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Date: Mon, 1 Aug 2022 12:52:40 +0000
From: "Pandey, Radhey Shyam" <radhey.shyam.pandey@....com>
To: "Claudiu.Beznea@...rochip.com" <Claudiu.Beznea@...rochip.com>
CC: "linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"git (AMD-Xilinx)" <git@....com>,
"git@...inx.com" <git@...inx.com>,
"ronak.jain@...inx.com" <ronak.jain@...inx.com>,
"Nicolas.Ferre@...rochip.com" <Nicolas.Ferre@...rochip.com>,
"davem@...emloft.net" <davem@...emloft.net>,
"edumazet@...gle.com" <edumazet@...gle.com>,
"kuba@...nel.org" <kuba@...nel.org>,
"pabeni@...hat.com" <pabeni@...hat.com>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"michal.simek@...inx.com" <michal.simek@...inx.com>
Subject: RE: [PATCH v2 net-next 1/2] firmware: xilinx: add support for sd/gem
config
> -----Original Message-----
> From: Claudiu.Beznea@...rochip.com <Claudiu.Beznea@...rochip.com>
> Sent: Monday, August 1, 2022 3:27 PM
> To: Pandey, Radhey Shyam <radhey.shyam.pandey@....com>;
> michal.simek@...inx.com; Nicolas.Ferre@...rochip.com;
> davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org;
> pabeni@...hat.com; gregkh@...uxfoundation.org
> Cc: linux-arm-kernel@...ts.infradead.org; linux-kernel@...r.kernel.org;
> netdev@...r.kernel.org; git (AMD-Xilinx) <git@....com>; git@...inx.com;
> ronak.jain@...inx.com
> Subject: Re: [PATCH v2 net-next 1/2] firmware: xilinx: add support for
> sd/gem config
>
> On 29.07.2022 22:35, Radhey Shyam Pandey wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know
> > the content is safe
> >
> > From: Ronak Jain <ronak.jain@...inx.com>
> >
> > Add new APIs in firmware to configure SD/GEM registers. Internally it
> > calls PM IOCTL for below SD/GEM register configuration:
> > - SD/EMMC select
> > - SD slot type
> > - SD base clock
> > - SD 8 bit support
> > - SD fixed config
> > - GEM SGMII Mode
> > - GEM fixed config
> >
> > Signed-off-by: Ronak Jain <ronak.jain@...inx.com>
> > Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@....com>
> > ---
> > Changes for v2:
> > - Use tab indent for zynqmp_pm_set_sd/gem_config return
> documentation.
> > ---
> > drivers/firmware/xilinx/zynqmp.c | 31
> +++++++++++++++++++++++++++++++
> > include/linux/firmware/xlnx-zynqmp.h | 33
> > +++++++++++++++++++++++++++++++++
> > 2 files changed, 64 insertions(+)
> >
> > diff --git a/drivers/firmware/xilinx/zynqmp.c
> > b/drivers/firmware/xilinx/zynqmp.c
> > index 7977a494a651..44c44077dfc5 100644
> > --- a/drivers/firmware/xilinx/zynqmp.c
> > +++ b/drivers/firmware/xilinx/zynqmp.c
> > @@ -1298,6 +1298,37 @@ int zynqmp_pm_get_feature_config(enum
> > pm_feature_config_id id, }
> >
> > /**
> > + * zynqmp_pm_set_sd_config - PM call to set value of SD config registers
> > + * @node: SD node ID
> > + * @config: The config type of SD registers
> > + * @value: Value to be set
> > + *
> > + * Return: Returns 0 on success or error value on failure.
> > + */
> > +int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type
> config,
> > +u32 value) {
> > + return zynqmp_pm_invoke_fn(PM_IOCTL, node,
> IOCTL_SET_SD_CONFIG,
> > + config, value, NULL); }
> > +EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_config);
> > +
> > +/**
> > + * zynqmp_pm_set_gem_config - PM call to set value of GEM config
> registers
> > + * @node: GEM node ID
> > + * @config: The config type of GEM registers
> > + * @value: Value to be set
> > + *
> > + * Return: Returns 0 on success or error value on failure.
> > + */
> > +int zynqmp_pm_set_gem_config(u32 node, enum pm_gem_config_type
> config,
> > + u32 value) {
> > + return zynqmp_pm_invoke_fn(PM_IOCTL, node,
> IOCTL_SET_GEM_CONFIG,
> > + config, value, NULL); }
> > +EXPORT_SYMBOL_GPL(zynqmp_pm_set_gem_config);
> > +
> > +/**
> > * struct zynqmp_pm_shutdown_scope - Struct for shutdown scope
> > * @subtype: Shutdown subtype
> > * @name: Matching string for scope argument
> > diff --git a/include/linux/firmware/xlnx-zynqmp.h
> > b/include/linux/firmware/xlnx-zynqmp.h
> > index 1ec73d5352c3..063a93c133f1 100644
> > --- a/include/linux/firmware/xlnx-zynqmp.h
> > +++ b/include/linux/firmware/xlnx-zynqmp.h
> > @@ -152,6 +152,9 @@ enum pm_ioctl_id {
> > /* Runtime feature configuration */
> > IOCTL_SET_FEATURE_CONFIG = 26,
> > IOCTL_GET_FEATURE_CONFIG = 27,
> > + /* Dynamic SD/GEM configuration */
> > + IOCTL_SET_SD_CONFIG = 30,
> > + IOCTL_SET_GEM_CONFIG = 31,
> > };
> >
> > enum pm_query_id {
> > @@ -393,6 +396,18 @@ enum pm_feature_config_id {
> > PM_FEATURE_EXTWDT_VALUE = 4,
> > };
> >
> > +enum pm_sd_config_type {
> > + SD_CONFIG_EMMC_SEL = 1, /* To set SD_EMMC_SEL in CTRL_REG_SD
> and SD_SLOTTYPE */
> > + SD_CONFIG_BASECLK = 2, /* To set SD_BASECLK in SD_CONFIG_REG1
> */
> > + SD_CONFIG_8BIT = 3, /* To set SD_8BIT in SD_CONFIG_REG2 */
> > + SD_CONFIG_FIXED = 4, /* To set fixed config registers */ };
> > +
> > +enum pm_gem_config_type {
> > + GEM_CONFIG_SGMII_MODE = 1, /* To set GEM_SGMII_MODE in
> GEM_CLK_CTRL register */
> > + GEM_CONFIG_FIXED = 2, /* To set fixed config registers */ };
>
> As you adapted kernel style documentation for the rest of code added in this
> patch you can follow this rules for enums, too.
Which particular style issue you are mentioning here? There is a tab
before GEM_CONFIG_* enum member and also checkpatch --strict
report no issues.
>
> > +
> > /**
> > * struct zynqmp_pm_query_data - PM query data
> > * @qid: query ID
> > @@ -468,6 +483,9 @@ int zynqmp_pm_feature(const u32 api_id); int
> > zynqmp_pm_is_function_supported(const u32 api_id, const u32 id); int
> > zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32
> value);
> > int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32
> > *payload);
> > +int zynqmp_pm_set_sd_config(u32 node, enum pm_sd_config_type
> config,
> > +u32 value); int zynqmp_pm_set_gem_config(u32 node, enum
> pm_gem_config_type config,
> > + u32 value);
> > #else
> > static inline int zynqmp_pm_get_api_version(u32 *version) { @@
> > -733,6 +751,21 @@ static inline int zynqmp_pm_get_feature_config(enum
> > pm_feature_config_id id, {
> > return -ENODEV;
> > }
> > +
> > +static inline int zynqmp_pm_set_sd_config(u32 node,
> > + enum pm_sd_config_type config,
> > + u32 value) {
> > + return -ENODEV;
> > +}
> > +
> > +static inline int zynqmp_pm_set_gem_config(u32 node,
> > + enum pm_gem_config_type config,
> > + u32 value) {
> > + return -ENODEV;
> > +}
> > +
> > #endif
> >
> > #endif /* __FIRMWARE_ZYNQMP_H__ */
> > --
> > 2.1.1
> >
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