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iopoll: Extend read_poll_timeout macro to support variable parameters

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This macro currently supports only one parameter. Based on Linux iopoll,
let's extend read_poll_timeout common API to allow multiple variable
parameters.

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
This commit is contained in:
Ariel D'Alessandro 2022-04-12 10:31:35 -03:00 committed by Stefano Babic
parent 01c67a381c
commit d7db0e6df3
3 changed files with 22 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
arch/arm/mach-socfpga/reset_manager_s10.c
View File

@ -80,9 +80,9 @@ void socfpga_bridges_reset(int enable)
~0);
/* Poll until all idleack to 0 */
read_poll_timeout(readl, socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_NOC_IDLEACK, reg, !reg, 1000,
300000);
read_poll_timeout(readl, reg, !reg, 1000, 300000,
socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_NOC_IDLEACK);
} else {
/* set idle request to all bridges */
writel(~0,
@ -93,18 +93,20 @@ void socfpga_bridges_reset(int enable)
writel(1, socfpga_get_sysmgr_addr() + SYSMGR_SOC64_NOC_TIMEOUT);
/* Poll until all idleack to 1 */
read_poll_timeout(readl, socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_NOC_IDLEACK, reg,
read_poll_timeout(readl, reg,
reg == (SYSMGR_NOC_H2F_MSK |
SYSMGR_NOC_LWH2F_MSK),
1000, 300000);
1000, 300000,
socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_NOC_IDLEACK);
/* Poll until all idlestatus to 1 */
read_poll_timeout(readl, socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_NOC_IDLESTATUS, reg,
read_poll_timeout(readl, reg,
reg == (SYSMGR_NOC_H2F_MSK |
SYSMGR_NOC_LWH2F_MSK),
1000, 300000);
1000, 300000,
socfpga_get_sysmgr_addr() +
SYSMGR_SOC64_NOC_IDLESTATUS);
/* Reset all bridges (except NOR DDR scheduler & F2S) */
setbits_le32(socfpga_get_rstmgr_addr() + RSTMGR_SOC64_BRGMODRST,

9
drivers/mmc/rockchip_sdhci.c
View File

@ -202,8 +202,8 @@ static void rk3399_emmc_phy_power_on(struct rockchip_emmc_phy *phy, u32 clock)
/* REN Enable on STRB Line for HS400 */
writel(RK_CLRSETBITS(0, 1 << 9), &phy->emmcphy_con[2]);
read_poll_timeout(readl, &phy->emmcphy_status, dllrdy,
PHYCTRL_DLL_LOCK_WO_TMOUT(dllrdy), 1, 5000);
read_poll_timeout(readl, dllrdy, PHYCTRL_DLL_LOCK_WO_TMOUT(dllrdy), 1,
5000, &phy->emmcphy_status);
}
static void rk3399_emmc_phy_power_off(struct rockchip_emmc_phy *phy)
@ -328,8 +328,9 @@ static int rk3568_sdhci_emmc_set_clock(struct sdhci_host *host, unsigned int clo
DWCMSHC_EMMC_DLL_START;
sdhci_writel(host, extra, DWCMSHC_EMMC_DLL_CTRL);
ret = read_poll_timeout(readl, host->ioaddr + DWCMSHC_EMMC_DLL_STATUS0,
val, DLL_LOCK_WO_TMOUT(val), 1, 500);
ret = read_poll_timeout(readl, val, DLL_LOCK_WO_TMOUT(val), 1,
500,
host->ioaddr + DWCMSHC_EMMC_DLL_STATUS0);
if (ret)
return ret;

12
include/linux/iopoll.h
View File

@ -14,11 +14,11 @@
/**
* read_poll_timeout - Periodically poll an address until a condition is met or a timeout occurs
* @op: accessor function (takes @addr as its only argument)
* @addr: Address to poll
* @val: Variable to read the value into
* @cond: Break condition (usually involving @val)
* @sleep_us: Maximum time to sleep in us
* @timeout_us: Timeout in us, 0 means never timeout
* @args: arguments for @op poll
*
* Returns 0 on success and -ETIMEDOUT upon a timeout. In either
* case, the last read value at @addr is stored in @val.
@ -26,15 +26,15 @@
* When available, you'll probably want to use one of the specialized
* macros defined below rather than this macro directly.
*/
#define read_poll_timeout(op, addr, val, cond, sleep_us, timeout_us) \
#define read_poll_timeout(op, val, cond, sleep_us, timeout_us, args...) \
({ \
unsigned long timeout = timer_get_us() + timeout_us; \
for (;;) { \
(val) = op(addr); \
(val) = op(args); \
if (cond) \
break; \
if (timeout_us && time_after(timer_get_us(), timeout)) { \
(val) = op(addr); \
(val) = op(args); \
break; \
} \
if (sleep_us) \
@ -44,13 +44,13 @@
})
#define readx_poll_sleep_timeout(op, addr, val, cond, sleep_us, timeout_us) \
read_poll_timeout(op, addr, val, cond, sleep_us, timeout_us)
read_poll_timeout(op, val, cond, sleep_us, timeout_us, addr)
#define readl_poll_sleep_timeout(addr, val, cond, sleep_us, timeout_us) \
readx_poll_sleep_timeout(readl, addr, val, cond, sleep_us, timeout_us)
#define readx_poll_timeout(op, addr, val, cond, timeout_us) \
read_poll_timeout(op, addr, val, cond, false, timeout_us)
read_poll_timeout(op, val, cond, false, timeout_us, addr)
#define readb_poll_timeout(addr, val, cond, timeout_us) \
readx_poll_timeout(readb, addr, val, cond, timeout_us)