Skip to content

Commit bd07dbb

Browse files
JIaxygasuperna9999
JIaxyga
authored and
superna9999
committed
drm/panel: Add Samsung AMS639RQ08 panel driver
Add the driver for Samsung AMS639RQ08 FHD Plus CMD mode panel support found in: - Xiaomi Mi 9 Lite / CC9 (sdm710-xiaomi-pyxis) - Xiaomi Mi 9T / Redmi K20 (sm7150-xiaomi-davinci) - Xiaomi Mi 9T Pro / Redmi K20 Pro (sm8150-xiaomi-raphael) Tested-by: Degdag Mohamed <[email protected]> # xiaomi-raphael Tested-by: Jens Reidel <[email protected]> # xiaomi-davinci Signed-off-by: Danila Tikhonov <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
1 parent a62528a commit bd07dbb

File tree

3 files changed

+339
-0
lines changed

3 files changed

+339
-0
lines changed

‎drivers/gpu/drm/panel/Kconfig

Lines changed: 9 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -614,6 +614,15 @@ config DRM_PANEL_RONBO_RB070D30
614614
Say Y here if you want to enable support for Ronbo Electronics
615615
RB070D30 1024x600 DSI panel.
616616

617+
config DRM_PANEL_SAMSUNG_AMS639RQ08
618+
tristate "Samsung AMS639RQ08 panel"
619+
depends on OF
620+
depends on DRM_MIPI_DSI
621+
depends on BACKLIGHT_CLASS_DEVICE
622+
help
623+
Say Y or M here if you want to enable support for the
624+
Samsung AMS639RQ08 FHD Plus (2340x1080@60Hz) CMD mode panel.
625+
617626
config DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01
618627
tristate "Samsung AMS452EF01 panel with S6E88A0 DSI video mode controller"
619628
depends on OF

‎drivers/gpu/drm/panel/Makefile

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -62,6 +62,7 @@ obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
6262
obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o
6363
obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM69380) += panel-raydium-rm69380.o
6464
obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
65+
obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMS639RQ08) += panel-samsung-ams639rq08.o
6566
obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o
6667
obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o
6768
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o

‎drivers/gpu/drm/panel/panel-samsung-ams639rq08.c

Lines changed: 329 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,329 @@
1+
// SPDX-License-Identifier: GPL-2.0-only
2+
/*
3+
* Copyright (c) 2024, Danila Tikhonov <[email protected]>
4+
*/
5+
6+
#include <linux/backlight.h>
7+
#include <linux/delay.h>
8+
#include <linux/gpio/consumer.h>
9+
#include <linux/module.h>
10+
#include <linux/of.h>
11+
#include <linux/regulator/consumer.h>
12+
13+
#include <video/mipi_display.h>
14+
15+
#include <drm/drm_mipi_dsi.h>
16+
#include <drm/drm_modes.h>
17+
#include <drm/drm_panel.h>
18+
#include <drm/drm_probe_helper.h>
19+
20+
/* Manufacturer Command Set */
21+
#define MCS_ACCESS_PROT_OFF 0xb0
22+
#define MCS_UNKNOWN_B7 0xb7
23+
#define MCS_BIAS_CURRENT_CTRL 0xd1
24+
#define MCS_PASSWD1 0xf0
25+
#define MCS_PASSWD2 0xfc
26+
#define MCS_UNKNOWN_FF 0xff
27+
28+
struct ams639rq08 {
29+
struct drm_panel panel;
30+
struct mipi_dsi_device *dsi;
31+
struct gpio_desc *reset_gpio;
32+
struct regulator_bulk_data *supplies;
33+
};
34+
35+
static const struct regulator_bulk_data ams639rq08_supplies[] = {
36+
{ .supply = "vdd3p3" },
37+
{ .supply = "vddio" },
38+
{ .supply = "vsn" },
39+
{ .supply = "vsp" },
40+
};
41+
42+
static inline struct ams639rq08 *to_ams639rq08(struct drm_panel *panel)
43+
{
44+
return container_of(panel, struct ams639rq08, panel);
45+
}
46+
47+
static void ams639rq08_reset(struct ams639rq08 *ctx)
48+
{
49+
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
50+
usleep_range(1000, 2000);
51+
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
52+
usleep_range(10000, 11000);
53+
}
54+
55+
static int ams639rq08_on(struct ams639rq08 *ctx)
56+
{
57+
struct mipi_dsi_device *dsi = ctx->dsi;
58+
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
59+
60+
/* Delay 2ms for VCI1 power */
61+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD1, 0x5a, 0x5a);
62+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD2, 0x5a, 0x5a);
63+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x0c);
64+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_UNKNOWN_FF, 0x10);
65+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x2f);
66+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_BIAS_CURRENT_CTRL, 0x01);
67+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD1, 0xa5, 0xa5);
68+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD2, 0xa5, 0xa5);
69+
70+
/* Sleep Out */
71+
mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
72+
usleep_range(10000, 11000);
73+
74+
/* TE OUT (Vsync On) */
75+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD1, 0x5a, 0x5a);
76+
77+
mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
78+
79+
/* DBV Smooth Transition */
80+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_UNKNOWN_B7, 0x01, 0x4b);
81+
82+
/* Edge Dimming Speed Setting */
83+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x06);
84+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_UNKNOWN_B7, 0x10);
85+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD1, 0xa5, 0xa5);
86+
87+
/* Page Address Set */
88+
mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x0923);
89+
90+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD1, 0x5a, 0x5a);
91+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD2, 0x5a, 0x5a);
92+
93+
/* Set DDIC internal HFP */
94+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x23);
95+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_BIAS_CURRENT_CTRL, 0x11);
96+
97+
/* OFC Setting 84.1 Mhz */
98+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe9, 0x11, 0x55,
99+
0xa6, 0x75, 0xa3,
100+
0xb9, 0xa1, 0x4a,
101+
0x00, 0x1a, 0xb8);
102+
103+
/* Err_FG Setting */
104+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe1,
105+
0x00, 0x00, 0x02,
106+
0x02, 0x42, 0x02);
107+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe2,
108+
0x00, 0x00, 0x00,
109+
0x00, 0x00, 0x00);
110+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x0c);
111+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe1, 0x19);
112+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD1, 0xa5, 0xa5);
113+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD2, 0xa5, 0xa5);
114+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
115+
116+
/* Brightness Control */
117+
mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x0000);
118+
119+
/* Display On */
120+
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
121+
mipi_dsi_msleep(&dsi_ctx, 67);
122+
123+
mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
124+
125+
return dsi_ctx.accum_err;
126+
}
127+
128+
static void ams639rq08_off(struct ams639rq08 *ctx)
129+
{
130+
struct mipi_dsi_device *dsi = ctx->dsi;
131+
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
132+
133+
mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
134+
mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
135+
mipi_dsi_msleep(&dsi_ctx, 120);
136+
}
137+
138+
static int ams639rq08_prepare(struct drm_panel *panel)
139+
{
140+
struct ams639rq08 *ctx = to_ams639rq08(panel);
141+
int ret;
142+
143+
ret = regulator_bulk_enable(ARRAY_SIZE(ams639rq08_supplies),
144+
ctx->supplies);
145+
if (ret < 0)
146+
return ret;
147+
148+
ams639rq08_reset(ctx);
149+
150+
ret = ams639rq08_on(ctx);
151+
if (ret < 0) {
152+
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
153+
regulator_bulk_disable(ARRAY_SIZE(ams639rq08_supplies),
154+
ctx->supplies);
155+
return ret;
156+
}
157+
158+
return 0;
159+
}
160+
161+
static int ams639rq08_unprepare(struct drm_panel *panel)
162+
{
163+
struct ams639rq08 *ctx = to_ams639rq08(panel);
164+
165+
ams639rq08_off(ctx);
166+
167+
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
168+
regulator_bulk_disable(ARRAY_SIZE(ams639rq08_supplies),
169+
ctx->supplies);
170+
171+
return 0;
172+
}
173+
174+
static const struct drm_display_mode ams639rq08_mode = {
175+
.clock = (1080 + 64 + 20 + 64) * (2340 + 64 + 20 + 64) * 60 / 1000,
176+
.hdisplay = 1080,
177+
.hsync_start = 1080 + 64,
178+
.hsync_end = 1080 + 64 + 20,
179+
.htotal = 1080 + 64 + 20 + 64,
180+
.vdisplay = 2340,
181+
.vsync_start = 2340 + 64,
182+
.vsync_end = 2340 + 64 + 20,
183+
.vtotal = 2340 + 64 + 20 + 64,
184+
.width_mm = 68,
185+
.height_mm = 147,
186+
.type = DRM_MODE_TYPE_DRIVER,
187+
};
188+
189+
static int ams639rq08_get_modes(struct drm_panel *panel,
190+
struct drm_connector *connector)
191+
{
192+
return drm_connector_helper_get_modes_fixed(connector, &ams639rq08_mode);
193+
}
194+
195+
static const struct drm_panel_funcs ams639rq08_panel_funcs = {
196+
.prepare = ams639rq08_prepare,
197+
.unprepare = ams639rq08_unprepare,
198+
.get_modes = ams639rq08_get_modes,
199+
};
200+
201+
static int ams639rq08_bl_update_status(struct backlight_device *bl)
202+
{
203+
struct mipi_dsi_device *dsi = bl_get_data(bl);
204+
u16 brightness = backlight_get_brightness(bl);
205+
int ret;
206+
207+
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
208+
209+
ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
210+
if (ret < 0)
211+
return ret;
212+
213+
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
214+
215+
return 0;
216+
}
217+
218+
static int ams639rq08_bl_get_brightness(struct backlight_device *bl)
219+
{
220+
struct mipi_dsi_device *dsi = bl_get_data(bl);
221+
u16 brightness;
222+
int ret;
223+
224+
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
225+
226+
ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness);
227+
if (ret < 0)
228+
return ret;
229+
230+
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
231+
232+
return brightness;
233+
}
234+
235+
static const struct backlight_ops ams639rq08_bl_ops = {
236+
.update_status = ams639rq08_bl_update_status,
237+
.get_brightness = ams639rq08_bl_get_brightness,
238+
};
239+
240+
static struct backlight_device *
241+
ams639rq08_create_backlight(struct mipi_dsi_device *dsi)
242+
{
243+
struct device *dev = &dsi->dev;
244+
const struct backlight_properties props = {
245+
.type = BACKLIGHT_RAW,
246+
.brightness = 1023,
247+
.max_brightness = 2047,
248+
};
249+
250+
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
251+
&ams639rq08_bl_ops, &props);
252+
}
253+
254+
static int ams639rq08_probe(struct mipi_dsi_device *dsi)
255+
{
256+
struct device *dev = &dsi->dev;
257+
struct ams639rq08 *ctx;
258+
int ret;
259+
260+
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
261+
if (!ctx)
262+
return -ENOMEM;
263+
264+
ret = devm_regulator_bulk_get_const(&dsi->dev,
265+
ARRAY_SIZE(ams639rq08_supplies),
266+
ams639rq08_supplies,
267+
&ctx->supplies);
268+
if (ret < 0)
269+
return dev_err_probe(dev, ret, "Failed to get regulators\n");
270+
271+
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
272+
if (IS_ERR(ctx->reset_gpio))
273+
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
274+
"Failed to get reset-gpios\n");
275+
276+
ctx->dsi = dsi;
277+
mipi_dsi_set_drvdata(dsi, ctx);
278+
279+
dsi->lanes = 4;
280+
dsi->format = MIPI_DSI_FMT_RGB888;
281+
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
282+
MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
283+
284+
drm_panel_init(&ctx->panel, dev, &ams639rq08_panel_funcs,
285+
DRM_MODE_CONNECTOR_DSI);
286+
ctx->panel.prepare_prev_first = true;
287+
288+
ctx->panel.backlight = ams639rq08_create_backlight(dsi);
289+
if (IS_ERR(ctx->panel.backlight))
290+
return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
291+
"Failed to create backlight\n");
292+
293+
drm_panel_add(&ctx->panel);
294+
295+
ret = devm_mipi_dsi_attach(dev, dsi);
296+
if (ret < 0) {
297+
drm_panel_remove(&ctx->panel);
298+
return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
299+
}
300+
301+
return 0;
302+
}
303+
304+
static void ams639rq08_remove(struct mipi_dsi_device *dsi)
305+
{
306+
struct ams639rq08 *ctx = mipi_dsi_get_drvdata(dsi);
307+
308+
drm_panel_remove(&ctx->panel);
309+
}
310+
311+
static const struct of_device_id ams639rq08_of_match[] = {
312+
{ .compatible = "samsung,ams639rq08" },
313+
{ /* sentinel */ }
314+
};
315+
MODULE_DEVICE_TABLE(of, ams639rq08_of_match);
316+
317+
static struct mipi_dsi_driver ams639rq08_driver = {
318+
.probe = ams639rq08_probe,
319+
.remove = ams639rq08_remove,
320+
.driver = {
321+
.name = "panel-samsung-ams639rq08",
322+
.of_match_table = ams639rq08_of_match,
323+
},
324+
};
325+
module_mipi_dsi_driver(ams639rq08_driver);
326+
327+
MODULE_AUTHOR("Danila Tikhonov <[email protected]>");
328+
MODULE_DESCRIPTION("DRM driver for SAMSUNG AMS639RQ08 cmd mode dsi panel");
329+
MODULE_LICENSE("GPL");

0 commit comments

Comments
 (0)