| Message ID | 1515759368-16946-3-git-send-email-patrice.chotard@st.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add MMCI support for STM32F SoCs family | expand |
On Fri, Jan 12, 2018 at 1:15 PM, <patrice.chotard@st.com> wrote: > From: Patrice Chotard <patrice.chotard@st.com> > > This patch prepares for supporting the STM32 variant that > has no such bit in the status register. > > Signed-off-by: Andrea Merello <andrea.merello@gmail.com> > Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 12 January 2018 at 13:15, <patrice.chotard@st.com> wrote: > From: Patrice Chotard <patrice.chotard@st.com> > > This patch prepares for supporting the STM32 variant that > has no such bit in the status register. > > Signed-off-by: Andrea Merello <andrea.merello@gmail.com> > Signed-off-by: Patrice Chotard <patrice.chotard@st.com> > --- > drivers/mmc/host/mmci.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c > index 3125dc0..7e56f85 100644 > --- a/drivers/mmc/host/mmci.c > +++ b/drivers/mmc/host/mmci.c > @@ -83,6 +83,8 @@ > * @qcom_dml: enables qcom specific dma glue for dma transfers. > * @reversed_irq_handling: handle data irq before cmd irq. > * @mmcimask1: true if variant have a MMCIMASK1 register. > + * @start_err: true is the variant has STARTBITERR bit inside MMCISTATUS > + * register. > */ > struct variant_data { > unsigned int clkreg; > @@ -113,6 +115,7 @@ struct variant_data { > bool qcom_dml; > bool reversed_irq_handling; > bool mmcimask1; > + bool start_err; To be consistent with how we implement support for similar variant variations, I would prefer to have this being a u32. Something along the lines of how the "busy_detect_flag" is being used. Otherwise this looks good to me. [...] Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Ulf On 01/15/2018 01:32 PM, Ulf Hansson wrote: > On 12 January 2018 at 13:15, <patrice.chotard@st.com> wrote: >> From: Patrice Chotard <patrice.chotard@st.com> >> >> This patch prepares for supporting the STM32 variant that >> has no such bit in the status register. >> >> Signed-off-by: Andrea Merello <andrea.merello@gmail.com> >> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> >> --- >> drivers/mmc/host/mmci.c | 16 ++++++++++++++-- >> 1 file changed, 14 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c >> index 3125dc0..7e56f85 100644 >> --- a/drivers/mmc/host/mmci.c >> +++ b/drivers/mmc/host/mmci.c >> @@ -83,6 +83,8 @@ >> * @qcom_dml: enables qcom specific dma glue for dma transfers. >> * @reversed_irq_handling: handle data irq before cmd irq. >> * @mmcimask1: true if variant have a MMCIMASK1 register. >> + * @start_err: true is the variant has STARTBITERR bit inside MMCISTATUS >> + * register. >> */ >> struct variant_data { >> unsigned int clkreg; >> @@ -113,6 +115,7 @@ struct variant_data { >> bool qcom_dml; >> bool reversed_irq_handling; >> bool mmcimask1; >> + bool start_err; > > To be consistent with how we implement support for similar variant > variations, I would prefer to have this being a u32. Something along > the lines of how the "busy_detect_flag" is being used. OK i will update this in v2 Thanks Patrice > > Otherwise this looks good to me. > > [...] > > Kind regards > Uffe >
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 3125dc0..7e56f85 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -83,6 +83,8 @@ * @qcom_dml: enables qcom specific dma glue for dma transfers. * @reversed_irq_handling: handle data irq before cmd irq. * @mmcimask1: true if variant have a MMCIMASK1 register. + * @start_err: true is the variant has STARTBITERR bit inside MMCISTATUS + * register. */ struct variant_data { unsigned int clkreg; @@ -113,6 +115,7 @@ struct variant_data { bool qcom_dml; bool reversed_irq_handling; bool mmcimask1; + bool start_err; }; static struct variant_data variant_arm = { @@ -123,6 +126,7 @@ struct variant_data { .f_max = 100000000, .reversed_irq_handling = true, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_arm_extended_fifo = { @@ -132,6 +136,7 @@ struct variant_data { .pwrreg_powerup = MCI_PWR_UP, .f_max = 100000000, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_arm_extended_fifo_hwfc = { @@ -142,6 +147,7 @@ struct variant_data { .pwrreg_powerup = MCI_PWR_UP, .f_max = 100000000, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_u300 = { @@ -158,6 +164,7 @@ struct variant_data { .pwrreg_clkgate = true, .pwrreg_nopower = true, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_nomadik = { @@ -175,6 +182,7 @@ struct variant_data { .pwrreg_clkgate = true, .pwrreg_nopower = true, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_ux500 = { @@ -198,6 +206,7 @@ struct variant_data { .busy_detect_mask = MCI_ST_BUSYENDMASK, .pwrreg_nopower = true, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_ux500v2 = { @@ -223,6 +232,7 @@ struct variant_data { .busy_detect_mask = MCI_ST_BUSYENDMASK, .pwrreg_nopower = true, .mmcimask1 = true, + .start_err = true, }; static struct variant_data variant_qcom = { @@ -242,6 +252,7 @@ struct variant_data { .qcom_fifo = true, .qcom_dml = true, .mmcimask1 = true, + .start_err = true, }; /* Busy detection for the ST Micro variant */ @@ -935,8 +946,9 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) return; /* First check for errors */ - if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR| - MCI_TXUNDERRUN|MCI_RXOVERRUN)) { + if (status & (MCI_DATACRCFAIL | MCI_DATATIMEOUT | + (host->variant->start_err ? MCI_STARTBITERR : 0) | + MCI_TXUNDERRUN | MCI_RXOVERRUN)) { u32 remain, success; /* Terminate the DMA transfer */