diff mbox

[v2,4/7] mfd: ssbi: Add regmap read/write helpers

Message ID 1387831563-13535-5-git-send-email-sboyd@codeaurora.org (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Stephen Boyd Dec. 23, 2013, 8:46 p.m. UTC
Add read and write helper functions that the pm8921-core driver
can use to read and write ssbi regsiters via a "no-bus" regmap.

Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
 drivers/mfd/ssbi.c   | 13 +++++++++++++
 include/linux/ssbi.h |  3 +++
 2 files changed, 16 insertions(+)

Comments

Mark Brown Dec. 24, 2013, 12:54 p.m. UTC | #1
On Mon, Dec 23, 2013 at 12:46:00PM -0800, Stephen Boyd wrote:

> +int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
> +{
> +	*val = 0;
> +	return ssbi_read(context, reg, (u8 *)val, 1);
> +}
> +EXPORT_SYMBOL_GPL(ssbi_reg_read);
> +
> +int ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
> +{
> +	return ssbi_write(context, reg, (u8 *)&val, 1);
> +}
> +EXPORT_SYMBOL_GPL(ssbi_reg_write);

Not a big deal but could these just be inlined in the headers?
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Stephen Boyd Dec. 26, 2013, 7:41 p.m. UTC | #2
On 12/24, Mark Brown wrote:
> On Mon, Dec 23, 2013 at 12:46:00PM -0800, Stephen Boyd wrote:
> 
> > +int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
> > +{
> > +	*val = 0;
> > +	return ssbi_read(context, reg, (u8 *)val, 1);
> > +}
> > +EXPORT_SYMBOL_GPL(ssbi_reg_read);
> > +
> > +int ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
> > +{
> > +	return ssbi_write(context, reg, (u8 *)&val, 1);
> > +}
> > +EXPORT_SYMBOL_GPL(ssbi_reg_write);
> 
> Not a big deal but could these just be inlined in the headers?

Sure, I can do that if I need to resend? The only benefit I see
is two less symbols exported.
Mark Brown Dec. 28, 2013, 2:52 p.m. UTC | #3
On Thu, Dec 26, 2013 at 11:41:33AM -0800, Stephen Boyd wrote:
> On 12/24, Mark Brown wrote:

> > Not a big deal but could these just be inlined in the headers?

> Sure, I can do that if I need to resend? The only benefit I see
> is two less symbols exported.

It also means that everything will be marginally faster since there
will be one less level of function call but yeah, there's little
practical benefit - it's a stylistic thing rather than a practical one.
Lee Jones Jan. 6, 2014, 11:50 a.m. UTC | #4
On Thu, 26 Dec 2013, Stephen Boyd wrote:

> On 12/24, Mark Brown wrote:
> > On Mon, Dec 23, 2013 at 12:46:00PM -0800, Stephen Boyd wrote:
> > 
> > > +int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
> > > +{
> > > +	*val = 0;
> > > +	return ssbi_read(context, reg, (u8 *)val, 1);
> > > +}
> > > +EXPORT_SYMBOL_GPL(ssbi_reg_read);
> > > +
> > > +int ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
> > > +{
> > > +	return ssbi_write(context, reg, (u8 *)&val, 1);
> > > +}
> > > +EXPORT_SYMBOL_GPL(ssbi_reg_write);
> > 
> > Not a big deal but could these just be inlined in the headers?
> 
> Sure, I can do that if I need to resend? The only benefit I see
> is two less symbols exported.

Yes please. After this review.
Stephen Boyd Jan. 6, 2014, 10:26 p.m. UTC | #5
On 01/06/14 03:50, Lee Jones wrote:
> On Thu, 26 Dec 2013, Stephen Boyd wrote:
>
>> On 12/24, Mark Brown wrote:
>>> On Mon, Dec 23, 2013 at 12:46:00PM -0800, Stephen Boyd wrote:
>>>
>>>> +int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
>>>> +{
>>>> +	*val = 0;
>>>> +	return ssbi_read(context, reg, (u8 *)val, 1);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(ssbi_reg_read);
>>>> +
>>>> +int ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
>>>> +{
>>>> +	return ssbi_write(context, reg, (u8 *)&val, 1);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(ssbi_reg_write);
>>> Not a big deal but could these just be inlined in the headers?
>> Sure, I can do that if I need to resend? The only benefit I see
>> is two less symbols exported.
> Yes please. After this review.
>

Ok done. Just waiting for you to reply on patch 3 until I resend.
diff mbox

Patch

diff --git a/drivers/mfd/ssbi.c b/drivers/mfd/ssbi.c
index b78942e..c5d270f 100644
--- a/drivers/mfd/ssbi.c
+++ b/drivers/mfd/ssbi.c
@@ -269,6 +269,19 @@  int ssbi_write(struct device *dev, u16 addr, const u8 *buf, int len)
 }
 EXPORT_SYMBOL_GPL(ssbi_write);
 
+int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+	*val = 0;
+	return ssbi_read(context, reg, (u8 *)val, 1);
+}
+EXPORT_SYMBOL_GPL(ssbi_reg_read);
+
+int ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+	return ssbi_write(context, reg, (u8 *)&val, 1);
+}
+EXPORT_SYMBOL_GPL(ssbi_reg_write);
+
 static int ssbi_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
diff --git a/include/linux/ssbi.h b/include/linux/ssbi.h
index bcbb642..b862f3d 100644
--- a/include/linux/ssbi.h
+++ b/include/linux/ssbi.h
@@ -20,4 +20,7 @@ 
 int ssbi_write(struct device *dev, u16 addr, const u8 *buf, int len);
 int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len);
 
+int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val);
+int ssbi_reg_write(void *context, unsigned int reg, unsigned int val);
+
 #endif