diff mbox series

[v3,3/7] clk: at91: usb: Add sam9x60 support

Message ID 20190402125056.21509-4-alexandre.belloni@bootlin.com (mailing list archive)
State Accepted, archived
Headers show
Series clk: at91: add sam9x60 pmc clock support | expand

Commit Message

Alexandre Belloni April 2, 2019, 12:50 p.m. UTC 
The sam9x60 USB clock supports four different parents, ensure they can be
selected.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/clk/at91/clk-usb.c | 33 +++++++++++++++++++++++++++------
 drivers/clk/at91/pmc.h     |  3 +++
 2 files changed, 30 insertions(+), 6 deletions(-)

Comments

Stephen Boyd April 25, 2019, 7:37 p.m. UTC | #1 
Quoting Alexandre Belloni (2019-04-02 05:50:52)
> The sam9x60 USB clock supports four different parents, ensure they can be
> selected.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---

Applied to clk-next
diff mbox series

Patch

diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
index 79ee1c760f2a..ebc37ee33518 100644
--- a/drivers/clk/at91/clk-usb.c
+++ b/drivers/clk/at91/clk-usb.c
@@ -23,9 +23,13 @@ 
 #define RM9200_USB_DIV_SHIFT	28
 #define RM9200_USB_DIV_TAB_SIZE	4
 
+#define SAM9X5_USBS_MASK	GENMASK(0, 0)
+#define SAM9X60_USBS_MASK	GENMASK(1, 0)
+
 struct at91sam9x5_clk_usb {
 	struct clk_hw hw;
 	struct regmap *regmap;
+	u32 usbs_mask;
 };
 
 #define to_at91sam9x5_clk_usb(hw) \
@@ -111,8 +115,7 @@  static int at91sam9x5_clk_usb_set_parent(struct clk_hw *hw, u8 index)
 	if (index > 1)
 		return -EINVAL;
 
-	regmap_update_bits(usb->regmap, AT91_PMC_USB, AT91_PMC_USBS,
-			   index ? AT91_PMC_USBS : 0);
+	regmap_update_bits(usb->regmap, AT91_PMC_USB, usb->usbs_mask, index);
 
 	return 0;
 }
@@ -124,7 +127,7 @@  static u8 at91sam9x5_clk_usb_get_parent(struct clk_hw *hw)
 
 	regmap_read(usb->regmap, AT91_PMC_USB, &usbr);
 
-	return usbr & AT91_PMC_USBS;
+	return usbr & usb->usbs_mask;
 }
 
 static int at91sam9x5_clk_usb_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -190,9 +193,10 @@  static const struct clk_ops at91sam9n12_usb_ops = {
 	.set_rate = at91sam9x5_clk_usb_set_rate,
 };
 
-struct clk_hw * __init
-at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
-			    const char **parent_names, u8 num_parents)
+static struct clk_hw * __init
+_at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
+			     const char **parent_names, u8 num_parents,
+			     u32 usbs_mask)
 {
 	struct at91sam9x5_clk_usb *usb;
 	struct clk_hw *hw;
@@ -212,6 +216,7 @@  at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
 
 	usb->hw.init = &init;
 	usb->regmap = regmap;
+	usb->usbs_mask = SAM9X5_USBS_MASK;
 
 	hw = &usb->hw;
 	ret = clk_hw_register(NULL, &usb->hw);
@@ -223,6 +228,22 @@  at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
 	return hw;
 }
 
+struct clk_hw * __init
+at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
+			    const char **parent_names, u8 num_parents)
+{
+	return _at91sam9x5_clk_register_usb(regmap, name, parent_names,
+					    num_parents, SAM9X5_USBS_MASK);
+}
+
+struct clk_hw * __init
+sam9x60_clk_register_usb(struct regmap *regmap, const char *name,
+			 const char **parent_names, u8 num_parents)
+{
+	return _at91sam9x5_clk_register_usb(regmap, name, parent_names,
+					    num_parents, SAM9X60_USBS_MASK);
+}
+
 struct clk_hw * __init
 at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
 			     const char *parent_name)
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index 4027306b904c..44345e4ab1c9 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -194,6 +194,9 @@  struct clk_hw * __init
 at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
 			     const char *parent_name);
 struct clk_hw * __init
+sam9x60_clk_register_usb(struct regmap *regmap, const char *name,
+			 const char **parent_names, u8 num_parents);
+struct clk_hw * __init
 at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
 			    const char *parent_name, const u32 *divisors);