On 26.07.2018 09:36, Archit Taneja wrote:
>
> On Wednesday 25 July 2018 09:16 PM, Andrzej Hajda wrote:
>> Add a drm_bridge driver for the Toshiba TC358764 DSI to LVDS bridge.
>>
>> Changes in v4:
>> - removed license blob,
>> - ordered includes,
>> - added error handling,
>> - fixed reset GPIO handling,
>> - added missing calls to the panel,
>> - custom OF graph code replaced with helpers,
>> - removed tc358764_poweroff from remove callback.
>> v5:
>> - fixed supply names,
>> - fixed broken console - added connector to fb_helper,
>> - added detach callback - unbinding works,
>> - fixed typo in error checking code,
>> - removed sparse bridge->encoder check - core does it already.
>>
>> Signed-off-by: Andrzej Hajda <a.ha...@samsung.com>
>> Signed-off-by: Maciej Purski <m.pur...@samsung.com>
>> [ a.ha...@samsung.com: v4, v5 ]
>> Signed-off-by: Andrzej Hajda <a.ha...@samsung.com>
>> ---
>> drivers/gpu/drm/bridge/Kconfig | 8 +
>> drivers/gpu/drm/bridge/Makefile | 1 +
>> drivers/gpu/drm/bridge/tc358764.c | 499 ++++++++++++++++++++++++++++++
>> 3 files changed, 508 insertions(+)
>> create mode 100644 drivers/gpu/drm/bridge/tc358764.c
>>
>> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
>> index fa2c7997e2fd..f3da8a716833 100644
>> --- a/drivers/gpu/drm/bridge/Kconfig
>> +++ b/drivers/gpu/drm/bridge/Kconfig
>> @@ -110,6 +110,14 @@ config DRM_THINE_THC63LVD1024
>> ---help---
>> Thine THC63LVD1024 LVDS/parallel converter driver.
>>
>> +config DRM_TOSHIBA_TC358764
>> + tristate "TC358764 DSI/LVDS bridge"
>> + depends on DRM && DRM_PANEL
>> + depends on OF
>> + select DRM_MIPI_DSI
>> + help
>> + Toshiba TC358764 DSI/LVDS bridge driver.
>> +
>> config DRM_TOSHIBA_TC358767
>> tristate "Toshiba TC358767 eDP bridge"
>> depends on OF
>> diff --git a/drivers/gpu/drm/bridge/Makefile
>> b/drivers/gpu/drm/bridge/Makefile
>> index 35f88d48ec20..bf7c0cecf227 100644
>> --- a/drivers/gpu/drm/bridge/Makefile
>> +++ b/drivers/gpu/drm/bridge/Makefile
>> @@ -10,6 +10,7 @@ obj-$(CONFIG_DRM_SIL_SII8620) += sil-sii8620.o
>> obj-$(CONFIG_DRM_SII902X) += sii902x.o
>> obj-$(CONFIG_DRM_SII9234) += sii9234.o
>> obj-$(CONFIG_DRM_THINE_THC63LVD1024) += thc63lvd1024.o
>> +obj-$(CONFIG_DRM_TOSHIBA_TC358764) += tc358764.o
>> obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o
>> obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
>> obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/
>> diff --git a/drivers/gpu/drm/bridge/tc358764.c
>> b/drivers/gpu/drm/bridge/tc358764.c
>> new file mode 100644
>> index 000000000000..779bc5fce22a
>> --- /dev/null
>> +++ b/drivers/gpu/drm/bridge/tc358764.c
>> @@ -0,0 +1,499 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Copyright (C) 2018 Samsung Electronics Co., Ltd
>> + *
>> + * Authors:
>> + * Andrzej Hajda <a.ha...@samsung.com>
>> + * Maciej Purski <m.pur...@samsung.com>
>> + */
>> +
>> +#include <drm/drm_atomic_helper.h>
>> +#include <drm/drm_crtc.h>
>> +#include <drm/drm_crtc_helper.h>
>> +#include <drm/drm_fb_helper.h>
>> +#include <drm/drm_mipi_dsi.h>
>> +#include <drm/drm_of.h>
>> +#include <drm/drm_panel.h>
>> +#include <drm/drmP.h>
>> +#include <linux/gpio/consumer.h>
>> +#include <linux/of_graph.h>
>> +#include <linux/regulator/consumer.h>
>> +#include <video/mipi_display.h>
>> +
>> +#define FLD_MASK(start, end) (((1 << ((start) - (end) + 1)) - 1) <<
>> (end))
>> +#define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
>> +
>> +/* PPI layer registers */
>> +#define PPI_STARTPPI 0x0104 /* START control bit */
>> +#define PPI_LPTXTIMECNT 0x0114 /* LPTX timing signal */
>> +#define PPI_LANEENABLE 0x0134 /* Enables each lane */
>> +#define PPI_TX_RX_TA 0x013C /* BTA timing parameters */
>> +#define PPI_D0S_CLRSIPOCOUNT 0x0164 /* Assertion timer for Lane 0 */
>> +#define PPI_D1S_CLRSIPOCOUNT 0x0168 /* Assertion timer for Lane 1 */
>> +#define PPI_D2S_CLRSIPOCOUNT 0x016C /* Assertion timer for Lane 2 */
>> +#define PPI_D3S_CLRSIPOCOUNT 0x0170 /* Assertion timer for Lane 3 */
>> +#define PPI_START_FUNCTION 1
>> +
>> +/* DSI layer registers */
>> +#define DSI_STARTDSI 0x0204 /* START control bit of DSI-TX */
>> +#define DSI_LANEENABLE 0x0210 /* Enables each lane */
>> +#define DSI_RX_START 1
>> +
>> +/* Video path registers */
>> +#define VP_CTRL 0x0450 /* Video Path Control */
>> +#define VP_CTRL_MSF(v) FLD_VAL(v, 0, 0) /* Magic square in
>> RGB666 */
>> +#define VP_CTRL_VTGEN(v) FLD_VAL(v, 4, 4) /* Use chip clock for timing */
>> +#define VP_CTRL_EVTMODE(v) FLD_VAL(v, 5, 5) /* Event mode */
>> +#define VP_CTRL_RGB888(v) FLD_VAL(v, 8, 8) /* RGB888 mode */
>> +#define VP_CTRL_VSDELAY(v) FLD_VAL(v, 31, 20) /* VSYNC delay */
>> +#define VP_CTRL_HSPOL BIT(17) /* Polarity of HSYNC signal */
>> +#define VP_CTRL_DEPOL BIT(18) /* Polarity of DE signal */
>> +#define VP_CTRL_VSPOL BIT(19) /* Polarity of VSYNC signal */
>> +#define VP_HTIM1 0x0454 /* Horizontal Timing Control 1 */
>> +#define VP_HTIM1_HBP(v) FLD_VAL(v, 24, 16)
>> +#define VP_HTIM1_HSYNC(v) FLD_VAL(v, 8, 0)
>> +#define VP_HTIM2 0x0458 /* Horizontal Timing Control 2 */
>> +#define VP_HTIM2_HFP(v) FLD_VAL(v, 24, 16)
>> +#define VP_HTIM2_HACT(v) FLD_VAL(v, 10, 0)
>> +#define VP_VTIM1 0x045C /* Vertical Timing Control 1 */
>> +#define VP_VTIM1_VBP(v) FLD_VAL(v, 23, 16)
>> +#define VP_VTIM1_VSYNC(v) FLD_VAL(v, 7, 0)
>> +#define VP_VTIM2 0x0460 /* Vertical Timing Control 2 */
>> +#define VP_VTIM2_VFP(v) FLD_VAL(v, 23, 16)
>> +#define VP_VTIM2_VACT(v) FLD_VAL(v, 10, 0)
>> +#define VP_VFUEN 0x0464 /* Video Frame Timing Update Enable */
>> +
>> +/* LVDS registers */
>> +#define LV_MX0003 0x0480 /* Mux input bit 0 to 3 */
>> +#define LV_MX0407 0x0484 /* Mux input bit 4 to 7 */
>> +#define LV_MX0811 0x0488 /* Mux input bit 8 to 11 */
>> +#define LV_MX1215 0x048C /* Mux input bit 12 to 15 */
>> +#define LV_MX1619 0x0490 /* Mux input bit 16 to 19 */
>> +#define LV_MX2023 0x0494 /* Mux input bit 20 to 23 */
>> +#define LV_MX2427 0x0498 /* Mux input bit 24 to 27 */
>> +#define LV_MX(b0, b1, b2, b3) (FLD_VAL(b0, 4, 0) | FLD_VAL(b1, 12, 8)
>> | \
>> + FLD_VAL(b2, 20, 16) | FLD_VAL(b3, 28, 24))
>> +
>> +/* Input bit numbers used in mux registers */
>> +enum {
>> + LVI_R0,
>> + LVI_R1,
>> + LVI_R2,
>> + LVI_R3,
>> + LVI_R4,
>> + LVI_R5,
>> + LVI_R6,
>> + LVI_R7,
>> + LVI_G0,
>> + LVI_G1,
>> + LVI_G2,
>> + LVI_G3,
>> + LVI_G4,
>> + LVI_G5,
>> + LVI_G6,
>> + LVI_G7,
>> + LVI_B0,
>> + LVI_B1,
>> + LVI_B2,
>> + LVI_B3,
>> + LVI_B4,
>> + LVI_B5,
>> + LVI_B6,
>> + LVI_B7,
>> + LVI_HS,
>> + LVI_VS,
>> + LVI_DE,
>> + LVI_L0
>> +};
>> +
>> +#define LV_CFG 0x049C /* LVDS Configuration */
>> +#define LV_PHY0 0x04A0 /* LVDS PHY 0 */
>> +#define LV_PHY0_RST(v) FLD_VAL(v, 22, 22) /* PHY reset */
>> +#define LV_PHY0_IS(v) FLD_VAL(v, 15, 14)
>> +#define LV_PHY0_ND(v) FLD_VAL(v, 4, 0) /* Frequency range
>> select */
>> +#define LV_PHY0_PRBS_ON(v) FLD_VAL(v, 20, 16) /* Clock/Data Flag pins */
>> +
>> +/* System registers */
>> +#define SYS_RST 0x0504 /* System Reset */
>> +#define SYS_ID 0x0580 /* System ID */
>> +
>> +#define SYS_RST_I2CS BIT(0) /* Reset I2C-Slave controller */
>> +#define SYS_RST_I2CM BIT(1) /* Reset I2C-Master controller */
>> +#define SYS_RST_LCD BIT(2) /* Reset LCD controller */
>> +#define SYS_RST_BM BIT(3) /* Reset Bus Management controller */
>> +#define SYS_RST_DSIRX BIT(4) /* Reset DSI-RX and App
>> controller */
>> +#define SYS_RST_REG BIT(5) /* Reset Register module */
>> +
>> +#define LPX_PERIOD 2
>> +#define TTA_SURE 3
>> +#define TTA_GET 0x20000
>> +
>> +/* Lane enable PPI and DSI register bits */
>> +#define LANEENABLE_CLEN BIT(0)
>> +#define LANEENABLE_L0EN BIT(1)
>> +#define LANEENABLE_L1EN BIT(2)
>> +#define LANEENABLE_L2EN BIT(3)
>> +#define LANEENABLE_L3EN BIT(4)
>> +
>> +/* LVCFG fields */
>> +#define LV_CFG_LVEN BIT(0)
>> +#define LV_CFG_LVDLINK BIT(1)
>> +#define LV_CFG_CLKPOL1 BIT(2)
>> +#define LV_CFG_CLKPOL2 BIT(3)
>> +
>> +static const char * const tc358764_supplies[] = {
>> + "vddc", "vddio", "vddlvds"
>> +};
>> +
>> +struct tc358764 {
>> + struct device *dev;
>> + struct drm_bridge bridge;
>> + struct drm_connector connector;
>> + struct regulator_bulk_data supplies[ARRAY_SIZE(tc358764_supplies)];
>> + struct gpio_desc *gpio_reset;
>> + struct drm_panel *panel;
>> + int error;
>> +};
>> +
>> +static int tc358764_clear_error(struct tc358764 *ctx)
>> +{
>> + int ret = ctx->error;
>> +
>> + ctx->error = 0;
>> + return ret;
>> +}
>> +
>> +static void tc358764_read(struct tc358764 *ctx, u16 addr, u32 *val)
>> +{
>> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
>> + ssize_t ret;
>> +
>> + if (ctx->error)
>> + return;
>> +
>> + cpu_to_le16s(&addr);
>> + ret = mipi_dsi_generic_read(dsi, &addr, sizeof(addr), val,
>> sizeof(*val));
>> + if (ret >= 0)
>> + le32_to_cpus(val);
>> +
>> + dev_dbg(ctx->dev, "read: %d, addr: %d\n", addr, *val);
>> +}
>> +
>> +static void tc358764_write(struct tc358764 *ctx, u16 addr, u32 val)
>> +{
>> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
>> + ssize_t ret;
>> + u8 data[6];
>> +
>> + if (ctx->error)
>> + return;
>> +
>> + data[0] = addr;
>> + data[1] = addr >> 8;
>> + data[2] = val;
>> + data[3] = val >> 8;
>> + data[4] = val >> 16;
>> + data[5] = val >> 24;
>> +
>> + ret = mipi_dsi_generic_write(dsi, data, sizeof(data));
>> + if (ret < 0)
>> + ctx->error = ret;
>> +}
>> +
>> +static inline struct tc358764 *bridge_to_tc358764(struct drm_bridge *bridge)
>> +{
>> + return container_of(bridge, struct tc358764, bridge);
>> +}
>> +
>> +static inline
>> +struct tc358764 *connector_to_tc358764(struct drm_connector *connector)
>> +{
>> + return container_of(connector, struct tc358764, connector);
>> +}
>> +
>> +static int tc358764_init(struct tc358764 *ctx)
>> +{
>> + u32 v = 0;
>> +
>> + tc358764_read(ctx, SYS_ID, &v);
>> + if (ctx->error)
>> + return tc358764_clear_error(ctx);
>> + dev_info(ctx->dev, "ID: %#x\n", v);
>> +
>> + /* configure PPI counters */
>> + tc358764_write(ctx, PPI_TX_RX_TA, TTA_GET | TTA_SURE);
>> + tc358764_write(ctx, PPI_LPTXTIMECNT, LPX_PERIOD);
>> + tc358764_write(ctx, PPI_D0S_CLRSIPOCOUNT, 5);
>> + tc358764_write(ctx, PPI_D1S_CLRSIPOCOUNT, 5);
>> + tc358764_write(ctx, PPI_D2S_CLRSIPOCOUNT, 5);
>> + tc358764_write(ctx, PPI_D3S_CLRSIPOCOUNT, 5);
>> +
>> + /* enable four data lanes and clock lane */
>> + tc358764_write(ctx, PPI_LANEENABLE, LANEENABLE_L3EN | LANEENABLE_L2EN |
>> + LANEENABLE_L1EN | LANEENABLE_L0EN | LANEENABLE_CLEN);
>> + tc358764_write(ctx, DSI_LANEENABLE, LANEENABLE_L3EN | LANEENABLE_L2EN |
>> + LANEENABLE_L1EN | LANEENABLE_L0EN | LANEENABLE_CLEN);
>> +
>> + /* start */
>> + tc358764_write(ctx, PPI_STARTPPI, PPI_START_FUNCTION);
>> + tc358764_write(ctx, DSI_STARTDSI, DSI_RX_START);
>> +
>> + /* configure video path */
>> + tc358764_write(ctx, VP_CTRL, VP_CTRL_VSDELAY(15) | VP_CTRL_RGB888(1) |
>> + VP_CTRL_EVTMODE(1) | VP_CTRL_HSPOL | VP_CTRL_VSPOL);
>> +
>> + /* reset PHY */
>> + tc358764_write(ctx, LV_PHY0, LV_PHY0_RST(1) |
>> + LV_PHY0_PRBS_ON(4) | LV_PHY0_IS(2) | LV_PHY0_ND(6));
>> + tc358764_write(ctx, LV_PHY0, LV_PHY0_PRBS_ON(4) | LV_PHY0_IS(2) |
>> + LV_PHY0_ND(6));
>> +
>> + /* reset bridge */
>> + tc358764_write(ctx, SYS_RST, SYS_RST_LCD);
>> +
>> + /* set bit order */
>> + tc358764_write(ctx, LV_MX0003, LV_MX(LVI_R0, LVI_R1, LVI_R2, LVI_R3));
>> + tc358764_write(ctx, LV_MX0407, LV_MX(LVI_R4, LVI_R7, LVI_R5, LVI_G0));
>> + tc358764_write(ctx, LV_MX0811, LV_MX(LVI_G1, LVI_G2, LVI_G6, LVI_G7));
>> + tc358764_write(ctx, LV_MX1215, LV_MX(LVI_G3, LVI_G4, LVI_G5, LVI_B0));
>> + tc358764_write(ctx, LV_MX1619, LV_MX(LVI_B6, LVI_B7, LVI_B1, LVI_B2));
>> + tc358764_write(ctx, LV_MX2023, LV_MX(LVI_B3, LVI_B4, LVI_B5, LVI_L0));
>> + tc358764_write(ctx, LV_MX2427, LV_MX(LVI_HS, LVI_VS, LVI_DE, LVI_R6));
>> + tc358764_write(ctx, LV_CFG, LV_CFG_CLKPOL2 | LV_CFG_CLKPOL1 |
>> + LV_CFG_LVEN);
>> +
>> + return tc358764_clear_error(ctx);
>> +}
>> +
>> +static void tc358764_reset(struct tc358764 *ctx)
>> +{
>> + gpiod_set_value(ctx->gpio_reset, 1);
>> + usleep_range(1000, 2000);
>> + gpiod_set_value(ctx->gpio_reset, 0);
>> + usleep_range(1000, 2000);
>> +}
>> +
>> +static int tc358764_get_modes(struct drm_connector *connector)
>> +{
>> + struct tc358764 *ctx = connector_to_tc358764(connector);
>> +
>> + return drm_panel_get_modes(ctx->panel);
>> +}
>> +
>> +static const
>> +struct drm_connector_helper_funcs tc358764_connector_helper_funcs = {
>> + .get_modes = tc358764_get_modes,
>> +};
>> +
>> +static const struct drm_connector_funcs tc358764_connector_funcs = {
>> + .fill_modes = drm_helper_probe_single_connector_modes,
>> + .destroy = drm_connector_cleanup,
>> + .reset = drm_atomic_helper_connector_reset,
>> + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>> + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>> +};
>> +
>> +static void tc358764_disable(struct drm_bridge *bridge)
>> +{
>> + struct tc358764 *ctx = bridge_to_tc358764(bridge);
>> + int ret = drm_panel_disable(bridge_to_tc358764(bridge)->panel);
>> +
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error disabling panel (%d)\n", ret);
>> +}
>> +
>> +static void tc358764_post_disable(struct drm_bridge *bridge)
>> +{
>> + struct tc358764 *ctx = bridge_to_tc358764(bridge);
>> + int ret;
>> +
>> + ret = drm_panel_unprepare(ctx->panel);
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error unpreparing panel (%d)\n", ret);
>> + tc358764_reset(ctx);
>> + usleep_range(10000, 15000);
>> + ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error disabling regulators (%d)\n", ret);
>> +}
>> +
>> +static void tc358764_pre_enable(struct drm_bridge *bridge)
>> +{
>> + struct tc358764 *ctx = bridge_to_tc358764(bridge);
>> + int ret;
>> +
>> + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error enabling regulators (%d)\n", ret);
>> + usleep_range(10000, 15000);
>> + tc358764_reset(ctx);
>> + ret = tc358764_init(ctx);
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error initializing bridge (%d)\n", ret);
>> + ret = drm_panel_prepare(ctx->panel);
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error preparing panel (%d)\n", ret);
>> +}
>> +
>> +static void tc358764_enable(struct drm_bridge *bridge)
>> +{
>> + struct tc358764 *ctx = bridge_to_tc358764(bridge);
>> + int ret = drm_panel_enable(ctx->panel);
>> +
>> + if (ret < 0)
>> + dev_err(ctx->dev, "error enabling panel (%d)\n", ret);
>> +}
>> +
>> +static int tc358764_attach(struct drm_bridge *bridge)
>> +{
>> + struct tc358764 *ctx = bridge_to_tc358764(bridge);
>> + struct drm_device *drm = bridge->dev;
>> + int ret;
>> +
>> + ctx->connector.polled = DRM_CONNECTOR_POLL_HPD;
>> + ret = drm_connector_init(drm, &ctx->connector,
>> + &tc358764_connector_funcs,
>> + DRM_MODE_CONNECTOR_LVDS);
>> + if (ret) {
>> + DRM_ERROR("Failed to initialize connector\n");
>> + return ret;
>> + }
>> +
>> + drm_connector_helper_add(&ctx->connector,
>> + &tc358764_connector_helper_funcs);
>> + drm_mode_connector_attach_encoder(&ctx->connector, bridge->encoder);
>> + drm_panel_attach(ctx->panel, &ctx->connector);
>> + ctx->connector.funcs->reset(&ctx->connector);
>> + drm_fb_helper_add_one_connector(drm->fb_helper, &ctx->connector);
>> + drm_connector_register(&ctx->connector);
> Aren't drm_connector_register()/unregister calls managed by the drm
> core?
drm core registers connectors during initialization but tc358764_attach
can be called after bridge probe, also after drm initialization, in such
case connector should be dynamically allocated/de-allocated.
> Otherwise:
> Reviewed-by: Archit Taneja <arch...@codeaurora.org>
Thanks for the review, queued to drm-misc-next.
Regards
Andrzej
>
> Thanks,
> Archit
>
>> +
>> + return 0;
>> +}
>> +
>> +static void tc358764_detach(struct drm_bridge *bridge)
>> +{
>> + struct tc358764 *ctx = bridge_to_tc358764(bridge);
>> + struct drm_device *drm = bridge->dev;
>> +
>> + drm_connector_unregister(&ctx->connector);
>> + drm_fb_helper_remove_one_connector(drm->fb_helper, &ctx->connector);
>> + drm_panel_detach(ctx->panel);
>> + ctx->panel = NULL;
>> + drm_connector_unreference(&ctx->connector);
>> +}
>> +
>> +static const struct drm_bridge_funcs tc358764_bridge_funcs = {
>> + .disable = tc358764_disable,
>> + .post_disable = tc358764_post_disable,
>> + .enable = tc358764_enable,
>> + .pre_enable = tc358764_pre_enable,
>> + .attach = tc358764_attach,
>> + .detach = tc358764_detach,
>> +};
>> +
>> +static int tc358764_parse_dt(struct tc358764 *ctx)
>> +{
>> + struct device *dev = ctx->dev;
>> + int ret;
>> +
>> + ctx->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
>> + if (IS_ERR(ctx->gpio_reset)) {
>> + dev_err(dev, "no reset GPIO pin provided\n");
>> + return PTR_ERR(ctx->gpio_reset);
>> + }
>> +
>> + ret = drm_of_find_panel_or_bridge(ctx->dev->of_node, 1, 0, &ctx->panel,
>> + NULL);
>> + if (ret && ret != -EPROBE_DEFER)
>> + dev_err(dev, "cannot find panel (%d)\n", ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int tc358764_configure_regulators(struct tc358764 *ctx)
>> +{
>> + int i, ret;
>> +
>> + for (i = 0; i < ARRAY_SIZE(ctx->supplies); ++i)
>> + ctx->supplies[i].supply = tc358764_supplies[i];
>> +
>> + ret = devm_regulator_bulk_get(ctx->dev, ARRAY_SIZE(ctx->supplies),
>> + ctx->supplies);
>> + if (ret < 0)
>> + dev_err(ctx->dev, "failed to get regulators: %d\n", ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int tc358764_probe(struct mipi_dsi_device *dsi)
>> +{
>> + struct device *dev = &dsi->dev;
>> + struct tc358764 *ctx;
>> + int ret;
>> +
>> + ctx = devm_kzalloc(dev, sizeof(struct tc358764), GFP_KERNEL);
>> + if (!ctx)
>> + return -ENOMEM;
>> +
>> + mipi_dsi_set_drvdata(dsi, ctx);
>> +
>> + ctx->dev = dev;
>> +
>> + dsi->lanes = 4;
>> + dsi->format = MIPI_DSI_FMT_RGB888;
>> + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST
>> + | MIPI_DSI_MODE_VIDEO_AUTO_VERT | MIPI_DSI_MODE_LPM;
>> +
>> + ret = tc358764_parse_dt(ctx);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret = tc358764_configure_regulators(ctx);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ctx->bridge.funcs = &tc358764_bridge_funcs;
>> + ctx->bridge.of_node = dev->of_node;
>> +
>> + drm_bridge_add(&ctx->bridge);
>> +
>> + ret = mipi_dsi_attach(dsi);
>> + if (ret < 0) {
>> + drm_bridge_remove(&ctx->bridge);
>> + dev_err(dev, "failed to attach dsi\n");
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +static int tc358764_remove(struct mipi_dsi_device *dsi)
>> +{
>> + struct tc358764 *ctx = mipi_dsi_get_drvdata(dsi);
>> +
>> + mipi_dsi_detach(dsi);
>> + drm_bridge_remove(&ctx->bridge);
>> +
>> + return 0;
>> +}
>> +
>> +static const struct of_device_id tc358764_of_match[] = {
>> + { .compatible = "toshiba,tc358764" },
>> + { }
>> +};
>> +MODULE_DEVICE_TABLE(of, tc358764_of_match);
>> +
>> +static struct mipi_dsi_driver tc358764_driver = {
>> + .probe = tc358764_probe,
>> + .remove = tc358764_remove,
>> + .driver = {
>> + .name = "tc358764",
>> + .owner = THIS_MODULE,
>> + .of_match_table = tc358764_of_match,
>> + },
>> +};
>> +module_mipi_dsi_driver(tc358764_driver);
>> +
>> +MODULE_AUTHOR("Andrzej Hajda <a.ha...@samsung.com>");
>> +MODULE_AUTHOR("Maciej Purski <m.pur...@samsung.com>");
>> +MODULE_DESCRIPTION("MIPI-DSI based Driver for TC358764 DSI/LVDS Bridge");
>> +MODULE_LICENSE("GPL v2");
>>
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