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Subject[PATCH 06/14] pinctrl/abx500: align GPIO cluster boundaries
Date
From: Lee Jones <lee.jones@linaro.org>

Not quite sure how this ever worked. In ab8500_gpio_to_irq() the
GPIO for conversion is passed through as the second argument. If
GPIO13, which is a valid GPIO for IRQ functionality, was received;
it would be rejected by the following guard:

GPIO_IRQ_CLUSTER(5, 12, 0); /* GPIO numbers start from 1 */

if (offset >= cluster->start && offset <= cluster->end)
/* Valid GPIO for IRQ use */

Signed-off-by: Lee Jones <lee.jones@linaro.org>
[Augmented to account for off-by-one problem]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/pinctrl-ab8500.c | 6 +++---
drivers/pinctrl/pinctrl-ab8505.c | 10 +++++-----
drivers/pinctrl/pinctrl-ab8540.c | 4 ++--
drivers/pinctrl/pinctrl-ab9540.c | 8 ++++----
drivers/pinctrl/pinctrl-abx500.c | 6 ++++--
5 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-ab8500.c b/drivers/pinctrl/pinctrl-ab8500.c
index 2cd424e..67dc942 100644
--- a/drivers/pinctrl/pinctrl-ab8500.c
+++ b/drivers/pinctrl/pinctrl-ab8500.c
@@ -456,9 +456,9 @@ struct alternate_functions ab8500_alternate_functions[AB8500_GPIO_MAX_NUMBER + 1
* GPIO36 to GPIO41
*/
struct abx500_gpio_irq_cluster ab8500_gpio_irq_cluster[] = {
- GPIO_IRQ_CLUSTER(5, 12, 0), /* GPIO numbers start from 1 */
- GPIO_IRQ_CLUSTER(23, 24, 0),
- GPIO_IRQ_CLUSTER(35, 40, 0),
+ GPIO_IRQ_CLUSTER(6, 13, 0),
+ GPIO_IRQ_CLUSTER(24, 25, 0),
+ GPIO_IRQ_CLUSTER(36, 41, 0),
};

static struct abx500_pinctrl_soc_data ab8500_soc = {
diff --git a/drivers/pinctrl/pinctrl-ab8505.c b/drivers/pinctrl/pinctrl-ab8505.c
index 40dc3e1..825710a 100644
--- a/drivers/pinctrl/pinctrl-ab8505.c
+++ b/drivers/pinctrl/pinctrl-ab8505.c
@@ -349,11 +349,11 @@ struct alternate_functions ab8505_alternate_functions[AB8505_GPIO_MAX_NUMBER + 1
* GPIO52 to GPIO53
*/
struct abx500_gpio_irq_cluster ab8505_gpio_irq_cluster[] = {
- GPIO_IRQ_CLUSTER(9, 10, 0), /* GPIO numbers start from 1 */
- GPIO_IRQ_CLUSTER(12, 12, 0),
- GPIO_IRQ_CLUSTER(39, 40, 0),
- GPIO_IRQ_CLUSTER(49, 49, 0),
- GPIO_IRQ_CLUSTER(51, 52, 0),
+ GPIO_IRQ_CLUSTER(10, 11, 0),
+ GPIO_IRQ_CLUSTER(13, 13, 0),
+ GPIO_IRQ_CLUSTER(40, 41, 0),
+ GPIO_IRQ_CLUSTER(50, 50, 0),
+ GPIO_IRQ_CLUSTER(52, 53, 0),
};

static struct abx500_pinctrl_soc_data ab8505_soc = {
diff --git a/drivers/pinctrl/pinctrl-ab8540.c b/drivers/pinctrl/pinctrl-ab8540.c
index e75310d..0fcd943 100644
--- a/drivers/pinctrl/pinctrl-ab8540.c
+++ b/drivers/pinctrl/pinctrl-ab8540.c
@@ -377,8 +377,8 @@ static struct pullud ab8540_pullud = {
* GPIO51 to GPIO54
*/
struct abx500_gpio_irq_cluster ab8540_gpio_irq_cluster[] = {
- GPIO_IRQ_CLUSTER(42, 43, 2), /* GPIO numbers start from 1 */
- GPIO_IRQ_CLUSTER(50, 53, 0),
+ GPIO_IRQ_CLUSTER(43, 44, 2),
+ GPIO_IRQ_CLUSTER(51, 54, 0),
};

static struct abx500_pinctrl_soc_data ab8540_soc = {
diff --git a/drivers/pinctrl/pinctrl-ab9540.c b/drivers/pinctrl/pinctrl-ab9540.c
index 31fec3e..28dfb2e 100644
--- a/drivers/pinctrl/pinctrl-ab9540.c
+++ b/drivers/pinctrl/pinctrl-ab9540.c
@@ -455,10 +455,10 @@ struct alternate_functions ab9540alternate_functions[AB9540_GPIO_MAX_NUMBER + 1]
};

struct abx500_gpio_irq_cluster ab9540_gpio_irq_cluster[] = {
- GPIO_IRQ_CLUSTER(9, 12, 0), /* GPIO numbers start from 1 */
- GPIO_IRQ_CLUSTER(23, 24, 0),
- GPIO_IRQ_CLUSTER(39, 40, 0),
- GPIO_IRQ_CLUSTER(49, 53, 0),
+ GPIO_IRQ_CLUSTER(10, 13, 0),
+ GPIO_IRQ_CLUSTER(24, 25, 0),
+ GPIO_IRQ_CLUSTER(40, 41, 0),
+ GPIO_IRQ_CLUSTER(50, 54, 0),
};

static struct abx500_pinctrl_soc_data ab9540_soc = {
diff --git a/drivers/pinctrl/pinctrl-abx500.c b/drivers/pinctrl/pinctrl-abx500.c
index 9bdfcb9..a9e720f 100644
--- a/drivers/pinctrl/pinctrl-abx500.c
+++ b/drivers/pinctrl/pinctrl-abx500.c
@@ -272,6 +272,8 @@ static int abx500_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
static int abx500_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
struct abx500_pinctrl *pct = to_abx500_pinctrl(chip);
+ /* The AB8500 GPIO numbers are off by one */
+ int gpio = offset + 1;
int base = pct->irq_base;
int i;

@@ -279,8 +281,8 @@ static int abx500_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
struct abx500_gpio_irq_cluster *cluster =
&pct->irq_cluster[i];

- if (offset >= cluster->start && offset <= cluster->end)
- return base + offset - cluster->start;
+ if (gpio >= cluster->start && gpio <= cluster->end)
+ return base + gpio - cluster->start;

/* Advance by the number of gpios in this cluster */
base += cluster->end + cluster->offset - cluster->start + 1;
--
1.7.11.3


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