diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 103 |
1 files changed, 61 insertions, 42 deletions
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 63c7a01..f4f633a 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -30,19 +30,20 @@ #include <video/mipi_display.h> #define DSI_VERSION 0x00 + #define DSI_PWR_UP 0x04 #define RESET 0 #define POWERUP BIT(0) #define DSI_CLKMGR_CFG 0x08 -#define TO_CLK_DIVIDSION(div) (((div) & 0xff) << 8) -#define TX_ESC_CLK_DIVIDSION(div) (((div) & 0xff) << 0) +#define TO_CLK_DIVISION(div) (((div) & 0xff) << 8) +#define TX_ESC_CLK_DIVISION(div) ((div) & 0xff) #define DSI_DPI_VCID 0x0c -#define DPI_VID(vid) (((vid) & 0x3) << 0) +#define DPI_VCID(vcid) ((vcid) & 0x3) #define DSI_DPI_COLOR_CODING 0x10 -#define EN18_LOOSELY BIT(8) +#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 @@ -61,22 +62,25 @@ #define OUTVACT_LPCMD_TIME(p) (((p) & 0xff) << 16) #define INVACT_LPCMD_TIME(p) ((p) & 0xff) +#define DSI_DBI_VCID 0x1c #define DSI_DBI_CFG 0x20 +#define DSI_DBI_PARTITIONING_EN 0x24 #define DSI_DBI_CMDSIZE 0x28 #define DSI_PCKHDL_CFG 0x2c -#define EN_CRC_RX BIT(4) -#define EN_ECC_RX BIT(3) -#define EN_BTA BIT(2) -#define EN_EOTP_RX BIT(1) -#define EN_EOTP_TX BIT(0) +#define CRC_RX_EN BIT(4) +#define ECC_RX_EN BIT(3) +#define BTA_EN BIT(2) +#define EOTP_RX_EN BIT(1) +#define EOTP_TX_EN BIT(0) + +#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 FRAME_BTA_ACK BIT(14) #define ENABLE_LOW_POWER (0x3f << 8) #define ENABLE_LOW_POWER_MASK (0x3f << 8) #define VID_MODE_TYPE_NON_BURST_SYNC_PULSES 0x0 @@ -85,8 +89,13 @@ #define VID_MODE_TYPE_MASK 0x3 #define DSI_VID_PKT_SIZE 0x3c -#define VID_PKT_SIZE(p) (((p) & 0x3fff) << 0) -#define VID_PKT_MAX_SIZE 0x3fff +#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 @@ -95,6 +104,8 @@ #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) @@ -108,8 +119,8 @@ #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 EN_ACK_RQST BIT(1) -#define EN_TEAR_FX BIT(0) +#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 | \ @@ -125,27 +136,31 @@ GEN_SW_0P_TX_LP) #define DSI_GEN_HDR 0x6c +/* TODO These 2 defines will be reworked thanks to mipi_dsi_create_packet() */ #define GEN_HDATA(data) (((data) & 0xffff) << 8) -#define GEN_HDATA_MASK (0xffff << 8) #define GEN_HTYPE(type) (((type) & 0xff) << 0) -#define GEN_HTYPE_MASK 0xff #define DSI_GEN_PLD_DATA 0x70 #define DSI_CMD_PKT_STATUS 0x74 -#define GEN_CMD_EMPTY BIT(0) -#define GEN_CMD_FULL BIT(1) -#define GEN_PLD_W_EMPTY BIT(2) -#define GEN_PLD_W_FULL BIT(3) -#define GEN_PLD_R_EMPTY BIT(4) -#define GEN_PLD_R_FULL BIT(5) #define GEN_RD_CMD_BUSY BIT(6) +#define GEN_PLD_R_FULL BIT(5) +#define GEN_PLD_R_EMPTY BIT(4) +#define GEN_PLD_W_FULL BIT(3) +#define GEN_PLD_W_EMPTY BIT(2) +#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) @@ -154,6 +169,7 @@ #define PHY_CLKHS2LP_TIME(lbcc) (((lbcc) & 0x3ff) << 16) #define PHY_CLKLP2HS_TIME(lbcc) ((lbcc) & 0x3ff) +/* TODO Next register is slightly different between 1.30 & 1.31 IP version */ #define DSI_PHY_TMR_CFG 0x9c #define PHY_HS2LP_TIME(lbcc) (((lbcc) & 0xff) << 24) #define PHY_LP2HS_TIME(lbcc) (((lbcc) & 0xff) << 16) @@ -170,12 +186,15 @@ #define PHY_UNSHUTDOWNZ BIT(0) #define DSI_PHY_IF_CFG 0xa4 -#define N_LANES(n) ((((n) - 1) & 0x3) << 0) #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 LOCK BIT(0) -#define STOP_STATE_CLK_LANE BIT(2) +#define PHY_STOP_STATE_CLK_LANE BIT(2) +#define PHY_LOCK BIT(0) #define DSI_PHY_TST_CTRL0 0xb4 #define PHY_TESTCLK BIT(1) @@ -187,12 +206,13 @@ #define PHY_TESTEN BIT(16) #define PHY_UNTESTEN 0 #define PHY_TESTDOUT(n) (((n) & 0xff) << 8) -#define PHY_TESTDIN(n) (((n) & 0xff) << 0) +#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 PHY_STATUS_TIMEOUT_US 10000 #define CMD_PKT_STATUS_TIMEOUT_US 20000 @@ -307,7 +327,7 @@ static void dw_mipi_message_config(struct dw_mipi_dsi *dsi, u32 val = 0; if (msg->flags & MIPI_DSI_MSG_REQ_ACK) - val |= EN_ACK_RQST; + val |= ACK_RQST_EN; if (lpm) val |= CMD_MODE_ALL_LP; @@ -506,8 +526,8 @@ static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) * timeout clock division should be computed with the * high speed transmission counter timeout and byte lane... */ - dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVIDSION(10) | - TX_ESC_CLK_DIVIDSION(esc_clk_division)); + dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVISION(10) | + TX_ESC_CLK_DIVISION(esc_clk_division)); } static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi, @@ -520,7 +540,7 @@ static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi, color = DPI_COLOR_CODING_24BIT; break; case MIPI_DSI_FMT_RGB666: - color = DPI_COLOR_CODING_18BIT_2 | EN18_LOOSELY; + color = DPI_COLOR_CODING_18BIT_2 | LOOSELY18_EN; break; case MIPI_DSI_FMT_RGB666_PACKED: color = DPI_COLOR_CODING_18BIT_1; @@ -535,7 +555,7 @@ 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_VID(dsi->channel)); + 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); /* @@ -550,7 +570,7 @@ 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) { - dsi_write(dsi, DSI_PCKHDL_CFG, EN_CRC_RX | EN_ECC_RX | EN_BTA); + dsi_write(dsi, DSI_PCKHDL_CFG, CRC_RX_EN | ECC_RX_EN | BTA_EN); } static void dw_mipi_dsi_video_packet_config(struct dw_mipi_dsi *dsi, @@ -571,7 +591,7 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi) /* * TODO dw drv improvements * compute high speed transmission counter timeout according - * to the timeout clock division (TO_CLK_DIVIDSION) and byte lane... + * 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)); /* @@ -684,13 +704,13 @@ static void dw_mipi_dsi_dphy_enable(struct dw_mipi_dsi *dsi) dsi_write(dsi, DSI_PHY_RSTZ, PHY_ENFORCEPLL | PHY_ENABLECLK | PHY_UNRSTZ | PHY_UNSHUTDOWNZ); - ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS, - val, val & LOCK, 1000, PHY_STATUS_TIMEOUT_US); + ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS, val, + val & PHY_LOCK, 1000, PHY_STATUS_TIMEOUT_US); if (ret < 0) DRM_DEBUG_DRIVER("failed to wait phy lock state\n"); ret = readl_poll_timeout(dsi->base + DSI_PHY_STATUS, - val, val & STOP_STATE_CLK_LANE, 1000, + val, val & PHY_STOP_STATE_CLK_LANE, 1000, PHY_STATUS_TIMEOUT_US); if (ret < 0) DRM_DEBUG_DRIVER("failed to wait phy clk lane stop state\n"); @@ -865,15 +885,14 @@ __dw_mipi_dsi_probe(struct platform_device *pdev, * Note that the reset was not defined in the initial device tree, so * we have to be prepared for it not being found. */ - apb_rst = devm_reset_control_get(dev, "apb"); + apb_rst = devm_reset_control_get_optional_exclusive(dev, "apb"); if (IS_ERR(apb_rst)) { ret = PTR_ERR(apb_rst); - if (ret == -ENOENT) { - apb_rst = NULL; - } else { + + if (ret != -EPROBE_DEFER) dev_err(dev, "Unable to get reset control: %d\n", ret); - return ERR_PTR(ret); - } + + return ERR_PTR(ret); } if (apb_rst) { |
