| Message ID | ed866d3345a27b2c87b570562d9ad9132bca6062.1524465345.git.sean.wang@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 04/23/2018 08:42 AM, sean.wang@mediatek.com wrote: > From: Sean Wang <sean.wang@mediatek.com> > > Reuse the common helpers regmap_read_poll_timeout provided by Linux core > instead of an open-coded handling. > > v1 -> v2: > - use macro definitions MTK_POLL_DELAY_US and MTK_POLL_TIMEOUT for > arguments sleep_us and timeout_us passing in regmap_read_poll_timeout. > - remove unnecessary linux/iopoll.h being included in. > > Signed-off-by: Sean Wang <sean.wang@mediatek.com> > Cc: Matthias Brugger <matthias.bgg@gmail.com> > Cc: Ulf Hansson <ulf.hansson@linaro.org> > Cc: Weiyi Lu <weiyi.lu@mediatek.com> > --- > drivers/soc/mediatek/mtk-infracfg.c | 46 ++++++++++--------------------------- > 1 file changed, 12 insertions(+), 34 deletions(-) > pushed to v4.17-next/soc > diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c > index 8c310de..958861c 100644 > --- a/drivers/soc/mediatek/mtk-infracfg.c > +++ b/drivers/soc/mediatek/mtk-infracfg.c > @@ -17,6 +17,9 @@ > #include <linux/soc/mediatek/infracfg.h> > #include <asm/processor.h> > > +#define MTK_POLL_DELAY_US 10 > +#define MTK_POLL_TIMEOUT (jiffies_to_usecs(HZ)) > + > #define INFRA_TOPAXI_PROTECTEN 0x0220 > #define INFRA_TOPAXI_PROTECTSTA1 0x0228 > #define INFRA_TOPAXI_PROTECTEN_SET 0x0260 > @@ -37,7 +40,6 @@ > int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, > bool reg_update) > { > - unsigned long expired; > u32 val; > int ret; > > @@ -47,22 +49,11 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, > else > regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask); > > - expired = jiffies + HZ; > - > - while (1) { > - ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val); > - if (ret) > - return ret; > - > - if ((val & mask) == mask) > - break; > + ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1, > + val, (val & mask) == mask, > + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); > > - cpu_relax(); > - if (time_after(jiffies, expired)) > - return -EIO; > - } > - > - return 0; > + return ret; > } > > /** > @@ -80,30 +71,17 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, > int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask, > bool reg_update) > { > - unsigned long expired; > int ret; > + u32 val; > > if (reg_update) > regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0); > else > regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask); > > - expired = jiffies + HZ; > - > - while (1) { > - u32 val; > - > - ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val); > - if (ret) > - return ret; > - > - if (!(val & mask)) > - break; > - > - cpu_relax(); > - if (time_after(jiffies, expired)) > - return -EIO; > - } > + ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1, > + val, !(val & mask), > + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); > > - return 0; > + return ret; > } >
Hi Sean, On 04/23/2018 08:42 AM, sean.wang@mediatek.com wrote: > From: Sean Wang <sean.wang@mediatek.com> > > Reuse the common helpers regmap_read_poll_timeout provided by Linux core > instead of an open-coded handling. > > v1 -> v2: > - use macro definitions MTK_POLL_DELAY_US and MTK_POLL_TIMEOUT for > arguments sleep_us and timeout_us passing in regmap_read_poll_timeout. > - remove unnecessary linux/iopoll.h being included in. > I just realized that you wrote the changelog here, which will make it show up in the commit log. Thant's not what we want... (see below) > Signed-off-by: Sean Wang <sean.wang@mediatek.com> > Cc: Matthias Brugger <matthias.bgg@gmail.com> > Cc: Ulf Hansson <ulf.hansson@linaro.org> > Cc: Weiyi Lu <weiyi.lu@mediatek.com> > --- > drivers/soc/mediatek/mtk-infracfg.c | 46 ++++++++++--------------------------- > 1 file changed, 12 insertions(+), 34 deletions(-) > Please write your changelog here in the future. I'll fix that up in my tree now, but please remember the next time :) Thanks Matthias
diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c index 8c310de..958861c 100644 --- a/drivers/soc/mediatek/mtk-infracfg.c +++ b/drivers/soc/mediatek/mtk-infracfg.c @@ -17,6 +17,9 @@ #include <linux/soc/mediatek/infracfg.h> #include <asm/processor.h> +#define MTK_POLL_DELAY_US 10 +#define MTK_POLL_TIMEOUT (jiffies_to_usecs(HZ)) + #define INFRA_TOPAXI_PROTECTEN 0x0220 #define INFRA_TOPAXI_PROTECTSTA1 0x0228 #define INFRA_TOPAXI_PROTECTEN_SET 0x0260 @@ -37,7 +40,6 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, bool reg_update) { - unsigned long expired; u32 val; int ret; @@ -47,22 +49,11 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, else regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask); - expired = jiffies + HZ; - - while (1) { - ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val); - if (ret) - return ret; - - if ((val & mask) == mask) - break; + ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1, + val, (val & mask) == mask, + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); - cpu_relax(); - if (time_after(jiffies, expired)) - return -EIO; - } - - return 0; + return ret; } /** @@ -80,30 +71,17 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask, bool reg_update) { - unsigned long expired; int ret; + u32 val; if (reg_update) regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0); else regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask); - expired = jiffies + HZ; - - while (1) { - u32 val; - - ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val); - if (ret) - return ret; - - if (!(val & mask)) - break; - - cpu_relax(); - if (time_after(jiffies, expired)) - return -EIO; - } + ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1, + val, !(val & mask), + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); - return 0; + return ret; }