From: Donghwa Lee <dh09.lee@xxxxxxxxxxx>
This patch adds MIPI-DSI based S6E3HA2 panel driver. This panel has
1440x2560 resolution in 5.7-inch physical panel.
Signed-off-by: Donghwa Lee <dh09.lee@xxxxxxxxxxx>
Signed-off-by: Hyungwon Hwang <human.hwang@xxxxxxxxxxx>
Cc: Inki Dae <inki.dae@xxxxxxxxxxx>
Cc: Sangbae Lee <sangbae90.lee@xxxxxxxxxxx>
---
Changes for v2:
- Fix errata in documentation and source code comments
Changes for v3:
- Remove the term LCD to clarify the sort of this panel
- Rename lcd-en-gpios to panel-en-gpios to clarify the sort of this panel
- Fix errata in documentation and source code comments
.../devicetree/bindings/panel/samsung,s6e3ha2.txt | 49 ++
drivers/gpu/drm/panel/Kconfig | 6 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-s6e3ha2.c | 513 +++++++++++++++++++++
4 files changed, 569 insertions(+)
create mode 100644 Documentation/devicetree/bindings/panel/samsung,s6e3ha2.txt
create mode 100644 drivers/gpu/drm/panel/panel-s6e3ha2.c
diff --git a/Documentation/devicetree/bindings/panel/samsung,s6e3ha2.txt b/Documentation/devicetree/bindings/panel/samsung,s6e3ha2.txt
new file mode 100644
index 0000000..5210926
--- /dev/null
+++ b/Documentation/devicetree/bindings/panel/samsung,s6e3ha2.txt
@@ -0,0 +1,49 @@
+Samsung S6E3HA2 5.7" 1440x2560 AMOLED panel
+
+Required properties:
+ - compatible: "samsung,s6e3ha2"
+ - reg: the virtual channel number of a DSI peripheral
+ - vdd3-supply: core voltage supply
+ - vci-supply: voltage supply for analog circuits
+ - reset-gpios: a GPIO spec for the reset pin
+ - panel-en-gpios: a GPIO spec for the panel enable pin
+ - te-gpios: a GPIO spec for the tearing effect synchronization signal gpio pin
+
+Optional properties:
+ - display-timings: timings for the connected panel as described by [1]
+ - panel-width-mm: physical panel width [mm]
+ - panel-height-mm: physical panel height [mm]
+
+The device node can contain one 'port' child node with one child
+'endpoint' node, according to the bindings defined in [2]. This
+node should describe panel's video bus.
+
+[1]: Documentation/devicetree/bindings/video/display-timing.txt
+[2]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+
+panel@0 {
+ compatible = "samsung,s6e3ha2";
+ reg = <0>;
+ vdd3-supply = <&ldo27_reg>;
+ vci-supply = <&ldo28_reg>;
+ reset-gpios = <&gpg0 0 0>;
+ panel-en-gpios = <&gpf1 5 0>;
+ te-gpios = <&gpf1 3 1>;
+ panel-width-mm = <71>;
+ panel-height-mm = <125>;
+
+ display-timings {
+ timing-0 {
+ clock-frequency = <0>;
+ hactive = <1440>;
+ vactive = <2560>;
+ hfront-porch = <1>;
+ hback-porch = <1>;
+ hsync-len = <1>;
+ vfront-porch = <1>;
+ vback-porch = <15>;
+ vsync-len = <1>;
+ };
+ };
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index dec60b2..451b5f3 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -46,4 +46,10 @@ config DRM_PANEL_S6E63J0X03
select DRM_MIPI_DSI
select VIDEOMODE_HELPERS
+config DRM_PANEL_S6E3HA2
+ tristate "S6E3HA2 DSI video mode panel"
+ depends on OF
+ select DRM_MIPI_DSI
+ select VIDEOMODE_HELPERS
+
endmenu
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 6467be7..7bd7b84 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_DRM_PANEL_LD9040) += panel-ld9040.o
obj-$(CONFIG_DRM_PANEL_S6E8AA0) += panel-s6e8aa0.o
obj-$(CONFIG_DRM_PANEL_S6E63J0X03) += panel-s6e63j0x03.o
obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
+obj-$(CONFIG_DRM_PANEL_S6E3HA2) += panel-s6e3ha2.o
diff --git a/drivers/gpu/drm/panel/panel-s6e3ha2.c b/drivers/gpu/drm/panel/panel-s6e3ha2.c
new file mode 100644
index 0000000..af22bdc
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-s6e3ha2.c
@@ -0,0 +1,513 @@
+/*
+ * MIPI-DSI based s6e3ha2 AMOLED 5.7 inch panel driver.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Donghwa Lee <dh09.lee@xxxxxxxxxxx>
+ *
+ * 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/of_gpio.h>
+#include <linux/gpio.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+struct s6e3ha2 {
+ struct device *dev;
+ struct drm_panel panel;
+
+ struct regulator_bulk_data supplies[2];
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *panel_en_gpio;
+ struct videomode vm;
+ u32 width_mm;
+ u32 height_mm;
+
+ /* 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 inline struct s6e3ha2 *panel_to_s6e3ha2(struct drm_panel *panel)
+{
+ return container_of(panel, struct s6e3ha2, panel);
+}
+
+static void s6e3ha2_clear_error(struct s6e3ha2 *ctx)
+{
+ ctx->error = 0;
+}
+
+static void s6e3ha2_dcs_write(struct s6e3ha2 *ctx, const u8 cmd,
+ 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(dsi, cmd, 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, cmd, seq...) \
+({\
+ static const u8 c = cmd;\
+ static const u8 d[] = { seq };\
+ s6e3ha2_dcs_write(ctx, c, d, ARRAY_SIZE(d));\
+})
+
+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_set1(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xf2, 0x67);
+}
+
+static void s6e3ha2_single_dsi_set2(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xf9, 0x09);
+}
+
+static void s6e3ha2_calibration_set1(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x02);
+}
+
+static void s6e3ha2_calibration_set2(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xf2, 0xc5);
+}
+
+static void s6e3ha2_calibration_set3(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xfd, 0x1c);
+}
+
+static void s6e3ha2_calibration_set4(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x01);
+}
+
+static void s6e3ha2_calibration_set5(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x39);
+}
+
+static void s6e3ha2_calibration_set6(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0xa0);
+}
+
+static void s6e3ha2_calibration_set7(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x20);
+}
+
+static void s6e3ha2_calibration_set8(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xce, 0x03, 0x3b, 0x14, 0x6d);
+}
+
+static void s6e3ha2_calibration_set9(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x0c);
+}
+
+static void s6e3ha2_calibration_set10(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xce, 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_on(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx,
+ 0xbd, 0x11, 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_setting(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, 0xc3, 0xc0, 0x00, 0x33);
+}
+
+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);
+}
+
+static void s6e3ha2_brightness_set(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx,
+ 0xca, 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, 0x80, 0x80, 0x80, 0x00, 0x00);
+}
+
+static void s6e3ha2_panel_init(struct s6e3ha2 *ctx)
+{
+ s6e3ha2_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+
+ usleep_range(5000, 6000);
+
+ s6e3ha2_test_key_on_f0(ctx);
+ s6e3ha2_single_dsi_set1(ctx);
+ s6e3ha2_single_dsi_set2(ctx);
+
+ /* calibration enable */
+ s6e3ha2_test_key_on_fc(ctx);
+ s6e3ha2_calibration_set1(ctx);
+ s6e3ha2_calibration_set2(ctx);
+ s6e3ha2_calibration_set3(ctx);
+ s6e3ha2_calibration_set4(ctx);
+ s6e3ha2_calibration_set5(ctx);
+ s6e3ha2_calibration_set6(ctx);
+ s6e3ha2_calibration_set7(ctx);
+ s6e3ha2_calibration_set8(ctx);
+ s6e3ha2_calibration_set9(ctx);
+ s6e3ha2_calibration_set10(ctx);
+
+ msleep(120);
+
+ /* common setting */
+ s6e3ha2_dcs_write_seq_static(ctx, MIPI_DCS_SET_TEAR_ON);
+
+ s6e3ha2_touch_hsync_on(ctx);
+ s6e3ha2_pentile_control(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_brightness_set(ctx);
+ 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);
+ s6e3ha2_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
+}
+
+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)
+{
+ return 0;
+}
+
+static int s6e3ha2_unprepare(struct drm_panel *panel)
+{
+ struct s6e3ha2 *ctx = panel_to_s6e3ha2(panel);
+
+ s6e3ha2_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
+ s6e3ha2_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
+ msleep(40);
+
+ s6e3ha2_clear_error(ctx);
+
+ 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(25);
+
+ gpiod_set_value(ctx->panel_en_gpio, 0);
+ usleep_range(5000, 6000);
+ gpiod_set_value(ctx->panel_en_gpio, 1);
+
+ gpiod_set_value(ctx->reset_gpio, 1);
+ usleep_range(5000, 6000);
+ gpiod_set_value(ctx->reset_gpio, 0);
+ usleep_range(5000, 6000);
+ gpiod_set_value(ctx->reset_gpio, 1);
+ usleep_range(5000, 6000);
+
+ return 0;
+}
+static int s6e3ha2_prepare(struct drm_panel *panel)
+{
+ struct s6e3ha2 *ctx = panel_to_s6e3ha2(panel);
+ int ret;
+
+ ret = s6e3ha2_power_on(ctx);
+ if (ret < 0)
+ return ret;
+
+ s6e3ha2_panel_init(ctx);
+ if (ctx->error < 0)
+ s6e3ha2_unprepare(panel);
+
+ return ret;
+}
+
+static int s6e3ha2_enable(struct drm_panel *panel)
+{
+ return 0;
+}
+
+static int s6e3ha2_get_modes(struct drm_panel *panel)
+{
+ struct drm_connector *connector = panel->connector;
+ struct s6e3ha2 *ctx = panel_to_s6e3ha2(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_create(connector->dev);
+ if (!mode) {
+ DRM_ERROR("failed to create a new display mode\n");
+ return 0;
+ }
+
+ drm_display_mode_from_videomode(&ctx->vm, mode);
+ mode->width_mm = ctx->width_mm;
+ mode->height_mm = ctx->height_mm;
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ 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_parse_dt(struct s6e3ha2 *ctx)
+{
+ struct device *dev = ctx->dev;
+ struct device_node *np = dev->of_node;
+ int ret;
+
+ ret = of_get_videomode(np, &ctx->vm, 0);
+ if (ret < 0)
+ return ret;
+
+ of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);
+ of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);
+
+ return 0;
+}
+
+static int s6e3ha2_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct s6e3ha2 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(struct s6e3ha2), 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;
+
+ ret = s6e3ha2_parse_dt(ctx);
+ if (ret < 0)
+ return ret;
+
+ 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");
+ 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);
+ }
+ ret = gpiod_direction_output(ctx->reset_gpio, 1);
+ if (ret < 0) {
+ dev_err(dev, "cannot configure reset-gpios %d\n", ret);
+ return ret;
+ }
+
+ ctx->panel_en_gpio = devm_gpiod_get(dev, "panel-en");
+ if (IS_ERR(ctx->panel_en_gpio)) {
+ dev_err(dev, "cannot get panel-en-gpios %ld\n",
+ PTR_ERR(ctx->panel_en_gpio));
+ return PTR_ERR(ctx->panel_en_gpio);
+ }
+ ret = gpiod_direction_output(ctx->panel_en_gpio, 1);
+ if (ret < 0) {
+ dev_err(dev, "cannot configure panel-en-gpios %d\n", ret);
+ return ret;
+ }
+
+ drm_panel_init(&ctx->panel);
+ ctx->panel.dev = dev;
+ ctx->panel.funcs = &s6e3ha2_drm_funcs;
+
+ ret = drm_panel_add(&ctx->panel);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0)
+ drm_panel_remove(&ctx->panel);
+
+ 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);
+
+ return 0;
+}
+
+static 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_s6e3ha2",
+ .owner = THIS_MODULE,
+ .of_match_table = s6e3ha2_of_match,
+ },
+};
+module_mipi_dsi_driver(s6e3ha2_driver);
+
+MODULE_AUTHOR("Donghwa Lee <dh09.lee@xxxxxxxxxxx>");
+MODULE_AUTHOR("Hyungwon Hwang <human.hwang@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("MIPI-DSI based s6e3ha2 AMOLED Panel Driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
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