Palmas charger has 16 GPIOs
add palmas_gpio_[read|write|update] api to take account
second bank of GPIOs
Signed-off-by: Ian Lartey <[email protected]>
Signed-off-by: Graeme Gregory <[email protected]>
---
drivers/gpio/gpio-palmas.c | 75 ++++++++++++++++++++++++++++++++++++-------
include/linux/mfd/palmas.h | 12 ++++++-
2 files changed, 73 insertions(+), 14 deletions(-)
diff --git a/drivers/gpio/gpio-palmas.c b/drivers/gpio/gpio-palmas.c
index e3a4e56..443802a 100644
--- a/drivers/gpio/gpio-palmas.c
+++ b/drivers/gpio/gpio-palmas.c
@@ -1,5 +1,5 @@
/*
- * TI Palma series PMIC's GPIO driver.
+ * TI Palmas series PMIC's GPIO driver.
*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
@@ -31,6 +31,36 @@ struct palmas_gpio {
struct palmas *palmas;
};
+static int palmas_gpio_read(struct palmas *palmas, unsigned int reg,
+ int gpio, unsigned int *dest)
+{
+ /* registers for second bank are identical and offset by 0x9 */
+ if (gpio > 7)
+ reg += PALMAS_GPIO_DATA_IN2;
+
+ return palmas_read(palmas, PALMAS_GPIO_BASE, reg, dest);
+}
+
+static int palmas_gpio_write(struct palmas *palmas, unsigned int reg,
+ int gpio, unsigned int data)
+{
+ /* registers for second bank are identical and offset by 0x9 */
+ if (gpio > 7)
+ reg += PALMAS_GPIO_DATA_IN2;
+
+ return palmas_write(palmas, PALMAS_GPIO_BASE, reg, data);
+}
+
+static int palmas_gpio_update_bits(struct palmas *palmas, unsigned int reg,
+ int gpio, unsigned int mask, unsigned int data)
+{
+ /* registers for second bank are identical and offset by 0x9 */
+ if (gpio > 7)
+ reg += PALMAS_GPIO_DATA_IN2;
+
+ return palmas_update_bits(palmas, PALMAS_GPIO_BASE, reg, mask, data);
+}
+
static inline struct palmas_gpio *to_palmas_gpio(struct gpio_chip *chip)
{
return container_of(chip, struct palmas_gpio, gpio_chip);
@@ -43,12 +73,12 @@ static int palmas_gpio_get(struct gpio_chip *gc, unsigned offset)
unsigned int val;
int ret;
- ret = palmas_read(palmas, PALMAS_GPIO_BASE, PALMAS_GPIO_DATA_IN, &val);
+ ret = palmas_gpio_read(palmas, PALMAS_GPIO_DATA_IN, offset, &val);
if (ret < 0) {
dev_err(gc->dev, "GPIO_DATA_IN read failed, err = %d\n", ret);
return ret;
}
- return !!(val & BIT(offset));
+ return !!(val & BIT(offset % 8));
}
static void palmas_gpio_set(struct gpio_chip *gc, unsigned offset,
@@ -59,11 +89,11 @@ static void palmas_gpio_set(struct gpio_chip *gc, unsigned offset,
int ret;
if (value)
- ret = palmas_write(palmas, PALMAS_GPIO_BASE,
- PALMAS_GPIO_SET_DATA_OUT, BIT(offset));
+ ret = palmas_gpio_write(palmas, PALMAS_GPIO_SET_DATA_OUT,
+ offset, BIT(offset % 8));
else
- ret = palmas_write(palmas, PALMAS_GPIO_BASE,
- PALMAS_GPIO_CLEAR_DATA_OUT, BIT(offset));
+ ret = palmas_gpio_write(palmas, PALMAS_GPIO_CLEAR_DATA_OUT,
+ offset, BIT(offset % 8));
if (ret < 0)
dev_err(gc->dev, "%s write failed, err = %d\n",
(value) ? "GPIO_SET_DATA_OUT" : "GPIO_CLEAR_DATA_OUT",
@@ -80,8 +110,8 @@ static int palmas_gpio_output(struct gpio_chip *gc, unsigned offset,
/* Set the initial value */
palmas_gpio_set(gc, offset, value);
- ret = palmas_update_bits(palmas, PALMAS_GPIO_BASE,
- PALMAS_GPIO_DATA_DIR, BIT(offset), BIT(offset));
+ ret = palmas_gpio_update_bits(palmas, PALMAS_GPIO_DATA_DIR,
+ offset, 1 << (offset % 8), 1 << (offset % 8));
if (ret < 0)
dev_err(gc->dev, "GPIO_DATA_DIR write failed, err = %d\n", ret);
return ret;
@@ -93,8 +123,8 @@ static int palmas_gpio_input(struct gpio_chip *gc, unsigned offset)
struct palmas *palmas = pg->palmas;
int ret;
- ret = palmas_update_bits(palmas, PALMAS_GPIO_BASE,
- PALMAS_GPIO_DATA_DIR, BIT(offset), 0);
+ ret = palmas_gpio_update_bits(palmas, PALMAS_GPIO_DATA_DIR,
+ offset, 1 << (offset % 8), 0);
if (ret < 0)
dev_err(gc->dev, "GPIO_DATA_DIR write failed, err = %d\n", ret);
return ret;
@@ -108,7 +138,21 @@ static int palmas_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
return palmas_irq_get_virq(palmas, PALMAS_GPIO_0_IRQ + offset);
}
-static int palmas_gpio_probe(struct platform_device *pdev)
+static int palmas_gpio_set_debounce(struct gpio_chip *gc, unsigned offset,
+ unsigned debounce)
+{
+ struct palmas_gpio *palmas_gpio = to_palmas_gpio(gc);
+ struct palmas *palmas = palmas_gpio->palmas;
+ unsigned int data = 0;
+
+ if (debounce)
+ data = 0xff;
+
+ return palmas_gpio_update_bits(palmas, PALMAS_GPIO_DEBOUNCE_EN,
+ offset, 1 << (offset % 8), data);
+}
+
+static int palmas_gpio_probe(struct platform_device *pdev)
{
struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
struct palmas_platform_data *palmas_pdata;
@@ -125,10 +169,15 @@ static int palmas_gpio_probe(struct platform_device *pdev)
palmas_gpio->palmas = palmas;
palmas_gpio->gpio_chip.owner = THIS_MODULE;
palmas_gpio->gpio_chip.label = dev_name(&pdev->dev);
- palmas_gpio->gpio_chip.ngpio = 8;
+ /* palmas charger has 16 gpios */
+ if (is_palmas_charger(palmas->product_id))
+ palmas_gpio->gpio_chip.ngpio = 16;
+ else
+ palmas_gpio->gpio_chip.ngpio = 8;
palmas_gpio->gpio_chip.can_sleep = 1;
palmas_gpio->gpio_chip.direction_input = palmas_gpio_input;
palmas_gpio->gpio_chip.direction_output = palmas_gpio_output;
+ palmas_gpio->gpio_chip.set_debounce = palmas_gpio_set_debounce,
palmas_gpio->gpio_chip.to_irq = palmas_gpio_to_irq;
palmas_gpio->gpio_chip.set = palmas_gpio_set;
palmas_gpio->gpio_chip.get = palmas_gpio_get;
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 98c0567..0b86845 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -243,7 +243,7 @@ struct palmas_platform_data {
* then the two value to load into the registers if true
*/
int mux_from_pdata;
- u8 pad1, pad2;
+ u8 pad1, pad2, pad3, pad4;
struct palmas_pmic_platform_data *pmic_pdata;
struct palmas_gpadc_platform_data *gpadc_pdata;
@@ -2512,6 +2512,16 @@ enum usb_irq_events {
#define PALMAS_PU_PD_GPIO_CTRL1 0x6
#define PALMAS_PU_PD_GPIO_CTRL2 0x7
#define PALMAS_OD_OUTPUT_GPIO_CTRL 0x8
+#define PALMAS_GPIO_DATA_IN2 0x9
+#define PALMAS_GPIO_DATA_DIR2 0xA
+#define PALMAS_GPIO_DATA_OUT2 0xB
+#define PALMAS_GPIO_DEBOUNCE_EN2 0xC
+#define PALMAS_GPIO_CLEAR_DATA_OUT2 0xD
+#define PALMAS_GPIO_SET_DATA_OUT2 0xE
+#define PALMAS_PU_PD_GPIO_CTRL3 0xF
+#define PALMAS_PU_PD_GPIO_CTRL4 0x10
+#define PALMAS_OD_OUTPUT_GPIO_CTRL2 0x11
+#define PALMAS_GPO_CTRL 0x12
/* Bit definitions for GPIO_DATA_IN */
#define PALMAS_GPIO_DATA_IN_GPIO_7_IN 0x80
--
1.7.0.4
On Friday 01 March 2013 10:36 PM, Ian Lartey wrote:
> Palmas charger has 16 GPIOs
> add palmas_gpio_[read|write|update] api to take account
> second bank of GPIOs
>
> Signed-off-by: Ian Lartey <[email protected]>
> Signed-off-by: Graeme Gregory <[email protected]>
> ---
Looks good.
Acked-by: Laxman Dewangan<[email protected]>
On Sat, 2 Mar 2013 13:09:47 +0530, Laxman Dewangan <[email protected]> wrote:
> On Friday 01 March 2013 10:36 PM, Ian Lartey wrote:
> > Palmas charger has 16 GPIOs
> > add palmas_gpio_[read|write|update] api to take account
> > second bank of GPIOs
> >
> > Signed-off-by: Ian Lartey <[email protected]>
> > Signed-off-by: Graeme Gregory <[email protected]>
> > ---
>
> Looks good.
> Acked-by: Laxman Dewangan<[email protected]>
>
Applied for v3.10, thanks.
g.
On 02/03/13 19:35, Grant Likely wrote:
> On Sat, 2 Mar 2013 13:09:47 +0530, Laxman Dewangan <[email protected]> wrote:
>> On Friday 01 March 2013 10:36 PM, Ian Lartey wrote:
>>> Palmas charger has 16 GPIOs
>>> add palmas_gpio_[read|write|update] api to take account
>>> second bank of GPIOs
>>>
>>> Signed-off-by: Ian Lartey <[email protected]>
>>> Signed-off-by: Graeme Gregory <[email protected]>
>>> ---
>>
>> Looks good.
>> Acked-by: Laxman Dewangan<[email protected]>
>>
>
> Applied for v3.10, thanks.
>
> g.
>
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>
Hello Grant,
For this [v2] patch I missed out that this patch depends on
"[PATCH v2] mfd: palmas: is_palmas_charger needed by multiple drivers."
I did have this noted in the first version of this patch - sorry.
kbuild rightly complained about the patch
Do you want to revert this patch until the
"mfd: palmas: is_palmas_charger needed by multiple drivers"
is also accepted ?
Ian
Hi Ian,
On Mon, Mar 04, 2013 at 10:20:58AM +0000, Ian Lartey wrote:
> On 02/03/13 19:35, Grant Likely wrote:
> >On Sat, 2 Mar 2013 13:09:47 +0530, Laxman Dewangan <[email protected]> wrote:
> >>On Friday 01 March 2013 10:36 PM, Ian Lartey wrote:
> >>>Palmas charger has 16 GPIOs
> >>>add palmas_gpio_[read|write|update] api to take account
> >>>second bank of GPIOs
> >>>
> >>>Signed-off-by: Ian Lartey <[email protected]>
> >>>Signed-off-by: Graeme Gregory <[email protected]>
> >>>---
> >>
> >>Looks good.
> >>Acked-by: Laxman Dewangan<[email protected]>
> >>
> >
> >Applied for v3.10, thanks.
> >
> >g.
> >
> >--
> >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> >the body of a message to [email protected]
> >More majordomo info at http://vger.kernel.org/majordomo-info.html
> >Please read the FAQ at http://www.tux.org/lkml/
> >
> Hello Grant,
>
> For this [v2] patch I missed out that this patch depends on
> "[PATCH v2] mfd: palmas: is_palmas_charger needed by multiple drivers."
> I did have this noted in the first version of this patch - sorry.
>
> kbuild rightly complained about the patch
>
> Do you want to revert this patch until the
> "mfd: palmas: is_palmas_charger needed by multiple drivers"
> is also accepted ?
You should send your patches as independent patchsets, to be applied in the
right order. I'll ack the MFD patches and Grant could take both.
Cheers,
Samuel.
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