This panel is used on the Zoom2/3/3630 SDP boards.

Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
 drivers/gpu/drm/panel/Kconfig                |   7 +
 drivers/gpu/drm/panel/Makefile               |   1 +
 drivers/gpu/drm/panel/panel-nec-nl8048hl11.c | 249 +++++++++++++++++++
 3 files changed, 257 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-nec-nl8048hl11.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 1843135cbeb1..da613c04b835 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -118,6 +118,13 @@ config DRM_PANEL_LG_LG4573
          Say Y here if you want to enable support for LG4573 RGB panel.
          To compile this driver as a module, choose M here.
 
+config DRM_PANEL_NEC_NL8048HL11
+       tristate "NEC NL8048HL11 RGB panel"
+       depends on GPIOLIB && OF && SPI
+       help
+         Say Y here if you want to enable support for the NEC NL8048HL11 RGB
+         panel. To compile this driver as a module, choose M here.
+
 config DRM_PANEL_OLIMEX_LCD_OLINUXINO
        tristate "Olimex LCD-OLinuXino panel"
        depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 675b5696c685..e81ed1535024 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += 
panel-jdi-lt070me05000.o
 obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
 obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
 obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
+obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
 obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o
 obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o
 obj-$(CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS) += panel-osd-osd101t2587-53ts.o
diff --git a/drivers/gpu/drm/panel/panel-nec-nl8048hl11.c 
b/drivers/gpu/drm/panel/panel-nec-nl8048hl11.c
new file mode 100644
index 000000000000..99da665d9b4b
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-nec-nl8048hl11.c
@@ -0,0 +1,249 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * NEC NL8048HL11 Panel Driver
+ *
+ * Copyright (C) 2019 Texas Instruments Incorporated
+ *
+ * Based on the omapdrm-specific panel-nec-nl8048hl11 driver
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated
+ * Author: Erik Gilling <konk...@android.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/spi/spi.h>
+
+#include <drm/drm_connector.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct nl8048_device {
+       struct drm_panel panel;
+
+       struct spi_device *spi;
+       struct gpio_desc *reset_gpio;
+};
+
+#define to_nl8048_device(p) container_of(p, struct nl8048_device, panel)
+
+static int nl8048_write(struct nl8048_device *lcd, unsigned char addr,
+                       unsigned char value)
+{
+       u8 data[4] = { value, 0x01, addr, 0x00 };
+       int ret;
+
+       ret = spi_write(lcd->spi, data, sizeof(data));
+       if (ret)
+               dev_err(&lcd->spi->dev, "SPI write to %u failed: %d\n",
+                       addr, ret);
+
+       return ret;
+}
+
+static int nl8048_init(struct nl8048_device *lcd)
+{
+       static const struct {
+               unsigned char addr;
+               unsigned char data;
+       } nl8048_init_seq[] = {
+               {   3, 0x01 }, {   0, 0x00 }, {   1, 0x01 }, {   4, 0x00 },
+               {   5, 0x14 }, {   6, 0x24 }, {  16, 0xd7 }, {  17, 0x00 },
+               {  18, 0x00 }, {  19, 0x55 }, {  20, 0x01 }, {  21, 0x70 },
+               {  22, 0x1e }, {  23, 0x25 }, {  24, 0x25 }, {  25, 0x02 },
+               {  26, 0x02 }, {  27, 0xa0 }, {  32, 0x2f }, {  33, 0x0f },
+               {  34, 0x0f }, {  35, 0x0f }, {  36, 0x0f }, {  37, 0x0f },
+               {  38, 0x0f }, {  39, 0x00 }, {  40, 0x02 }, {  41, 0x02 },
+               {  42, 0x02 }, {  43, 0x0f }, {  44, 0x0f }, {  45, 0x0f },
+               {  46, 0x0f }, {  47, 0x0f }, {  48, 0x0f }, {  49, 0x0f },
+               {  50, 0x00 }, {  51, 0x02 }, {  52, 0x02 }, {  53, 0x02 },
+               {  80, 0x0c }, {  83, 0x42 }, {  84, 0x42 }, {  85, 0x41 },
+               {  86, 0x14 }, {  89, 0x88 }, {  90, 0x01 }, {  91, 0x00 },
+               {  92, 0x02 }, {  93, 0x0c }, {  94, 0x1c }, {  95, 0x27 },
+               {  98, 0x49 }, {  99, 0x27 }, { 102, 0x76 }, { 103, 0x27 },
+               { 112, 0x01 }, { 113, 0x0e }, { 114, 0x02 }, { 115, 0x0c },
+               { 118, 0x0c }, { 121, 0x30 }, { 130, 0x00 }, { 131, 0x00 },
+               { 132, 0xfc }, { 134, 0x00 }, { 136, 0x00 }, { 138, 0x00 },
+               { 139, 0x00 }, { 140, 0x00 }, { 141, 0xfc }, { 143, 0x00 },
+               { 145, 0x00 }, { 147, 0x00 }, { 148, 0x00 }, { 149, 0x00 },
+               { 150, 0xfc }, { 152, 0x00 }, { 154, 0x00 }, { 156, 0x00 },
+               { 157, 0x00 },
+       };
+
+       unsigned int i;
+       int ret;
+
+       for (i = 0; i < ARRAY_SIZE(nl8048_init_seq); ++i) {
+               ret = nl8048_write(lcd, nl8048_init_seq[i].addr,
+                                  nl8048_init_seq[i].data);
+               if (ret < 0)
+                       return ret;
+       }
+
+       udelay(20);
+
+       return nl8048_write(lcd, 2, 0x00);
+}
+
+static int nl8048_disable(struct drm_panel *panel)
+{
+       struct nl8048_device *lcd = to_nl8048_device(panel);
+
+       gpiod_set_value_cansleep(lcd->reset_gpio, 0);
+
+       return 0;
+}
+
+static int nl8048_enable(struct drm_panel *panel)
+{
+       struct nl8048_device *lcd = to_nl8048_device(panel);
+
+       gpiod_set_value_cansleep(lcd->reset_gpio, 1);
+
+       return 0;
+}
+
+static const struct drm_display_mode nl8048_mode = {
+       /*  NEC PIX Clock Ratings MIN:21.8MHz TYP:23.8MHz MAX:25.7MHz */
+       .clock  = 23800,
+       .hdisplay = 800,
+       .hsync_start = 800 + 6,
+       .hsync_end = 800 + 6 + 1,
+       .htotal = 800 + 6 + 1 + 4,
+       .vdisplay = 480,
+       .vsync_start = 480 + 3,
+       .vsync_end = 480 + 3 + 1,
+       .vtotal = 480 + 3 + 1 + 4,
+       .vrefresh = 60,
+       .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+       .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+};
+
+static int nl8048_get_modes(struct drm_panel *panel)
+{
+       struct drm_connector *connector = panel->connector;
+       struct drm_display_mode *mode;
+
+       mode = drm_mode_duplicate(panel->drm, &nl8048_mode);
+       if (!mode)
+               return -ENOMEM;
+
+       drm_mode_set_name(mode);
+       drm_mode_probed_add(connector, mode);
+
+       connector->display_info.width_mm = 89;
+       connector->display_info.height_mm = 53;
+       connector->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH
+                                         | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE
+                                         | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE;
+
+       return 1;
+}
+
+static const struct drm_panel_funcs nl8048_funcs = {
+       .disable = nl8048_disable,
+       .enable = nl8048_enable,
+       .get_modes = nl8048_get_modes,
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int nl8048_suspend(struct device *dev)
+{
+       struct nl8048_device *lcd = dev_get_drvdata(dev);
+
+       nl8048_write(lcd, 2, 0x01);
+       msleep(40);
+
+       return 0;
+}
+
+static int nl8048_resume(struct device *dev)
+{
+       struct nl8048_device *lcd = dev_get_drvdata(dev);
+
+       /* Reinitialize the panel. */
+       spi_setup(lcd->spi);
+       nl8048_write(lcd, 2, 0x00);
+       nl8048_init(lcd);
+
+       return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(nl8048_pm_ops, nl8048_suspend, nl8048_resume);
+#endif
+
+static int nl8048_probe(struct spi_device *spi)
+{
+       struct nl8048_device *lcd;
+       int ret;
+
+       lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
+       if (lcd == NULL)
+               return -ENOMEM;
+
+       spi_set_drvdata(spi, lcd);
+       lcd->spi = spi;
+
+       lcd->reset_gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
+       if (IS_ERR(lcd->reset_gpio)) {
+               dev_err(&spi->dev, "failed to parse reset gpio\n");
+               return PTR_ERR(lcd->reset_gpio);
+       }
+
+       spi->mode = SPI_MODE_0;
+       spi->bits_per_word = 32;
+
+       ret = spi_setup(spi);
+       if (ret < 0) {
+               dev_err(&spi->dev, "failed to setup SPI: %d\n", ret);
+               return ret;
+       }
+
+       ret = nl8048_init(lcd);
+       if (ret < 0)
+               return ret;
+
+       drm_panel_init(&lcd->panel);
+       lcd->panel.dev = &lcd->spi->dev;
+       lcd->panel.funcs = &nl8048_funcs;
+
+       return drm_panel_add(&lcd->panel);
+}
+
+static int nl8048_remove(struct spi_device *spi)
+{
+       struct nl8048_device *lcd = spi_get_drvdata(spi);
+
+       drm_panel_remove(&lcd->panel);
+       nl8048_disable(&lcd->panel);
+
+       return 0;
+}
+
+static const struct of_device_id nl8048_of_match[] = {
+       { .compatible = "nec,nl8048hl11", },
+       {},
+};
+
+MODULE_DEVICE_TABLE(of, nl8048_of_match);
+
+static struct spi_driver nl8048_driver = {
+       .probe          = nl8048_probe,
+       .remove         = nl8048_remove,
+       .driver         = {
+               .name   = "panel-nec-nl8048hl11",
+#ifdef CONFIG_PM_SLEEP
+               .pm     = &nl8048_pm_ops,
+#endif
+               .of_match_table = nl8048_of_match,
+       },
+};
+
+module_spi_driver(nl8048_driver);
+
+MODULE_ALIAS("spi:nec,nl8048hl11");
+MODULE_AUTHOR("Erik Gilling <konk...@android.com>");
+MODULE_DESCRIPTION("NEC-NL8048HL11 Driver");
+MODULE_LICENSE("GPL");
-- 
Regards,

Laurent Pinchart

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

Reply via email to