| Message ID | 871u2jz33t.wl%kuninori.morimoto.gx@renesas.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hello. On 14-11-2013 14:31, Kuninori Morimoto wrote: > One of Renesas SDHI chip needs workaround to use it, > and, we can judge it based on chip version. > This patch adds very quick-hack workaround method, > since we still don't know how many chips > need workaround in the future. > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > --- > drivers/mmc/host/sh_mobile_sdhi.c | 11 +++++++++++ > include/linux/mmc/tmio.h | 1 + > 2 files changed, 12 insertions(+) > > diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c > index f1e35a7..d241d86 100644 > --- a/drivers/mmc/host/sh_mobile_sdhi.c > +++ b/drivers/mmc/host/sh_mobile_sdhi.c > @@ -33,6 +33,8 @@ > > #include "tmio_mmc.h" > > +#define EXT_ACC 0xe4 > + Why not #define it in the tmio.h? It already contains SDHI specific register, CTL_DMA_ENABLE... [...] > diff --git a/include/linux/mmc/tmio.h b/include/linux/mmc/tmio.h > index a1c1f32..84d9053 100644 > --- a/include/linux/mmc/tmio.h > +++ b/include/linux/mmc/tmio.h > @@ -33,6 +33,7 @@ > #define CTL_SDIO_IRQ_MASK 0x38 > #define CTL_DMA_ENABLE 0xd8 > #define CTL_RESET_SD 0xe0 > +#define CTL_VERSION 0xe2 > #define CTL_SDIO_REGS 0x100 > #define CTL_CLK_AND_WAIT_CTL 0x138 > #define CTL_RESET_SDIO 0x1e0 WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi > > One of Renesas SDHI chip needs workaround to use it, > > and, we can judge it based on chip version. > > This patch adds very quick-hack workaround method, > > since we still don't know how many chips > > need workaround in the future. > > > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > > --- > > drivers/mmc/host/sh_mobile_sdhi.c | 11 +++++++++++ > > include/linux/mmc/tmio.h | 1 + > > 2 files changed, 12 insertions(+) > > > > diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c > > index f1e35a7..d241d86 100644 > > --- a/drivers/mmc/host/sh_mobile_sdhi.c > > +++ b/drivers/mmc/host/sh_mobile_sdhi.c > > @@ -33,6 +33,8 @@ > > > > #include "tmio_mmc.h" > > > > +#define EXT_ACC 0xe4 > > + > > Why not #define it in the tmio.h? It already contains SDHI specific > register, CTL_DMA_ENABLE... I'm not sure which approach is correct. I will follow Maintainer's decision Best regards --- Kuninori Morimoto -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index f1e35a7..d241d86 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -33,6 +33,8 @@ #include "tmio_mmc.h" +#define EXT_ACC 0xe4 + struct sh_mobile_sdhi_of_data { unsigned long tmio_flags; }; @@ -137,6 +139,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) int irq, ret, i = 0; bool multiplexed_isr = true; struct tmio_mmc_dma *dma_priv; + u16 ver; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) @@ -219,6 +222,14 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev) goto eprobe; /* + * FIXME: + * this Workaround can be more clever method + */ + ver = sd_ctrl_read16(host, CTL_VERSION); + if (ver == 0xCB0D) + sd_ctrl_write16(host, EXT_ACC, 1); + + /* * Allow one or more specific (named) ISRs or * one or more multiplexed (un-named) ISRs. */ diff --git a/include/linux/mmc/tmio.h b/include/linux/mmc/tmio.h index a1c1f32..84d9053 100644 --- a/include/linux/mmc/tmio.h +++ b/include/linux/mmc/tmio.h @@ -33,6 +33,7 @@ #define CTL_SDIO_IRQ_MASK 0x38 #define CTL_DMA_ENABLE 0xd8 #define CTL_RESET_SD 0xe0 +#define CTL_VERSION 0xe2 #define CTL_SDIO_REGS 0x100 #define CTL_CLK_AND_WAIT_CTL 0x138 #define CTL_RESET_SDIO 0x1e0
One of Renesas SDHI chip needs workaround to use it, and, we can judge it based on chip version. This patch adds very quick-hack workaround method, since we still don't know how many chips need workaround in the future. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> --- drivers/mmc/host/sh_mobile_sdhi.c | 11 +++++++++++ include/linux/mmc/tmio.h | 1 + 2 files changed, 12 insertions(+)