drm/tinydrm: Add support for Multi-Inno MI0283QT display
Add driver to support the Multi-Inno MI0283QT display panel. It has an ILI9341 MIPI DBI compatible display controller. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Noralf Trønnes
parent
6b4e48b5a9
commit
1f47e6cbf5
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@ -4245,6 +4245,12 @@ S: Supported
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F: drivers/gpu/drm/mediatek/
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F: Documentation/devicetree/bindings/display/mediatek/
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DRM DRIVER FOR MI0283QT
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M: Noralf Trønnes <noralf@tronnes.org>
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S: Maintained
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F: drivers/gpu/drm/tinydrm/mi0283qt.c
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F: Documentation/devicetree/bindings/display/multi-inno,mi0283qt.txt
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DRM DRIVER FOR MSM ADRENO GPU
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M: Rob Clark <robdclark@gmail.com>
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L: linux-arm-msm@vger.kernel.org
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@ -11,3 +11,11 @@ menuconfig DRM_TINYDRM
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config TINYDRM_MIPI_DBI
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tristate
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config TINYDRM_MI0283QT
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tristate "DRM support for MI0283QT"
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depends on DRM_TINYDRM && SPI
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select TINYDRM_MIPI_DBI
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help
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DRM driver for the Multi-Inno MI0283QT display panel
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If M is selected the module will be called mi0283qt.
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@ -2,3 +2,6 @@ obj-$(CONFIG_DRM_TINYDRM) += core/
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# Controllers
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obj-$(CONFIG_TINYDRM_MIPI_DBI) += mipi-dbi.o
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# Displays
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obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o
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@ -0,0 +1,279 @@
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/*
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* DRM driver for Multi-Inno MI0283QT panels
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*
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* Copyright 2016 Noralf Trønnes
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <drm/tinydrm/ili9341.h>
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#include <drm/tinydrm/mipi-dbi.h>
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#include <drm/tinydrm/tinydrm-helpers.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/property.h>
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#include <linux/regulator/consumer.h>
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#include <linux/spi/spi.h>
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#include <video/mipi_display.h>
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static int mi0283qt_init(struct mipi_dbi *mipi)
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{
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struct tinydrm_device *tdev = &mipi->tinydrm;
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struct device *dev = tdev->drm->dev;
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u8 addr_mode;
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int ret;
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DRM_DEBUG_KMS("\n");
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ret = regulator_enable(mipi->regulator);
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if (ret) {
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dev_err(dev, "Failed to enable regulator %d\n", ret);
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return ret;
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}
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/* Avoid flicker by skipping setup if the bootloader has done it */
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if (mipi_dbi_display_is_on(mipi))
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return 0;
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mipi_dbi_hw_reset(mipi);
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ret = mipi_dbi_command(mipi, MIPI_DCS_SOFT_RESET);
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if (ret) {
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dev_err(dev, "Error sending command %d\n", ret);
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regulator_disable(mipi->regulator);
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return ret;
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}
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msleep(20);
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mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF);
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mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30);
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mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
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mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79);
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mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
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mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20);
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mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00);
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/* Power Control */
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mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x26);
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mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x11);
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/* VCOM */
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mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x35, 0x3e);
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mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0xbe);
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/* Memory Access Control */
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mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55);
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switch (mipi->rotation) {
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default:
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addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
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ILI9341_MADCTL_MX;
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break;
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case 90:
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addr_mode = ILI9341_MADCTL_MY;
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break;
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case 180:
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addr_mode = ILI9341_MADCTL_MV;
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break;
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case 270:
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addr_mode = ILI9341_MADCTL_MX;
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break;
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}
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addr_mode |= ILI9341_MADCTL_BGR;
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mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
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/* Frame Rate */
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mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b);
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/* Gamma */
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mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x08);
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mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
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mipi_dbi_command(mipi, ILI9341_PGAMCTRL,
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0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
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0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00);
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mipi_dbi_command(mipi, ILI9341_NGAMCTRL,
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0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
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0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f);
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/* DDRAM */
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mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07);
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/* Display */
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mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00);
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mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE);
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msleep(100);
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mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON);
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msleep(100);
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return 0;
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}
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static void mi0283qt_fini(void *data)
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{
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struct mipi_dbi *mipi = data;
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DRM_DEBUG_KMS("\n");
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regulator_disable(mipi->regulator);
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}
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static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = {
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.enable = mipi_dbi_pipe_enable,
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.disable = mipi_dbi_pipe_disable,
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.update = tinydrm_display_pipe_update,
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.prepare_fb = tinydrm_display_pipe_prepare_fb,
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};
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static const struct drm_display_mode mi0283qt_mode = {
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TINYDRM_MODE(320, 240, 58, 43),
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};
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static struct drm_driver mi0283qt_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
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DRIVER_ATOMIC,
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TINYDRM_GEM_DRIVER_OPS,
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.lastclose = tinydrm_lastclose,
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.debugfs_init = mipi_dbi_debugfs_init,
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.name = "mi0283qt",
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.desc = "Multi-Inno MI0283QT",
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.date = "20160614",
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.major = 1,
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.minor = 0,
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};
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static const struct of_device_id mi0283qt_of_match[] = {
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{ .compatible = "multi-inno,mi0283qt" },
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{},
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};
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MODULE_DEVICE_TABLE(of, mi0283qt_of_match);
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static const struct spi_device_id mi0283qt_id[] = {
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{ "mi0283qt", 0 },
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{ },
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};
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MODULE_DEVICE_TABLE(spi, mi0283qt_id);
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static int mi0283qt_probe(struct spi_device *spi)
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{
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struct device *dev = &spi->dev;
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struct tinydrm_device *tdev;
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struct mipi_dbi *mipi;
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struct gpio_desc *dc;
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u32 rotation = 0;
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int ret;
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mipi = devm_kzalloc(dev, sizeof(*mipi), GFP_KERNEL);
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if (!mipi)
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return -ENOMEM;
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mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(mipi->reset)) {
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dev_err(dev, "Failed to get gpio 'reset'\n");
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return PTR_ERR(mipi->reset);
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}
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dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
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if (IS_ERR(dc)) {
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dev_err(dev, "Failed to get gpio 'dc'\n");
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return PTR_ERR(dc);
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}
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mipi->regulator = devm_regulator_get(dev, "power");
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if (IS_ERR(mipi->regulator))
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return PTR_ERR(mipi->regulator);
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mipi->backlight = tinydrm_of_find_backlight(dev);
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if (IS_ERR(mipi->backlight))
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return PTR_ERR(mipi->backlight);
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device_property_read_u32(dev, "rotation", &rotation);
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ret = mipi_dbi_spi_init(spi, mipi, dc, &mi0283qt_pipe_funcs,
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&mi0283qt_driver, &mi0283qt_mode, rotation);
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if (ret)
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return ret;
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ret = mi0283qt_init(mipi);
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if (ret)
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return ret;
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/* use devres to fini after drm unregister (drv->remove is before) */
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ret = devm_add_action(dev, mi0283qt_fini, mipi);
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if (ret) {
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mi0283qt_fini(mipi);
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return ret;
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}
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tdev = &mipi->tinydrm;
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ret = devm_tinydrm_register(tdev);
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if (ret)
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return ret;
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spi_set_drvdata(spi, mipi);
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DRM_DEBUG_DRIVER("Initialized %s:%s @%uMHz on minor %d\n",
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tdev->drm->driver->name, dev_name(dev),
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spi->max_speed_hz / 1000000,
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tdev->drm->primary->index);
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return 0;
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}
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static void mi0283qt_shutdown(struct spi_device *spi)
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{
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struct mipi_dbi *mipi = spi_get_drvdata(spi);
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tinydrm_shutdown(&mipi->tinydrm);
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}
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static int __maybe_unused mi0283qt_pm_suspend(struct device *dev)
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{
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struct mipi_dbi *mipi = dev_get_drvdata(dev);
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int ret;
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ret = tinydrm_suspend(&mipi->tinydrm);
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if (ret)
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return ret;
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mi0283qt_fini(mipi);
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return 0;
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}
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static int __maybe_unused mi0283qt_pm_resume(struct device *dev)
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{
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struct mipi_dbi *mipi = dev_get_drvdata(dev);
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int ret;
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ret = mi0283qt_init(mipi);
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if (ret)
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return ret;
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return tinydrm_resume(&mipi->tinydrm);
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}
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static const struct dev_pm_ops mi0283qt_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(mi0283qt_pm_suspend, mi0283qt_pm_resume)
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};
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static struct spi_driver mi0283qt_spi_driver = {
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.driver = {
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.name = "mi0283qt",
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.owner = THIS_MODULE,
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.of_match_table = mi0283qt_of_match,
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.pm = &mi0283qt_pm_ops,
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},
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.id_table = mi0283qt_id,
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.probe = mi0283qt_probe,
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.shutdown = mi0283qt_shutdown,
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};
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module_spi_driver(mi0283qt_spi_driver);
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MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver");
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MODULE_AUTHOR("Noralf Trønnes");
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MODULE_LICENSE("GPL");
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@ -0,0 +1,54 @@
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/*
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* ILI9341 LCD controller
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*
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* Copyright 2016 Noralf Trønnes
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __LINUX_ILI9341_H
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#define __LINUX_ILI9341_H
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#define ILI9341_FRMCTR1 0xb1
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#define ILI9341_FRMCTR2 0xb2
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#define ILI9341_FRMCTR3 0xb3
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#define ILI9341_INVTR 0xb4
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#define ILI9341_PRCTR 0xb5
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#define ILI9341_DISCTRL 0xb6
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#define ILI9341_ETMOD 0xb7
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#define ILI9341_PWCTRL1 0xc0
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#define ILI9341_PWCTRL2 0xc1
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#define ILI9341_VMCTRL1 0xc5
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#define ILI9341_VMCTRL2 0xc7
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#define ILI9341_PWCTRLA 0xcb
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#define ILI9341_PWCTRLB 0xcf
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#define ILI9341_RDID1 0xda
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#define ILI9341_RDID2 0xdb
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#define ILI9341_RDID3 0xdc
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#define ILI9341_RDID4 0xd3
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#define ILI9341_PGAMCTRL 0xe0
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#define ILI9341_NGAMCTRL 0xe1
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#define ILI9341_DGAMCTRL1 0xe2
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#define ILI9341_DGAMCTRL2 0xe3
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#define ILI9341_DTCTRLA 0xe8
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#define ILI9341_DTCTRLB 0xea
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#define ILI9341_PWRSEQ 0xed
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#define ILI9341_EN3GAM 0xf2
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#define ILI9341_IFCTRL 0xf6
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#define ILI9341_PUMPCTRL 0xf7
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#define ILI9341_MADCTL_MH BIT(2)
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#define ILI9341_MADCTL_BGR BIT(3)
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#define ILI9341_MADCTL_ML BIT(4)
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#define ILI9341_MADCTL_MV BIT(5)
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#define ILI9341_MADCTL_MX BIT(6)
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#define ILI9341_MADCTL_MY BIT(7)
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#endif /* __LINUX_ILI9341_H */
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