[PATCH v3 08/13] pinctrl: mvebu: armada-370: provide generic mpp callbacks

[Sebastian Hesselbarth]

We want to get rid of passing register addresses to common pinctrl
driver, so provide set/get callbacks for generic mpp pins that will
be used later.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
---
Cc: Linus Walleij <linus.walleij at linaro.org> 
Cc: Jason Cooper <jason at lakedaemon.net> 
Cc: Andrew Lunn <andrew at lunn.ch>
Cc: Gregory Clement <gregory.clement at free-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
---
 drivers/pinctrl/mvebu/pinctrl-armada-370.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-370.c b/drivers/pinctrl/mvebu/pinctrl-armada-370.c
index ae1f760cbdd2..bcde42ce598f 100644
--- a/drivers/pinctrl/mvebu/pinctrl-armada-370.c
+++ b/drivers/pinctrl/mvebu/pinctrl-armada-370.c
@@ -23,6 +23,30 @@
 
 #include "pinctrl-mvebu.h"
 
+static void __iomem *mpp_base;
+
+static int armada_370_mpp_ctrl_get(unsigned 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(mpp_base + off) >> shift) & MVEBU_MPP_MASK;
+
+	return 0;
+}
+
+static int armada_370_mpp_ctrl_set(unsigned 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(mpp_base + off) & ~(MVEBU_MPP_MASK << shift);
+	writel(reg | (config << shift), mpp_base + off);
+
+	return 0;
+}
+
 static struct mvebu_mpp_mode mv88f6710_mpp_modes[] = {
 	MPP_MODE(0,
 	   MPP_FUNCTION(0x0, "gpio", NULL),
-- 
1.8.5.3