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Message-ID:
<GV2PR02MB11640C6AA4BEEE7A1B584411C8991A@GV2PR02MB11640.eurprd02.prod.outlook.com>
Date: Wed, 28 Jan 2026 11:06:32 +0000
From: Timothée Kremer <timothee.kremer@...tech.eu>
To: "mchehab@...nel.org" <mchehab@...nel.org>, "gregkh@...uxfoundation.org"
<gregkh@...uxfoundation.org>
CC: "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"linux-staging@...ts.linux.dev" <linux-staging@...ts.linux.dev>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] staging: media: av7110: cleanup sleep timers and dead code
Refactor sleep timers to use usleep_range() for short delays (<20ms)
while retaining msleep() for longer delays to maintain hardware stability.
Also remove dead code blocks wrapped in #if 0 to clean up the driver.
Signed-off-by: Timothée KREMER <timothee.kremer@...tech.eu>
---
drivers/staging/media/av7110/av7110_hw.c | 64 ++++--------------------
1 file changed, 10 insertions(+), 54 deletions(-)
diff --git a/drivers/staging/media/av7110/av7110_hw.c b/drivers/staging/media/av7110/av7110_hw.c
index bf8e6dca40e5..202d2383556f 100644
--- a/drivers/staging/media/av7110/av7110_hw.c
+++ b/drivers/staging/media/av7110/av7110_hw.c
@@ -95,28 +95,7 @@ u32 av7110_debiread(struct av7110 *av7110, u32 config, int addr, unsigned int co
return result;
}
-/* av7110 ARM core boot stuff */
-#if 0
-void av7110_reset_arm(struct av7110 *av7110)
-{
- saa7146_setgpio(av7110->dev, RESET_LINE, SAA7146_GPIO_OUTLO);
-
- /* Disable DEBI and GPIO irq */
- SAA7146_IER_DISABLE(av7110->dev, MASK_19 | MASK_03);
- SAA7146_ISR_CLEAR(av7110->dev, MASK_19 | MASK_03);
-
- saa7146_setgpio(av7110->dev, RESET_LINE, SAA7146_GPIO_OUTHI);
- msleep(30); /* the firmware needs some time to initialize */
-
- ARM_ResetMailBox(av7110);
-
- SAA7146_ISR_CLEAR(av7110->dev, MASK_19 | MASK_03);
- SAA7146_IER_ENABLE(av7110->dev, MASK_03);
-
- av7110->arm_ready = 1;
- dprintk(1, "reset ARM\n");
-}
-#endif /* 0 */
-
static int waitdebi(struct av7110 *av7110, int adr, int state)
{
@@ -312,7 +291,7 @@ int av7110_wait_msgstate(struct av7110 *av7110, u16 flags)
pr_err("%s(): timeout waiting for MSGSTATE %04x\n", __func__, stat & flags);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
return 0;
}
@@ -343,7 +322,7 @@ static int __av7110_send_fw_cmd(struct av7110 *av7110, u16 *buf, int length)
av7110->arm_errors++;
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
if (FW_VERSION(av7110->arm_app) <= 0x261f)
@@ -359,7 +338,7 @@ static int __av7110_send_fw_cmd(struct av7110 *av7110, u16 *buf, int length)
pr_err("%s(): timeout waiting for HANDSHAKE_REG\n", __func__);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
#endif
@@ -405,7 +384,7 @@ static int __av7110_send_fw_cmd(struct av7110 *av7110, u16 *buf, int length)
av7110->arm_errors++;
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
}
@@ -433,7 +412,7 @@ static int __av7110_send_fw_cmd(struct av7110 *av7110, u16 *buf, int length)
__func__, (buf[0] >> 8) & 0xff);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
stat = rdebi(av7110, DEBINOSWAP, MSGSTATE, 0, 2);
@@ -498,29 +477,6 @@ int av7110_fw_cmd(struct av7110 *av7110, int type, int com, int num, ...)
return ret;
}
-#if 0
-int av7110_send_ci_cmd(struct av7110 *av7110, u8 subcom, u8 *buf, u8 len)
-{
- int i, ret;
- u16 cmd[18] = { ((COMTYPE_COMMON_IF << 8) + subcom),
- 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
-
- dprintk(4, "%p\n", av7110);
-
- for (i = 0; i < len && i < 32; i++) {
- if (i % 2 == 0)
- cmd[(i / 2) + 2] = (u16)(buf[i]) << 8;
- else
- cmd[(i / 2) + 2] |= buf[i];
- }
-
- ret = av7110_send_fw_cmd(av7110, cmd, 18);
- if (ret && ret != -ERESTARTSYS)
- pr_err("%s(): error %d\n", __func__, ret);
- return ret;
-}
-#endif /* 0 */
-
int av7110_fw_request(struct av7110 *av7110, u16 *request_buf,
int request_buf_len, u16 *reply_buf, int reply_buf_len)
{
@@ -559,7 +515,7 @@ int av7110_fw_request(struct av7110 *av7110, u16 *request_buf,
return -ETIMEDOUT;
}
#ifdef _NOHANDSHAKE
- msleep(1)
+ usleep_range(1000, 2000);
#endif
}
@@ -574,7 +530,7 @@ int av7110_fw_request(struct av7110 *av7110, u16 *request_buf,
mutex_unlock(&av7110->dcomlock);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
#endif
@@ -719,7 +675,7 @@ static int FlushText(struct av7110 *av7110)
mutex_unlock(&av7110->dcomlock);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
mutex_unlock(&av7110->dcomlock);
return 0;
@@ -745,7 +701,7 @@ static int WriteText(struct av7110 *av7110, u8 win, u16 x, u16 y, char *buf)
mutex_unlock(&av7110->dcomlock);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
#ifndef _NOHANDSHAKE
start = jiffies;
@@ -758,7 +714,7 @@ static int WriteText(struct av7110 *av7110, u8 win, u16 x, u16 y, char *buf)
mutex_unlock(&av7110->dcomlock);
return -ETIMEDOUT;
}
- msleep(1)
+ usleep_range(1000, 2000);
}
#endif
for (i = 0; i < length / 2; i++)
--
2.52.0
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