->hdisplay)); + regmap_field_write(dsi->field_vid_pkt_size, + dw_mipi_is_dual_mode(dsi) ? + mode->hdisplay / 2 : mode->hdisplay); }

static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi) @@ -644,15 +575,17 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi) * compute high speed transmission counter timeout according * to the timeout clock division (TO_CLK_DIVISION) and byte lane... */ - regmap_write(dsi->regs, DSI_TO_CNT_CFG, - HSTX_TO_CNT(1000) | LPRX_TO_CNT(1000)); + regmap_field_write(dsi->field_hstx_timeout_counter, 1000); + regmap_field_write(dsi->field_lprx_timeout_counter, 1000); + /* * TODO dw drv improvements * the Bus-Turn-Around Timeout Counter should be computed * according to byte lane... */ - regmap_write(dsi->regs, DSI_BTA_TO_CNT, 0xd00); - regmap_write(dsi->regs, DSI_MODE_CFG, ENABLE_CMD_MODE); + regmap_field_write(dsi->field_phy_bta_time, 0xd00); + + regmap_field_write(dsi->field_cmd_mode_en, 1); }

/* Get lane byte clock cycles. */ @@ -686,13 +619,13 @@ static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi, * computations below may be improved... */ lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, htotal); - regmap_write(dsi->regs, DSI_VID_HLINE_TIME, lbcc); + regmap_field_write(dsi->field_vid_hline_time, lbcc);

lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hsa); - regmap_write(dsi->regs, DSI_VID_HSA_TIME, lbcc); + regmap_field_write(dsi->field_vid_hsa_time, lbcc);

lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hbp); - regmap_write(dsi->regs, DSI_VID_HBP_TIME, lbcc); + regmap_field_write(dsi->field_vid_hbp_time, lbcc); }

static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi, @@ -705,16 +638,14 @@ static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi, vfp = mode->vsync_start - mode->vdisplay; vbp = mode->vtotal - mode->vsync_end;

- regmap_write(dsi->regs, DSI_VID_VACTIVE_LINES, vactive); - regmap_write(dsi->regs, DSI_VID_VSA_LINES, vsa); - regmap_write(dsi->regs, DSI_VID_VFP_LINES, vfp); - regmap_write(dsi->regs, DSI_VID_VBP_LINES, vbp); + regmap_field_write(dsi->field_vid_vactive_time, vactive); + regmap_field_write(dsi->field_vid_vsa_time, vsa); + regmap_field_write(dsi->field_vid_vfp_time, vfp); + regmap_field_write(dsi->field_vid_vbp_time, vbp); }

static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi) { - u32 hw_version; - /* * TODO dw drv improvements * data & clock lane timers should be computed according to panel @@ -722,25 +653,12 @@ static void dw_mipi_dsi_dphy_timing_config(struct dw_mipi_dsi *dsi) * note: DSI_PHY_TMR_CFG.MAX_RD_TIME should be in line with * DSI_CMD_MODE_CFG.MAX_RD_PKT_SIZE_LP (see CMD_MODE_ALL_LP) */ + regmap_field_write(dsi->field_phy_lp2hs_time, 0x40); + regmap_field_write(dsi->field_phy_hs2lp_time, 0x40);

- regmap_read(dsi->regs, DSI_VERSION, &hw_version); - hw_version &= VERSION; - - if (hw_version >= HWVER_131) { - regmap_write(dsi->regs, DSI_PHY_TMR_CFG, - PHY_HS2LP_TIME_V131(0x40) | - PHY_LP2HS_TIME_V131(0x40)); - regmap_write(dsi->regs, DSI_PHY_TMR_RD_CFG, - MAX_RD_TIME_V131(10000)); - } else { - regmap_write(dsi->regs, DSI_PHY_TMR_CFG, - PHY_HS2LP_TIME(0x40) | - PHY_LP2HS_TIME(0x40) | - MAX_RD_TIME(10000)); - } - - regmap_write(dsi->regs, DSI_PHY_TMR_LPCLK_CFG, - PHY_CLKHS2LP_TIME(0x40) | PHY_CLKLP2HS_TIME(0x40)); + regmap_field_write(dsi->field_phy_max_rd_time, 10000); + regmap_field_write(dsi->field_phy_clklp2hs_time, 0x40); + regmap_field_write(dsi->field_phy_clkhs2lp_time, 0x40); }

static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi) @@ -750,18 +668,22 @@ static void dw_mipi_dsi_dphy_interface_config(struct dw_mipi_dsi *dsi) * stop wait time should be the maximum between host dsi * and panel stop wait times */ - regmap_write(dsi->regs, DSI_PHY_IF_CFG, - PHY_STOP_WAIT_TIME(0x20) | N_LANES(dsi->lanes)); + regmap_field_write(dsi->field_phy_stop_wait_time, 0x20); + regmap_field_write(dsi->field_phy_nlanes, dsi->lanes - 1); }

static void dw_mipi_dsi_dphy_init(struct dw_mipi_dsi *dsi) { /* Clear PHY state */ - regmap_write(dsi->regs, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK - | PHY_RSTZ | PHY_SHUTDOWNZ); - regmap_write(dsi->regs, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); - regmap_write(dsi->regs, DSI_PHY_TST_CTRL0, PHY_TESTCLR); - regmap_write(dsi->regs, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); + regmap_field_write(dsi->field_phy_enableclk, 0); + regmap_field_write(dsi->field_phy_unrstz, 0); + regmap_field_write(dsi->field_phy_unshutdownz, 0); + + regmap_field_write(dsi->field_phy_forcepll, 0); + + regmap_field_write(dsi->field_phy_testclr, 0); + regmap_field_write(dsi->field_phy_testclr, 1); + regmap_field_write(dsi->field_phy_testclr, 0); }

static void dw_mipi_dsi_dphy_enable(struct dw_mipi_dsi *dsi) @@ -769,18 +691,21 @@ static void dw_mipi_dsi_dphy_enable(struct dw_mipi_dsi *dsi) u32 val = 0; int ret;

- regmap_write(dsi->regs, DSI_PHY_RSTZ, PHY_ENFORCEPLL | PHY_ENABLECLK | - PHY_UNRSTZ | PHY_UNSHUTDOWNZ); + regmap_field_write(dsi->field_phy_enableclk, 1); + regmap_field_write(dsi->field_phy_unrstz, 1); + regmap_field_write(dsi->field_phy_unshutdownz, 1); + + regmap_field_write(dsi->field_phy_forcepll, 1);

- ret = regmap_read_poll_timeout(dsi->regs, DSI_PHY_STATUS, - val, val & PHY_LOCK, - 1000, PHY_STATUS_TIMEOUT_US); + ret = regmap_field_read_poll_timeout(dsi->field_phy_status, + val, val & PHY_LOCK, + 1000, PHY_STATUS_TIMEOUT_US); if (ret) DRM_DEBUG_DRIVER("failed to wait phy lock state\n");

- ret = regmap_read_poll_timeout(dsi->regs, DSI_PHY_STATUS, - val, val & PHY_STOP_STATE_CLK_LANE, 1000, - PHY_STATUS_TIMEOUT_US); + ret = regmap_field_read_poll_timeout(dsi->field_phy_status, + val, val & PHY_STOP_STATE_CLK_LANE, + 1000, PHY_STATUS_TIMEOUT_US); if (ret) DRM_DEBUG_DRIVER("failed to wait phy clk lane stop state\n"); } @@ -789,10 +714,10 @@ static void dw_mipi_dsi_clear_err(struct dw_mipi_dsi *dsi) { u32 val;

- regmap_read(dsi->regs, DSI_INT_ST0, &val); - regmap_read(dsi->regs, DSI_INT_ST1, &val); - regmap_write(dsi->regs, DSI_INT_MSK0, 0); - regmap_write(dsi->regs, DSI_INT_MSK1, 0); + regmap_field_read(dsi->field_int_stat0, &val); + regmap_field_read(dsi->field_int_stat1, &val); + regmap_field_write(dsi->field_int_mask0, 0); + regmap_field_write(dsi->field_int_mask1, 0); }

static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge) @@ -977,6 +902,83 @@ static void dw_mipi_dsi_debugfs_remove(struct dw_mipi_dsi *dsi) { }

#endif /* CONFIG_DEBUG_FS */

+static void dw_mipi_dsi_get_hw_version(struct dw_mipi_dsi *dsi) +{ + regmap_read(dsi->regs, DSI_VERSION, &dsi->hw_version); + dsi->hw_version &= VERSION; + if (!dsi->hw_version) + dev_err(dsi->dev, "Failed to read DSI hw version register\n"); +} + +#define INIT_FIELD(f) INIT_FIELD_CFG(field_##f, cfg_##f) +#define INIT_FIELD_CFG(f, conf) \ + do { \ + dsi->f = devm_regmap_field_alloc(dsi->dev, dsi->regs, \ + variant->conf); \ + if (IS_ERR(dsi->f)) \ + dev_warn(dsi->dev, "Ignoring regmap field " #f "\n"); \ + } while (0) + + +static void dw_mipi_dsi_regmap_fields_init(struct dw_mipi_dsi *dsi) +{ + const struct dw_mipi_dsi_variant *variant = dsi->plat_data->variant; + + INIT_FIELD(dpi_18loosely_en); + INIT_FIELD(dpi_vid); + INIT_FIELD(dpi_color_coding); + INIT_FIELD(dpi_vsync_active_low); + INIT_FIELD(dpi_hsync_active_low); + INIT_FIELD(cmd_mode_ack_rqst_en); + INIT_FIELD(cmd_mode_all_lp_en); + INIT_FIELD(cmd_mode_en); + INIT_FIELD(cmd_pkt_status); + INIT_FIELD(vid_mode_en); + INIT_FIELD(vid_mode_type); + INIT_FIELD(vid_mode_low_power); + INIT_FIELD(vid_pkt_size); + INIT_FIELD(vid_hsa_time); + INIT_FIELD(vid_hbp_time); + INIT_FIELD(vid_hline_time); + INIT_FIELD(vid_vsa_time); + INIT_FIELD(vid_vbp_time); + INIT_FIELD(vid_vfp_time); + INIT_FIELD(vid_vactive_time); + INIT_FIELD(phy_txrequestclkhs); + INIT_FIELD(phy_testclr); + INIT_FIELD(phy_unshutdownz); + INIT_FIELD(phy_unrstz); + INIT_FIELD(phy_enableclk); + INIT_FIELD(phy_nlanes); + INIT_FIELD(phy_stop_wait_time); + INIT_FIELD(phy_status); + INIT_FIELD(pckhdl_cfg); + INIT_FIELD(hstx_timeout_counter); + INIT_FIELD(lprx_timeout_counter); + INIT_FIELD(int_stat0); + INIT_FIELD(int_stat1); + INIT_FIELD(int_mask0); + INIT_FIELD(int_mask1); + INIT_FIELD(gen_hdr); + INIT_FIELD(gen_payload); + INIT_FIELD(phy_bta_time); + INIT_FIELD(vid_mode_vpg_en); + INIT_FIELD(vid_mode_vpg_horiz); + INIT_FIELD(phy_clklp2hs_time); + INIT_FIELD(phy_clkhs2lp_time); + INIT_FIELD(phy_forcepll); + + if (dsi->hw_version == HWVER_131) { + INIT_FIELD_CFG(field_phy_max_rd_time, cfg_phy_max_rd_time_v131); + INIT_FIELD_CFG(field_phy_lp2hs_time, cfg_phy_lp2hs_time_v131); + INIT_FIELD_CFG(field_phy_hs2lp_time, cfg_phy_hs2lp_time_v131); + } else { + INIT_FIELD(phy_max_rd_time); + INIT_FIELD(phy_lp2hs_time); + INIT_FIELD(phy_hs2lp_time); + } +} + static struct dw_mipi_dsi * __dw_mipi_dsi_probe(struct platform_device *pdev, const struct dw_mipi_dsi_plat_data *plat_data) @@ -999,8 +1001,8 @@ __dw_mipi_dsi_probe(struct platform_device *pdev, }

dsi->regs = plat_data->regs; - if (!dsi->regs) { - DRM_ERROR("DSI regmap not supplied by platform driver\n"); + if (!dsi->regs || !plat_data->variant) { + DRM_ERROR("DSI regmap not configured by platform driver\n"); return ERR_PTR(-ENODEV); }

@@ -1039,6 +1041,8 @@ __dw_mipi_dsi_probe(struct platform_device *pdev, clk_disable_unprepare(dsi->pclk); }

+ dw_mipi_dsi_get_hw_version(dsi); + dw_mipi_dsi_regmap_fields_init(dsi); dw_mipi_dsi_debugfs_init(dsi); pm_runtime_enable(dev);

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 3c33ed1fa805..806db9c6c4bc 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -166,6 +166,70 @@ #define RK3399_TXRX_ENABLECLK BIT(6) #define RK3399_TXRX_BASEDIR BIT(5)

+#define DSI_DPI_VCID 0x0c +#define DSI_DPI_COLOR_CODING 0x10 +#define DSI_DPI_CFG_POL 0x14 +#define DSI_PCKHDL_CFG 0x2c +#define DSI_CMD_MODE_CFG 0x68 +#define DSI_VID_MODE_CFG 0x38 +#define DSI_MODE_CFG 0x34 +#define DSI_VID_PKT_SIZE 0x3c +#define DSI_LPCLK_CTRL 0x94 +#define DSI_TO_CNT_CFG 0x78 +#define DSI_PHY_IF_CFG 0xa4 +#define DSI_PHY_TMR_CFG 0x9c +#define DSI_PHY_TMR_RD_CFG 0xf4 +#define DSI_PHY_TMR_LPCLK_CFG 0x98 +#define DSI_PHY_RSTZ 0xa0 +#define DSI_PHY_STATUS 0xb0 +#define DSI_PHY_TST_CTRL0 0xb4 +#define DSI_GEN_HDR 0x6c +#define DSI_GEN_PLD_DATA 0x70 +#define DSI_CMD_PKT_STATUS 0x74 +#define DSI_BTA_TO_CNT 0x8c +#define DSI_VID_NUM_CHUNKS 0x40 +#define DSI_VID_NULL_SIZE 0x44 +#define DSI_VID_HSA_TIME 0x48 +#define DSI_VID_HBP_TIME 0x4c +#define DSI_VID_HLINE_TIME 0x50 +#define DSI_VID_VSA_LINES 0x54 +#define DSI_VID_VBP_LINES 0x58 +#define DSI_VID_VFP_LINES 0x5c +#define DSI_VID_VACTIVE_LINES 0x60 +#define DSI_EDPI_CMD_SIZE 0x64 + +#define MAX_RD_PKT_SIZE_LP BIT(24) +#define DCS_LW_TX_LP BIT(19) +#define DCS_SR_0P_TX_LP BIT(18) +#define DCS_SW_1P_TX_LP BIT(17) +#define DCS_SW_0P_TX_LP BIT(16) +#define GEN_LW_TX_LP BIT(14) +#define GEN_SR_2P_TX_LP BIT(13) +#define GEN_SR_1P_TX_LP BIT(12) +#define GEN_SR_0P_TX_LP BIT(11) +#define GEN_SW_2P_TX_LP BIT(10) +#define GEN_SW_1P_TX_LP BIT(9) +#define GEN_SW_0P_TX_LP BIT(8) +#define TEAR_FX_EN BIT(0) + +#define CMD_MODE_ALL_LP (MAX_RD_PKT_SIZE_LP | \ + DCS_LW_TX_LP | \ + DCS_SR_0P_TX_LP | \ + DCS_SW_1P_TX_LP | \ + DCS_SW_0P_TX_LP | \ + GEN_LW_TX_LP | \ + GEN_SR_2P_TX_LP | \ + GEN_SR_1P_TX_LP | \ + GEN_SR_0P_TX_LP | \ + GEN_SW_2P_TX_LP | \ + GEN_SW_1P_TX_LP | \ + GEN_SW_0P_TX_LP) + +#define DSI_INT_ST0 0xbc +#define DSI_INT_ST1 0xc0 +#define DSI_INT_MSK0 0xc4 +#define DSI_INT_MSK1 0xc8 + #define HIWORD_UPDATE(val, mask) (val | (mask) << 16)

#define to_dsi(nm) container_of(nm, struct dw_mipi_dsi_rockchip, nm) @@ -896,6 +960,59 @@ static const struct regmap_config rockchip_dsi_regmap_config = { .name = DRIVER_NAME, };

+static struct dw_mipi_dsi_variant default_rk_stm_dsi_variant = { + .cfg_dpi_color_coding = REG_FIELD(DSI_DPI_COLOR_CODING, 0, 3), + .cfg_dpi_18loosely_en = REG_FIELD(DSI_DPI_COLOR_CODING, 8, 8), + .cfg_dpi_vid = REG_FIELD(DSI_DPI_VCID, 0, 2), + .cfg_dpi_vsync_active_low = REG_FIELD(DSI_DPI_CFG_POL, 1, 1), + .cfg_dpi_hsync_active_low = REG_FIELD(DSI_DPI_CFG_POL, 2, 2), + .cfg_cmd_mode_ack_rqst_en = REG_FIELD(DSI_CMD_MODE_CFG, 1, 1), + .cfg_cmd_mode_all_lp_en = REG_FIELD(DSI_CMD_MODE_CFG, 8, 24), + .cfg_cmd_mode_en = REG_FIELD(DSI_MODE_CFG, 0, 31), + .cfg_cmd_pkt_status = REG_FIELD(DSI_CMD_PKT_STATUS, 0, 31), + .cfg_vid_mode_en = REG_FIELD(DSI_MODE_CFG, 0, 31), + .cfg_vid_mode_type = REG_FIELD(DSI_VID_MODE_CFG, 0, 1), + .cfg_vid_mode_low_power = REG_FIELD(DSI_VID_MODE_CFG, 8, 13), + .cfg_vid_mode_vpg_en = REG_FIELD(DSI_VID_MODE_CFG, 16, 16), + .cfg_vid_mode_vpg_horiz = REG_FIELD(DSI_VID_MODE_CFG, 24, 24), + .cfg_vid_pkt_size = REG_FIELD(DSI_VID_PKT_SIZE, 0, 10), + .cfg_vid_hsa_time = REG_FIELD(DSI_VID_HSA_TIME, 0, 31), + .cfg_vid_hbp_time = REG_FIELD(DSI_VID_HBP_TIME, 0, 31), + .cfg_vid_hline_time = REG_FIELD(DSI_VID_HLINE_TIME, 0, 31), + .cfg_vid_vsa_time = REG_FIELD(DSI_VID_VSA_LINES, 0, 31), + .cfg_vid_vbp_time = REG_FIELD(DSI_VID_VBP_LINES, 0, 31), + .cfg_vid_vfp_time = REG_FIELD(DSI_VID_VFP_LINES, 0, 31), + .cfg_vid_vactive_time = REG_FIELD(DSI_VID_VACTIVE_LINES, 0, 31), + .cfg_phy_txrequestclkhs = REG_FIELD(DSI_LPCLK_CTRL, 0, 0), + .cfg_phy_bta_time = REG_FIELD(DSI_BTA_TO_CNT, 0, 31), + .cfg_phy_max_rd_time = REG_FIELD(DSI_PHY_TMR_CFG, 0, 15), + .cfg_phy_lp2hs_time = REG_FIELD(DSI_PHY_TMR_CFG, 16, 23), + .cfg_phy_hs2lp_time = REG_FIELD(DSI_PHY_TMR_CFG, 24, 31), + .cfg_phy_max_rd_time_v131 = REG_FIELD(DSI_PHY_TMR_RD_CFG, 0, 15), + .cfg_phy_lp2hs_time_v131 = REG_FIELD(DSI_PHY_TMR_CFG, 0, 15), + .cfg_phy_hs2lp_time_v131 = REG_FIELD(DSI_PHY_TMR_CFG, 16, 31), + .cfg_phy_clklp2hs_time = REG_FIELD(DSI_PHY_TMR_LPCLK_CFG, 0, 15), + .cfg_phy_clkhs2lp_time = REG_FIELD(DSI_PHY_TMR_LPCLK_CFG, 16, 31), + .cfg_phy_testclr = REG_FIELD(DSI_PHY_TST_CTRL0, 0, 0), + .cfg_phy_unshutdownz = REG_FIELD(DSI_PHY_RSTZ, 0, 0), + .cfg_phy_unrstz = REG_FIELD(DSI_PHY_RSTZ, 1, 1), + .cfg_phy_enableclk = REG_FIELD(DSI_PHY_RSTZ, 2, 2), + .cfg_phy_forcepll = REG_FIELD(DSI_PHY_RSTZ, 3, 3), + .cfg_phy_nlanes = REG_FIELD(DSI_PHY_IF_CFG, 0, 1), + .cfg_phy_stop_wait_time = REG_FIELD(DSI_PHY_IF_CFG, 8, 15), + .cfg_phy_status = REG_FIELD(DSI_PHY_STATUS, 0, 0), + .cfg_pckhdl_cfg = REG_FIELD(DSI_PCKHDL_CFG, 0, 4), + .cfg_hstx_timeout_counter = REG_FIELD(DSI_TO_CNT_CFG, 16, 31), + .cfg_lprx_timeout_counter = REG_FIELD(DSI_TO_CNT_CFG, 0, 15), + .cfg_int_stat0 = REG_FIELD(DSI_INT_ST0, 0, 31), + .cfg_int_stat1 = REG_FIELD(DSI_INT_ST1, 0, 31), + .cfg_int_mask0 = REG_FIELD(DSI_INT_MSK0, 0, 31), + .cfg_int_mask1 = REG_FIELD(DSI_INT_MSK1, 0, 31), + .cfg_gen_hdr = REG_FIELD(DSI_GEN_HDR, 0, 31), + .cfg_gen_payload = REG_FIELD(DSI_GEN_PLD_DATA, 0, 31), + .val_cmd_mode_all_lp = CMD_MODE_ALL_LP, +}; + static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -975,6 +1092,7 @@ static int dw_mipi_dsi_rockchip_probe(struct platform_device *pdev)

dsi->dev = dev; dsi->pdata.regs = dsi->regs; + dsi->pdata.variant = &default_rk_stm_dsi_variant; dsi->pdata.max_data_lanes = dsi->cdata->max_data_lanes; dsi->pdata.phy_ops = &dw_mipi_dsi_rockchip_phy_ops; dsi->pdata.host_ops = &dw_mipi_dsi_rockchip_host_ops; diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c index cc233271347b..586f358a9f2e 100644 --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c @@ -60,6 +60,70 @@ #define ODF_MIN 1 #define ODF_MAX 8

+#define DSI_DPI_VCID 0x0c +#define DSI_DPI_COLOR_CODING 0x10 +#define DSI_DPI_CFG_POL 0x14 +#define DSI_PCKHDL_CFG 0x2c +#define DSI_CMD_MODE_CFG 0x68 +#define DSI_VID_MODE_CFG 0x38 +#define DSI_MODE_CFG 0x34 +#define DSI_VID_PKT_SIZE 0x3c +#define DSI_LPCLK_CTRL 0x94 +#define DSI_TO_CNT_CFG 0x78 +#define DSI_PHY_IF_CFG 0xa4 +#define DSI_PHY_TMR_CFG 0x9c +#define DSI_PHY_TMR_RD_CFG 0xf4 +#define DSI_PHY_TMR_LPCLK_CFG 0x98 +#define DSI_PHY_RSTZ 0xa0 +#define DSI_PHY_STATUS 0xb0 +#define DSI_PHY_TST_CTRL0 0xb4 +#define DSI_GEN_HDR 0x6c +#define DSI_GEN_PLD_DATA 0x70 +#define DSI_CMD_PKT_STATUS 0x74 +#define DSI_BTA_TO_CNT 0x8c +#define DSI_VID_NUM_CHUNKS 0x40 +#define DSI_VID_NULL_SIZE 0x44 +#define DSI_VID_HSA_TIME 0x48 +#define DSI_VID_HBP_TIME 0x4c +#define DSI_VID_HLINE_TIME 0x50 +#define DSI_VID_VSA_LINES 0x54 +#define DSI_VID_VBP_LINES 0x58 +#define DSI_VID_VFP_LINES 0x5c +#define DSI_VID_VACTIVE_LINES 0x60 +#define DSI_EDPI_CMD_SIZE 0x64 + +#define MAX_RD_PKT_SIZE_LP BIT(24) +#define DCS_LW_TX_LP BIT(19) +#define DCS_SR_0P_TX_LP BIT(18) +#define DCS_SW_1P_TX_LP BIT(17) +#define DCS_SW_0P_TX_LP BIT(16) +#define GEN_LW_TX_LP BIT(14) +#define GEN_SR_2P_TX_LP BIT(13) +#define GEN_SR_1P_TX_LP BIT(12) +#define GEN_SR_0P_TX_LP BIT(11) +#define GEN_SW_2P_TX_LP BIT(10) +#define GEN_SW_1P_TX_LP BIT(9) +#define GEN_SW_0P_TX_LP BIT(8) +#define TEAR_FX_EN BIT(0) + +#define CMD_MODE_ALL_LP (MAX_RD_PKT_SIZE_LP | \ + DCS_LW_TX_LP | \ + DCS_SR_0P_TX_LP | \ + DCS_SW_1P_TX_LP | \ + DCS_SW_0P_TX_LP | \ + GEN_LW_TX_LP | \ + GEN_SR_2P_TX_LP | \ + GEN_SR_1P_TX_LP | \ + GEN_SR_0P_TX_LP | \ + GEN_SW_2P_TX_LP | \ + GEN_SW_1P_TX_LP | \ + GEN_SW_0P_TX_LP) + +#define DSI_INT_ST0 0xbc +#define DSI_INT_ST1 0xc0 +#define DSI_INT_MSK0 0xc4 +#define DSI_INT_MSK1 0xc8 + /* dsi color format coding according to the datasheet */ enum dsi_color { DSI_RGB565_CONF1, @@ -340,6 +404,57 @@ static const struct regmap_config stm_dsi_regmap_config = { .name = DRIVER_NAME, };

+static struct dw_mipi_dsi_variant default_rk_stm_dsi_variant = { + .cfg_dpi_color_coding = REG_FIELD(DSI_DPI_COLOR_CODING, 0, 3), + .cfg_dpi_18loosely_en = REG_FIELD(DSI_DPI_COLOR_CODING, 8, 8), + .cfg_dpi_vid = REG_FIELD(DSI_DPI_VCID, 0, 2), + .cfg_dpi_vsync_active_low = REG_FIELD(DSI_DPI_CFG_POL, 1, 1), + .cfg_dpi_hsync_active_low = REG_FIELD(DSI_DPI_CFG_POL, 2, 2), + .cfg_cmd_mode_ack_rqst_en = REG_FIELD(DSI_CMD_MODE_CFG, 1, 1), + .cfg_cmd_mode_all_lp_en = REG_FIELD(DSI_CMD_MODE_CFG, 8, 24), + .cfg_cmd_mode_en = REG_FIELD(DSI_MODE_CFG, 0, 31), + .cfg_cmd_pkt_status = REG_FIELD(DSI_CMD_PKT_STATUS, 0, 31), + .cfg_vid_mode_en = REG_FIELD(DSI_MODE_CFG, 0, 31), + .cfg_vid_mode_type = REG_FIELD(DSI_VID_MODE_CFG, 0, 1), + .cfg_vid_mode_low_power = REG_FIELD(DSI_VID_MODE_CFG, 8, 13), + .cfg_vid_pkt_size = REG_FIELD(DSI_VID_PKT_SIZE, 0, 10), + .cfg_vid_hsa_time = REG_FIELD(DSI_VID_HSA_TIME, 0, 31), + .cfg_vid_hbp_time = REG_FIELD(DSI_VID_HBP_TIME, 0, 31), + .cfg_vid_hline_time = REG_FIELD(DSI_VID_HLINE_TIME, 0, 31), + .cfg_vid_vsa_time = REG_FIELD(DSI_VID_VSA_LINES, 0, 31), + .cfg_vid_vbp_time = REG_FIELD(DSI_VID_VBP_LINES, 0, 31), + .cfg_vid_vfp_time = REG_FIELD(DSI_VID_VFP_LINES, 0, 31), + .cfg_vid_vactive_time = REG_FIELD(DSI_VID_VACTIVE_LINES, 0, 31), + .cfg_phy_txrequestclkhs = REG_FIELD(DSI_LPCLK_CTRL, 0, 0), + .cfg_phy_bta_time = REG_FIELD(DSI_BTA_TO_CNT, 0, 31), + .cfg_phy_max_rd_time = REG_FIELD(DSI_PHY_TMR_CFG, 0, 15), + .cfg_phy_lp2hs_time = REG_FIELD(DSI_PHY_TMR_CFG, 16, 23), + .cfg_phy_hs2lp_time = REG_FIELD(DSI_PHY_TMR_CFG, 24, 31), + .cfg_phy_max_rd_time_v131 = REG_FIELD(DSI_PHY_TMR_RD_CFG, 0, 15), + .cfg_phy_lp2hs_time_v131 = REG_FIELD(DSI_PHY_TMR_CFG, 0, 15), + .cfg_phy_hs2lp_time_v131 = REG_FIELD(DSI_PHY_TMR_CFG, 16, 31), + .cfg_phy_clklp2hs_time = REG_FIELD(DSI_PHY_TMR_LPCLK_CFG, 0, 15), + .cfg_phy_clkhs2lp_time = REG_FIELD(DSI_PHY_TMR_LPCLK_CFG, 16, 31), + .cfg_phy_testclr = REG_FIELD(DSI_PHY_TST_CTRL0, 0, 0), + .cfg_phy_unshutdownz = REG_FIELD(DSI_PHY_RSTZ, 0, 0), + .cfg_phy_unrstz = REG_FIELD(DSI_PHY_RSTZ, 1, 1), + .cfg_phy_enableclk = REG_FIELD(DSI_PHY_RSTZ, 2, 2), + .cfg_phy_forcepll = REG_FIELD(DSI_PHY_RSTZ, 3, 3), + .cfg_phy_nlanes = REG_FIELD(DSI_PHY_IF_CFG, 0, 1), + .cfg_phy_stop_wait_time = REG_FIELD(DSI_PHY_IF_CFG, 8, 15), + .cfg_phy_status = REG_FIELD(DSI_PHY_STATUS, 0, 0), + .cfg_pckhdl_cfg = REG_FIELD(DSI_PCKHDL_CFG, 0, 4), + .cfg_hstx_timeout_counter = REG_FIELD(DSI_TO_CNT_CFG, 16, 31), + .cfg_lprx_timeout_counter = REG_FIELD(DSI_TO_CNT_CFG, 0, 15), + .cfg_int_stat0 = REG_FIELD(DSI_INT_ST0, 0, 31), + .cfg_int_stat1 = REG_FIELD(DSI_INT_ST1, 0, 31), + .cfg_int_mask0 = REG_FIELD(DSI_INT_MSK0, 0, 31), + .cfg_int_mask1 = REG_FIELD(DSI_INT_MSK1, 0, 31), + .cfg_gen_hdr = REG_FIELD(DSI_GEN_HDR, 0, 31), + .cfg_gen_payload = REG_FIELD(DSI_GEN_PLD_DATA, 0, 31), + .val_cmd_mode_all_lp = CMD_MODE_ALL_LP, +}; + static int dw_mipi_dsi_stm_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -417,6 +532,7 @@ static int dw_mipi_dsi_stm_probe(struct platform_device *pdev) }

dw_mipi_dsi_stm_plat_data.regs = dsi->regs; + dw_mipi_dsi_stm_plat_data.variant = &default_rk_stm_dsi_variant; dw_mipi_dsi_stm_plat_data.priv_data = dsi;

platform_set_drvdata(pdev, dsi); diff --git a/include/drm/bridge/dw_mipi_dsi.h b/include/drm/bridge/dw_mipi_dsi.h index ecc1897efa62..57cf46f15720 100644 --- a/include/drm/bridge/dw_mipi_dsi.h +++ b/include/drm/bridge/dw_mipi_dsi.h @@ -36,8 +36,66 @@ struct dw_mipi_dsi_host_ops { struct mipi_dsi_device *dsi); };

+struct dw_mipi_dsi_variant { + /* Regmap field configs for DSI adapter */ + struct reg_field cfg_dpi_18loosely_en; + struct reg_field cfg_dpi_color_coding; + struct reg_field cfg_dpi_vid; + struct reg_field cfg_dpi_vsync_active_low; + struct reg_field cfg_dpi_hsync_active_low; + struct reg_field cfg_cmd_mode_en; + struct reg_field cfg_cmd_mode_ack_rqst_en; + struct reg_field cfg_cmd_mode_all_lp_en; + struct reg_field cfg_cmd_pkt_status; + struct reg_field cfg_vid_mode_en; + struct reg_field cfg_vid_mode_type; + struct reg_field cfg_vid_mode_low_power; + struct reg_field cfg_vid_mode_vpg_en; + struct reg_field cfg_vid_mode_vpg_horiz; + struct reg_field cfg_vid_pkt_size; + struct reg_field cfg_vid_hsa_time; + struct reg_field cfg_vid_hbp_time; + struct reg_field cfg_vid_hline_time; + struct reg_field cfg_vid_vsa_time; + struct reg_field cfg_vid_vbp_time; + struct reg_field cfg_vid_vfp_time; + struct reg_field cfg_vid_vactive_time; + struct reg_field cfg_phy_txrequestclkhs; + struct reg_field cfg_phy_bta_time; + struct reg_field cfg_phy_max_rd_time; + struct reg_field cfg_phy_lp2hs_time; + struct reg_field cfg_phy_hs2lp_time; + struct reg_field cfg_phy_max_rd_time_v131; + struct reg_field cfg_phy_lp2hs_time_v131; + struct reg_field cfg_phy_hs2lp_time_v131; + struct reg_field cfg_phy_clklp2hs_time; + struct reg_field cfg_phy_clkhs2lp_time; + struct reg_field cfg_phy_testclr; + struct reg_field cfg_phy_unshutdownz; + struct reg_field cfg_phy_unrstz; + struct reg_field cfg_phy_enableclk; + struct reg_field cfg_phy_forcepll; + struct reg_field cfg_phy_nlanes; + struct reg_field cfg_phy_stop_wait_time; + struct reg_field cfg_phy_status; + struct reg_field cfg_pckhdl_cfg; + struct reg_field cfg_hstx_timeout_counter; + struct reg_field cfg_lprx_timeout_counter; + struct reg_field cfg_int_stat0; + struct reg_field cfg_int_stat1; + struct reg_field cfg_int_mask0; + struct reg_field cfg_int_mask1; + struct reg_field cfg_gen_hdr; + struct reg_field cfg_gen_payload; + + /* values to write to registers */ + u32 val_cmd_mode_all_lp; +}; + struct dw_mipi_dsi_plat_data { struct regmap *regs; + struct dw_mipi_dsi_variant *variant; + unsigned int max_data_lanes;

enum drm_mode_status (*mode_valid)(void *priv_data,

Signed-off-by: Sjoerd Simons sjoerd.simons@collabora.com Signed-off-by: Martyn Welch martyn.welch@collabora.com Signed-off-by: Adrian Ratiu adrian.ratiu@collabora.com --- .../bindings/display/imx/mipi-dsi.txt | 56 +++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/imx/mipi-dsi.txt

diff --git a/Documentation/devicetree/bindings/display/imx/mipi-dsi.txt b/Documentation/devicetree/bindings/display/imx/mipi-dsi.txt new file mode 100644 index 000000000000..3f05c32ef963 --- /dev/null +++ b/Documentation/devicetree/bindings/display/imx/mipi-dsi.txt @@ -0,0 +1,56 @@ +Freescale i.MX6 DW MIPI DSI Host Controller +=========================================== + +The DSI host controller is a Synopsys DesignWare MIPI DSI v1.01 IP +with a companion PHY IP. + +These DT bindings follow the Synopsys DW MIPI DSI bindings defined in +Documentation/devicetree/bindings/display/bridge/dw_mipi_dsi.txt with +the following device-specific properties. + +Required properties: + +- #address-cells: Should be <1>. +- #size-cells: Should be <0>. +- compatible: "fsl,imx6q-mipi-dsi", "snps,dw-mipi-dsi". +- reg: See dw_mipi_dsi.txt. +- interrupts: The controller's CPU interrupt. +- clocks, clock-names: Phandles to the controller's pll reference + clock(ref) and APB clock(pclk), as described in [1]. +- ports: a port node with endpoint definitions as defined in [2]. +- gpr: Should be <&gpr>. + Phandle to the iomuxc-gpr region containing the multiplexer + control register. + +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt +[2] Documentation/devicetree/bindings/media/video-interfaces.txt + +Example: + + mipi_dsi: mipi@21e0000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx6q-mipi-dsi", "snps,dw-mipi-dsi"; + reg = <0x021e0000 0x4000>; + interrupts = <0 102 IRQ_TYPE_LEVEL_HIGH>; + gpr = <&gpr>; + clocks = <&clks IMX6QDL_CLK_MIPI_CORE_CFG>, + <&clks IMX6QDL_CLK_MIPI_IPG>; + clock-names = "ref", "pclk"; + status = "okay"; + + ports { + port@0 { + reg = <0>; + mipi_mux_0: endpoint { + remote-endpoint = <&ipu1_di0_mipi>; + }; + }; + port@1 { + reg = <1>; + mipi_mux_1: endpoint { + remote-endpoint = <&ipu1_di1_mipi>; + }; + }; + }; + };