On Fri, 3 Jun 2022 at 16:04, Jagan Teki jagan@amarulasolutions.com wrote:
TI DLPC3433 is a MIPI DSI based display controller bridge for processing high resolution DMD based projectors.
It has a flexible configuration of MIPI DSI and DPI signal input that produces a DMD output in RGB565, RGB666, RGB888 formats.
It supports upto 720p resolution with 60 and 120 Hz refresh rates.
Add bridge driver for it.
Signed-off-by: Christopher Vollo chris@renewoutreach.org Signed-off-by: Jagan Teki jagan@amarulasolutions.com
Changes for v3:
- none
Changes for v2:
- fixed license
- filled display size buffer
- fixed power off
- fixed dev_err_probe
MAINTAINERS | 1 + drivers/gpu/drm/bridge/Kconfig | 16 + drivers/gpu/drm/bridge/Makefile | 1 + drivers/gpu/drm/bridge/ti-dlpc3433.c | 417 +++++++++++++++++++++++++++ 4 files changed, 435 insertions(+) create mode 100644 drivers/gpu/drm/bridge/ti-dlpc3433.c
diff --git a/MAINTAINERS b/MAINTAINERS index aea0fe5156af..ede21cc48708 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6435,6 +6435,7 @@ DRM DRIVER FOR TI DLPC3433 MIPI DSI TO DMD BRIDGE M: Jagan Teki jagan@amarulasolutions.com S: Maintained F: Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml +F: drivers/gpu/drm/bridge/ti-dlpc3433.c
DRM DRIVER FOR TI SN65DSI86 BRIDGE CHIP R: Douglas Anderson dianders@chromium.org diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 146ab069838f..4b28f939fff6 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -321,6 +321,22 @@ config DRM_TOSHIBA_TC358775 help Toshiba TC358775 DSI/LVDS bridge chip driver.
+config DRM_TI_DLPC3433
tristate "TI DLPC3433 Display controller"depends on DRM && DRM_PANELdepends on OFselect DRM_MIPI_DSIhelpTI DLPC3433 is a MIPI DSI based display controller bridgefor processing high resolution DMD based projectors.It has a flexible configuration of MIPI DSI and DPI signalinput that produces a DMD output in RGB565, RGB666, RGB888formats.It supports upto 720p resolution with 60 and 120 Hz refreshrates.config DRM_TI_TFP410 tristate "TI TFP410 DVI/HDMI bridge" depends on OF diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile index f6c0a95de549..043b499545e3 100644 --- a/drivers/gpu/drm/bridge/Makefile +++ b/drivers/gpu/drm/bridge/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_DRM_TOSHIBA_TC358767) += tc358767.o obj-$(CONFIG_DRM_TOSHIBA_TC358768) += tc358768.o obj-$(CONFIG_DRM_TOSHIBA_TC358775) += tc358775.o obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511/ +obj-$(CONFIG_DRM_TI_DLPC3433) += ti-dlpc3433.o obj-$(CONFIG_DRM_TI_SN65DSI83) += ti-sn65dsi83.o obj-$(CONFIG_DRM_TI_SN65DSI86) += ti-sn65dsi86.o obj-$(CONFIG_DRM_TI_TFP410) += ti-tfp410.o diff --git a/drivers/gpu/drm/bridge/ti-dlpc3433.c b/drivers/gpu/drm/bridge/ti-dlpc3433.c new file mode 100644 index 000000000000..06e519798ac5 --- /dev/null +++ b/drivers/gpu/drm/bridge/ti-dlpc3433.c @@ -0,0 +1,417 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*
- Copyright (C) 2021 RenewOutReach
- Copyright (C) 2021 Amarula Solutions(India)
- Author:
- Jagan Teki jagan@amarulasolutions.com
- Christopher Vollo chris@renewoutreach.org
- */
+#include <drm/drm_atomic_helper.h> +#include <drm/drm_of.h> +#include <drm/drm_print.h> +#include <drm/drm_mipi_dsi.h>
+#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h>
+enum cmd_registers {
WR_INPUT_SOURCE = 0x05, /* Write Input Source Select */WR_EXT_SOURCE_FMT = 0x07, /* Write External Video Source Format */WR_IMAGE_CROP = 0x10, /* Write Image Crop */WR_DISPLAY_SIZE = 0x12, /* Write Display Size */WR_IMAGE_FREEZE = 0x1A, /* Write Image Freeze */WR_INPUT_IMAGE_SIZE = 0x2E, /* Write External Input Image Size */WR_RGB_LED_EN = 0x52, /* Write RGB LED Enable */WR_RGB_LED_CURRENT = 0x54, /* Write RGB LED Current */WR_RGB_LED_MAX_CURRENT = 0x5C, /* Write RGB LED Max Current */WR_DSI_HS_CLK = 0xBD, /* Write DSI HS Clock */RD_DEVICE_ID = 0xD4, /* Read Controller Device ID */WR_DSI_PORT_EN = 0xD7, /* Write DSI Port Enable */+};
+enum input_source {
INPUT_EXTERNAL_VIDEO = 0,INPUT_TEST_PATTERN,INPUT_SPLASH_SCREEN,+};
+#define DEV_ID_MASK GENMASK(3, 0) +#define IMAGE_FREESE_EN BIT(0) +#define DSI_PORT_EN 0 +#define EXT_SOURCE_FMT_DSI 0 +#define RED_LED_EN BIT(0) +#define GREEN_LED_EN BIT(1) +#define BLUE_LED_EN BIT(2) +#define LED_MASK GENMASK(2, 0) +#define MAX_BYTE_SIZE 8
+struct dlpc {
struct device *dev;struct drm_bridge bridge;struct drm_bridge *next_bridge;struct device_node *host_node;struct mipi_dsi_device *dsi;struct drm_display_mode mode;struct gpio_desc *enable_gpio;struct regulator *vcc_intf;struct regulator *vcc_flsh;struct regmap *regmap;unsigned int dsi_lanes;+};
+static inline struct dlpc *bridge_to_dlpc(struct drm_bridge *bridge) +{
return container_of(bridge, struct dlpc, bridge);+}
+static bool dlpc_writeable_noinc_reg(struct device *dev, unsigned int reg) +{
switch (reg) {case WR_IMAGE_CROP:case WR_DISPLAY_SIZE:case WR_INPUT_IMAGE_SIZE:case WR_DSI_HS_CLK:return true;default:return false;}+}
+static const struct regmap_range dlpc_volatile_ranges[] = {
{ .range_min = 0x10, .range_max = 0xBF },+};
+static const struct regmap_access_table dlpc_volatile_table = {
.yes_ranges = dlpc_volatile_ranges,.n_yes_ranges = ARRAY_SIZE(dlpc_volatile_ranges),+};
+static struct regmap_config dlpc_regmap_config = {
.reg_bits = 8,.val_bits = 8,.max_register = WR_DSI_PORT_EN,.writeable_noinc_reg = dlpc_writeable_noinc_reg,.volatile_table = &dlpc_volatile_table,.cache_type = REGCACHE_RBTREE,.name = "dlpc3433",+};
+static void dlpc_atomic_enable(struct drm_bridge *bridge,
struct drm_bridge_state *old_bridge_state)+{
struct dlpc *dlpc = bridge_to_dlpc(bridge);struct device *dev = dlpc->dev;struct drm_display_mode *mode = &dlpc->mode;struct regmap *regmap = dlpc->regmap;char buf[MAX_BYTE_SIZE];unsigned int devid;regmap_read(regmap, RD_DEVICE_ID, &devid);devid &= DEV_ID_MASK;DRM_DEV_DEBUG(dev, "DLPC3433 device id: 0x%02x\n", devid);if (devid != 0x01) {DRM_DEV_ERROR(dev, "Unsupported DLPC device id: 0x%02x\n", devid);return;}/* disable image freeze */regmap_write(regmap, WR_IMAGE_FREEZE, IMAGE_FREESE_EN);/* enable DSI port */regmap_write(regmap, WR_DSI_PORT_EN, DSI_PORT_EN);memset(buf, 0, MAX_BYTE_SIZE);/* set image crop */buf[4] = mode->hdisplay & 0xff;buf[5] = (mode->hdisplay & 0xff00) >> 8;buf[6] = mode->vdisplay & 0xff;buf[7] = (mode->vdisplay & 0xff00) >> 8;regmap_noinc_write(regmap, WR_IMAGE_CROP, buf, MAX_BYTE_SIZE);/* set display size */buf[4] = mode->hdisplay & 0xff;buf[5] = (mode->hdisplay & 0xff00) >> 8;buf[6] = mode->vdisplay & 0xff;buf[7] = (mode->vdisplay & 0xff00) >> 8;regmap_noinc_write(regmap, WR_DISPLAY_SIZE, buf, MAX_BYTE_SIZE);/* set input image size */buf[0] = mode->hdisplay & 0xff;buf[1] = (mode->hdisplay & 0xff00) >> 8;buf[2] = mode->vdisplay & 0xff;buf[3] = (mode->vdisplay & 0xff00) >> 8;regmap_noinc_write(regmap, WR_INPUT_IMAGE_SIZE, buf, 4);/* set external video port */regmap_write(regmap, WR_INPUT_SOURCE, INPUT_EXTERNAL_VIDEO);/* set external video format select as DSI */regmap_write(regmap, WR_EXT_SOURCE_FMT, EXT_SOURCE_FMT_DSI);/* disable image freeze */regmap_write(regmap, WR_IMAGE_FREEZE, 0x00);/* enable RGB led */regmap_update_bits(regmap, WR_RGB_LED_EN, LED_MASK,RED_LED_EN | GREEN_LED_EN | BLUE_LED_EN);msleep(10);+}
+static void dlpc_atomic_pre_enable(struct drm_bridge *bridge,
struct drm_bridge_state *old_bridge_state)+{
struct dlpc *dlpc = bridge_to_dlpc(bridge);int ret;gpiod_set_value(dlpc->enable_gpio, 1);msleep(500);ret = regulator_enable(dlpc->vcc_intf);if (ret)DRM_DEV_ERROR(dlpc->dev,"failed to enable VCC_INTF regulator: %d\n", ret);ret = regulator_enable(dlpc->vcc_flsh);if (ret)DRM_DEV_ERROR(dlpc->dev,"failed to enable VCC_FLSH regulator: %d\n", ret);msleep(10);+}
+static void dlpc_atomic_post_disable(struct drm_bridge *bridge,
struct drm_bridge_state *old_bridge_state)+{
struct dlpc *dlpc = bridge_to_dlpc(bridge);regulator_disable(dlpc->vcc_flsh);regulator_disable(dlpc->vcc_intf);msleep(10);gpiod_set_value(dlpc->enable_gpio, 0);msleep(500);+}
+#define MAX_INPUT_SEL_FORMATS 1
+static u32 * +dlpc_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
struct drm_bridge_state *bridge_state,struct drm_crtc_state *crtc_state,struct drm_connector_state *conn_state,u32 output_fmt,unsigned int *num_input_fmts)+{
u32 *input_fmts;*num_input_fmts = 0;input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),GFP_KERNEL);if (!input_fmts)return NULL;/* This is the DSI-end bus format */input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;*num_input_fmts = 1;return input_fmts;+}
+static void dlpc_mode_set(struct drm_bridge *bridge,
const struct drm_display_mode *mode,const struct drm_display_mode *adjusted_mode)+{
struct dlpc *dlpc = bridge_to_dlpc(bridge);drm_mode_copy(&dlpc->mode, adjusted_mode);+}
+static int dlpc_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)+{
struct dlpc *dlpc = bridge_to_dlpc(bridge);return drm_bridge_attach(bridge->encoder, dlpc->next_bridge, bridge, flags);+}
+static const struct drm_bridge_funcs dlpc_bridge_funcs = {
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,.atomic_get_input_bus_fmts = dlpc_atomic_get_input_bus_fmts,.atomic_reset = drm_atomic_helper_bridge_reset,.atomic_pre_enable = dlpc_atomic_pre_enable,.atomic_enable = dlpc_atomic_enable,.atomic_post_disable = dlpc_atomic_post_disable,.mode_set = dlpc_mode_set,.attach = dlpc_attach,+};
+static int dlpc3433_parse_dt(struct dlpc *dlpc) +{
struct device *dev = dlpc->dev;struct device_node *endpoint;int ret;dlpc->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);if (IS_ERR(dlpc->enable_gpio))return PTR_ERR(dlpc->enable_gpio);dlpc->vcc_intf = devm_regulator_get(dlpc->dev, "vcc_intf");if (IS_ERR(dlpc->vcc_intf))return dev_err_probe(dev, PTR_ERR(dlpc->vcc_intf),"failed to get VCC_INTF supply\n");dlpc->vcc_flsh = devm_regulator_get(dlpc->dev, "vcc_flsh");if (IS_ERR(dlpc->vcc_flsh))return dev_err_probe(dev, PTR_ERR(dlpc->vcc_flsh),"failed to get VCC_FLSH supply\n");dlpc->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);if (IS_ERR(dlpc->next_bridge))return PTR_ERR(dlpc->next_bridge);endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0);dlpc->dsi_lanes = of_property_count_u32_elems(endpoint, "data-lanes");if (dlpc->dsi_lanes < 0 || dlpc->dsi_lanes > 4) {ret = -EINVAL;goto err_put_endpoint;}dlpc->host_node = of_graph_get_remote_port_parent(endpoint);if (!dlpc->host_node) {ret = -ENODEV;goto err_put_host;}of_node_put(endpoint);return 0;+err_put_host:
of_node_put(dlpc->host_node);+err_put_endpoint:
of_node_put(endpoint);return ret;+}
+static int dlpc_host_attach(struct dlpc *dlpc) +{
struct device *dev = dlpc->dev;struct mipi_dsi_host *host;struct mipi_dsi_device_info info = {.type = "dlpc3433",.channel = 0,.node = NULL,};host = of_find_mipi_dsi_host_by_node(dlpc->host_node);if (!host) {DRM_DEV_ERROR(dev, "failed to find dsi host\n");return -EPROBE_DEFER;}dlpc->dsi = mipi_dsi_device_register_full(host, &info);if (IS_ERR(dlpc->dsi)) {DRM_DEV_ERROR(dev, "failed to create dsi device\n");return PTR_ERR(dlpc->dsi);}dlpc->dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST;dlpc->dsi->format = MIPI_DSI_FMT_RGB565;dlpc->dsi->lanes = dlpc->dsi_lanes;return devm_mipi_dsi_attach(dev, dlpc->dsi);+}
+static int dlpc3433_probe(struct i2c_client *client) +{
struct device *dev = &client->dev;struct dlpc *dlpc;int ret;dlpc = devm_kzalloc(dev, sizeof(*dlpc), GFP_KERNEL);if (!dlpc)return -ENOMEM;dlpc->dev = dev;dlpc->regmap = devm_regmap_init_i2c(client, &dlpc_regmap_config);if (IS_ERR(dlpc->regmap))return PTR_ERR(dlpc->regmap);ret = dlpc3433_parse_dt(dlpc);if (ret)return ret;dev_set_drvdata(dev, dlpc);i2c_set_clientdata(client, dlpc);dlpc->bridge.funcs = &dlpc_bridge_funcs;dlpc->bridge.of_node = dev->of_node;drm_bridge_add(&dlpc->bridge);ret = dlpc_host_attach(dlpc);if (ret) {DRM_DEV_ERROR(dev, "failed to attach dsi host\n");goto err_remove_bridge;}return 0;+err_remove_bridge:
drm_bridge_remove(&dlpc->bridge);return ret;+}
+static int dlpc3433_remove(struct i2c_client *client) +{
struct dlpc *dlpc = i2c_get_clientdata(client);drm_bridge_remove(&dlpc->bridge);of_node_put(dlpc->host_node);return 0;+}
+static const struct i2c_device_id dlpc3433_id[] = {
{ "ti,dlpc3433", 0 },{ /* sentinel */ }+}; +MODULE_DEVICE_TABLE(i2c, dlpc3433_id);
+static const struct of_device_id dlpc3433_match_table[] = {
{ .compatible = "ti,dlpc3433" },{ /* sentinel */ }+}; +MODULE_DEVICE_TABLE(of, dlpc3433_match_table);
+static struct i2c_driver dlpc3433_driver = {
.probe_new = dlpc3433_probe,.remove = dlpc3433_remove,.id_table = dlpc3433_id,.driver = {.name = "ti-dlpc3433",.of_match_table = dlpc3433_match_table,},+}; +module_i2c_driver(dlpc3433_driver);
+MODULE_AUTHOR("Jagan Teki jagan@amarulasolutions.com"); +MODULE_AUTHOR("Christopher Vollo chris@renewoutreach.org"); +MODULE_DESCRIPTION("TI DLPC3433 MIPI DSI Display Controller Bridge");
+MODULE_LICENSE("GPL");
2.25.1
Applied to drm-misc-next.