[PATCH 3/6] drm/tinydrm: rename mi028qt module to mipi-panel
David Lechner
david at lechnology.com
Sat Jul 29 12:17:47 PDT 2017
This renames the mi028qt module to mipi-panel so that it can be used for
other types of panels as well. There is no reason to copy a bunch of
boiler-plate code for each panel or controller.
Signed-off-by: David Lechner <david at lechnology.com>
---
.../devicetree/bindings/display/mipi-panel.txt | 27 ++
.../bindings/display/multi-inno,mi0283qt.txt | 27 --
MAINTAINERS | 6 +-
drivers/gpu/drm/tinydrm/Kconfig | 12 +-
drivers/gpu/drm/tinydrm/Makefile | 2 +-
drivers/gpu/drm/tinydrm/mi0283qt.c | 283 --------------------
drivers/gpu/drm/tinydrm/mipi-panel.c | 284 +++++++++++++++++++++
7 files changed, 323 insertions(+), 318 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/mipi-panel.txt
delete mode 100644 Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
delete mode 100644 drivers/gpu/drm/tinydrm/mi0283qt.c
create mode 100644 drivers/gpu/drm/tinydrm/mipi-panel.c
diff --git a/Documentation/devicetree/bindings/display/mipi-panel.txt b/Documentation/devicetree/bindings/display/mipi-panel.txt
new file mode 100644
index 0000000..01d6ea9
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mipi-panel.txt
@@ -0,0 +1,27 @@
+MIPI DBI compatible display panel
+
+Required properties:
+- compatible: "multi-inno,mi0283qt".
+
+The node for this driver must be a child node of a SPI controller, hence
+all mandatory properties described in ../spi/spi-bus.txt must be specified.
+
+Optional properties:
+- dc-gpios: D/C pin. The presence/absence of this GPIO determines
+ the panel interface mode (IM[3:0] pins):
+ - present: IM=x110 4-wire 8-bit data serial interface
+ - absent: IM=x101 3-wire 9-bit data serial interface
+- reset-gpios: Reset pin
+- power-supply: A regulator node for the supply voltage.
+- backlight: phandle of the backlight device attached to the panel
+- rotation: panel rotation in degrees counter clockwise (0,90,180,270)
+
+Example:
+ display at 0{
+ compatible = "multi-inno,mi0283qt";
+ reg = <0>;
+ spi-max-frequency = <32000000>;
+ rotation = <90>;
+ dc-gpios = <&gpio 25 0>;
+ backlight = <&backlight>;
+ };
diff --git a/Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt b/Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
deleted file mode 100644
index eed48c3..0000000
--- a/Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-Multi-Inno MI0283QT display panel
-
-Required properties:
-- compatible: "multi-inno,mi0283qt".
-
-The node for this driver must be a child node of a SPI controller, hence
-all mandatory properties described in ../spi/spi-bus.txt must be specified.
-
-Optional properties:
-- dc-gpios: D/C pin. The presence/absence of this GPIO determines
- the panel interface mode (IM[3:0] pins):
- - present: IM=x110 4-wire 8-bit data serial interface
- - absent: IM=x101 3-wire 9-bit data serial interface
-- reset-gpios: Reset pin
-- power-supply: A regulator node for the supply voltage.
-- backlight: phandle of the backlight device attached to the panel
-- rotation: panel rotation in degrees counter clockwise (0,90,180,270)
-
-Example:
- mi0283qt at 0{
- compatible = "multi-inno,mi0283qt";
- reg = <0>;
- spi-max-frequency = <32000000>;
- rotation = <90>;
- dc-gpios = <&gpio 25 0>;
- backlight = <&backlight>;
- };
diff --git a/MAINTAINERS b/MAINTAINERS
index f66488d..812ffd0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4315,11 +4315,11 @@ M: Dave Airlie <airlied at redhat.com>
S: Odd Fixes
F: drivers/gpu/drm/mgag200/
-DRM DRIVER FOR MI0283QT
+DRM DRIVER FOR MIPI DBI compatible panels
M: Noralf Trønnes <noralf at tronnes.org>
S: Maintained
-F: drivers/gpu/drm/tinydrm/mi0283qt.c
-F: Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
+F: drivers/gpu/drm/tinydrm/mipi-panel.c
+F: Documentation/devicetree/bindings/display/mipi-panel.txt
DRM DRIVER FOR MSM ADRENO GPU
M: Rob Clark <robdclark at gmail.com>
diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig
index 3504c53..394519b 100644
--- a/drivers/gpu/drm/tinydrm/Kconfig
+++ b/drivers/gpu/drm/tinydrm/Kconfig
@@ -12,10 +12,14 @@ menuconfig DRM_TINYDRM
config TINYDRM_MIPI_DBI
tristate
-config TINYDRM_MI0283QT
- tristate "DRM support for MI0283QT"
+config TINYDRM_MIPI_PANEL
+ tristate "DRM support for MIPI DBI compatible display panels"
depends on DRM_TINYDRM && SPI
select TINYDRM_MIPI_DBI
help
- DRM driver for the Multi-Inno MI0283QT display panel
- If M is selected the module will be called mi0283qt.
+ DRM driver for the MIPI DBI compatible display panels.
+
+ Supported panels include:
+ * Multi-Inno MI0283QT
+
+ If M is selected the module will be called mipi-panel.
diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile
index 7a3604c..7eae65e 100644
--- a/drivers/gpu/drm/tinydrm/Makefile
+++ b/drivers/gpu/drm/tinydrm/Makefile
@@ -4,4 +4,4 @@ obj-$(CONFIG_DRM_TINYDRM) += core/
obj-$(CONFIG_TINYDRM_MIPI_DBI) += mipi-dbi.o
# Displays
-obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o
+obj-$(CONFIG_TINYDRM_MIPI_PANEL) += mipi-panel.o
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
deleted file mode 100644
index 2680dab..0000000
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * DRM driver for Multi-Inno MI0283QT panels
- *
- * Copyright 2016 Noralf Trønnes
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <drm/tinydrm/ili9341.h>
-#include <drm/tinydrm/mipi-dbi.h>
-#include <drm/tinydrm/tinydrm-helpers.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/module.h>
-#include <linux/property.h>
-#include <linux/regulator/consumer.h>
-#include <linux/spi/spi.h>
-#include <video/mipi_display.h>
-
-static int mi0283qt_init(struct mipi_dbi *mipi)
-{
- struct tinydrm_device *tdev = &mipi->tinydrm;
- struct device *dev = tdev->drm->dev;
- u8 addr_mode;
- int ret;
-
- DRM_DEBUG_KMS("\n");
-
- ret = regulator_enable(mipi->regulator);
- if (ret) {
- dev_err(dev, "Failed to enable regulator %d\n", ret);
- return ret;
- }
-
- /* Avoid flicker by skipping setup if the bootloader has done it */
- if (mipi_dbi_display_is_on(mipi))
- return 0;
-
- mipi_dbi_hw_reset(mipi);
- ret = mipi_dbi_command(mipi, MIPI_DCS_SOFT_RESET);
- if (ret) {
- dev_err(dev, "Error sending command %d\n", ret);
- regulator_disable(mipi->regulator);
- return ret;
- }
-
- msleep(20);
-
- mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF);
-
- mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30);
- mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
- mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79);
- mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
- mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20);
- mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00);
-
- /* Power Control */
- mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x26);
- mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x11);
- /* VCOM */
- mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x35, 0x3e);
- mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0xbe);
-
- /* Memory Access Control */
- mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
-
- switch (mipi->rotation) {
- default:
- addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
- ILI9341_MADCTL_MX;
- break;
- case 90:
- addr_mode = ILI9341_MADCTL_MY;
- break;
- case 180:
- addr_mode = ILI9341_MADCTL_MV;
- break;
- case 270:
- addr_mode = ILI9341_MADCTL_MX;
- break;
- }
- addr_mode |= ILI9341_MADCTL_BGR;
- mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-
- /* Frame Rate */
- mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b);
-
- /* Gamma */
- mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x08);
- mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
- mipi_dbi_command(mipi, ILI9341_PGAMCTRL,
- 0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
- 0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00);
- mipi_dbi_command(mipi, ILI9341_NGAMCTRL,
- 0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
- 0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f);
-
- /* DDRAM */
- mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07);
-
- /* Display */
- mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00);
- mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE);
- msleep(100);
-
- mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON);
- msleep(100);
-
- return 0;
-}
-
-static void mi0283qt_fini(void *data)
-{
- struct mipi_dbi *mipi = data;
-
- DRM_DEBUG_KMS("\n");
- regulator_disable(mipi->regulator);
-}
-
-static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = {
- .enable = mipi_dbi_pipe_enable,
- .disable = mipi_dbi_pipe_disable,
- .update = tinydrm_display_pipe_update,
- .prepare_fb = tinydrm_display_pipe_prepare_fb,
-};
-
-static const struct drm_display_mode mi0283qt_mode = {
- TINYDRM_MODE(320, 240, 58, 43),
-};
-
-DEFINE_DRM_GEM_CMA_FOPS(mi0283qt_fops);
-
-static struct drm_driver mi0283qt_driver = {
- .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
- DRIVER_ATOMIC,
- .fops = &mi0283qt_fops,
- TINYDRM_GEM_DRIVER_OPS,
- .lastclose = tinydrm_lastclose,
- .debugfs_init = mipi_dbi_debugfs_init,
- .name = "mi0283qt",
- .desc = "Multi-Inno MI0283QT",
- .date = "20160614",
- .major = 1,
- .minor = 0,
-};
-
-static const struct of_device_id mi0283qt_of_match[] = {
- { .compatible = "multi-inno,mi0283qt" },
- {},
-};
-MODULE_DEVICE_TABLE(of, mi0283qt_of_match);
-
-static const struct spi_device_id mi0283qt_id[] = {
- { "mi0283qt", 0 },
- { },
-};
-MODULE_DEVICE_TABLE(spi, mi0283qt_id);
-
-static int mi0283qt_probe(struct spi_device *spi)
-{
- struct device *dev = &spi->dev;
- struct tinydrm_device *tdev;
- struct mipi_dbi *mipi;
- struct gpio_desc *dc;
- u32 rotation = 0;
- int ret;
-
- mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
- if (!mipi)
- return -ENOMEM;
-
- mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
- if (IS_ERR(mipi->reset)) {
- dev_err(dev, "Failed to get gpio 'reset'\n");
- return PTR_ERR(mipi->reset);
- }
-
- dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
- if (IS_ERR(dc)) {
- dev_err(dev, "Failed to get gpio 'dc'\n");
- return PTR_ERR(dc);
- }
-
- mipi->regulator = devm_regulator_get(dev, "power");
- if (IS_ERR(mipi->regulator))
- return PTR_ERR(mipi->regulator);
-
- mipi->backlight = tinydrm_of_find_backlight(dev);
- if (IS_ERR(mipi->backlight))
- return PTR_ERR(mipi->backlight);
-
- device_property_read_u32(dev, "rotation", &rotation);
-
- ret = mipi_dbi_spi_init(spi, mipi, dc, &mi0283qt_pipe_funcs,
- &mi0283qt_driver, &mi0283qt_mode,
- MIPI_DCS_PIXEL_FMT_16BIT, rotation);
- if (ret)
- return ret;
-
- ret = mi0283qt_init(mipi);
- if (ret)
- return ret;
-
- /* use devres to fini after drm unregister (drv->remove is before) */
- ret = devm_add_action(dev, mi0283qt_fini, mipi);
- if (ret) {
- mi0283qt_fini(mipi);
- return ret;
- }
-
- tdev = &mipi->tinydrm;
-
- ret = devm_tinydrm_register(tdev);
- if (ret)
- return ret;
-
- spi_set_drvdata(spi, mipi);
-
- DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
- tdev->drm->driver->name, dev_name(dev),
- spi->max_speed_hz / 1000000,
- tdev->drm->primary->index);
-
- return 0;
-}
-
-static void mi0283qt_shutdown(struct spi_device *spi)
-{
- struct mipi_dbi *mipi = spi_get_drvdata(spi);
-
- tinydrm_shutdown(&mipi->tinydrm);
-}
-
-static int __maybe_unused mi0283qt_pm_suspend(struct device *dev)
-{
- struct mipi_dbi *mipi = dev_get_drvdata(dev);
- int ret;
-
- ret = tinydrm_suspend(&mipi->tinydrm);
- if (ret)
- return ret;
-
- mi0283qt_fini(mipi);
-
- return 0;
-}
-
-static int __maybe_unused mi0283qt_pm_resume(struct device *dev)
-{
- struct mipi_dbi *mipi = dev_get_drvdata(dev);
- int ret;
-
- ret = mi0283qt_init(mipi);
- if (ret)
- return ret;
-
- return tinydrm_resume(&mipi->tinydrm);
-}
-
-static const struct dev_pm_ops mi0283qt_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(mi0283qt_pm_suspend, mi0283qt_pm_resume)
-};
-
-static struct spi_driver mi0283qt_spi_driver = {
- .driver = {
- .name = "mi0283qt",
- .owner = THIS_MODULE,
- .of_match_table = mi0283qt_of_match,
- .pm = &mi0283qt_pm_ops,
- },
- .id_table = mi0283qt_id,
- .probe = mi0283qt_probe,
- .shutdown = mi0283qt_shutdown,
-};
-module_spi_driver(mi0283qt_spi_driver);
-
-MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver");
-MODULE_AUTHOR("Noralf Trønnes");
-MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tinydrm/mipi-panel.c b/drivers/gpu/drm/tinydrm/mipi-panel.c
new file mode 100644
index 0000000..64344f0
--- /dev/null
+++ b/drivers/gpu/drm/tinydrm/mipi-panel.c
@@ -0,0 +1,284 @@
+/*
+ * DRM driver for MIPI DBI compatible panels
+ *
+ * Copyright 2016 Noralf Trønnes
+ * Copyright 2017 David Lechner <david at lechnology.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <drm/tinydrm/ili9341.h>
+#include <drm/tinydrm/mipi-dbi.h>
+#include <drm/tinydrm/tinydrm-helpers.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <video/mipi_display.h>
+
+static int mipi_panel_init(struct mipi_dbi *mipi)
+{
+ struct tinydrm_device *tdev = &mipi->tinydrm;
+ struct device *dev = tdev->drm->dev;
+ u8 addr_mode;
+ int ret;
+
+ DRM_DEBUG_KMS("\n");
+
+ ret = regulator_enable(mipi->regulator);
+ if (ret) {
+ dev_err(dev, "Failed to enable regulator %d\n", ret);
+ return ret;
+ }
+
+ /* Avoid flicker by skipping setup if the bootloader has done it */
+ if (mipi_dbi_display_is_on(mipi))
+ return 0;
+
+ mipi_dbi_hw_reset(mipi);
+ ret = mipi_dbi_command(mipi, MIPI_DCS_SOFT_RESET);
+ if (ret) {
+ dev_err(dev, "Error sending command %d\n", ret);
+ regulator_disable(mipi->regulator);
+ return ret;
+ }
+
+ msleep(20);
+
+ mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF);
+
+ mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30);
+ mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
+ mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79);
+ mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
+ mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20);
+ mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00);
+
+ /* Power Control */
+ mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x26);
+ mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x11);
+ /* VCOM */
+ mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x35, 0x3e);
+ mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0xbe);
+
+ /* Memory Access Control */
+ mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
+
+ switch (mipi->rotation) {
+ default:
+ addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
+ ILI9341_MADCTL_MX;
+ break;
+ case 90:
+ addr_mode = ILI9341_MADCTL_MY;
+ break;
+ case 180:
+ addr_mode = ILI9341_MADCTL_MV;
+ break;
+ case 270:
+ addr_mode = ILI9341_MADCTL_MX;
+ break;
+ }
+ addr_mode |= ILI9341_MADCTL_BGR;
+ mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+
+ /* Frame Rate */
+ mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b);
+
+ /* Gamma */
+ mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x08);
+ mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
+ mipi_dbi_command(mipi, ILI9341_PGAMCTRL,
+ 0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
+ 0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00);
+ mipi_dbi_command(mipi, ILI9341_NGAMCTRL,
+ 0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
+ 0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f);
+
+ /* DDRAM */
+ mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07);
+
+ /* Display */
+ mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00);
+ mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(100);
+
+ mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON);
+ msleep(100);
+
+ return 0;
+}
+
+static void mipi_panel_fini(void *data)
+{
+ struct mipi_dbi *mipi = data;
+
+ DRM_DEBUG_KMS("\n");
+ regulator_disable(mipi->regulator);
+}
+
+static const struct drm_simple_display_pipe_funcs mipi_panel_pipe_funcs = {
+ .enable = mipi_dbi_pipe_enable,
+ .disable = mipi_dbi_pipe_disable,
+ .update = tinydrm_display_pipe_update,
+ .prepare_fb = tinydrm_display_pipe_prepare_fb,
+};
+
+static const struct drm_display_mode mipi_panel_mode = {
+ TINYDRM_MODE(320, 240, 58, 43),
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(mipi_panel_fops);
+
+static struct drm_driver mipi_panel_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
+ DRIVER_ATOMIC,
+ .fops = &mipi_panel_fops,
+ TINYDRM_GEM_DRIVER_OPS,
+ .lastclose = tinydrm_lastclose,
+ .debugfs_init = mipi_dbi_debugfs_init,
+ .name = "mipi-panel",
+ .desc = "MIPI DBI compatible panel",
+ .date = "20160614",
+ .major = 1,
+ .minor = 0,
+};
+
+static const struct of_device_id mipi_panel_of_match[] = {
+ { .compatible = "multi-inno,mi0283qt" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mipi_panel_of_match);
+
+static const struct spi_device_id mipi_panel_id[] = {
+ { "mi0283qt", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(spi, mipi_panel_id);
+
+static int mipi_panel_probe(struct spi_device *spi)
+{
+ struct device *dev = &spi->dev;
+ struct tinydrm_device *tdev;
+ struct mipi_dbi *mipi;
+ struct gpio_desc *dc;
+ u32 rotation = 0;
+ int ret;
+
+ mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
+ if (!mipi)
+ return -ENOMEM;
+
+ mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(mipi->reset)) {
+ dev_err(dev, "Failed to get gpio 'reset'\n");
+ return PTR_ERR(mipi->reset);
+ }
+
+ dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
+ if (IS_ERR(dc)) {
+ dev_err(dev, "Failed to get gpio 'dc'\n");
+ return PTR_ERR(dc);
+ }
+
+ mipi->regulator = devm_regulator_get(dev, "power");
+ if (IS_ERR(mipi->regulator))
+ return PTR_ERR(mipi->regulator);
+
+ mipi->backlight = tinydrm_of_find_backlight(dev);
+ if (IS_ERR(mipi->backlight))
+ return PTR_ERR(mipi->backlight);
+
+ device_property_read_u32(dev, "rotation", &rotation);
+
+ ret = mipi_dbi_spi_init(spi, mipi, dc, &mipi_panel_pipe_funcs,
+ &mipi_panel_driver, &mipi_panel_mode,
+ MIPI_DCS_PIXEL_FMT_16BIT, rotation);
+ if (ret)
+ return ret;
+
+ ret = mipi_panel_init(mipi);
+ if (ret)
+ return ret;
+
+ /* use devres to fini after drm unregister (drv->remove is before) */
+ ret = devm_add_action(dev, mipi_panel_fini, mipi);
+ if (ret) {
+ mipi_panel_fini(mipi);
+ return ret;
+ }
+
+ tdev = &mipi->tinydrm;
+
+ ret = devm_tinydrm_register(tdev);
+ if (ret)
+ return ret;
+
+ spi_set_drvdata(spi, mipi);
+
+ DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
+ tdev->drm->driver->name, dev_name(dev),
+ spi->max_speed_hz / 1000000,
+ tdev->drm->primary->index);
+
+ return 0;
+}
+
+static void mipi_panel_shutdown(struct spi_device *spi)
+{
+ struct mipi_dbi *mipi = spi_get_drvdata(spi);
+
+ tinydrm_shutdown(&mipi->tinydrm);
+}
+
+static int __maybe_unused mipi_panel_pm_suspend(struct device *dev)
+{
+ struct mipi_dbi *mipi = dev_get_drvdata(dev);
+ int ret;
+
+ ret = tinydrm_suspend(&mipi->tinydrm);
+ if (ret)
+ return ret;
+
+ mipi_panel_fini(mipi);
+
+ return 0;
+}
+
+static int __maybe_unused mipi_panel_pm_resume(struct device *dev)
+{
+ struct mipi_dbi *mipi = dev_get_drvdata(dev);
+ int ret;
+
+ ret = mipi_panel_init(mipi);
+ if (ret)
+ return ret;
+
+ return tinydrm_resume(&mipi->tinydrm);
+}
+
+static const struct dev_pm_ops mipi_panel_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(mipi_panel_pm_suspend, mipi_panel_pm_resume)
+};
+
+static struct spi_driver mipi_panel_spi_driver = {
+ .driver = {
+ .name = "mipi-panel",
+ .owner = THIS_MODULE,
+ .of_match_table = mipi_panel_of_match,
+ .pm = &mipi_panel_pm_ops,
+ },
+ .id_table = mipi_panel_id,
+ .probe = mipi_panel_probe,
+ .shutdown = mipi_panel_shutdown,
+};
+module_spi_driver(mipi_panel_spi_driver);
+
+MODULE_DESCRIPTION("MIPI DBI panel DRM driver");
+MODULE_AUTHOR("Noralf Trønnes");
+MODULE_LICENSE("GPL");
--
2.7.4
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