Merge tag 'bitmap-for-6.19' of github.com:/norov/linux

Pull bitmap updates from Yury Norov:

 - Runtime field_{get,prep}() (Geert)

 - Rust ID pool updates (Alice)

 - min_t() simplification (David)

 - __sw_hweightN kernel-doc fixes (Andy)

 - cpumask.h headers cleanup (Andy)

* tag 'bitmap-for-6.19' of github.com:/norov/linux: (32 commits)
  rust_binder: use bitmap for allocation of handles
  rust: id_pool: do not immediately acquire new ids
  rust: id_pool: do not supply starting capacity
  rust: id_pool: rename IdPool::new() to with_capacity()
  rust: bitmap: add BitmapVec::new_inline()
  rust: bitmap: add MAX_LEN and MAX_INLINE_LEN constants
  cpumask: Don't use "proxy" headers
  soc: renesas: Use bitfield helpers
  clk: renesas: Use bitfield helpers
  ALSA: usb-audio: Convert to common field_{get,prep}() helpers
  soc: renesas: rz-sysc: Convert to common field_get() helper
  pinctrl: ma35: Convert to common field_{get,prep}() helpers
  iio: mlx90614: Convert to common field_{get,prep}() helpers
  iio: dac: Convert to common field_prep() helper
  gpio: aspeed: Convert to common field_{get,prep}() helpers
  EDAC/ie31200: Convert to common field_get() helper
  crypto: qat - convert to common field_get() helper
  clk: at91: Convert to common field_{get,prep}() helpers
  bitfield: Add non-constant field_{prep,get}() helpers
  bitfield: Add less-checking __FIELD_{GET,PREP}()
  ...

5 files changed, 12 insertions, 22 deletions

diff --git a/drivers/clk/at91/clk-peripheral.c b/drivers/clk/at91/clk-peripheral.c
index e700f40fd87f..e7208c47268b 100644
--- a/drivers/clk/at91/clk-peripheral.c
+++ b/drivers/clk/at91/clk-peripheral.c
@@ -3,6 +3,7 @@
  *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 5daa32c4cf25..543d7aee8d24 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -117,9 +117,6 @@ struct at91_clk_pms {
 	unsigned int parent;
 };
 
-#define field_get(_mask, _reg) (((_reg) & (_mask)) >> (ffs(_mask) - 1))
-#define field_prep(_mask, _val) (((_val) << (ffs(_mask) - 1)) & (_mask))
-
 #define ndck(a, s) (a[s - 1].id + 1)
 #define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1)
 
diff --git a/drivers/clk/renesas/clk-div6.c b/drivers/clk/renesas/clk-div6.c
index 3abd6e5400ad..f7b827b5e9b2 100644
--- a/drivers/clk/renesas/clk-div6.c
+++ b/drivers/clk/renesas/clk-div6.c
@@ -7,6 +7,7 @@
  * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/clk-provider.h>
 #include <linux/init.h>
 #include <linux/io.h>
@@ -171,8 +172,7 @@ static u8 cpg_div6_clock_get_parent(struct clk_hw *hw)
 	if (clock->src_mask == 0)
 		return 0;
 
-	hw_index = (readl(clock->reg) & clock->src_mask) >>
-		   __ffs(clock->src_mask);
+	hw_index = field_get(clock->src_mask, readl(clock->reg));
 	for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
 		if (clock->parents[i] == hw_index)
 			return i;
@@ -191,7 +191,7 @@ static int cpg_div6_clock_set_parent(struct clk_hw *hw, u8 index)
 	if (index >= clk_hw_get_num_parents(hw))
 		return -EINVAL;
 
-	src = clock->parents[index] << __ffs(clock->src_mask);
+	src = field_prep(clock->src_mask, clock->parents[index]);
 	writel((readl(clock->reg) & ~clock->src_mask) | src, clock->reg);
 	return 0;
 }
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c
index 10ae20489df9..b954278ddd9d 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.c
+++ b/drivers/clk/renesas/rcar-gen3-cpg.c
@@ -54,10 +54,8 @@ static unsigned long cpg_pll_clk_recalc_rate(struct clk_hw *hw,
 {
 	struct cpg_pll_clk *pll_clk = to_pll_clk(hw);
 	unsigned int mult;
-	u32 val;
 
-	val = readl(pll_clk->pllcr_reg) & CPG_PLLnCR_STC_MASK;
-	mult = (val >> __ffs(CPG_PLLnCR_STC_MASK)) + 1;
+	mult = FIELD_GET(CPG_PLLnCR_STC_MASK, readl(pll_clk->pllcr_reg)) + 1;
 
 	return parent_rate * mult * pll_clk->fixed_mult;
 }
@@ -94,7 +92,7 @@ static int cpg_pll_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 
 	val = readl(pll_clk->pllcr_reg);
 	val &= ~CPG_PLLnCR_STC_MASK;
-	val |= (mult - 1) << __ffs(CPG_PLLnCR_STC_MASK);
+	val |= FIELD_PREP(CPG_PLLnCR_STC_MASK, mult - 1);
 	writel(val, pll_clk->pllcr_reg);
 
 	for (i = 1000; i; i--) {
@@ -176,11 +174,7 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
 					   unsigned long parent_rate)
 {
 	struct cpg_z_clk *zclk = to_z_clk(hw);
-	unsigned int mult;
-	u32 val;
-
-	val = readl(zclk->reg) & zclk->mask;
-	mult = 32 - (val >> __ffs(zclk->mask));
+	unsigned int mult = 32 - field_get(zclk->mask, readl(zclk->reg));
 
 	return DIV_ROUND_CLOSEST_ULL((u64)parent_rate * mult,
 				     32 * zclk->fixed_div);
@@ -231,7 +225,8 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
 		return -EBUSY;
 
-	cpg_reg_modify(zclk->reg, zclk->mask, (32 - mult) << __ffs(zclk->mask));
+	cpg_reg_modify(zclk->reg, zclk->mask,
+		       field_prep(zclk->mask, 32 - mult));
 
 	/*
 	 * Set KICK bit in FRQCRB to update hardware setting and wait for
diff --git a/drivers/clk/renesas/rcar-gen4-cpg.c b/drivers/clk/renesas/rcar-gen4-cpg.c
index fb9a876aaba5..db3a0b8ef2b9 100644
--- a/drivers/clk/renesas/rcar-gen4-cpg.c
+++ b/drivers/clk/renesas/rcar-gen4-cpg.c
@@ -279,11 +279,7 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
 					   unsigned long parent_rate)
 {
 	struct cpg_z_clk *zclk = to_z_clk(hw);
-	unsigned int mult;
-	u32 val;
-
-	val = readl(zclk->reg) & zclk->mask;
-	mult = 32 - (val >> __ffs(zclk->mask));
+	unsigned int mult = 32 - field_get(zclk->mask, readl(zclk->reg));
 
 	return DIV_ROUND_CLOSEST_ULL((u64)parent_rate * mult,
 				     32 * zclk->fixed_div);
@@ -334,7 +330,8 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
 		return -EBUSY;
 
-	cpg_reg_modify(zclk->reg, zclk->mask, (32 - mult) << __ffs(zclk->mask));
+	cpg_reg_modify(zclk->reg, zclk->mask,
+		       field_prep(zclk->mask, 32 - mult));
 
 	/*
 	 * Set KICK bit in FRQCRB to update hardware setting and wait for