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Date: Fri, 17 Jan 2020 12:51:42 +0000
From: "Togorean, Bogdan" <Bogdan.Togorean@...log.com>
To: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"a.hajda@...sung.com" <a.hajda@...sung.com>
CC: "narmstrong@...libre.com" <narmstrong@...libre.com>,
"Laurent.pinchart@...asonboard.com"
<Laurent.pinchart@...asonboard.com>,
"robdclark@...omium.org" <robdclark@...omium.org>,
"matt.redfearn@...nci.com" <matt.redfearn@...nci.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"daniel@...ll.ch" <daniel@...ll.ch>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"wsa+renesas@...g-engineering.com" <wsa+renesas@...g-engineering.com>,
"alexander.deucher@....com" <alexander.deucher@....com>,
"mark.rutland@....com" <mark.rutland@....com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"jonas@...boo.se" <jonas@...boo.se>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"airlied@...ux.ie" <airlied@...ux.ie>,
"sam@...nborg.org" <sam@...nborg.org>,
"jernej.skrabec@...l.net" <jernej.skrabec@...l.net>
Subject: Re: [RESEND v3 2/2] drm: bridge: adv7511: Add support for ADV7535
On Fri, 2020-01-17 at 11:55 +0100, Andrzej Hajda wrote:
> [External]
>
> 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
Thank you Andrzej for review.
I'll create separate patch for ADV7533 voltage selection and send V4.
Regards,
Bogdan
>
>
> > 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);
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