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drivers: soc: qcom: crm: Add delay during channel switch

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Add udelay() between retries for channel switch to complete.

While at this also fix the condition to check valid perf_ol
data and correct MAX_SW_DRV_PWR_STATES value.

Change-Id: I65e464ce2614f4461f438041ec5b50dfde2dba55
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
This commit is contained in:
Maulik Shah 2022-09-27 11:43:34 +05:30
parent 6e308e1672
commit 4365c84d25
1 changed files with 9 additions and 2 deletions
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11
drivers/soc/qcom/crm.c
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@ -5,6 +5,7 @@
#define pr_fmt(fmt) "%s " fmt, KBUILD_MODNAME
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/iopoll.h>
@ -78,7 +79,7 @@
#define CHN_BEHAVE_BIT BIT(0)
/* SW DRV has ACTIVE, SLEEP and WAKE PWR STATES */
#define MAX_SW_DRV_PWR_STATES 2
#define MAX_SW_DRV_PWR_STATES 3
/* Time out for ACTIVE Only PWR STATE completion IRQ */
#define CRM_TIMEOUT_MS 5000
@ -391,6 +392,12 @@ int crm_channel_switch_complete(const struct crm_drv *drv, u32 ch)
sts &= CH1_CHN_BUSY;
retry--;
/*
* Wait till all the votes are applied to new
* channel during channel switch.
* Maximum delay of 5 msec.
*/
udelay(100);
} while ((sts != BIT(ch)) && retry);
if (!retry)
@ -695,7 +702,7 @@ static bool crm_is_invalid_cmd(struct crm_drv *drv, u32 vcd_type, const struct c
ret = true;
else if (vcd_type == BW_VOTE_VCD && !(data & BW_VOTE_VALID))
ret = true;
else if (vcd_type == PERF_OL_VCD && !(data & ~PERF_OL_VALUE_BITS))
else if (vcd_type == PERF_OL_VCD && (data & ~PERF_OL_VALUE_BITS))
ret = true;
else
ret = false;