diff options
author | Sumit Semwal <sumit.semwal@linaro.org> | 2015-07-29 13:19:33 +0100 |
---|---|---|
committer | Sumit Semwal <sumit.semwal@linaro.org> | 2015-08-08 11:42:45 +0530 |
commit | a5c248baa7835e234281c4ac7d8cac9dd29a7a57 (patch) | |
tree | 894449e5330a7359688587d71eac38ebb8f96ba8 | |
parent | c80e781fa1dc95c426c2e6bfaad71993aec335cb (diff) |
WIP: drm: panel: add JDI WUXGA Panel; command modeflo-DSI-WIP
Only try to enable command mode here.
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
-rw-r--r-- | Documentation/devicetree/bindings/panel/jdi,lt070me05000.txt | 27 | ||||
-rw-r--r-- | arch/arm/boot/dts/qcom-apq8064-ifc6410.dts | 27 | ||||
-rw-r--r-- | drivers/gpu/drm/panel/Kconfig | 8 | ||||
-rw-r--r-- | drivers/gpu/drm/panel/Makefile | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 519 |
5 files changed, 578 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/panel/jdi,lt070me05000.txt b/Documentation/devicetree/bindings/panel/jdi,lt070me05000.txt new file mode 100644 index 000000000000..7551a8a29eab --- /dev/null +++ b/Documentation/devicetree/bindings/panel/jdi,lt070me05000.txt @@ -0,0 +1,27 @@ +JDI model LT070ME05000 1920x1200 7" DSI Panel + +Basic data sheet is at: + http://panelone.net/en/7-0-inch/JDI_LT070ME05000_7.0_inch-datasheet + +This panel has command mode implemented currently in the driver. + +Required properties: +- compatible: should be "jdi,lt070me05000" + +Optional properties: +- power-supply: phandle of the regulator that provides the supply voltage +- reset-gpio: phandle of gpio for reset line +- backlight: phandle of the backlight device attached to the panel + +Example: + + dsi@54300000 { + panel: panel@0 { + compatible = "jdi,lt070me05000"; + reg = <0>; + + power-supply = <...>; + reset-gpio = <...>; + backlight = <...>; + }; + }; diff --git a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts index 5e9cea08145a..0d7d3e7719fc 100644 --- a/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts +++ b/arch/arm/boot/dts/qcom-apq8064-ifc6410.dts @@ -86,15 +86,25 @@ bias-pull-down; }; + pm8921_l11: l11 { + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <3000000>; + bias-pull-down; + }; + pm8921_l23: l23 { regulator-min-microvolt = <1700000>; regulator-max-microvolt = <1900000>; bias-pull-down; }; - pm8921_lvs7: lvs7 { + pm8921_lvs5: lvs5 { bias-pull-down; }; + + pm8921_lvs7: lvs7 { + regulator-boot-on; + }; }; }; @@ -123,10 +133,19 @@ dsi0: qcom,dsi0@4700000 { status = "okay"; - vdd-supply = <&pm8921_l2>;/*VDD_MIPI1 to 4*/ - //vdd-supply = <&pm8921_l8>; - //vddio-supply = <&pm8921_lvs7>;/*dsi_pll_vddio*/ + vdd-supply = <&pm8921_l2>;/* VDD_MIPI1 to 4 */ + vddio-supply = <&pm8921_lvs7>;/*dsi_pll_vddio*/ + vdda-supply = <&pm8921_l11>; /* dsi_avdd */ + + panel@0 { + compatible = "jdi,lt070me05000"; + reset-gpio = <&tlmm_pinmux 54 0>; + + /* TODO: Update backlight stuff */ + power-supply = <&pm8921_lvs5>; + // backlight = <&backlight>; + }; }; mdss_dsi_phy0: qcom,mdss_dsi_phy@4700200 { diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 6d64c7bb908b..fd5f415ddbf3 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -43,4 +43,12 @@ config DRM_PANEL_SHARP_LQ101R1SX01 To compile this driver as a module, choose M here: the module will be called panel-sharp-lq101r1sx01. +config DRM_PANEL_JDI_LT070ME05000 + tristate "JDI LT070ME05000 WUXGA DSI panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for JDI WUXGA DSI command + mode panel as found in Google Nexus 7 (2013) devices. endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 4b2a0430804b..71a9028f1884 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o +obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c new file mode 100644 index 000000000000..a969cac24c1d --- /dev/null +++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c @@ -0,0 +1,519 @@ +/* + * Copyright (C) 2014-2015 InforceComputing + * Author: Vinay Simha BN <vinaysimha@inforcecomputing.com> + * + * Copyright (C) 2015 Linaro Ltd + * Author: Sumit Semwal <sumit.semwal@linaro.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/backlight.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <drm/drmP.h> +#include <drm/drm_crtc.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> + +#include <video/mipi_display.h> + +/* + * From internet archives, the panel for Nexus 7 2nd Gen, 2013 model is a + * JDI model LT070ME05000, and its data sheet is at: + * http://panelone.net/en/7-0-inch/JDI_LT070ME05000_7.0_inch-datasheet + */ +struct jdi_panel { + struct drm_panel base; + struct mipi_dsi_device *dsi; + + /* TODO: Add backilght support */ + struct backlight_device *backlight; + struct regulator *supply; + struct gpio_desc *reset_gpio; + + bool prepared; + bool enabled; + + const struct drm_display_mode *mode; +}; + +static inline struct jdi_panel *to_jdi_panel(struct drm_panel *panel) +{ + return container_of(panel, struct jdi_panel, base); +} + +static char MCAP[2] = {0xB0, 0x00}; +static char interface_setting[6] = {0xB3, 0x04, 0x08, 0x00, 0x22, 0x00}; +static char interface_ID_setting[2] = {0xB4, 0x0C}; +static char DSI_control[3] = {0xB6, 0x3A, 0xD3}; + +/* for fps control, set fps to 60.32Hz */ +static char LTPS_timing_setting[2] = {0xC6, 0x78}; +static char sequencer_timing_control[2] = {0xD6, 0x01}; + +/* set brightness */ +static char write_display_brightness[] = {0x51, 0x00}; +/* enable LEDPWM pin output, turn on LEDPWM output, turn off pwm dimming */ +static char write_control_display[] = {0x53, 0x24}; +/* choose cabc mode, 0x00(-0%), 0x01(-15%), 0x02(-40%), 0x03(-54%), + disable SRE(sunlight readability enhancement) */ +static char write_cabc[] = {0x55, 0x00}; +/* for cabc mode 0x1(-15%) */ +static char backlight_control1[] = {0xB8, 0x07, 0x87, 0x26, 0x18, 0x00, 0x32}; +/* for cabc mode 0x2(-40%) */ +static char backlight_control2[] = {0xB9, 0x07, 0x75, 0x61, 0x20, 0x16, 0x87}; +/* for cabc mode 0x3(-54%) */ +static char backlight_control3[] = {0xBA, 0x07, 0x70, 0x81, 0x20, 0x45, 0xB4}; +/* for pwm frequency and dimming control */ +static char backlight_control4[] = {0xCE, 0x7D, 0x40, 0x48, 0x56, 0x67, 0x78, + 0x88, 0x98, 0xA7, 0xB5, 0xC3, 0xD1, 0xDE, 0xE9, 0xF2, 0xFA, + 0xFF, 0x37, 0xF5, 0x0F, 0x0F, 0x42, 0x00}; + +static char bl_value[2] = {0x51, 0x0}; + +static int jdi_panel_init(struct jdi_panel *jdi) +{ + struct mipi_dsi_device *dsi = jdi->dsi; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_soft_reset(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, MCAP, sizeof(MCAP)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, interface_setting, + sizeof(interface_setting)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, interface_ID_setting, + sizeof(interface_ID_setting)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, DSI_control, sizeof(DSI_control)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, LTPS_timing_setting, + sizeof(LTPS_timing_setting)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, sequencer_timing_control, + sizeof(sequencer_timing_control)); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_write(dsi, write_display_brightness[0], + write_display_brightness[1], 1); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_write(dsi, write_control_display[0], + write_control_display[1], 1); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_write(dsi, write_cabc[0], + write_cabc[1], 1); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, backlight_control1, + sizeof(backlight_control1)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, backlight_control2, + sizeof(backlight_control2)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, backlight_control3, + sizeof(backlight_control3)); + if (ret < 0) + return ret; + + ret = mipi_dsi_generic_write(dsi, backlight_control4, + sizeof(backlight_control4)); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_set_column_address(dsi, 0x00, 0xAF); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_set_page_address(dsi, 0x00, 0x7F); + if (ret < 0) + return ret; + mdelay(20); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) + return ret; + mdelay(5); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) + return ret; + mdelay(5); + + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); + if (ret < 0) + return ret; + mdelay(5); + + return 0; +} + +static int jdi_panel_on(struct jdi_panel *jdi) +{ + struct mipi_dsi_device *dsi = jdi->dsi; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) + return ret; + + msleep(40); + + return 0; +} + +static int jdi_panel_off(struct jdi_panel *jdi) +{ + struct mipi_dsi_device *dsi = jdi->dsi; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_set_tear_off(dsi); + if (ret < 0) + return ret; + + msleep(100); + + return 0; +} + +static int jdi_panel_disable(struct drm_panel *panel) +{ + struct jdi_panel *jdi = to_jdi_panel(panel); + + if (!jdi->enabled) + return 0; + + DRM_DEBUG("disable\n"); + + if (jdi->backlight) { + jdi->backlight->props.power = FB_BLANK_POWERDOWN; + backlight_update_status(jdi->backlight); + } + + jdi->enabled = false; + + return 0; +} + +static int jdi_panel_unprepare(struct drm_panel *panel) +{ + struct jdi_panel *jdi = to_jdi_panel(panel); + int ret; + + if (!jdi->prepared) + return 0; + + DRM_DEBUG("unprepare\n"); + + ret = jdi_panel_off(jdi); + if (ret) { + dev_err(panel->dev, "failed to set panel off: %d\n", ret); + return ret; + } + + regulator_disable(jdi->supply); + if (jdi->reset_gpio) + gpiod_set_value(jdi->reset_gpio, 0); + + jdi->prepared = false; + + return 0; +} + +static int jdi_panel_prepare(struct drm_panel *panel) +{ + struct jdi_panel *jdi = to_jdi_panel(panel); + int ret; + + if (jdi->prepared) + return 0; + + DRM_DEBUG("prepare\n"); + + if (jdi->reset_gpio) { + gpiod_set_value(jdi->reset_gpio, 0); + msleep(5); + } + + ret = regulator_enable(jdi->supply); + if (ret < 0) + return ret; + + msleep(20); + + if (jdi->reset_gpio) { + gpiod_set_value(jdi->reset_gpio, 1); + msleep(10); + } + + msleep(150); + + ret = jdi_panel_init(jdi); + if (ret) { + dev_err(panel->dev, "failed to init panel: %d\n", ret); + goto poweroff; + } + + ret = jdi_panel_on(jdi); + if (ret) { + dev_err(panel->dev, "failed to set panel on: %d\n", ret); + goto poweroff; + } + + jdi->prepared = true; + + return 0; + +poweroff: + regulator_disable(jdi->supply); + if (jdi->reset_gpio) + gpiod_set_value(jdi->reset_gpio, 0); + return ret; +} + +static int jdi_panel_enable(struct drm_panel *panel) +{ + struct jdi_panel *jdi = to_jdi_panel(panel); + + if (jdi->enabled) + return 0; + + DRM_DEBUG("enable\n"); + + if (jdi->backlight) { + jdi->backlight->props.power = FB_BLANK_UNBLANK; + backlight_update_status(jdi->backlight); + } + + jdi->enabled = true; + + return 0; +} + +static const struct drm_display_mode default_mode = { + .clock = 1000000, + .hdisplay = 1200, + .hsync_start = 1200 + 48, + .hsync_end = 1200 + 48 + 32, + .htotal = 1200 + 48 + 32 + 60, + .vdisplay = 1920, + .vsync_start = 1920 + 3, + .vsync_end = 1920 + 3 + 5, + .vtotal = 1920 + 3 + 5 + 6, + .vrefresh = 60, + .flags = 0, +}; + +static int jdi_panel_get_modes(struct drm_panel *panel) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(panel->drm, &default_mode); + if (!mode) { + dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", + default_mode.hdisplay, default_mode.vdisplay, + default_mode.vrefresh); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + drm_mode_probed_add(panel->connector, mode); + + panel->connector->display_info.width_mm = 95; + panel->connector->display_info.height_mm = 151; + + return 1; +} + +static const struct drm_panel_funcs jdi_panel_funcs = { + .disable = jdi_panel_disable, + .unprepare = jdi_panel_unprepare, + .prepare = jdi_panel_prepare, + .enable = jdi_panel_enable, + .get_modes = jdi_panel_get_modes, +}; + +static const struct of_device_id jdi_of_match[] = { + { .compatible = "jdi,lt070me05000", }, + { } +}; +MODULE_DEVICE_TABLE(of, jdi_of_match); + +static int jdi_panel_add(struct jdi_panel *jdi) +{ + struct device *dev= &jdi->dsi->dev; + struct device_node *np; + int ret; + + jdi->mode = &default_mode; + + jdi->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(jdi->supply)) + return PTR_ERR(jdi->supply); + + jdi->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(jdi->reset_gpio)) { + dev_err(dev, "cannot get reset-gpios %ld\n", + PTR_ERR(jdi->reset_gpio)); + jdi->reset_gpio = NULL; + } else { + gpiod_direction_output(jdi->reset_gpio, 0); + } + + np = of_parse_phandle(dev->of_node, "backlight", 0); + if (np) { + jdi->backlight = of_find_backlight_by_node(np); + of_node_put(np); + + if (!jdi->backlight) + return -EPROBE_DEFER; + } + + drm_panel_init(&jdi->base); + jdi->base.funcs = &jdi_panel_funcs; + jdi->base.dev = &jdi->dsi->dev; + + ret = drm_panel_add(&jdi->base); + if (ret < 0) + goto put_backlight; + + return 0; + + put_backlight: + if (jdi->backlight) + put_device(&jdi->backlight->dev); + + return ret; +} + +static void jdi_panel_del(struct jdi_panel *jdi) +{ + if (jdi->base.dev) + drm_panel_remove(&jdi->base); + + if (jdi->backlight) + put_device(&jdi->backlight->dev); +} + +static int jdi_panel_probe(struct mipi_dsi_device *dsi) +{ + struct jdi_panel *jdi; + int ret; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_EOT_PACKET; + + jdi = devm_kzalloc(&dsi->dev, sizeof(*jdi), GFP_KERNEL); + if (!jdi) { + return -ENOMEM; + } + + mipi_dsi_set_drvdata(dsi, jdi); + + jdi->dsi = dsi; + + ret = jdi_panel_add(jdi); + if (ret < 0) { + return ret; + } + + return mipi_dsi_attach(dsi); +} + +static int jdi_panel_remove(struct mipi_dsi_device *dsi) +{ + struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = jdi_panel_disable(&jdi->base); + if (ret < 0) + dev_err(&dsi->dev, "failed to disable panel: %d\n", ret); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); + + drm_panel_detach(&jdi->base); + jdi_panel_del(jdi); + + return 0; +} + +static void jdi_panel_shutdown(struct mipi_dsi_device *dsi) +{ + struct jdi_panel *jdi = mipi_dsi_get_drvdata(dsi); + + jdi_panel_disable(&jdi->base); +} + +static struct mipi_dsi_driver jdi_panel_driver = { + .driver = { + .name = "panel-jdi-lt070me05000", + .of_match_table = jdi_of_match, + }, + .probe = jdi_panel_probe, + .remove = jdi_panel_remove, + .shutdown = jdi_panel_shutdown, +}; +module_mipi_dsi_driver(jdi_panel_driver); + +MODULE_AUTHOR("Sumit Semwal <sumit.semwal@linaro.org>"); +MODULE_AUTHOR("Vinay Simha BN <vinaysimha@inforcecomputing.com>"); +MODULE_DESCRIPTION("JDI WUXGA LT070ME05000 DSI command mode panel driver"); +MODULE_LICENSE("GPL v2"); |