| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <97b4a2c6-2c2e-f486-f454-c340a0c3038c@samsung.com>
Date: Fri, 17 Jan 2020 11:55:28 +0100
From: Andrzej Hajda <a.hajda@...sung.com>
To: Bogdan Togorean <bogdan.togorean@...log.com>,
dri-devel@...ts.freedesktop.org
Cc: airlied@...ux.ie, daniel@...ll.ch, robh+dt@...nel.org,
mark.rutland@....com, narmstrong@...libre.com,
Laurent.pinchart@...asonboard.com, jonas@...boo.se,
jernej.skrabec@...l.net, gregkh@...uxfoundation.org,
tglx@...utronix.de, sam@...nborg.org, alexander.deucher@....com,
matt.redfearn@...nci.com, robdclark@...omium.org,
wsa+renesas@...g-engineering.com, linux-kernel@...r.kernel.org
Subject: Re: [RESEND v3 2/2] drm: bridge: adv7511: Add support for ADV7535
On 17.01.2020 11:27, Andrzej Hajda wrote:
> On 07.01.2020 14:34, Bogdan Togorean wrote:
>> ADV7535 is a DSI to HDMI bridge chip like ADV7533 but it allows
>> 1080p@...z. v1p2 is fixed to 1.8V on ADV7535 but on ADV7533 can be 1.2V
>> or 1.8V and is configurable in a register.
>>
>> Signed-off-by: Bogdan Togorean <bogdan.togorean@...log.com>
>> ---
>> drivers/gpu/drm/bridge/adv7511/Kconfig | 13 ++----
>> drivers/gpu/drm/bridge/adv7511/Makefile | 3 +-
>> drivers/gpu/drm/bridge/adv7511/adv7511.h | 44 +++-----------------
>> drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 35 ++++++++++------
>> 4 files changed, 32 insertions(+), 63 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/adv7511/Kconfig b/drivers/gpu/drm/bridge/adv7511/Kconfig
>> index 8a56ff81f4fb..47d4eb9e845d 100644
>> --- a/drivers/gpu/drm/bridge/adv7511/Kconfig
>> +++ b/drivers/gpu/drm/bridge/adv7511/Kconfig
>> @@ -4,8 +4,9 @@ config DRM_I2C_ADV7511
>> depends on OF
>> select DRM_KMS_HELPER
>> select REGMAP_I2C
>> + select DRM_MIPI_DSI
>> help
>> - Support for the Analog Device ADV7511(W) and ADV7513 HDMI encoders.
>> + Support for the Analog Device ADV7511(W)/13/33/35 HDMI encoders.
>>
>> config DRM_I2C_ADV7511_AUDIO
>> bool "ADV7511 HDMI Audio driver"
>> @@ -15,16 +16,8 @@ config DRM_I2C_ADV7511_AUDIO
>> Support the ADV7511 HDMI Audio interface. This is used in
>> conjunction with the AV7511 HDMI driver.
>>
>> -config DRM_I2C_ADV7533
>> - bool "ADV7533 encoder"
>> - depends on DRM_I2C_ADV7511
>> - select DRM_MIPI_DSI
>> - default y
>> - help
>> - Support for the Analog Devices ADV7533 DSI to HDMI encoder.
>> -
>> config DRM_I2C_ADV7511_CEC
>> - bool "ADV7511/33 HDMI CEC driver"
>> + bool "ADV7511/33/35 HDMI CEC driver"
>> depends on DRM_I2C_ADV7511
>> select CEC_CORE
>> default y
>> diff --git a/drivers/gpu/drm/bridge/adv7511/Makefile b/drivers/gpu/drm/bridge/adv7511/Makefile
>> index b46ebeb35fd4..d8ceb534b51f 100644
>> --- a/drivers/gpu/drm/bridge/adv7511/Makefile
>> +++ b/drivers/gpu/drm/bridge/adv7511/Makefile
>> @@ -1,6 +1,5 @@
>> # SPDX-License-Identifier: GPL-2.0-only
>> -adv7511-y := adv7511_drv.o
>> +adv7511-y := adv7511_drv.o adv7533.o
>> adv7511-$(CONFIG_DRM_I2C_ADV7511_AUDIO) += adv7511_audio.o
>> adv7511-$(CONFIG_DRM_I2C_ADV7511_CEC) += adv7511_cec.o
>> -adv7511-$(CONFIG_DRM_I2C_ADV7533) += adv7533.o
>> obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511.o
>> diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h
>> index 52b2adfdc877..ed9cfd944098 100644
>> --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h
>> +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h
>> @@ -220,6 +220,10 @@
>>
>> #define ADV7533_REG_CEC_OFFSET 0x70
>>
>> +#define ADV7533_REG_SUPPLY_SELECT 0xe4
>> +
>> +#define ADV7533_V1P2_ENABLE BIT(7)
>> +
>> enum adv7511_input_clock {
>> ADV7511_INPUT_CLOCK_1X,
>> ADV7511_INPUT_CLOCK_2X,
>> @@ -320,6 +324,7 @@ struct adv7511_video_config {
>> enum adv7511_type {
>> ADV7511,
>> ADV7533,
>> + ADV7535,
>> };
>>
>> #define ADV7511_MAX_ADDRS 3
>> @@ -393,7 +398,6 @@ static inline int adv7511_cec_init(struct device *dev, struct adv7511 *adv7511)
>> }
>> #endif
>>
>> -#ifdef CONFIG_DRM_I2C_ADV7533
>> void adv7533_dsi_power_on(struct adv7511 *adv);
>> void adv7533_dsi_power_off(struct adv7511 *adv);
>> void adv7533_mode_set(struct adv7511 *adv, const struct drm_display_mode *mode);
>> @@ -402,44 +406,6 @@ int adv7533_patch_cec_registers(struct adv7511 *adv);
>> int adv7533_attach_dsi(struct adv7511 *adv);
>> void adv7533_detach_dsi(struct adv7511 *adv);
>> int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv);
>> -#else
>> -static inline void adv7533_dsi_power_on(struct adv7511 *adv)
>> -{
>> -}
>> -
>> -static inline void adv7533_dsi_power_off(struct adv7511 *adv)
>> -{
>> -}
>> -
>> -static inline void adv7533_mode_set(struct adv7511 *adv,
>> - const struct drm_display_mode *mode)
>> -{
>> -}
>> -
>> -static inline int adv7533_patch_registers(struct adv7511 *adv)
>> -{
>> - return -ENODEV;
>> -}
>> -
>> -static inline int adv7533_patch_cec_registers(struct adv7511 *adv)
>> -{
>> - return -ENODEV;
>> -}
>> -
>> -static inline int adv7533_attach_dsi(struct adv7511 *adv)
>> -{
>> - return -ENODEV;
>> -}
>> -
>> -static inline void adv7533_detach_dsi(struct adv7511 *adv)
>> -{
>> -}
>> -
>> -static inline int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv)
>> -{
>> - return -ENODEV;
>> -}
>> -#endif
>>
>> #ifdef CONFIG_DRM_I2C_ADV7511_AUDIO
>> int adv7511_audio_init(struct device *dev, struct adv7511 *adv7511);
>> diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
>> index 9e13e466e72c..35595472e771 100644
>> --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
>> +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
>> @@ -367,7 +367,7 @@ static void adv7511_power_on(struct adv7511 *adv7511)
>> */
>> regcache_sync(adv7511->regmap);
>>
>> - if (adv7511->type == ADV7533)
>> + if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
>> adv7533_dsi_power_on(adv7511);
>> adv7511->powered = true;
>> }
>> @@ -387,7 +387,7 @@ static void __adv7511_power_off(struct adv7511 *adv7511)
>> static void adv7511_power_off(struct adv7511 *adv7511)
>> {
>> __adv7511_power_off(adv7511);
>> - if (adv7511->type == ADV7533)
>> + if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
>> adv7533_dsi_power_off(adv7511);
>> adv7511->powered = false;
>> }
>> @@ -761,7 +761,7 @@ static void adv7511_mode_set(struct adv7511 *adv7511,
>> regmap_update_bits(adv7511->regmap, 0x17,
>> 0x60, (vsync_polarity << 6) | (hsync_polarity << 5));
>>
>> - if (adv7511->type == ADV7533)
>> + if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
>> adv7533_mode_set(adv7511, adj_mode);
>>
>> drm_mode_copy(&adv7511->curr_mode, adj_mode);
>> @@ -874,7 +874,7 @@ static int adv7511_bridge_attach(struct drm_bridge *bridge)
>> &adv7511_connector_helper_funcs);
>> drm_connector_attach_encoder(&adv->connector, bridge->encoder);
>>
>> - if (adv->type == ADV7533)
>> + if (adv->type == ADV7533 || adv->type == ADV7535)
>> ret = adv7533_attach_dsi(adv);
>>
>> if (adv->i2c_main->irq)
>> @@ -903,6 +903,7 @@ static const char * const adv7511_supply_names[] = {
>> "dvdd-3v",
>> };
>>
>> +/* The order of entries is important. If changed update hardcoded indices */
>> static const char * const adv7533_supply_names[] = {
>> "avdd",
>> "dvdd",
>> @@ -952,7 +953,7 @@ static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg)
>> struct i2c_client *i2c = to_i2c_client(dev);
>> struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
>>
>> - if (adv7511->type == ADV7533)
>> + if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
>> reg -= ADV7533_REG_CEC_OFFSET;
>>
>> switch (reg) {
>> @@ -994,7 +995,7 @@ static int adv7511_init_cec_regmap(struct adv7511 *adv)
>> goto err;
>> }
>>
>> - if (adv->type == ADV7533) {
>> + if (adv->type == ADV7533 || adv->type == ADV7535) {
>> ret = adv7533_patch_cec_registers(adv);
>> if (ret)
>> goto err;
>> @@ -1094,8 +1095,9 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
>> struct adv7511_link_config link_config;
>> struct adv7511 *adv7511;
>> struct device *dev = &i2c->dev;
>> + struct regulator *reg_v1p2;
>> unsigned int val;
>> - int ret;
>> + int ret, reg_v1p2_uV;
>>
>> if (!dev->of_node)
>> return -EINVAL;
>> @@ -1163,6 +1165,17 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
>> if (ret)
>> goto uninit_regulators;
>>
>> + if (adv7511->type == ADV7533) {
>> + reg_v1p2 = adv7511->supplies[5].consumer;
>> + reg_v1p2_uV = regulator_get_voltage(reg_v1p2);
>> +
>> + if (reg_v1p2_uV == 1200000) {
>> + regmap_update_bits(adv7511->regmap,
>> + ADV7533_REG_SUPPLY_SELECT, ADV7533_V1P2_ENABLE,
>> + ADV7533_V1P2_ENABLE);
>> + }
>> + }
>> +
>
> In patch adding support for adv7535 you modifies adv7533 path. It looks
> suspicious, maybe it would be better to extract it to separate patch.
> Anyway this change requires tests from adv7533 users.
One more thing, maybe it would be better to add some tolerance to 1.2V
test, quick look at public datasheet suggest +/- 0.06V.
Regards
Andrzej
>
> Beside this the patch looks OK.
>
>
> Regards
>
> Andrzej
>
>
>> adv7511_packet_disable(adv7511, 0xffff);
>>
>> adv7511->i2c_edid = i2c_new_ancillary_device(i2c, "edid",
>> @@ -1242,7 +1255,7 @@ static int adv7511_remove(struct i2c_client *i2c)
>> {
>> struct adv7511 *adv7511 = i2c_get_clientdata(i2c);
>>
>> - if (adv7511->type == ADV7533)
>> + if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
>> adv7533_detach_dsi(adv7511);
>> i2c_unregister_device(adv7511->i2c_cec);
>> if (adv7511->cec_clk)
>> @@ -1266,9 +1279,8 @@ static const struct i2c_device_id adv7511_i2c_ids[] = {
>> { "adv7511", ADV7511 },
>> { "adv7511w", ADV7511 },
>> { "adv7513", ADV7511 },
>> -#ifdef CONFIG_DRM_I2C_ADV7533
>> { "adv7533", ADV7533 },
>> -#endif
>> + { "adv7535", ADV7535 },
>> { }
>> };
>> MODULE_DEVICE_TABLE(i2c, adv7511_i2c_ids);
>> @@ -1277,9 +1289,8 @@ static const struct of_device_id adv7511_of_ids[] = {
>> { .compatible = "adi,adv7511", .data = (void *)ADV7511 },
>> { .compatible = "adi,adv7511w", .data = (void *)ADV7511 },
>> { .compatible = "adi,adv7513", .data = (void *)ADV7511 },
>> -#ifdef CONFIG_DRM_I2C_ADV7533
>> { .compatible = "adi,adv7533", .data = (void *)ADV7533 },
>> -#endif
>> + { .compatible = "adi,adv7535", .data = (void *)ADV7535 },
>> { }
>> };
>> MODULE_DEVICE_TABLE(of, adv7511_of_ids);
>
Powered by blists - more mailing lists