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| author | Sean Wang <sean.wang@mediatek.com> | 2018-04-23 14:42:45 +0800 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2018-05-14 12:19:25 +0200 |
| commit | 090c6243b14b909b2136fb40ee084faf842165d2 (patch) | |
| tree | 44cf192462587cff6ae5770a7340e527be5ce33c /drivers/soc | |
| parent | 4a58732c7c41c5a33b23556a2481d8a989060b4e (diff) | |
| download | linux-090c6243b14b909b2136fb40ee084faf842165d2.tar.gz linux-090c6243b14b909b2136fb40ee084faf842165d2.tar.bz2 linux-090c6243b14b909b2136fb40ee084faf842165d2.zip | |
soc: mediatek: reuse regmap_read_poll_timeout helpers
Reuse the common helpers regmap_read_poll_timeout provided by Linux core
instead of an open-coded handling.
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>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/mediatek/mtk-infracfg.c | 46 |
1 files changed, 12 insertions, 34 deletions
diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c index 8c310de01e93..958861c9e6ee 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; } |