lkml.org 
[lkml]   [2017]   [Jul]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/6] pinctrl: uniphier: fix pin_config_get() for input-enable
Date
For LD11/LD20 SoCs (capable of per-pin input enable), iectrl bits are
located across multiple registers. So, the register offset must be
taken into account. Otherwise, wrong input-enable status is displayed.

While we here, rename the macro because it is a base address.

Fixes: aa543888ca8c ("pinctrl: uniphier: support per-pin input enable for new SoCs")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

drivers/pinctrl/uniphier/pinctrl-uniphier-core.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
index c649e835bd54..f2f0f9dcfec3 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
@@ -32,7 +32,7 @@
#define UNIPHIER_PINCTRL_DRV2CTRL_BASE 0x1900
#define UNIPHIER_PINCTRL_DRV3CTRL_BASE 0x1980
#define UNIPHIER_PINCTRL_PUPDCTRL_BASE 0x1a00
-#define UNIPHIER_PINCTRL_IECTRL 0x1d00
+#define UNIPHIER_PINCTRL_IECTRL_BASE 0x1d00

struct uniphier_pinctrl_priv {
struct pinctrl_desc pctldesc;
@@ -252,18 +252,21 @@ static int uniphier_conf_pin_input_enable_get(struct pinctrl_dev *pctldev,
{
struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
unsigned int iectrl = uniphier_pin_get_iectrl(desc->drv_data);
- unsigned int val;
+ unsigned int reg, mask, val;
int ret;

if (iectrl == UNIPHIER_PIN_IECTRL_NONE)
/* This pin is always input-enabled. */
return 0;

- ret = regmap_read(priv->regmap, UNIPHIER_PINCTRL_IECTRL, &val);
+ reg = UNIPHIER_PINCTRL_IECTRL_BASE + iectrl / 32 * 4;
+ mask = BIT(iectrl % 32);
+
+ ret = regmap_read(priv->regmap, reg, &val);
if (ret)
return ret;

- return val & BIT(iectrl) ? 0 : -EINVAL;
+ return val & mask ? 0 : -EINVAL;
}

static int uniphier_conf_pin_config_get(struct pinctrl_dev *pctldev,
@@ -456,7 +459,7 @@ static int uniphier_conf_pin_input_enable(struct pinctrl_dev *pctldev,
if (iectrl == UNIPHIER_PIN_IECTRL_NONE)
return enable ? 0 : -EINVAL;

- reg = UNIPHIER_PINCTRL_IECTRL + iectrl / 32 * 4;
+ reg = UNIPHIER_PINCTRL_IECTRL_BASE + iectrl / 32 * 4;
mask = BIT(iectrl % 32);

return regmap_update_bits(priv->regmap, reg, mask, enable ? mask : 0);
--
2.7.4
\
 
 \ /
  Last update: 2017-07-31 08:25    [W:0.104 / U:23.336 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site