[PATCH v2 net-next 1/2] firmware: xilinx: add support for sd/gem config

Pandey, Radhey Shyam radhey.shyam.pandey at amd.com
Mon Aug 1 05:52:40 PDT 2022


> -----Original Message-----
> From: Claudiu.Beznea at microchip.com <Claudiu.Beznea at microchip.com>
> Sent: Monday, August 1, 2022 3:27 PM
> To: Pandey, Radhey Shyam <radhey.shyam.pandey at amd.com>;
> michal.simek at xilinx.com; Nicolas.Ferre at microchip.com;
> davem at davemloft.net; edumazet at google.com; kuba at kernel.org;
> pabeni at redhat.com; gregkh at linuxfoundation.org
> Cc: linux-arm-kernel at lists.infradead.org; linux-kernel at vger.kernel.org;
> netdev at vger.kernel.org; git (AMD-Xilinx) <git at amd.com>; git at xilinx.com;
> ronak.jain at xilinx.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 at xilinx.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 at xilinx.com>
> > Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey at amd.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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