S5M8767 chip has 3 crystal oscillators which are operated in the same
as the crystal oscillators in S2MPS11. Extend s2mps11-clk driver to
support clocks in S5M8767.
The patches are rebased on top of next-20130218.
Tushar Behera (2):
clk: clk-s2mps11: Refactor for including support for other MFD clocks
clk: clk-s2mps11: Add support for clocks in S5M8767 MFD
drivers/clk/Kconfig | 6 ++++--
drivers/clk/clk-s2mps11.c | 25 +++++++++++++++++++++----
2 files changed, 25 insertions(+), 6 deletions(-)
--
1.7.9.5
The clocks in S2MPS11 and S5M8767 are managed in the same way, baring
a difference in the register offset. It would be better to update
existing S2MPS11 driver to support the clocks in S5M8767, rather than
to create an almost duplicate driver altogether.
Signed-off-by: Tushar Behera <[email protected]>
Reviewed-by: Tomasz Figa <[email protected]>
Reviewed-by: Yadwinder Singh Brar <[email protected]>
---
Changes since V1:
* Fixed a check patch warning
drivers/clk/clk-s2mps11.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c
index 00a3abe..6f587bc 100644
--- a/drivers/clk/clk-s2mps11.c
+++ b/drivers/clk/clk-s2mps11.c
@@ -48,6 +48,7 @@ struct s2mps11_clk {
struct clk_lookup *lookup;
u32 mask;
bool enabled;
+ unsigned int reg;
};
static struct s2mps11_clk *to_s2mps11_clk(struct clk_hw *hw)
@@ -61,7 +62,7 @@ static int s2mps11_clk_prepare(struct clk_hw *hw)
int ret;
ret = regmap_update_bits(s2mps11->iodev->regmap_pmic,
- S2MPS11_REG_RTC_CTRL,
+ s2mps11->reg,
s2mps11->mask, s2mps11->mask);
if (!ret)
s2mps11->enabled = true;
@@ -74,7 +75,7 @@ static void s2mps11_clk_unprepare(struct clk_hw *hw)
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
int ret;
- ret = regmap_update_bits(s2mps11->iodev->regmap_pmic, S2MPS11_REG_RTC_CTRL,
+ ret = regmap_update_bits(s2mps11->iodev->regmap_pmic, s2mps11->reg,
s2mps11->mask, ~s2mps11->mask);
if (!ret)
@@ -155,6 +156,7 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s2mps11_clk *s2mps11_clks, *s2mps11_clk;
struct device_node *clk_np = NULL;
+ unsigned int s2mps11_reg;
int i, ret = 0;
u32 val;
@@ -169,13 +171,23 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
if (IS_ERR(clk_np))
return PTR_ERR(clk_np);
+ switch (platform_get_device_id(pdev)->driver_data) {
+ case S2MPS11X:
+ s2mps11_reg = S2MPS11_REG_RTC_CTRL;
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid device type\n");
+ return -EINVAL;
+ };
+
for (i = 0; i < S2MPS11_CLKS_NUM; i++, s2mps11_clk++) {
s2mps11_clk->iodev = iodev;
s2mps11_clk->hw.init = &s2mps11_clks_init[i];
s2mps11_clk->mask = 1 << i;
+ s2mps11_clk->reg = s2mps11_reg;
ret = regmap_read(s2mps11_clk->iodev->regmap_pmic,
- S2MPS11_REG_RTC_CTRL, &val);
+ s2mps11_clk->reg, &val);
if (ret < 0)
goto err_reg;
@@ -241,7 +253,7 @@ static int s2mps11_clk_remove(struct platform_device *pdev)
}
static const struct platform_device_id s2mps11_clk_id[] = {
- { "s2mps11-clk", 0},
+ { "s2mps11-clk", S2MPS11X},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_clk_id);
--
1.7.9.5
Since clock operation within S2MPS11 and S5M8767 are similar, we can
support both the devices within a single driver.
Signed-off-by: Tushar Behera <[email protected]>
Reviewed-by: Tomasz Figa <[email protected]>
Reviewed-by: Yadwinder Singh Brar <[email protected]>
---
drivers/clk/Kconfig | 6 ++++--
drivers/clk/clk-s2mps11.c | 5 +++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 7641965..da1b416 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -65,10 +65,12 @@ config COMMON_CLK_SI570
clock generators.
config COMMON_CLK_S2MPS11
- tristate "Clock driver for S2MPS11 MFD"
+ tristate "Clock driver for S2MPS11/S5M8767 MFD"
depends on MFD_SEC_CORE
---help---
- This driver supports S2MPS11 crystal oscillator clock.
+ This driver supports S2MPS11/S5M8767 crystal oscillator clock. These
+ multi-function devices have 3 fixed-rate oscillators, clocked at
+ 32KHz each.
config CLK_TWL6040
tristate "External McPDM functional clock from twl6040"
diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c
index 6f587bc..5088755 100644
--- a/drivers/clk/clk-s2mps11.c
+++ b/drivers/clk/clk-s2mps11.c
@@ -27,6 +27,7 @@
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/mfd/samsung/s2mps11.h>
+#include <linux/mfd/samsung/s5m8767.h>
#include <linux/mfd/samsung/core.h>
#define s2mps11_name(a) (a->hw.init->name)
@@ -175,6 +176,9 @@ static int s2mps11_clk_probe(struct platform_device *pdev)
case S2MPS11X:
s2mps11_reg = S2MPS11_REG_RTC_CTRL;
break;
+ case S5M8767X:
+ s2mps11_reg = S5M8767_REG_CTRL1;
+ break;
default:
dev_err(&pdev->dev, "Invalid device type\n");
return -EINVAL;
@@ -254,6 +258,7 @@ static int s2mps11_clk_remove(struct platform_device *pdev)
static const struct platform_device_id s2mps11_clk_id[] = {
{ "s2mps11-clk", S2MPS11X},
+ { "s5m8767-clk", S5M8767X},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_clk_id);
--
1.7.9.5
Quoting Tushar Behera (2014-02-18 22:24:34)
> S5M8767 chip has 3 crystal oscillators which are operated in the same
> as the crystal oscillators in S2MPS11. Extend s2mps11-clk driver to
> support clocks in S5M8767.
>
> The patches are rebased on top of next-20130218.
These changes look good to me. Will these get picked up as part of a
Samsung clk pull request or would you prefer that I pick them
individually?
Regards,
Mike
>
> Tushar Behera (2):
> clk: clk-s2mps11: Refactor for including support for other MFD clocks
> clk: clk-s2mps11: Add support for clocks in S5M8767 MFD
>
> drivers/clk/Kconfig | 6 ++++--
> drivers/clk/clk-s2mps11.c | 25 +++++++++++++++++++++----
> 2 files changed, 25 insertions(+), 6 deletions(-)
>
> --
> 1.7.9.5
>
On 27 February 2014 02:41, Mike Turquette <[email protected]> wrote:
> Quoting Tushar Behera (2014-02-18 22:24:34)
>> S5M8767 chip has 3 crystal oscillators which are operated in the same
>> as the crystal oscillators in S2MPS11. Extend s2mps11-clk driver to
>> support clocks in S5M8767.
>>
>> The patches are rebased on top of next-20130218.
>
> These changes look good to me. Will these get picked up as part of a
> Samsung clk pull request or would you prefer that I pick them
> individually?
>
Mike,
Please pick these patches. They won't be part of Samsung clk pull request.
> Regards,
> Mike
>
>>
>> Tushar Behera (2):
>> clk: clk-s2mps11: Refactor for including support for other MFD clocks
>> clk: clk-s2mps11: Add support for clocks in S5M8767 MFD
>>
>> drivers/clk/Kconfig | 6 ++++--
>> drivers/clk/clk-s2mps11.c | 25 +++++++++++++++++++++----
>> 2 files changed, 25 insertions(+), 6 deletions(-)
>>
>> --
>> 1.7.9.5
>>
--
Tushar Behera