Re: [PATCH v4 2/3] drm/panel: Add support for S6E3HA2 panel driver on TM2 board

4 Jan 2017

Hi Hoegeun,
I tested this patch on Exynos5433-TM2 board. It is well working
Tested-by: Chanwoo Choi cw00.choi@samsung.com
Regards,
Chanwoo Choi
On 2017년 01월 04일 15:58, Hoegeun Kwon wrote:
...
This patch add support for MIPI-DSI based S6E3HA2 AMOLED panel
driver. This panel has 1440x2560 resolution in 5.7-inch physical
panel in the TM2 device.
Signed-off-by: Donghwa Lee dh09.lee@samsung.com
Signed-off-by: Hyungwon Hwang human.hwang@samsung.com
Signed-off-by: Hoegeun Kwon hoegeun.kwon@samsung.com

.../bindings/display/panel/samsung,s6e3ha2.txt     |  40 ++
 drivers/gpu/drm/panel/Kconfig                      |   6 +
 drivers/gpu/drm/panel/Makefile                     |   1 +
 drivers/gpu/drm/panel/panel-samsung-s6e3ha2.c      | 741 +++++++++++++++++++++
 4 files changed, 788 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt
 create mode 100644 drivers/gpu/drm/panel/panel-samsung-s6e3ha2.c

diff --git a/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt
new file mode 100644
index 0000000..6879f51
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt
@@ -0,0 +1,40 @@
+Samsung S6E3HA2 5.7" 1440x2560 AMOLED panel



+Required properties:


compatible: "samsung,s6e3ha2"



reg: the virtual channel number of a DSI peripheral



vdd3-supply: I/O voltage supply



vci-supply: voltage supply for analog circuits



reset-gpios: a GPIO spec for the reset pin (active low)



enable-gpios: a GPIO spec for the panel enable pin (active high)



te-gpios: a GPIO spec for the tearing effect synchronization signal


gpio pin (active high)


+The device node can contain one 'port' child node with one child
+'endpoint' node, according to the bindings defined in [1]. This
+node should describe panel's video bus.



+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt



+Example:



+&dsi {

...

panel@0 {
compatible = "samsung,s6e3ha2";


reg = <0>;


vdd3-supply = <&ldo27_reg>;


vci-supply = <&ldo28_reg>;


reset-gpios = <&gpg0 0 GPIO_ACTIVE_LOW>;


enable-gpios = <&gpf1 5 GPIO_ACTIVE_HIGH>;


te-gpios = <&gpf1 3 GPIO_ACTIVE_HIGH>;



port {


	panel_in: endpoint {


		remote-endpoint = <&dsi_out>;


	};


};


};

+};



diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 62aba97..eea2902 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -52,6 +52,12 @@ config DRM_PANEL_PANASONIC_VVX10F034N00
     WUXGA (1920x1200) Novatek NT1397-based DSI panel as found in some
     Xperia Z2 tablets
+config DRM_PANEL_SAMSUNG_S6E3HA2

tristate "Samsung S6E3HA2 DSI video mode panel"
depends on OF
depends on  DRM_MIPI_DSI
select VIDEOMODE_HELPERS


config DRM_PANEL_SAMSUNG_S6E8AA0
   tristate "Samsung S6E8AA0 DSI video mode panel"
   depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index a5c7ec0..1d483b0 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -3,6 +3,7 @@ obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
 obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
 obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.o
 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
 obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e3ha2.c b/drivers/gpu/drm/panel/panel-samsung-s6e3ha2.c
new file mode 100644
index 0000000..8c5a1c2
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e3ha2.c
@@ -0,0 +1,741 @@
+/*


MIPI-DSI based s6e3ha2 AMOLED 5.7 inch panel driver.







Copyright (c) 2016 Samsung Electronics Co., Ltd.



Donghwa Lee dh09.lee@samsung.com



Hyungwon Hwang human.hwang@samsung.com



Hoegeun Kwon hoegeun.kwon@samsung.com







This program is free software; you can redistribute it and/or modify



it under the terms of the GNU General Public License version 2 as



published by the Free Software Foundation.


*/


+#include <drm/drmP.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+#include <linux/backlight.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>



+#define S6E3HA2_MIN_BRIGHTNESS		0
+#define S6E3HA2_MAX_BRIGHTNESS		100
+#define S6E3HA2_DEFAULT_BRIGHTNESS	80



+#define S6E3HA2_NUM_GAMMA_STEPS		46
+#define S6E3HA2_GAMMA_CMD_CNT		35
+#define S6E3HA2_VINT_STATUS_MAX		10



+static const u8 gamma_tbl[S6E3HA2_NUM_GAMMA_STEPS][S6E3HA2_GAMMA_CMD_CNT] = {

{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x82, 0x83,
 0x85, 0x88, 0x8b, 0x8b, 0x84, 0x88, 0x82, 0x82, 0x89, 0x86, 0x8c,


 0x94, 0x84, 0xb1, 0xaf, 0x8e, 0xcf, 0xad, 0xc9, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x84, 0x84,
 0x85, 0x87, 0x8b, 0x8a, 0x84, 0x88, 0x82, 0x82, 0x89, 0x86, 0x8a,


 0x93, 0x84, 0xb0, 0xae, 0x8e, 0xc9, 0xa8, 0xc5, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x8a, 0x8a, 0x84, 0x88, 0x81, 0x84, 0x8a, 0x88, 0x8a,


 0x91, 0x84, 0xb1, 0xae, 0x8b, 0xd5, 0xb2, 0xcc, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x8a, 0x8a, 0x84, 0x87, 0x81, 0x84, 0x8a, 0x87, 0x8a,


 0x91, 0x85, 0xae, 0xac, 0x8a, 0xc3, 0xa3, 0xc0, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x85, 0x85,
 0x86, 0x85, 0x88, 0x89, 0x84, 0x89, 0x82, 0x84, 0x87, 0x85, 0x8b,


 0x91, 0x88, 0xad, 0xab, 0x8a, 0xb7, 0x9b, 0xb6, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x89, 0x8a, 0x84, 0x89, 0x83, 0x83, 0x86, 0x84, 0x8b,


 0x90, 0x84, 0xb0, 0xae, 0x8b, 0xce, 0xad, 0xc8, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
 0x85, 0x87, 0x89, 0x8a, 0x83, 0x87, 0x82, 0x85, 0x88, 0x87, 0x89,


 0x8f, 0x84, 0xac, 0xaa, 0x89, 0xb1, 0x98, 0xaf, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x88, 0x89, 0x84, 0x88, 0x83, 0x82, 0x85, 0x84, 0x8c,


 0x91, 0x86, 0xac, 0xaa, 0x89, 0xc2, 0xa5, 0xbd, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x85, 0x87, 0x89, 0x8a, 0x83, 0x87, 0x82, 0x85, 0x88, 0x87, 0x88,


 0x8b, 0x82, 0xad, 0xaa, 0x8a, 0xc2, 0xa5, 0xbd, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x87, 0x89, 0x84, 0x88, 0x83, 0x82, 0x85, 0x84, 0x8a,


 0x8e, 0x84, 0xae, 0xac, 0x89, 0xda, 0xb7, 0xd0, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x85, 0x86, 0x87, 0x89, 0x84, 0x88, 0x83, 0x80, 0x83, 0x82, 0x8b,


 0x8e, 0x85, 0xac, 0xaa, 0x89, 0xc8, 0xaa, 0xc1, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x85, 0x86, 0x87, 0x89, 0x81, 0x85, 0x81, 0x84, 0x86, 0x84, 0x8c,


 0x8c, 0x84, 0xa9, 0xa8, 0x87, 0xa3, 0x92, 0xa1, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x85, 0x86, 0x87, 0x89, 0x84, 0x86, 0x83, 0x80, 0x83, 0x81, 0x8c,


 0x8d, 0x84, 0xaa, 0xaa, 0x89, 0xce, 0xaf, 0xc5, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x85, 0x86, 0x87, 0x89, 0x81, 0x83, 0x80, 0x83, 0x85, 0x85, 0x8c,


 0x8c, 0x84, 0xa8, 0xa8, 0x88, 0xb5, 0x9f, 0xb0, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x86, 0x86, 0x87, 0x88, 0x81, 0x83, 0x80, 0x83, 0x85, 0x85, 0x8c,


 0x8b, 0x84, 0xab, 0xa8, 0x86, 0xd4, 0xb4, 0xc9, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x86, 0x86, 0x87, 0x88, 0x81, 0x83, 0x80, 0x84, 0x84, 0x85, 0x8b,


 0x8a, 0x83, 0xa6, 0xa5, 0x84, 0xbb, 0xa4, 0xb3, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
 0x86, 0x85, 0x86, 0x86, 0x82, 0x85, 0x81, 0x82, 0x83, 0x84, 0x8e,


 0x8b, 0x83, 0xa4, 0xa3, 0x8a, 0xa1, 0x93, 0x9d, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x87, 0x87, 0x82, 0x85, 0x81, 0x82, 0x82, 0x84, 0x8e,


 0x8b, 0x83, 0xa4, 0xa2, 0x86, 0xc1, 0xa9, 0xb7, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x87, 0x87, 0x82, 0x85, 0x81, 0x82, 0x82, 0x84, 0x8d,


 0x89, 0x82, 0xa2, 0xa1, 0x84, 0xa7, 0x98, 0xa1, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x83, 0x83,
 0x85, 0x86, 0x87, 0x87, 0x82, 0x85, 0x81, 0x83, 0x83, 0x85, 0x8c,


 0x87, 0x7f, 0xa2, 0x9d, 0x88, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xbb, 0x00, 0xc5, 0x00, 0xb4, 0x87, 0x86, 0x86, 0x84, 0x83,
 0x86, 0x87, 0x87, 0x87, 0x80, 0x82, 0x7f, 0x86, 0x86, 0x88, 0x8a,


 0x84, 0x7e, 0x9d, 0x9c, 0x82, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xbd, 0x00, 0xc7, 0x00, 0xb7, 0x87, 0x85, 0x85, 0x84, 0x83,
 0x86, 0x86, 0x86, 0x88, 0x81, 0x83, 0x80, 0x83, 0x84, 0x85, 0x8a,


 0x85, 0x7e, 0x9c, 0x9b, 0x85, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xc0, 0x00, 0xca, 0x00, 0xbb, 0x87, 0x86, 0x85, 0x83, 0x83,
 0x85, 0x86, 0x86, 0x88, 0x81, 0x83, 0x80, 0x84, 0x85, 0x86, 0x89,


 0x83, 0x7d, 0x9c, 0x99, 0x87, 0x7b, 0x7b, 0x7c, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xc4, 0x00, 0xcd, 0x00, 0xbe, 0x87, 0x86, 0x85, 0x83, 0x83,
 0x86, 0x85, 0x85, 0x87, 0x81, 0x82, 0x80, 0x82, 0x82, 0x83, 0x8a,


 0x85, 0x7f, 0x9f, 0x9b, 0x86, 0xb4, 0xa1, 0xac, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xc7, 0x00, 0xd0, 0x00, 0xc2, 0x87, 0x85, 0x85, 0x83, 0x82,
 0x85, 0x85, 0x85, 0x86, 0x82, 0x83, 0x80, 0x82, 0x82, 0x84, 0x87,


 0x86, 0x80, 0x9e, 0x9a, 0x87, 0xa7, 0x98, 0xa1, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xca, 0x00, 0xd2, 0x00, 0xc5, 0x87, 0x85, 0x84, 0x82, 0x82,
 0x84, 0x85, 0x85, 0x86, 0x81, 0x82, 0x7f, 0x82, 0x82, 0x84, 0x88,


 0x86, 0x81, 0x9d, 0x98, 0x86, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xce, 0x00, 0xd6, 0x00, 0xca, 0x86, 0x85, 0x84, 0x83, 0x83,
 0x85, 0x84, 0x84, 0x85, 0x81, 0x82, 0x80, 0x81, 0x81, 0x82, 0x89,


 0x86, 0x81, 0x9c, 0x97, 0x86, 0xa7, 0x98, 0xa1, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xd1, 0x00, 0xd9, 0x00, 0xce, 0x86, 0x84, 0x83, 0x83, 0x82,
 0x85, 0x85, 0x85, 0x86, 0x81, 0x83, 0x81, 0x82, 0x82, 0x83, 0x86,


 0x83, 0x7f, 0x99, 0x95, 0x86, 0xbb, 0xa4, 0xb3, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xd4, 0x00, 0xdb, 0x00, 0xd1, 0x86, 0x85, 0x83, 0x83, 0x82,
 0x85, 0x84, 0x84, 0x85, 0x80, 0x83, 0x82, 0x80, 0x80, 0x81, 0x87,


 0x84, 0x81, 0x98, 0x93, 0x85, 0xae, 0x9c, 0xa8, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xd8, 0x00, 0xde, 0x00, 0xd6, 0x86, 0x84, 0x83, 0x81, 0x81,
 0x83, 0x85, 0x85, 0x85, 0x82, 0x83, 0x81, 0x81, 0x81, 0x83, 0x86,


 0x84, 0x80, 0x98, 0x91, 0x85, 0x7b, 0x7b, 0x7c, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xdc, 0x00, 0xe2, 0x00, 0xda, 0x85, 0x84, 0x83, 0x82, 0x82,
 0x84, 0x84, 0x84, 0x85, 0x81, 0x82, 0x82, 0x80, 0x80, 0x81, 0x83,


 0x82, 0x7f, 0x99, 0x93, 0x86, 0x94, 0x8b, 0x92, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xdf, 0x00, 0xe5, 0x00, 0xde, 0x85, 0x84, 0x82, 0x82, 0x82,
 0x84, 0x83, 0x83, 0x84, 0x81, 0x81, 0x80, 0x83, 0x82, 0x84, 0x82,


 0x81, 0x7f, 0x99, 0x92, 0x86, 0x7b, 0x7b, 0x7c, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
 0x82, 0x83, 0x83, 0x84, 0x80, 0x81, 0x80, 0x83, 0x83, 0x84, 0x80,


 0x81, 0x7c, 0x99, 0x92, 0x87, 0xa1, 0x93, 0x9d, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x85, 0x84, 0x83, 0x81, 0x81,
 0x82, 0x82, 0x82, 0x83, 0x80, 0x81, 0x80, 0x81, 0x80, 0x82, 0x83,


 0x82, 0x80, 0x91, 0x8d, 0x83, 0x9a, 0x90, 0x96, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
 0x82, 0x83, 0x83, 0x84, 0x80, 0x81, 0x80, 0x81, 0x80, 0x82, 0x83,


 0x81, 0x7f, 0x91, 0x8c, 0x82, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
 0x82, 0x83, 0x83, 0x83, 0x82, 0x82, 0x81, 0x81, 0x80, 0x82, 0x82,


 0x82, 0x7f, 0x94, 0x89, 0x84, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
 0x82, 0x83, 0x83, 0x83, 0x82, 0x82, 0x81, 0x81, 0x80, 0x82, 0x83,


 0x82, 0x7f, 0x91, 0x85, 0x81, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
 0x82, 0x83, 0x83, 0x83, 0x80, 0x80, 0x7f, 0x83, 0x82, 0x84, 0x83,


 0x82, 0x7f, 0x90, 0x84, 0x81, 0x9a, 0x90, 0x96, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x80, 0x80,
 0x82, 0x83, 0x83, 0x83, 0x80, 0x80, 0x7f, 0x80, 0x80, 0x81, 0x81,


 0x82, 0x83, 0x7e, 0x80, 0x7c, 0xa4, 0x97, 0x9f, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xe9, 0x00, 0xec, 0x00, 0xe8, 0x84, 0x83, 0x82, 0x81, 0x81,
 0x82, 0x82, 0x82, 0x83, 0x7f, 0x7f, 0x7f, 0x81, 0x80, 0x82, 0x83,


 0x83, 0x84, 0x79, 0x7c, 0x79, 0xb1, 0xa0, 0xaa, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xed, 0x00, 0xf0, 0x00, 0xec, 0x83, 0x83, 0x82, 0x80, 0x80,
 0x81, 0x82, 0x82, 0x82, 0x7f, 0x7f, 0x7e, 0x81, 0x81, 0x82, 0x80,


 0x81, 0x81, 0x84, 0x84, 0x83, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xf1, 0x00, 0xf4, 0x00, 0xf1, 0x83, 0x82, 0x82, 0x80, 0x80,
 0x81, 0x82, 0x82, 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x81, 0x7d,


 0x7e, 0x7f, 0x84, 0x84, 0x83, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xf6, 0x00, 0xf7, 0x00, 0xf5, 0x82, 0x82, 0x81, 0x80, 0x80,
 0x80, 0x82, 0x82, 0x82, 0x80, 0x80, 0x80, 0x7f, 0x7f, 0x7f, 0x82,


 0x82, 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x00, 0xfa, 0x00, 0xfb, 0x00, 0xfa, 0x81, 0x81, 0x81, 0x80, 0x80,
 0x80, 0x82, 0x82, 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,


 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80,
 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,


 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 },


{ 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80,
 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,


 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,


 0x00, 0x00 }



+};



+unsigned char vint_table[S6E3HA2_VINT_STATUS_MAX] = {

0x18, 0x19, 0x1a, 0x1b, 0x1c,
0x1d, 0x1e, 0x1f, 0x20, 0x21

+};



+struct s6e3ha2 {

struct device *dev;
struct drm_panel panel;
struct backlight_device *bl_dev;

struct regulator_bulk_data supplies[2];
struct gpio_desc *reset_gpio;
struct gpio_desc *enable_gpio;

/* This field is tested by functions directly accessing DSI bus before
* transfer, transfer is skipped if it is set. In case of transfer


* failure or unexpected response the field is set to error value.


* Such construct allows to eliminate many checks in higher level


* functions.


*/


int error;

+};



+static int  s6e3ha2_clear_error(struct s6e3ha2 *ctx)
+{

int ret = ctx->error;

ctx->error = 0;
return ret;

+}



+static void s6e3ha2_dcs_write(struct s6e3ha2 *ctx, const void *data, size_t len)
+{

struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
ssize_t ret;

if (ctx->error < 0)
return;



ret = mipi_dsi_dcs_write_buffer(dsi, data, len);
if (ret < 0) {
dev_err(ctx->dev, "error %zd writing dcs seq: %*ph\n",


				ret, (int)len, data);


ctx->error = ret;


}

+}



+#define s6e3ha2_dcs_write_seq_static(ctx, seq...) do {	\

static const u8 d[] = { seq };			\
s6e3ha2_dcs_write(ctx, d, ARRAY_SIZE(d));	\

+} while (0)



+static void s6e3ha2_test_key_on_f0(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a);

+}



+static void s6e3ha2_test_key_off_f0(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xf0, 0xa5, 0xa5);

+}



+static void s6e3ha2_test_key_on_fc(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xfc, 0x5a, 0x5a);

+}



+static void s6e3ha2_test_key_off_fc(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xfc, 0xa5, 0xa5);

+}



+static void s6e3ha2_single_dsi_set(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xf2, 0x67);
s6e3ha2_dcs_write_seq_static(ctx, 0xf9, 0x09);

+}



+static void s6e3ha2_freq_calibration(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xfd, 0x1c);
s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x20, 0x39);
s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0xa0);
s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x20);
s6e3ha2_dcs_write_seq_static(ctx, 0xce, 0x03, 0x3b, 0x12, 0x62,
0x40, 0x80, 0xc0, 0x28, 0x28, 0x28, 0x28, 0x39, 0xc5);



+}



+static void s6e3ha2_aor_control(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb2, 0x03, 0x10);

+}



+static void s6e3ha2_caps_elvss_set(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb6, 0x9c, 0x0a);

+}



+static void s6e3ha2_acl_off(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0x55, 0x00);

+}



+static void s6e3ha2_acl_off_opr(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb5, 0x40);

+}



+static void s6e3ha2_test_global(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x07);

+}



+static void s6e3ha2_test(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb8, 0x19);

+}



+static void s6e3ha2_touch_hsync_on1(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx,
	0xbd, 0x33, 0x11, 0x02, 0x16, 0x02, 0x16);



+}



+static void s6e3ha2_pentile_control(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xc0, 0x00, 0x00, 0xd8, 0xd8);

+}



+static void s6e3ha2_poc_global(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x20);

+}



+static void s6e3ha2_poc_setting(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x08);

+}



+static void s6e3ha2_pcd_set_off(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xcc, 0x40, 0x51);

+}



+static void s6e3ha2_err_fg_set(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xed, 0x44);

+}



+static void s6e3ha2_hbm_off(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0x53, 0x00);

+}



+static void s6e3ha2_te_start_setting(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xb9, 0x10, 0x09, 0xff, 0x00, 0x09);

+}



+static void s6e3ha2_gamma_update(struct s6e3ha2 *ctx)
+{

s6e3ha2_dcs_write_seq_static(ctx, 0xf7, 0x03);
ndelay(100); /* need for 100ns delay */
s6e3ha2_dcs_write_seq_static(ctx, 0xf7, 0x00);

+}



+static int s6e3ha2_get_brightness(struct backlight_device *bl_dev)
+{

return bl_dev->props.brightness;

+}



+static void s6e3ha2_set_vint(struct s6e3ha2 *ctx)
+{

struct backlight_device *bl_dev = ctx->bl_dev;
unsigned int brightness = bl_dev->props.brightness;
unsigned char data[] = { 0xf4, 0x8b,
	vint_table[brightness * (S6E3HA2_VINT_STATUS_MAX - 1) /


	S6E3HA2_MAX_BRIGHTNESS] };



s6e3ha2_dcs_write(ctx, data, 3);

+}



+static unsigned int s6e3ha2_get_brightness_index(unsigned int brightness)
+{

return (brightness * (S6E3HA2_NUM_GAMMA_STEPS - 1)) /
S6E3HA2_MAX_BRIGHTNESS;



+}



+static int s6e3ha2_update_gamma(struct s6e3ha2 *ctx, unsigned int brightness)
+{

struct backlight_device *bl_dev = ctx->bl_dev;
unsigned int index = s6e3ha2_get_brightness_index(brightness);
u8 data[S6E3HA2_GAMMA_CMD_CNT + 1] = { 0xca, };

memcpy(data + 1, gamma_tbl + index, S6E3HA2_GAMMA_CMD_CNT);
s6e3ha2_dcs_write(ctx, data, ARRAY_SIZE(data));

s6e3ha2_gamma_update(ctx);
bl_dev->props.brightness = brightness;

return 0;

+}



+static int s6e3ha2_set_brightness(struct backlight_device *bl_dev)
+{

struct s6e3ha2 *ctx = (struct s6e3ha2 *)bl_get_data(bl_dev);
unsigned int brightness = bl_dev->props.brightness;

if (brightness < S6E3HA2_MIN_BRIGHTNESS ||
brightness > bl_dev->props.max_brightness) {


dev_err(ctx->dev, "Invalid brightness: %u\n", brightness);


return -EINVAL;


}

if (bl_dev->props.power > FB_BLANK_NORMAL)
return -EPERM;



s6e3ha2_test_key_on_f0(ctx);
s6e3ha2_update_gamma(ctx, brightness);
s6e3ha2_aor_control(ctx);
s6e3ha2_set_vint(ctx);
s6e3ha2_test_key_off_f0(ctx);

return ctx->error;

+}



+static const struct backlight_ops s6e3ha2_bl_ops = {

.get_brightness = s6e3ha2_get_brightness,
.update_status = s6e3ha2_set_brightness,

+};



+static void s6e3ha2_panel_init(struct s6e3ha2 *ctx)
+{

struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);

mipi_dsi_dcs_exit_sleep_mode(dsi);
usleep_range(5000, 6000);

s6e3ha2_test_key_on_f0(ctx);
s6e3ha2_single_dsi_set(ctx);
s6e3ha2_test_key_on_fc(ctx);
s6e3ha2_freq_calibration(ctx);
s6e3ha2_test_key_off_fc(ctx);
s6e3ha2_test_key_off_f0(ctx);

+}



+static int s6e3ha2_power_off(struct s6e3ha2 *ctx)
+{

return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);

+}



+static int s6e3ha2_disable(struct drm_panel *panel)
+{

struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);

mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ctx->error != 0)
goto err;



mipi_dsi_dcs_set_display_off(dsi);
if (ctx->error != 0)
goto err;



msleep(40);
ctx->bl_dev->props.power = FB_BLANK_NORMAL;

return 0;

+err:

return ctx->error;

+}



+static int s6e3ha2_unprepare(struct drm_panel *panel)
+{

struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
int ret;

ret = s6e3ha2_clear_error(ctx);
if (!ret)
ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;



return s6e3ha2_power_off(ctx);

+}



+static int s6e3ha2_power_on(struct s6e3ha2 *ctx)
+{

int ret;

ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
if (ret < 0)
return ret;



msleep(120);

gpiod_set_value(ctx->enable_gpio, 0);
usleep_range(5000, 6000);
gpiod_set_value(ctx->enable_gpio, 1);

gpiod_set_value(ctx->reset_gpio, 1);
usleep_range(5000, 6000);
gpiod_set_value(ctx->reset_gpio, 0);
usleep_range(5000, 6000);

return 0;

+}
+static int s6e3ha2_prepare(struct drm_panel *panel)
+{

struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
int ret;

ret = s6e3ha2_power_on(ctx);
if (ret < 0)
return ret;



s6e3ha2_panel_init(ctx);

ret = s6e3ha2_clear_error(ctx);
if (ret < 0) {
s6e3ha2_power_off(ctx);


return ret;


}

ctx->bl_dev->props.power = FB_BLANK_NORMAL;

return 0;

+}



+static int s6e3ha2_enable(struct drm_panel *panel)
+{

struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);

/* common setting */
mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);

s6e3ha2_test_key_on_f0(ctx);
s6e3ha2_test_key_on_fc(ctx);
s6e3ha2_touch_hsync_on1(ctx);
s6e3ha2_pentile_control(ctx);
s6e3ha2_poc_global(ctx);
s6e3ha2_poc_setting(ctx);
s6e3ha2_test_key_off_fc(ctx);

/* pcd setting off for TB */
s6e3ha2_pcd_set_off(ctx);
s6e3ha2_err_fg_set(ctx);
s6e3ha2_te_start_setting(ctx);

/* brightness setting */
s6e3ha2_set_brightness(ctx->bl_dev);
s6e3ha2_aor_control(ctx);
s6e3ha2_caps_elvss_set(ctx);
s6e3ha2_gamma_update(ctx);
s6e3ha2_acl_off(ctx);
s6e3ha2_acl_off_opr(ctx);
s6e3ha2_hbm_off(ctx);

/* elvss temp compensation */
s6e3ha2_test_global(ctx);
s6e3ha2_test(ctx);
s6e3ha2_test_key_off_f0(ctx);

mipi_dsi_dcs_set_display_on(dsi);
if (ctx->error != 0)
return ctx->error;



ctx->bl_dev->props.power = FB_BLANK_UNBLANK;

return 0;

+}



+static const struct drm_display_mode default_mode = {

.clock = 14874,
.hdisplay = 1440,
.hsync_start = 1440 + 1,
.hsync_end = 1440 + 1 + 1,
.htotal = 1440 + 1 + 1 + 1,
.vdisplay = 2560,
.vsync_start = 2560 + 1,
.vsync_end = 2560 + 1 + 1,
.vtotal = 2560 + 1 + 1 + 15,
.vrefresh = 60,
.flags = 0,

+};



+static int s6e3ha2_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 create a new display mode\n");


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);

connector->display_info.width_mm = 71;
connector->display_info.height_mm = 125;

return 1;

+}



+static const struct drm_panel_funcs s6e3ha2_drm_funcs = {

.disable = s6e3ha2_disable,
.unprepare = s6e3ha2_unprepare,
.prepare = s6e3ha2_prepare,
.enable = s6e3ha2_enable,
.get_modes = s6e3ha2_get_modes,

+};



+static int s6e3ha2_probe(struct mipi_dsi_device *dsi)
+{

struct device *dev = &dsi->dev;
struct s6e3ha2 *ctx;
int ret;

ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;



mipi_dsi_set_drvdata(dsi, ctx);

ctx->dev = dev;

dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS;

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) {
dev_err(dev, "failed to get regulators: %d\n", ret);


return ret;


}

ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(ctx->reset_gpio)) {
dev_err(dev, "cannot get reset-gpios %ld\n",


	PTR_ERR(ctx->reset_gpio));


return PTR_ERR(ctx->reset_gpio);


}

ctx->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->enable_gpio)) {
dev_err(dev, "cannot get enable-gpios %ld\n",


	PTR_ERR(ctx->enable_gpio));


return PTR_ERR(ctx->enable_gpio);


}

ctx->bl_dev = backlight_device_register("s6e3ha2", dev, ctx,
				&s6e3ha2_bl_ops, NULL);


if (IS_ERR(ctx->bl_dev)) {
dev_err(dev, "failed to register backlight device\n");


return PTR_ERR(ctx->bl_dev);


}

ctx->bl_dev->props.max_brightness = S6E3HA2_MAX_BRIGHTNESS;
ctx->bl_dev->props.brightness = S6E3HA2_DEFAULT_BRIGHTNESS;
ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;

drm_panel_init(&ctx->panel);
ctx->panel.dev = dev;
ctx->panel.funcs = &s6e3ha2_drm_funcs;

ret = drm_panel_add(&ctx->panel);
if (ret < 0)
goto unregister_backlight;



ret = mipi_dsi_attach(dsi);
if (ret < 0)
goto remove_panel;



return ret;


+remove_panel:

drm_panel_remove(&ctx->panel);


+unregister_backlight:

backlight_device_unregister(ctx->bl_dev);

return ret;

+}



+static int s6e3ha2_remove(struct mipi_dsi_device *dsi)
+{

struct s6e3ha2 *ctx = mipi_dsi_get_drvdata(dsi);

mipi_dsi_detach(dsi);
drm_panel_remove(&ctx->panel);
backlight_device_unregister(ctx->bl_dev);

return 0;

+}



+static const struct of_device_id s6e3ha2_of_match[] = {

{ .compatible = "samsung,s6e3ha2" },
{ }

+};
+MODULE_DEVICE_TABLE(of, s6e3ha2_of_match);



+static struct mipi_dsi_driver s6e3ha2_driver = {

.probe = s6e3ha2_probe,
.remove = s6e3ha2_remove,
.driver = {
.name = "panel-samsung-s6e3ha2",


.of_match_table = s6e3ha2_of_match,


},

+};
+module_mipi_dsi_driver(s6e3ha2_driver);



+MODULE_AUTHOR("Donghwa Lee dh09.lee@samsung.com");
+MODULE_AUTHOR("Hyungwon Hwang human.hwang@samsung.com");
+MODULE_AUTHOR("Hoegeun Kwon hoegeun.kwon@samsung.com");
+MODULE_DESCRIPTION("MIPI-DSI based s6e3ha2 AMOLED Panel Driver");
+MODULE_LICENSE("GPL v2");

    

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Re: [PATCH v4 2/3] drm/panel: Add support for S6E3HA2 panel driver on TM2 board