6b1072a789
- Use separated patches - Use new panel driver (with backlight support) - Battery fixes - Fix compass (AK8975) (not tested, only probing works, but sometimes doesn't - says "Unexpected device" - need to investigate that) - Touchkey is working + LED - Keyboard backlight + HALL for slideout detection
620 lines
17 KiB
Diff
620 lines
17 KiB
Diff
From 837ca6b151a2ffe19b622a22351ea4a19c1d2cfd Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Pawe=C5=82=20Chmiel?= <pawel.mikolaj.chmiel@gmail.com>
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Date: Fri, 25 Jan 2019 16:32:08 +0100
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Subject: [PATCH 02/34] drm/panel: Add driver for Samsung S6E63M0 panel
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This patch adds Samsung S6E63M0 AMOLED LCD panel driver, connected over
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spi. It's based on already removed, non dt s6e63m0 driver and
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panel-samsung-ld9040. It can be found for example in some of Samsung
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Aries based phones.
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Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
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Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
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---
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Changes from v2:
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- VIDEOMODE_HELPERS is not needed in Kconfig
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- Added help text to Kconfig
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- Remove unneeded videomode includes/fields
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- Add sentinel comment in s6e63m0_of_match struct
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- Handle errors during registration of backlight device. We shouldn't
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register panel if we fail to register backlight device
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- Added Reviewed-by
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Changes from v1:
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- Correct order of Kconfig/Makefile entry
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- Fix SPDX tag, so it matches value of MODULE_LICENSE
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- Remove inclusion of drmP.h
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- Fix code formatting
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- Use DRM_DEV_ERROR/DEBUG
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- Extract hardcoded values
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- Remove possibility to change gamma through sysfs, leaving only one
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gamma table values
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- Fix reset_gpio handling, so it'll be asserted in power_on and
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deasserted in power_off. Also do it before turning voltage on.
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- Disable backlight and enter sleep mode in disable callback.
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Previously it was done in unprepare
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- Enable display and backlight in enable callback. Previously it was
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done in prepare
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- Hardcode display timings and delays. Previously they were readed
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from device tree
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- We're using SPDX, so we don't need to have license body
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- Use MIPI_DCS_EXIT_SLEEP_MODE and MIPI_DCS_SET_DISPLAY_ON
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- Rename MAX_GAMMA_LEVEL to NUM_GAMMA_LEVELS
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- Ommit get_brightness callback
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- Use backlight_enable/disable API, like it's done in other panel
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drivers (for example panel-simple)
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- Make set_brightness called only from backlight api, like it's done
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in other panel drivers (for example panel-simple).
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- Reset gpio should be set to GPIOD_OUT_HIGH. It's declared as active
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low in device tree
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- Don't call power_off in remove callback
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Signed-off-by: Sergey Larin <cerg2010cerg2010@mail.ru>
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---
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drivers/gpu/drm/panel/Kconfig | 9 +
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drivers/gpu/drm/panel/Makefile | 1 +
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drivers/gpu/drm/panel/panel-samsung-s6e63m0.c | 517 ++++++++++++++++++
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3 files changed, 527 insertions(+)
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create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
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diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
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index 6020c30a33b3..1a2c1d756bd3 100644
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--- a/drivers/gpu/drm/panel/Kconfig
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+++ b/drivers/gpu/drm/panel/Kconfig
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@@ -140,6 +140,15 @@ config DRM_PANEL_SAMSUNG_S6E63J0X03
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depends on BACKLIGHT_CLASS_DEVICE
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select VIDEOMODE_HELPERS
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+config DRM_PANEL_SAMSUNG_S6E63M0
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+ tristate "Samsung S6E63M0 RGB/SPI panel"
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+ depends on OF
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+ depends on SPI
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+ depends on BACKLIGHT_CLASS_DEVICE
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+ help
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+ Say Y here if you want to enable support for Samsung s6e63m0
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+ AMOLED LCD panel.
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+
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config DRM_PANEL_SAMSUNG_S6E8AA0
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tristate "Samsung S6E8AA0 DSI video mode panel"
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depends on OF
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diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
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index 5ccaaa9d13af..fd6fbcf7808c 100644
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--- a/drivers/gpu/drm/panel/Makefile
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+++ b/drivers/gpu/drm/panel/Makefile
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@@ -14,6 +14,7 @@ obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63J0X03) += panel-samsung-s6e63j0x03.o
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+obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E63M0) += panel-samsung-s6e63m0.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
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obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o
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obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
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diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c b/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
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new file mode 100644
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index 000000000000..4312aa3e4386
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--- /dev/null
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+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63m0.c
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@@ -0,0 +1,517 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * S6E63M0 AMOLED LCD drm_panel driver.
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+ *
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+ * Copyright (C) 2019 Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
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+ * Derived from drivers/gpu/drm/panel-samsung-ld9040.c
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+ *
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+ * Andrzej Hajda <a.hajda@samsung.com>
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+ */
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+
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+#include <drm/drm_modes.h>
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+#include <drm/drm_panel.h>
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+#include <drm/drm_print.h>
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+
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+#include <linux/backlight.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/regulator/consumer.h>
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+#include <linux/spi/spi.h>
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+
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+#include <video/mipi_display.h>
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+
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+/* Manufacturer Command Set */
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+#define MCS_ELVSS_ON 0xb1
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+#define MCS_ACL_CTRL 0xc0
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+#define MCS_DISPLAY_CONDITION 0xf2
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+#define MCS_ETC_CONDITION 0xf6
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+#define MCS_PANEL_CONDITION 0xF8
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+#define MCS_GAMMA_CTRL 0xfa
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+
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+#define NUM_GAMMA_LEVELS 11
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+#define GAMMA_TABLE_COUNT 23
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+
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+#define DATA_MASK 0x100
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+
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+#define MAX_BRIGHTNESS (NUM_GAMMA_LEVELS - 1)
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+
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+/* array of gamma tables for gamma value 2.2 */
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+static u8 const s6e63m0_gamma_22[NUM_GAMMA_LEVELS][GAMMA_TABLE_COUNT] = {
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x78, 0xEC, 0x3D, 0xC8,
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+ 0xC2, 0xB6, 0xC4, 0xC7, 0xB6, 0xD5, 0xD7,
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+ 0xCC, 0x00, 0x39, 0x00, 0x36, 0x00, 0x51 },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x73, 0x4A, 0x3D, 0xC0,
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+ 0xC2, 0xB1, 0xBB, 0xBE, 0xAC, 0xCE, 0xCF,
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+ 0xC5, 0x00, 0x5D, 0x00, 0x5E, 0x00, 0x82 },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x70, 0x51, 0x3E, 0xBF,
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+ 0xC1, 0xAF, 0xB9, 0xBC, 0xAB, 0xCC, 0xCC,
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+ 0xC2, 0x00, 0x65, 0x00, 0x67, 0x00, 0x8D },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x6C, 0x54, 0x3A, 0xBC,
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+ 0xBF, 0xAC, 0xB7, 0xBB, 0xA9, 0xC9, 0xC9,
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+ 0xBE, 0x00, 0x71, 0x00, 0x73, 0x00, 0x9E },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x69, 0x54, 0x37, 0xBB,
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+ 0xBE, 0xAC, 0xB4, 0xB7, 0xA6, 0xC7, 0xC8,
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+ 0xBC, 0x00, 0x7B, 0x00, 0x7E, 0x00, 0xAB },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x66, 0x55, 0x34, 0xBA,
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+ 0xBD, 0xAB, 0xB1, 0xB5, 0xA3, 0xC5, 0xC6,
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+ 0xB9, 0x00, 0x85, 0x00, 0x88, 0x00, 0xBA },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x63, 0x53, 0x31, 0xB8,
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+ 0xBC, 0xA9, 0xB0, 0xB5, 0xA2, 0xC4, 0xC4,
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+ 0xB8, 0x00, 0x8B, 0x00, 0x8E, 0x00, 0xC2 },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x62, 0x54, 0x30, 0xB9,
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+ 0xBB, 0xA9, 0xB0, 0xB3, 0xA1, 0xC1, 0xC3,
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+ 0xB7, 0x00, 0x91, 0x00, 0x95, 0x00, 0xDA },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x66, 0x58, 0x34, 0xB6,
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+ 0xBA, 0xA7, 0xAF, 0xB3, 0xA0, 0xC1, 0xC2,
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+ 0xB7, 0x00, 0x97, 0x00, 0x9A, 0x00, 0xD1 },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x64, 0x56, 0x33, 0xB6,
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+ 0xBA, 0xA8, 0xAC, 0xB1, 0x9D, 0xC1, 0xC1,
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+ 0xB7, 0x00, 0x9C, 0x00, 0x9F, 0x00, 0xD6 },
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+ { MCS_GAMMA_CTRL, 0x00,
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+ 0x18, 0x08, 0x24, 0x5f, 0x50, 0x2d, 0xB6,
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+ 0xB9, 0xA7, 0xAd, 0xB1, 0x9f, 0xbe, 0xC0,
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+ 0xB5, 0x00, 0xa0, 0x00, 0xa4, 0x00, 0xdb },
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+};
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+
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+struct s6e63m0 {
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+ struct device *dev;
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+ struct drm_panel panel;
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+ struct backlight_device *bl_dev;
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+
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+ struct regulator_bulk_data supplies[2];
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+ struct gpio_desc *reset_gpio;
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+
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+ bool prepared;
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+ bool enabled;
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+
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+ /*
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+ * This field is tested by functions directly accessing bus before
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+ * transfer, transfer is skipped if it is set. In case of transfer
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+ * failure or unexpected response the field is set to error value.
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+ * Such construct allows to eliminate many checks in higher level
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+ * functions.
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+ */
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+ int error;
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+};
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+
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+static const struct drm_display_mode default_mode = {
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+ .clock = 25628,
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+ .hdisplay = 480,
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+ .hsync_start = 480 + 16,
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+ .hsync_end = 480 + 16 + 2,
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+ .htotal = 480 + 16 + 2 + 16,
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+ .vdisplay = 800,
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+ .vsync_start = 800 + 28,
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+ .vsync_end = 800 + 28 + 2,
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+ .vtotal = 800 + 28 + 2 + 1,
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+ .vrefresh = 60,
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+ .width_mm = 53,
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+ .height_mm = 89,
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+ .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
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+};
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+
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+static inline struct s6e63m0 *panel_to_s6e63m0(struct drm_panel *panel)
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+{
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+ return container_of(panel, struct s6e63m0, panel);
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+}
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+
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+static int s6e63m0_clear_error(struct s6e63m0 *ctx)
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+{
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+ int ret = ctx->error;
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+
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+ ctx->error = 0;
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+ return ret;
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+}
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+
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+static int s6e63m0_spi_write_word(struct s6e63m0 *ctx, u16 data)
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+{
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+ struct spi_device *spi = to_spi_device(ctx->dev);
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+ struct spi_transfer xfer = {
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+ .len = 2,
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+ .tx_buf = &data,
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+ };
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+ struct spi_message msg;
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+
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+ spi_message_init(&msg);
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+ spi_message_add_tail(&xfer, &msg);
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+
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+ return spi_sync(spi, &msg);
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+}
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+
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+static void s6e63m0_dcs_write(struct s6e63m0 *ctx, const u8 *data, size_t len)
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+{
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+ int ret = 0;
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+
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+ if (ctx->error < 0 || len == 0)
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+ return;
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+
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+ DRM_DEV_DEBUG(ctx->dev, "writing dcs seq: %*ph\n", (int)len, data);
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+ ret = s6e63m0_spi_write_word(ctx, *data);
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+
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+ while (!ret && --len) {
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+ ++data;
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+ ret = s6e63m0_spi_write_word(ctx, *data | DATA_MASK);
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+ }
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+
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+ if (ret) {
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+ DRM_DEV_ERROR(ctx->dev, "error %d writing dcs seq: %*ph\n", ret,
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+ (int)len, data);
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+ ctx->error = ret;
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+ }
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+
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+ usleep_range(300, 310);
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+}
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+
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+#define s6e63m0_dcs_write_seq_static(ctx, seq ...) \
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+ ({ \
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+ static const u8 d[] = { seq }; \
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+ s6e63m0_dcs_write(ctx, d, ARRAY_SIZE(d)); \
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+ })
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+
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+static void s6e63m0_brightness_set(struct s6e63m0 *ctx)
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+{
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+ int brightness = ctx->bl_dev->props.brightness;
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+
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+ /* disable and set new gamma */
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+ s6e63m0_dcs_write(ctx, s6e63m0_gamma_22[brightness],
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+ ARRAY_SIZE(s6e63m0_gamma_22[brightness]));
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+
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+ /* update gamma table. */
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+ s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_CTRL, 0x01);
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+}
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+
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+static void s6e63m0_init(struct s6e63m0 *ctx)
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+{
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+ s6e63m0_dcs_write_seq_static(ctx, MCS_PANEL_CONDITION,
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+ 0x01, 0x27, 0x27, 0x07, 0x07, 0x54, 0x9f,
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+ 0x63, 0x86, 0x1a, 0x33, 0x0d, 0x00, 0x00);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, MCS_DISPLAY_CONDITION,
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+ 0x02, 0x03, 0x1c, 0x10, 0x10);
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+ s6e63m0_dcs_write_seq_static(ctx, 0xf7,
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+ 0x03, 0x00, 0x00);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_CTRL,
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+ 0x00, 0x18, 0x08, 0x24, 0x64, 0x56, 0x33,
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+ 0xb6, 0xba, 0xa8, 0xac, 0xb1, 0x9d, 0xc1,
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+ 0xc1, 0xb7, 0x00, 0x9c, 0x00, 0x9f, 0x00,
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+ 0xd6);
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+ s6e63m0_dcs_write_seq_static(ctx, MCS_GAMMA_CTRL,
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+ 0x01);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, MCS_ETC_CONDITION,
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+ 0x00, 0x8c, 0x07);
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+ s6e63m0_dcs_write_seq_static(ctx, 0xb3,
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+ 0xc);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, 0xb5,
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+ 0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17,
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+ 0x13, 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b,
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+ 0x1a, 0x17, 0x2b, 0x26, 0x22, 0x20, 0x3a,
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+ 0x34, 0x30, 0x2c, 0x29, 0x26, 0x25, 0x23,
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+ 0x21, 0x20, 0x1e, 0x1e);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, 0xb6,
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+ 0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44,
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+ 0x44, 0x55, 0x55, 0x66, 0x66, 0x66, 0x66,
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+ 0x66, 0x66);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, 0xb7,
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+ 0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17,
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+ 0x13, 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b,
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+ 0x1a, 0x17, 0x2b, 0x26, 0x22, 0x20, 0x3a,
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+ 0x34, 0x30, 0x2c, 0x29, 0x26, 0x25, 0x23,
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+ 0x21, 0x20, 0x1e, 0x1e, 0x00, 0x00, 0x11,
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+ 0x22, 0x33, 0x44, 0x44, 0x44, 0x55, 0x55,
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+ 0x66, 0x66, 0x66, 0x66, 0x66, 0x66);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, 0xb9,
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+ 0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17,
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+ 0x13, 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b,
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+ 0x1a, 0x17, 0x2b, 0x26, 0x22, 0x20, 0x3a,
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+ 0x34, 0x30, 0x2c, 0x29, 0x26, 0x25, 0x23,
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+ 0x21, 0x20, 0x1e, 0x1e);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, 0xba,
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+ 0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44,
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+ 0x44, 0x55, 0x55, 0x66, 0x66, 0x66, 0x66,
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+ 0x66, 0x66);
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+
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+ s6e63m0_dcs_write_seq_static(ctx, 0xc1,
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+ 0x4d, 0x96, 0x1d, 0x00, 0x00, 0x01, 0xdf,
|
|
+ 0x00, 0x00, 0x03, 0x1f, 0x00, 0x00, 0x00,
|
|
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x06,
|
|
+ 0x09, 0x0d, 0x0f, 0x12, 0x15, 0x18);
|
|
+
|
|
+ s6e63m0_dcs_write_seq_static(ctx, 0xb2,
|
|
+ 0x10, 0x10, 0x0b, 0x05);
|
|
+
|
|
+ s6e63m0_dcs_write_seq_static(ctx, MCS_ACL_CTRL,
|
|
+ 0x01);
|
|
+
|
|
+ s6e63m0_dcs_write_seq_static(ctx, MCS_ELVSS_ON,
|
|
+ 0x0b);
|
|
+
|
|
+ s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
|
|
+}
|
|
+
|
|
+static int s6e63m0_power_on(struct s6e63m0 *ctx)
|
|
+{
|
|
+ int ret;
|
|
+
|
|
+ gpiod_set_value(ctx->reset_gpio, 0);
|
|
+ msleep(120);
|
|
+
|
|
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ msleep(25);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int s6e63m0_power_off(struct s6e63m0 *ctx)
|
|
+{
|
|
+ int ret;
|
|
+
|
|
+ ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ gpiod_set_value(ctx->reset_gpio, 1);
|
|
+ msleep(120);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int s6e63m0_disable(struct drm_panel *panel)
|
|
+{
|
|
+ struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
|
|
+
|
|
+ if (!ctx->enabled)
|
|
+ return 0;
|
|
+
|
|
+ backlight_disable(ctx->bl_dev);
|
|
+
|
|
+ s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
|
|
+ msleep(200);
|
|
+
|
|
+ ctx->enabled = false;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int s6e63m0_unprepare(struct drm_panel *panel)
|
|
+{
|
|
+ struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
|
|
+ int ret;
|
|
+
|
|
+ if (!ctx->prepared)
|
|
+ return 0;
|
|
+
|
|
+ s6e63m0_clear_error(ctx);
|
|
+
|
|
+ ret = s6e63m0_power_off(ctx);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ ctx->prepared = false;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int s6e63m0_prepare(struct drm_panel *panel)
|
|
+{
|
|
+ struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
|
|
+ int ret;
|
|
+
|
|
+ if (ctx->prepared)
|
|
+ return 0;
|
|
+
|
|
+ ret = s6e63m0_power_on(ctx);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ s6e63m0_init(ctx);
|
|
+
|
|
+ ret = s6e63m0_clear_error(ctx);
|
|
+
|
|
+ if (ret < 0)
|
|
+ s6e63m0_unprepare(panel);
|
|
+
|
|
+ ctx->prepared = true;
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static int s6e63m0_enable(struct drm_panel *panel)
|
|
+{
|
|
+ struct s6e63m0 *ctx = panel_to_s6e63m0(panel);
|
|
+
|
|
+ if (ctx->enabled)
|
|
+ return 0;
|
|
+
|
|
+ s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
|
|
+
|
|
+ backlight_enable(ctx->bl_dev);
|
|
+
|
|
+ ctx->enabled = true;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int s6e63m0_get_modes(struct drm_panel *panel)
|
|
+{
|
|
+ struct drm_connector *connector = panel->connector;
|
|
+ struct drm_display_mode *mode;
|
|
+
|
|
+ mode = drm_mode_duplicate(panel->drm, &default_mode);
|
|
+ if (!mode) {
|
|
+ DRM_ERROR("failed to add mode %ux%ux@%u\n",
|
|
+ default_mode.hdisplay, default_mode.vdisplay,
|
|
+ default_mode.vrefresh);
|
|
+ return -ENOMEM;
|
|
+ }
|
|
+
|
|
+ drm_mode_set_name(mode);
|
|
+
|
|
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
|
|
+ drm_mode_probed_add(connector, mode);
|
|
+
|
|
+ return 1;
|
|
+}
|
|
+
|
|
+static const struct drm_panel_funcs s6e63m0_drm_funcs = {
|
|
+ .disable = s6e63m0_disable,
|
|
+ .unprepare = s6e63m0_unprepare,
|
|
+ .prepare = s6e63m0_prepare,
|
|
+ .enable = s6e63m0_enable,
|
|
+ .get_modes = s6e63m0_get_modes,
|
|
+};
|
|
+
|
|
+static int s6e63m0_set_brightness(struct backlight_device *bd)
|
|
+{
|
|
+ struct s6e63m0 *ctx = bl_get_data(bd);
|
|
+
|
|
+ s6e63m0_brightness_set(ctx);
|
|
+
|
|
+ return s6e63m0_clear_error(ctx);
|
|
+}
|
|
+
|
|
+static const struct backlight_ops s6e63m0_backlight_ops = {
|
|
+ .update_status = s6e63m0_set_brightness,
|
|
+};
|
|
+
|
|
+static int s6e63m0_backlight_register(struct s6e63m0 *ctx)
|
|
+{
|
|
+ struct backlight_properties props = {
|
|
+ .type = BACKLIGHT_RAW,
|
|
+ .brightness = MAX_BRIGHTNESS,
|
|
+ .max_brightness = MAX_BRIGHTNESS
|
|
+ };
|
|
+ struct device *dev = ctx->dev;
|
|
+ int ret = 0;
|
|
+
|
|
+ ctx->bl_dev = devm_backlight_device_register(dev, "panel", dev, ctx,
|
|
+ &s6e63m0_backlight_ops,
|
|
+ &props);
|
|
+ if (IS_ERR(ctx->bl_dev)) {
|
|
+ ret = PTR_ERR(ctx->bl_dev);
|
|
+ DRM_DEV_ERROR(dev, "error registering backlight device (%d)\n",
|
|
+ ret);
|
|
+ }
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static int s6e63m0_probe(struct spi_device *spi)
|
|
+{
|
|
+ struct device *dev = &spi->dev;
|
|
+ struct s6e63m0 *ctx;
|
|
+ int ret;
|
|
+
|
|
+ ctx = devm_kzalloc(dev, sizeof(struct s6e63m0), GFP_KERNEL);
|
|
+ if (!ctx)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ spi_set_drvdata(spi, ctx);
|
|
+
|
|
+ ctx->dev = dev;
|
|
+ ctx->enabled = false;
|
|
+ ctx->prepared = false;
|
|
+
|
|
+ ctx->supplies[0].supply = "vdd3";
|
|
+ ctx->supplies[1].supply = "vci";
|
|
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
|
|
+ ctx->supplies);
|
|
+ if (ret < 0) {
|
|
+ DRM_DEV_ERROR(dev, "failed to get regulators: %d\n", ret);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
|
|
+ if (IS_ERR(ctx->reset_gpio)) {
|
|
+ DRM_DEV_ERROR(dev, "cannot get reset-gpios %ld\n",
|
|
+ PTR_ERR(ctx->reset_gpio));
|
|
+ return PTR_ERR(ctx->reset_gpio);
|
|
+ }
|
|
+
|
|
+ spi->bits_per_word = 9;
|
|
+ spi->mode = SPI_MODE_3;
|
|
+ ret = spi_setup(spi);
|
|
+ if (ret < 0) {
|
|
+ DRM_DEV_ERROR(dev, "spi setup failed.\n");
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ drm_panel_init(&ctx->panel);
|
|
+ ctx->panel.dev = dev;
|
|
+ ctx->panel.funcs = &s6e63m0_drm_funcs;
|
|
+
|
|
+ ret = s6e63m0_backlight_register(ctx);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ return drm_panel_add(&ctx->panel);
|
|
+}
|
|
+
|
|
+static int s6e63m0_remove(struct spi_device *spi)
|
|
+{
|
|
+ struct s6e63m0 *ctx = spi_get_drvdata(spi);
|
|
+
|
|
+ drm_panel_remove(&ctx->panel);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct of_device_id s6e63m0_of_match[] = {
|
|
+ { .compatible = "samsung,s6e63m0" },
|
|
+ { /* sentinel */ }
|
|
+};
|
|
+MODULE_DEVICE_TABLE(of, s6e63m0_of_match);
|
|
+
|
|
+static struct spi_driver s6e63m0_driver = {
|
|
+ .probe = s6e63m0_probe,
|
|
+ .remove = s6e63m0_remove,
|
|
+ .driver = {
|
|
+ .name = "panel-samsung-s6e63m0",
|
|
+ .of_match_table = s6e63m0_of_match,
|
|
+ },
|
|
+};
|
|
+module_spi_driver(s6e63m0_driver);
|
|
+
|
|
+MODULE_AUTHOR("Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>");
|
|
+MODULE_DESCRIPTION("s6e63m0 LCD Driver");
|
|
+MODULE_LICENSE("GPL v2");
|
|
--
|
|
2.20.1
|
|
|