| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20220517104712.24579-2-angelogioacchino.delregno@collabora.com>
Date: Tue, 17 May 2022 12:47:08 +0200
From: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
To: matthias.bgg@...il.com
Cc: linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
nfraprado@...labora.com, rex-bc.chen@...iatek.com,
zhiyong.tao@...iatek.com,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Subject: [PATCH v4 1/5] soc: mediatek: pwrap: Use readx_poll_timeout() instead of custom function
Function pwrap_wait_for_state() is a function that polls an address
through a helper function, but this is the very same operation that
the readx_poll_timeout macro means to do.
Convert all instances of calling pwrap_wait_for_state() to instead
use the read_poll_timeout macro.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
drivers/soc/mediatek/mtk-pmic-wrap.c | 60 +++++++++++++++-------------
1 file changed, 33 insertions(+), 27 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index bf39a64f3ecc..54a5300ab72b 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -13,6 +13,9 @@
#include <linux/regmap.h>
#include <linux/reset.h>
+#define PWRAP_POLL_DELAY_US 10
+#define PWRAP_POLL_TIMEOUT_US 10000
+
#define PWRAP_MT8135_BRIDGE_IORD_ARB_EN 0x4
#define PWRAP_MT8135_BRIDGE_WACS3_EN 0x10
#define PWRAP_MT8135_BRIDGE_INIT_DONE3 0x14
@@ -1241,27 +1244,14 @@ static bool pwrap_is_fsm_idle_and_sync_idle(struct pmic_wrapper *wrp)
(val & PWRAP_STATE_SYNC_IDLE0);
}
-static int pwrap_wait_for_state(struct pmic_wrapper *wrp,
- bool (*fp)(struct pmic_wrapper *))
-{
- unsigned long timeout;
-
- timeout = jiffies + usecs_to_jiffies(10000);
-
- do {
- if (time_after(jiffies, timeout))
- return fp(wrp) ? 0 : -ETIMEDOUT;
- if (fp(wrp))
- return 0;
- } while (1);
-}
-
static int pwrap_read16(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
{
+ bool tmp;
int ret;
u32 val;
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle);
+ ret = readx_poll_timeout(pwrap_is_fsm_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
pwrap_leave_fsm_vldclr(wrp);
return ret;
@@ -1273,7 +1263,8 @@ static int pwrap_read16(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
val = (adr >> 1) << 16;
pwrap_writel(wrp, val, PWRAP_WACS2_CMD);
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr);
+ ret = readx_poll_timeout(pwrap_is_fsm_vldclr, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret)
return ret;
@@ -1290,11 +1281,14 @@ static int pwrap_read16(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
static int pwrap_read32(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
{
+ bool tmp;
int ret, msb;
*rdata = 0;
for (msb = 0; msb < 2; msb++) {
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle);
+ ret = readx_poll_timeout(pwrap_is_fsm_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
+
if (ret) {
pwrap_leave_fsm_vldclr(wrp);
return ret;
@@ -1303,7 +1297,8 @@ static int pwrap_read32(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
pwrap_writel(wrp, ((msb << 30) | (adr << 16)),
PWRAP_WACS2_CMD);
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_vldclr);
+ ret = readx_poll_timeout(pwrap_is_fsm_vldclr, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret)
return ret;
@@ -1323,9 +1318,11 @@ static int pwrap_read(struct pmic_wrapper *wrp, u32 adr, u32 *rdata)
static int pwrap_write16(struct pmic_wrapper *wrp, u32 adr, u32 wdata)
{
+ bool tmp;
int ret;
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle);
+ ret = readx_poll_timeout(pwrap_is_fsm_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
pwrap_leave_fsm_vldclr(wrp);
return ret;
@@ -1344,10 +1341,12 @@ static int pwrap_write16(struct pmic_wrapper *wrp, u32 adr, u32 wdata)
static int pwrap_write32(struct pmic_wrapper *wrp, u32 adr, u32 wdata)
{
+ bool tmp;
int ret, msb, rdata;
for (msb = 0; msb < 2; msb++) {
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle);
+ ret = readx_poll_timeout(pwrap_is_fsm_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
pwrap_leave_fsm_vldclr(wrp);
return ret;
@@ -1388,6 +1387,7 @@ static int pwrap_regmap_write(void *context, u32 adr, u32 wdata)
static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
{
+ bool tmp;
int ret, i;
pwrap_writel(wrp, 0, PWRAP_HIPRIO_ARB_EN);
@@ -1407,7 +1407,8 @@ static int pwrap_reset_spislave(struct pmic_wrapper *wrp)
pwrap_writel(wrp, wrp->master->spi_w | PWRAP_MAN_CMD_OP_OUTS,
PWRAP_MAN_CMD);
- ret = pwrap_wait_for_state(wrp, pwrap_is_sync_idle);
+ ret = readx_poll_timeout(pwrap_is_sync_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
return ret;
@@ -1458,14 +1459,15 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp)
static int pwrap_init_dual_io(struct pmic_wrapper *wrp)
{
int ret;
+ bool tmp;
u32 rdata;
/* Enable dual IO mode */
pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_DIO_EN], 1);
/* Check IDLE & INIT_DONE in advance */
- ret = pwrap_wait_for_state(wrp,
- pwrap_is_fsm_idle_and_sync_idle);
+ ret = readx_poll_timeout(pwrap_is_fsm_idle_and_sync_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
dev_err(wrp->dev, "%s fail, ret=%d\n", __func__, ret);
return ret;
@@ -1570,6 +1572,7 @@ static bool pwrap_is_pmic_cipher_ready(struct pmic_wrapper *wrp)
static int pwrap_init_cipher(struct pmic_wrapper *wrp)
{
int ret;
+ bool tmp;
u32 rdata = 0;
pwrap_writel(wrp, 0x1, PWRAP_CIPHER_SWRST);
@@ -1624,14 +1627,16 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
}
/* wait for cipher data ready@AP */
- ret = pwrap_wait_for_state(wrp, pwrap_is_cipher_ready);
+ ret = readx_poll_timeout(pwrap_is_cipher_ready, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
dev_err(wrp->dev, "cipher data ready@AP fail, ret=%d\n", ret);
return ret;
}
/* wait for cipher data ready@...C */
- ret = pwrap_wait_for_state(wrp, pwrap_is_pmic_cipher_ready);
+ ret = readx_poll_timeout(pwrap_is_pmic_cipher_ready, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
dev_err(wrp->dev,
"timeout waiting for cipher data ready@...C\n");
@@ -1640,7 +1645,8 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
/* wait for cipher mode idle */
pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_MODE], 0x1);
- ret = pwrap_wait_for_state(wrp, pwrap_is_fsm_idle_and_sync_idle);
+ ret = readx_poll_timeout(pwrap_is_fsm_idle_and_sync_idle, wrp, tmp, tmp,
+ PWRAP_POLL_DELAY_US, PWRAP_POLL_TIMEOUT_US);
if (ret) {
dev_err(wrp->dev, "cipher mode idle fail, ret=%d\n", ret);
return ret;
--
2.35.1
Powered by blists - more mailing lists