* [PATCH 0/2] drm/mipi-dbi: Allow using same the D/C GPIO for multiple displays
@ 2023-07-19 9:53 Otto Pflüger
2023-07-19 9:53 ` [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO Otto Pflüger
2023-07-19 9:53 ` [PATCH 2/2] drm/tiny: panel-mipi-dbi: Allow sharing the " Otto Pflüger
0 siblings, 2 replies; 5+ messages in thread
From: Otto Pflüger @ 2023-07-19 9:53 UTC (permalink / raw)
To: dri-devel
Cc: Thomas Zimmermann, Maxime Ripard, Noralf Trønnes, Otto Pflüger
When multiple displays are connected to the same SPI bus, the data/command
switch is sometimes considered part of the bus and is shared among the
displays.
This series adds the GPIO_FLAGS_BIT_NONEXCLUSIVE flag for this GPIO and
SPI bus locking to the panel-mipi-dbi/drm_mipi_dbi drivers to support this
hardware setup.
Otto Pflüger (2):
drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
drm/tiny: panel-mipi-dbi: Allow sharing the D/C GPIO
drivers/gpu/drm/drm_mipi_dbi.c | 22 +++++++++++++++++-----
drivers/gpu/drm/tiny/panel-mipi-dbi.c | 3 ++-
include/drm/drm_mipi_dbi.h | 2 +-
3 files changed, 20 insertions(+), 7 deletions(-)
--
2.39.1
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
2023-07-19 9:53 [PATCH 0/2] drm/mipi-dbi: Allow using same the D/C GPIO for multiple displays Otto Pflüger
@ 2023-07-19 9:53 ` Otto Pflüger
2023-07-19 14:55 ` kernel test robot
2023-07-19 20:37 ` kernel test robot
2023-07-19 9:53 ` [PATCH 2/2] drm/tiny: panel-mipi-dbi: Allow sharing the " Otto Pflüger
1 sibling, 2 replies; 5+ messages in thread
From: Otto Pflüger @ 2023-07-19 9:53 UTC (permalink / raw)
To: dri-devel
Cc: Thomas Zimmermann, Maxime Ripard, Noralf Trønnes, Otto Pflüger
Multiple displays may be connected to the same bus and share a D/C GPIO,
so the display driver needs exclusive access to the bus to ensure that
it can control the D/C GPIO safely.
Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
---
drivers/gpu/drm/drm_mipi_dbi.c | 22 +++++++++++++++++-----
include/drm/drm_mipi_dbi.h | 2 +-
2 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index c871d9f096b8..c205b7594571 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -1140,10 +1140,13 @@ static int mipi_dbi_typec3_command_read(struct mipi_dbi *dbi, u8 *cmd,
return -ENOMEM;
tr[1].rx_buf = buf;
+
+ spi_bus_lock(spi->controller);
gpiod_set_value_cansleep(dbi->dc, 0);
spi_message_init_with_transfers(&m, tr, ARRAY_SIZE(tr));
- ret = spi_sync(spi, &m);
+ ret = spi_sync_locked(spi, &m);
+ spi_bus_unlock(spi->controller);
if (ret)
goto err_free;
@@ -1177,19 +1180,24 @@ static int mipi_dbi_typec3_command(struct mipi_dbi *dbi, u8 *cmd,
MIPI_DBI_DEBUG_COMMAND(*cmd, par, num);
+ spi_bus_lock(spi->controller);
gpiod_set_value_cansleep(dbi->dc, 0);
speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
- ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
+ ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1, true);
+ spi_bus_unlock(spi->controller);
if (ret || !num)
return ret;
if (*cmd == MIPI_DCS_WRITE_MEMORY_START && !dbi->swap_bytes)
bpw = 16;
+ spi_bus_lock(spi->controller);
gpiod_set_value_cansleep(dbi->dc, 1);
speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
- return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
+ ret = mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num, true);
+ spi_bus_unlock(spi->controller);
+ return ret;
}
/**
@@ -1269,6 +1277,7 @@ EXPORT_SYMBOL(mipi_dbi_spi_init);
* @bpw: Bits per word
* @buf: Buffer to transfer
* @len: Buffer length
+ * @is_locked: Is the SPI bus locked?
*
* This SPI transfer helper breaks up the transfer of @buf into chunks which
* the SPI controller driver can handle.
@@ -1277,7 +1286,7 @@ EXPORT_SYMBOL(mipi_dbi_spi_init);
* Zero on success, negative error code on failure.
*/
int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
- u8 bpw, const void *buf, size_t len)
+ u8 bpw, const void *buf, size_t len, bool is_locked)
{
size_t max_chunk = spi_max_transfer_size(spi);
struct spi_transfer tr = {
@@ -1305,7 +1314,10 @@ int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
buf += chunk;
len -= chunk;
- ret = spi_sync(spi, &m);
+ if (is_locked)
+ ret = spi_sync_locked(spi, &m);
+ else
+ ret = spi_sync(spi, &m);
if (ret)
return ret;
}
diff --git a/include/drm/drm_mipi_dbi.h b/include/drm/drm_mipi_dbi.h
index 816f196b3d4c..da632288aff9 100644
--- a/include/drm/drm_mipi_dbi.h
+++ b/include/drm/drm_mipi_dbi.h
@@ -185,7 +185,7 @@ int mipi_dbi_poweron_conditional_reset(struct mipi_dbi_dev *dbidev);
u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len);
int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
- u8 bpw, const void *buf, size_t len);
+ u8 bpw, const void *buf, size_t len, bool is_locked);
int mipi_dbi_command_read(struct mipi_dbi *dbi, u8 cmd, u8 *val);
int mipi_dbi_command_buf(struct mipi_dbi *dbi, u8 cmd, u8 *data, size_t len);
--
2.39.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 2/2] drm/tiny: panel-mipi-dbi: Allow sharing the D/C GPIO
2023-07-19 9:53 [PATCH 0/2] drm/mipi-dbi: Allow using same the D/C GPIO for multiple displays Otto Pflüger
2023-07-19 9:53 ` [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO Otto Pflüger
@ 2023-07-19 9:53 ` Otto Pflüger
1 sibling, 0 replies; 5+ messages in thread
From: Otto Pflüger @ 2023-07-19 9:53 UTC (permalink / raw)
To: dri-devel
Cc: Thomas Zimmermann, Maxime Ripard, Noralf Trønnes, Otto Pflüger
Displays that are connected to the same SPI bus may share the D/C GPIO.
Use GPIOD_FLAGS_BIT_NONEXCLUSIVE to allow access to the same GPIO for
multiple panel-mipi-dbi instances. Exclusive access to the GPIO during
transfers is ensured by the locking in drm_mipi_dbi.c.
Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
---
drivers/gpu/drm/tiny/panel-mipi-dbi.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
index eb9f13f18a02..e616e3890043 100644
--- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c
+++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c
@@ -307,7 +307,8 @@ static int panel_mipi_dbi_spi_probe(struct spi_device *spi)
if (IS_ERR(dbi->reset))
return dev_err_probe(dev, PTR_ERR(dbi->reset), "Failed to get GPIO 'reset'\n");
- dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW);
+ dc = devm_gpiod_get_optional(dev, "dc",
+ GPIOD_OUT_LOW | GPIOD_FLAGS_BIT_NONEXCLUSIVE);
if (IS_ERR(dc))
return dev_err_probe(dev, PTR_ERR(dc), "Failed to get GPIO 'dc'\n");
--
2.39.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
2023-07-19 9:53 ` [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO Otto Pflüger
@ 2023-07-19 14:55 ` kernel test robot
2023-07-19 20:37 ` kernel test robot
1 sibling, 0 replies; 5+ messages in thread
From: kernel test robot @ 2023-07-19 14:55 UTC (permalink / raw)
To: Otto Pflüger, dri-devel
Cc: Otto Pflüger, Noralf Trønnes, Maxime Ripard,
Thomas Zimmermann, oe-kbuild-all
Hi Otto,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.5-rc2 next-20230719]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Otto-Pfl-ger/drm-mipi-dbi-Lock-SPI-bus-before-setting-D-C-GPIO/20230719-180941
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20230719095343.88359-2-otto.pflueger%40abscue.de
patch subject: [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
config: arc-randconfig-r022-20230718 (https://download.01.org/0day-ci/archive/20230719/202307192201.7i1HPQEe-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230719/202307192201.7i1HPQEe-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307192201.7i1HPQEe-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/gpu/drm/tiny/ili9225.c: In function 'ili9225_dbi_command':
>> drivers/gpu/drm/tiny/ili9225.c:321:15: error: too few arguments to function 'mipi_dbi_spi_transfer'
321 | ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
| ^~~~~~~~~~~~~~~~~~~~~
In file included from drivers/gpu/drm/tiny/ili9225.c:30:
include/drm/drm_mipi_dbi.h:187:5: note: declared here
187 | int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
| ^~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/tiny/ili9225.c:331:16: error: too few arguments to function 'mipi_dbi_spi_transfer'
331 | return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
| ^~~~~~~~~~~~~~~~~~~~~
include/drm/drm_mipi_dbi.h:187:5: note: declared here
187 | int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
| ^~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/tiny/ili9225.c:332:1: error: control reaches end of non-void function [-Werror=return-type]
332 | }
| ^
cc1: some warnings being treated as errors
vim +/mipi_dbi_spi_transfer +321 drivers/gpu/drm/tiny/ili9225.c
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 310
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 311 static int ili9225_dbi_command(struct mipi_dbi *dbi, u8 *cmd, u8 *par,
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 312 size_t num)
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 313 {
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 314 struct spi_device *spi = dbi->spi;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 315 unsigned int bpw = 8;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 316 u32 speed_hz;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 317 int ret;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 318
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 319 gpiod_set_value_cansleep(dbi->dc, 0);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 320 speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
d23d4d4dac0119 drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-19 @321 ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 322 if (ret || !num)
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 323 return ret;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 324
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 325 if (*cmd == ILI9225_WRITE_DATA_TO_GRAM && !dbi->swap_bytes)
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 326 bpw = 16;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 327
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 328 gpiod_set_value_cansleep(dbi->dc, 1);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 329 speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 330
d23d4d4dac0119 drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-19 331 return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 332 }
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 333
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
2023-07-19 9:53 ` [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO Otto Pflüger
2023-07-19 14:55 ` kernel test robot
@ 2023-07-19 20:37 ` kernel test robot
1 sibling, 0 replies; 5+ messages in thread
From: kernel test robot @ 2023-07-19 20:37 UTC (permalink / raw)
To: Otto Pflüger, dri-devel
Cc: llvm, Maxime Ripard, Noralf Trønnes, Thomas Zimmermann,
oe-kbuild-all, Otto Pflüger
Hi Otto,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.5-rc2 next-20230719]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Otto-Pfl-ger/drm-mipi-dbi-Lock-SPI-bus-before-setting-D-C-GPIO/20230719-180941
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/20230719095343.88359-2-otto.pflueger%40abscue.de
patch subject: [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
config: riscv-randconfig-r042-20230720 (https://download.01.org/0day-ci/archive/20230720/202307200456.jGqv0OSC-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230720/202307200456.jGqv0OSC-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307200456.jGqv0OSC-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/gpu/drm/tiny/ili9225.c:321:54: error: too few arguments to function call, expected 6, have 5
321 | ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
| ~~~~~~~~~~~~~~~~~~~~~ ^
include/drm/drm_mipi_dbi.h:187:5: note: 'mipi_dbi_spi_transfer' declared here
187 | int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
| ^
drivers/gpu/drm/tiny/ili9225.c:331:59: error: too few arguments to function call, expected 6, have 5
331 | return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
| ~~~~~~~~~~~~~~~~~~~~~ ^
include/drm/drm_mipi_dbi.h:187:5: note: 'mipi_dbi_spi_transfer' declared here
187 | int mipi_dbi_spi_transfer(struct spi_device *spi, u32 speed_hz,
| ^
2 errors generated.
vim +321 drivers/gpu/drm/tiny/ili9225.c
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 310
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 311 static int ili9225_dbi_command(struct mipi_dbi *dbi, u8 *cmd, u8 *par,
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 312 size_t num)
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 313 {
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 314 struct spi_device *spi = dbi->spi;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 315 unsigned int bpw = 8;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 316 u32 speed_hz;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 317 int ret;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 318
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 319 gpiod_set_value_cansleep(dbi->dc, 0);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 320 speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1);
d23d4d4dac0119 drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-19 @321 ret = mipi_dbi_spi_transfer(spi, speed_hz, 8, cmd, 1);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 322 if (ret || !num)
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 323 return ret;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 324
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 325 if (*cmd == ILI9225_WRITE_DATA_TO_GRAM && !dbi->swap_bytes)
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 326 bpw = 16;
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 327
36b5057216236a drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-22 328 gpiod_set_value_cansleep(dbi->dc, 1);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 329 speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 330
d23d4d4dac0119 drivers/gpu/drm/tinydrm/ili9225.c Noralf Trønnes 2019-07-19 331 return mipi_dbi_spi_transfer(spi, speed_hz, bpw, par, num);
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 332 }
b57e8b7661e046 drivers/gpu/drm/tinydrm/ili9225.c David Lechner 2017-11-19 333
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-07-19 20:38 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-07-19 9:53 [PATCH 0/2] drm/mipi-dbi: Allow using same the D/C GPIO for multiple displays Otto Pflüger
2023-07-19 9:53 ` [PATCH 1/2] drm/mipi-dbi: Lock SPI bus before setting D/C GPIO Otto Pflüger
2023-07-19 14:55 ` kernel test robot
2023-07-19 20:37 ` kernel test robot
2023-07-19 9:53 ` [PATCH 2/2] drm/tiny: panel-mipi-dbi: Allow sharing the " Otto Pflüger
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