Hi Adrian, Thank you for the review comments. On Wed, Jan 11, 2023 at 10:23:43AM +0200, Adrian Hunter wrote: > On 19/12/22 16:24, Piyush Malgujar wrote: > > From: Jayanthi Annadurai <jannadurai@xxxxxxxxxxx> > > > > Add support for CONFIG_MMC_SDHCI_IO_ACCESSORS for controller > > specific register read and write APIs. > > > > Signed-off-by: Jayanthi Annadurai <jannadurai@xxxxxxxxxxx> > > Signed-off-by: Piyush Malgujar <pmalgujar@xxxxxxxxxxx> > > --- > > drivers/mmc/host/Kconfig | 12 ++++++ > > drivers/mmc/host/sdhci-cadence.c | 63 ++++++++++++++++++++++++++++++++ > > 2 files changed, 75 insertions(+) > > > > diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig > > index 5e19a961c34d7b5664ab2fd43cfba82dc90913ac..b5b2ae0bb4625bdb9d17acdbb1887c9caa3a1f32 100644 > > --- a/drivers/mmc/host/Kconfig > > +++ b/drivers/mmc/host/Kconfig > > @@ -262,6 +262,18 @@ config MMC_SDHCI_CADENCE > > > > If unsure, say N. > > > > +config MMC_SDHCI_CN10K > > + tristate "SDHCI Cadence support for Marvell CN10K platforms" > > + select MMC_SDHCI_CADENCE > > + select MMC_SDHCI_IO_ACCESSORS > > Probably better to just add MMC_SDHCI_IO_ACCESSORS to > config MMC_SDHCI_CADENCE and drop MMC_SDHCI_CN10K > This reason behind this was to not force SDHCI_IO_ACCESSORS upon cadence users as some may not require it owing to how cadence ip is integrated to soc. > > + help > > + This selects the SDHCI cadence driver and IO Accessors > > + for Marvell CN10K platforms > > + > > + If you have Marvell CN10K platform, say Y or M here. > > + > > + If unsure, say N. > > + > > config MMC_SDHCI_CNS3XXX > > tristate "SDHCI support on the Cavium Networks CNS3xxx SoC" > > depends on ARCH_CNS3XXX || COMPILE_TEST > > diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c > > index 5332d19e489be936d6814feba4f0fc046f5e130e..6bf703f15bc5be7e3be4cb1144b78ec3585ec540 100644 > > --- a/drivers/mmc/host/sdhci-cadence.c > > +++ b/drivers/mmc/host/sdhci-cadence.c > > @@ -449,6 +449,61 @@ static u32 read_dqs_cmd_delay, clk_wrdqs_delay, clk_wr_delay, read_dqs_delay; > > > > static u32 sdhci_cdns_sd6_get_mode(struct sdhci_host *host, unsigned int timing); > > > > +#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS > > +static u32 sdhci_cdns_sd6_readl(struct sdhci_host *host, int reg) > > +{ > > + return readl(host->ioaddr + reg); > > +} > > + > > +static void sdhci_cdns_sd6_writel(struct sdhci_host *host, u32 val, int reg) > > +{ > > + writel(val, host->ioaddr + reg); > > +} > > + > > +static u16 sdhci_cdns_sd6_readw(struct sdhci_host *host, int reg) > > +{ > > + u32 val, regoff; > > + > > + regoff = reg & ~3; > > + > > + val = readl(host->ioaddr + regoff); > > + if ((reg & 0x3) == 0) > > + return (val & 0xFFFF); > > + else > > + return ((val >> 16) & 0xFFFF); > > +} > > + > > +static void sdhci_cdns_sd6_writew(struct sdhci_host *host, u16 val, int reg) > > +{ > > + writew(val, host->ioaddr + reg); > > +} > > + > > +static u8 sdhci_cdns_sd6_readb(struct sdhci_host *host, int reg) > > +{ > > + u32 val, regoff; > > + > > + regoff = reg & ~3; > > + > > + val = readl(host->ioaddr + regoff); > > + switch (reg & 3) { > > + case 0: > > + return (val & 0xFF); > > + case 1: > > + return ((val >> 8) & 0xFF); > > + case 2: > > + return ((val >> 16) & 0xFF); > > + case 3: > > + return ((val >> 24) & 0xFF); > > + } > > + return 0; > > +} > > + > > +static void sdhci_cdns_sd6_writeb(struct sdhci_host *host, u8 val, int reg) > > +{ > > + writeb(val, host->ioaddr + reg); > > +} > > +#endif > > + > > static int sdhci_cdns_sd6_phy_lock_dll(struct sdhci_cdns_sd6_phy *phy) > > { > > u32 delay_element = phy->d.delay_element_org; > > @@ -1576,6 +1631,14 @@ static const struct sdhci_ops sdhci_cdns_sd4_ops = { > > }; > > > > static const struct sdhci_ops sdhci_cdns_sd6_ops = { > > +#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS > > + .read_l = sdhci_cdns_sd6_readl, > > + .write_l = sdhci_cdns_sd6_writel, > > + .read_w = sdhci_cdns_sd6_readw, > > + .write_w = sdhci_cdns_sd6_writew, > > + .read_b = sdhci_cdns_sd6_readb, > > + .write_b = sdhci_cdns_sd6_writeb, > > +#endif > > .get_max_clock = sdhci_cdns_get_max_clock, > > .set_clock = sdhci_cdns_sd6_set_clock, > > .get_timeout_clock = sdhci_cdns_get_timeout_clock, > Rest of the comments will be taken care in v2. Thanks, Piyush