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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/gpu/drm/tiny/mi0283qt.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/tiny/mi0283qt.c')
-rw-r--r--drivers/gpu/drm/tiny/mi0283qt.c279
1 files changed, 279 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tiny/mi0283qt.c b/drivers/gpu/drm/tiny/mi0283qt.c
new file mode 100644
index 0000000000..01ff43c8ac
--- /dev/null
+++ b/drivers/gpu/drm/tiny/mi0283qt.c
@@ -0,0 +1,279 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * DRM driver for Multi-Inno MI0283QT panels
+ *
+ * Copyright 2016 Noralf Trønnes
+ */
+
+#include <linux/backlight.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 <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fbdev_generic.h>
+#include <drm/drm_gem_atomic_helper.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_managed.h>
+#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_modeset_helper.h>
+#include <video/mipi_display.h>
+
+#define ILI9341_FRMCTR1 0xb1
+#define ILI9341_DISCTRL 0xb6
+#define ILI9341_ETMOD 0xb7
+
+#define ILI9341_PWCTRL1 0xc0
+#define ILI9341_PWCTRL2 0xc1
+#define ILI9341_VMCTRL1 0xc5
+#define ILI9341_VMCTRL2 0xc7
+#define ILI9341_PWCTRLA 0xcb
+#define ILI9341_PWCTRLB 0xcf
+
+#define ILI9341_PGAMCTRL 0xe0
+#define ILI9341_NGAMCTRL 0xe1
+#define ILI9341_DTCTRLA 0xe8
+#define ILI9341_DTCTRLB 0xea
+#define ILI9341_PWRSEQ 0xed
+
+#define ILI9341_EN3GAM 0xf2
+#define ILI9341_PUMPCTRL 0xf7
+
+#define ILI9341_MADCTL_BGR BIT(3)
+#define ILI9341_MADCTL_MV BIT(5)
+#define ILI9341_MADCTL_MX BIT(6)
+#define ILI9341_MADCTL_MY BIT(7)
+
+static void mi0283qt_enable(struct drm_simple_display_pipe *pipe,
+ struct drm_crtc_state *crtc_state,
+ struct drm_plane_state *plane_state)
+{
+ struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(pipe->crtc.dev);
+ struct mipi_dbi *dbi = &dbidev->dbi;
+ u8 addr_mode;
+ int ret, idx;
+
+ if (!drm_dev_enter(pipe->crtc.dev, &idx))
+ return;
+
+ DRM_DEBUG_KMS("\n");
+
+ ret = mipi_dbi_poweron_conditional_reset(dbidev);
+ if (ret < 0)
+ goto out_exit;
+ if (ret == 1)
+ goto out_enable;
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_OFF);
+
+ mipi_dbi_command(dbi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30);
+ mipi_dbi_command(dbi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81);
+ mipi_dbi_command(dbi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79);
+ mipi_dbi_command(dbi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02);
+ mipi_dbi_command(dbi, ILI9341_PUMPCTRL, 0x20);
+ mipi_dbi_command(dbi, ILI9341_DTCTRLB, 0x00, 0x00);
+
+ /* Power Control */
+ mipi_dbi_command(dbi, ILI9341_PWCTRL1, 0x26);
+ mipi_dbi_command(dbi, ILI9341_PWCTRL2, 0x11);
+ /* VCOM */
+ mipi_dbi_command(dbi, ILI9341_VMCTRL1, 0x35, 0x3e);
+ mipi_dbi_command(dbi, ILI9341_VMCTRL2, 0xbe);
+
+ /* Memory Access Control */
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
+
+ /* Frame Rate */
+ mipi_dbi_command(dbi, ILI9341_FRMCTR1, 0x00, 0x1b);
+
+ /* Gamma */
+ mipi_dbi_command(dbi, ILI9341_EN3GAM, 0x08);
+ mipi_dbi_command(dbi, MIPI_DCS_SET_GAMMA_CURVE, 0x01);
+ mipi_dbi_command(dbi, ILI9341_PGAMCTRL,
+ 0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87,
+ 0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00);
+ mipi_dbi_command(dbi, ILI9341_NGAMCTRL,
+ 0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78,
+ 0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f);
+
+ /* DDRAM */
+ mipi_dbi_command(dbi, ILI9341_ETMOD, 0x07);
+
+ /* Display */
+ mipi_dbi_command(dbi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00);
+ mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(100);
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+ msleep(100);
+
+out_enable:
+ /* The PiTFT (ili9340) has a hardware reset circuit that
+ * resets only on power-on and not on each reboot through
+ * a gpio like the rpi-display does.
+ * As a result, we need to always apply the rotation value
+ * regardless of the display "on/off" state.
+ */
+ switch (dbidev->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(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+ mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+out_exit:
+ drm_dev_exit(idx);
+}
+
+static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = {
+ DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS(mi0283qt_enable),
+};
+
+static const struct drm_display_mode mi0283qt_mode = {
+ DRM_SIMPLE_MODE(320, 240, 58, 43),
+};
+
+DEFINE_DRM_GEM_DMA_FOPS(mi0283qt_fops);
+
+static const struct drm_driver mi0283qt_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ .fops = &mi0283qt_fops,
+ DRM_GEM_DMA_DRIVER_OPS_VMAP,
+ .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 mipi_dbi_dev *dbidev;
+ struct drm_device *drm;
+ struct mipi_dbi *dbi;
+ struct gpio_desc *dc;
+ u32 rotation = 0;
+ int ret;
+
+ dbidev = devm_drm_dev_alloc(dev, &mi0283qt_driver,
+ struct mipi_dbi_dev, drm);
+ if (IS_ERR(dbidev))
+ return PTR_ERR(dbidev);
+
+ dbi = &dbidev->dbi;
+ drm = &dbidev->drm;
+
+ dbi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(dbi->reset))
+ return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n");
+
+ dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
+ if (IS_ERR(dc))
+ return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n");
+
+ dbidev->regulator = devm_regulator_get(dev, "power");
+ if (IS_ERR(dbidev->regulator))
+ return PTR_ERR(dbidev->regulator);
+
+ dbidev->backlight = devm_of_find_backlight(dev);
+ if (IS_ERR(dbidev->backlight))
+ return PTR_ERR(dbidev->backlight);
+
+ device_property_read_u32(dev, "rotation", &rotation);
+
+ ret = mipi_dbi_spi_init(spi, dbi, dc);
+ if (ret)
+ return ret;
+
+ ret = mipi_dbi_dev_init(dbidev, &mi0283qt_pipe_funcs, &mi0283qt_mode, rotation);
+ if (ret)
+ return ret;
+
+ drm_mode_config_reset(drm);
+
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ return ret;
+
+ spi_set_drvdata(spi, drm);
+
+ drm_fbdev_generic_setup(drm, 0);
+
+ return 0;
+}
+
+static void mi0283qt_remove(struct spi_device *spi)
+{
+ struct drm_device *drm = spi_get_drvdata(spi);
+
+ drm_dev_unplug(drm);
+ drm_atomic_helper_shutdown(drm);
+}
+
+static void mi0283qt_shutdown(struct spi_device *spi)
+{
+ drm_atomic_helper_shutdown(spi_get_drvdata(spi));
+}
+
+static int __maybe_unused mi0283qt_pm_suspend(struct device *dev)
+{
+ return drm_mode_config_helper_suspend(dev_get_drvdata(dev));
+}
+
+static int __maybe_unused mi0283qt_pm_resume(struct device *dev)
+{
+ drm_mode_config_helper_resume(dev_get_drvdata(dev));
+
+ return 0;
+}
+
+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,
+ .remove = mi0283qt_remove,
+ .shutdown = mi0283qt_shutdown,
+};
+module_spi_driver(mi0283qt_spi_driver);
+
+MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver");
+MODULE_AUTHOR("Noralf Trønnes");
+MODULE_LICENSE("GPL");