From: "Dr. David Alan Gilbert" <linux@treblig.org>

sm501_find_clock() was added in 2007 as part of
commit b6d6454fdb66 ("[PATCH] mfd: SM501 core driver")
but hasn't been used.

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
---
v2
  Clean up the header (as per Lee's review)

 drivers/mfd/sm501.c   | 43 -------------------------------------------
 include/linux/sm501.h |  3 ---
 2 files changed, 46 deletions(-)

diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 7ee293b09f62..bdeea0047e1b 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -631,49 +631,6 @@ unsigned long sm501_set_clock(struct device *dev,
 
 EXPORT_SYMBOL_GPL(sm501_set_clock);
 
-/* sm501_find_clock
- *
- * finds the closest available frequency for a given clock
-*/
-
-unsigned long sm501_find_clock(struct device *dev,
-			       int clksrc,
-			       unsigned long req_freq)
-{
-	struct sm501_devdata *sm = dev_get_drvdata(dev);
-	unsigned long sm501_freq; /* the frequency achieveable by the 501 */
-	struct sm501_clock to;
-
-	switch (clksrc) {
-	case SM501_CLOCK_P2XCLK:
-		if (sm->rev >= 0xC0) {
-			/* SM502 -> use the programmable PLL */
-			sm501_freq = (sm501_calc_pll(2 * req_freq,
-						     &to, 5) / 2);
-		} else {
-			sm501_freq = (sm501_select_clock(2 * req_freq,
-							 &to, 5) / 2);
-		}
-		break;
-
-	case SM501_CLOCK_V2XCLK:
-		sm501_freq = (sm501_select_clock(2 * req_freq, &to, 3) / 2);
-		break;
-
-	case SM501_CLOCK_MCLK:
-	case SM501_CLOCK_M1XCLK:
-		sm501_freq = sm501_select_clock(req_freq, &to, 3);
-		break;
-
-	default:
-		sm501_freq = 0;		/* error */
-	}
-
-	return sm501_freq;
-}
-
-EXPORT_SYMBOL_GPL(sm501_find_clock);
-
 static struct sm501_device *to_sm_device(struct platform_device *pdev)
 {
 	return container_of(pdev, struct sm501_device, pdev);
diff --git a/include/linux/sm501.h b/include/linux/sm501.h
index 2f3488b2875d..bcda27a46e7a 100644
--- a/include/linux/sm501.h
+++ b/include/linux/sm501.h
@@ -12,9 +12,6 @@ extern int sm501_unit_power(struct device *dev,
 extern unsigned long sm501_set_clock(struct device *dev,
 				     int clksrc, unsigned long freq);
 
-extern unsigned long sm501_find_clock(struct device *dev,
-				      int clksrc, unsigned long req_freq);
-
 /* sm501_misc_control
  *
  * Modify the SM501's MISC_CONTROL register
-- 
2.49.0

On Fri, 09 May 2025 18:35:20 +0100, linux@treblig.org wrote:
> sm501_find_clock() was added in 2007 as part of
> commit b6d6454fdb66 ("[PATCH] mfd: SM501 core driver")
> but hasn't been used.
> 
> Remove it.
> 
> 
> [...]

Applied, thanks!

[1/1] mfd: sm501: Remove unused sm501_find_clock
      commit: b6d21359b036bf48ef94757b45cf691b89ec139a

--
Lee Jones [李琼斯]