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authorViresh Kumar <viresh.kumar@st.com>2012-03-30 11:25:40 +0530
committerLinus Walleij <linus.walleij@linaro.org>2012-04-18 13:53:10 +0200
commitd1e90e9e7467dbfe521b25ba79f520bf676ebc36 (patch)
tree2c4a2b8bfa2a984cb57a781b034a204a12fcc4b6 /drivers/pinctrl/pinctrl-u300.c
parent122dbe7e58c7d064a17eefd33205227e6bce85ca (diff)
downloadtalos-obmc-linux-d1e90e9e7467dbfe521b25ba79f520bf676ebc36.tar.gz
talos-obmc-linux-d1e90e9e7467dbfe521b25ba79f520bf676ebc36.zip
pinctrl: replace list_*() with get_*_count()
Most of the SoC drivers implement list_groups() and list_functions() routines for pinctrl and pinmux. These routines continue returning zero until the selector argument is greater than total count of available groups or functions. This patch replaces these list_*() routines with get_*_count() routines, which returns the number of available selection for SoC driver. pinctrl layer will use this value to check the range it can choose. This patch fixes all user drivers for this change. There are other routines in user drivers, which have checks to check validity of selector passed to them. It is also no more required and hence removed. Documentation updated as well. Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> [Folded in fix and fixed a minor merge artifact manually] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-u300.c')
-rw-r--r--drivers/pinctrl/pinctrl-u300.c20
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/pinctrl/pinctrl-u300.c b/drivers/pinctrl/pinctrl-u300.c
index 26eb8ccd72d5..05d029911be6 100644
--- a/drivers/pinctrl/pinctrl-u300.c
+++ b/drivers/pinctrl/pinctrl-u300.c
@@ -836,18 +836,14 @@ static const struct u300_pin_group u300_pin_groups[] = {
},
};
-static int u300_list_groups(struct pinctrl_dev *pctldev, unsigned selector)
+static int u300_get_groups_count(struct pinctrl_dev *pctldev)
{
- if (selector >= ARRAY_SIZE(u300_pin_groups))
- return -EINVAL;
- return 0;
+ return ARRAY_SIZE(u300_pin_groups);
}
static const char *u300_get_group_name(struct pinctrl_dev *pctldev,
unsigned selector)
{
- if (selector >= ARRAY_SIZE(u300_pin_groups))
- return NULL;
return u300_pin_groups[selector].name;
}
@@ -855,8 +851,6 @@ static int u300_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector,
const unsigned **pins,
unsigned *num_pins)
{
- if (selector >= ARRAY_SIZE(u300_pin_groups))
- return -EINVAL;
*pins = u300_pin_groups[selector].pins;
*num_pins = u300_pin_groups[selector].num_pins;
return 0;
@@ -869,7 +863,7 @@ static void u300_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
}
static struct pinctrl_ops u300_pctrl_ops = {
- .list_groups = u300_list_groups,
+ .get_groups_count = u300_get_groups_count,
.get_group_name = u300_get_group_name,
.get_group_pins = u300_get_group_pins,
.pin_dbg_show = u300_pin_dbg_show,
@@ -991,11 +985,9 @@ static void u300_pmx_disable(struct pinctrl_dev *pctldev, unsigned selector,
u300_pmx_endisable(upmx, selector, false);
}
-static int u300_pmx_list_funcs(struct pinctrl_dev *pctldev, unsigned selector)
+static int u300_pmx_get_funcs_count(struct pinctrl_dev *pctldev)
{
- if (selector >= ARRAY_SIZE(u300_pmx_functions))
- return -EINVAL;
- return 0;
+ return ARRAY_SIZE(u300_pmx_functions);
}
static const char *u300_pmx_get_func_name(struct pinctrl_dev *pctldev,
@@ -1014,7 +1006,7 @@ static int u300_pmx_get_groups(struct pinctrl_dev *pctldev, unsigned selector,
}
static struct pinmux_ops u300_pmx_ops = {
- .list_functions = u300_pmx_list_funcs,
+ .get_functions_count = u300_pmx_get_funcs_count,
.get_function_name = u300_pmx_get_func_name,
.get_function_groups = u300_pmx_get_groups,
.enable = u300_pmx_enable,
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