diff mbox

[v4,05/16] pinctrl: mvebu: add common mpp reg helper to mvebu pinctrl include

Message ID 1393165274-32492-6-git-send-email-sebastian.hesselbarth@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sebastian Hesselbarth Feb. 23, 2014, 2:21 p.m. UTC 
This adds some defines and helper functions for the common mpp reg
layout to mvebu pinctrl include.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
---
Changelog:
v3->v4:
- add helper functions provided by Thomas Petazzoni

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/pinctrl/mvebu/pinctrl-mvebu.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

Comments

Linus Walleij Feb. 24, 2014, 10:08 a.m. UTC | #1 
On Sun, Feb 23, 2014 at 3:21 PM, Sebastian Hesselbarth
<sebastian.hesselbarth@gmail.com> wrote:

> This adds some defines and helper functions for the common mpp reg
> layout to mvebu pinctrl include.
>
> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Tested-by: Andrew Lunn <andrew@lunn.ch>
> ---
> Changelog:
> v3->v4:
> - add helper functions provided by Thomas Petazzoni

Patch applied. I like the looks of these helpers.

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/drivers/pinctrl/mvebu/pinctrl-mvebu.h b/drivers/pinctrl/mvebu/pinctrl-mvebu.h
index b20d1d778c75..c73f4eea62ac 100644
--- a/drivers/pinctrl/mvebu/pinctrl-mvebu.h
+++ b/drivers/pinctrl/mvebu/pinctrl-mvebu.h
@@ -186,6 +186,34 @@  struct mvebu_pinctrl_soc_info {
 		.npins = _npins,				\
 	}
 
+#define MVEBU_MPPS_PER_REG	8
+#define MVEBU_MPP_BITS		4
+#define MVEBU_MPP_MASK		0xf
+
+static inline int default_mpp_ctrl_get(void __iomem *base, unsigned int pid,
+				       unsigned long *config)
+{
+	unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+	unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+
+	*config = (readl(base + off) >> shift) & MVEBU_MPP_MASK;
+
+	return 0;
+}
+
+static inline int default_mpp_ctrl_set(void __iomem *base, unsigned int pid,
+				       unsigned long config)
+{
+	unsigned off = (pid / MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+	unsigned shift = (pid % MVEBU_MPPS_PER_REG) * MVEBU_MPP_BITS;
+	unsigned long reg;
+
+	reg = readl(base + off) & ~(MVEBU_MPP_MASK << shift);
+	writel(reg | (config << shift), base + off);
+
+	return 0;
+}
+
 int mvebu_pinctrl_probe(struct platform_device *pdev);
 int mvebu_pinctrl_remove(struct platform_device *pdev);