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path: root/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
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Diffstat (limited to 'drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c')
-rw-r--r--drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c108
1 files changed, 62 insertions, 46 deletions
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 63c7a01b7053..d9cca4fd66ec 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
@@ -201,7 +221,6 @@ struct dw_mipi_dsi {
struct drm_bridge bridge;
struct mipi_dsi_host dsi_host;
struct drm_bridge *panel_bridge;
- bool is_panel_bridge;
struct device *dev;
void __iomem *base;
@@ -277,7 +296,6 @@ static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host,
bridge = drm_panel_bridge_add(panel, DRM_MODE_CONNECTOR_DSI);
if (IS_ERR(bridge))
return PTR_ERR(bridge);
- dsi->is_panel_bridge = true;
}
dsi->panel_bridge = bridge;
@@ -292,8 +310,7 @@ static int dw_mipi_dsi_host_detach(struct mipi_dsi_host *host,
{
struct dw_mipi_dsi *dsi = host_to_dsi(host);
- if (dsi->is_panel_bridge)
- drm_panel_bridge_remove(dsi->panel_bridge);
+ drm_of_panel_bridge_remove(host->dev->of_node, 1, 0);
drm_bridge_remove(&dsi->bridge);
@@ -307,7 +324,7 @@ 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 +523,8 @@ 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 +537,7 @@ 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 +552,7 @@ 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 +567,7 @@ 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 +588,7 @@ 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 +701,13 @@ 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 +882,14 @@ __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) {
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 09:45:23 +0300