* RE: [PATCH] spi:clk: preparation for switch to common clock framework
[not found] <1346351121-27710-1-git-send-email-m-karicheri2@ti.com>
@ 2012-09-07 18:37 ` Karicheri, Muralidharan
2012-09-07 21:28 ` Mike Turquette
1 sibling, 0 replies; 2+ messages in thread
From: Karicheri, Muralidharan @ 2012-09-07 18:37 UTC (permalink / raw)
To: Karicheri, Muralidharan, linux-kernel, mturquette,
spi-devel-general, grant.likely
>> -----Original Message-----
>> From: Karicheri, Muralidharan
>> Sent: Thursday, August 30, 2012 2:25 PM
>> To: linux-kernel@vger.kernel.org; mturquette@linaro.org; spi-devel-
>> general@lists.sourceforge.net; grant.likely@secretlab.ca
>> Cc: Karicheri, Muralidharan
>> Subject: [PATCH] spi:clk: preparation for switch to common clock framework
>>
>> As a first step towards migrating davinci platforms to use common clock
>> framework, replace all instances of clk_enable() with clk_prepare_enable()
>> and clk_disable() with clk_disable_unprepare(). Until the platform is
>> switched to use the CONFIG_HAVE_CLK_PREPARE Kconfig variable, this just
>> adds a might_sleep() call and would work without any issues.
>>
>> This will make it easy later to switch to common clk based implementation
>> of clk driver from DaVinci specific driver.
>>
>> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
>> ---
>> drivers/spi/spi-davinci.c | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
>> index 9b2901f..71a6423 100644
>> --- a/drivers/spi/spi-davinci.c
>> +++ b/drivers/spi/spi-davinci.c
>> @@ -873,7 +873,7 @@ static int __devinit davinci_spi_probe(struct platform_device
>> *pdev)
>> ret = -ENODEV;
>> goto put_master;
>> }
>> - clk_enable(dspi->clk);
>> + clk_prepare_enable(dspi->clk);
>>
>> master->bus_num = pdev->id;
>> master->num_chipselect = pdata->num_chipselect;
>> @@ -959,7 +959,7 @@ free_dma:
>> edma_free_channel(dspi->dma.rx_channel);
>> edma_free_slot(dspi->dma.dummy_param_slot);
>> free_clk:
>> - clk_disable(dspi->clk);
>> + clk_disable_unprepare(dspi->clk);
>> clk_put(dspi->clk);
>> put_master:
>> spi_master_put(master);
>> @@ -995,7 +995,7 @@ static int __devexit davinci_spi_remove(struct platform_device
>> *pdev)
>>
>> spi_bitbang_stop(&dspi->bitbang);
>>
>> - clk_disable(dspi->clk);
>> + clk_disable_unprepare(dspi->clk);
>> clk_put(dspi->clk);
>> spi_master_put(master);
>> free_irq(dspi->irq, dspi);
>> --
>> 1.7.9.5
subsystem owner,
Could you please review and apply this patch as needed? We need to get this upstream before submitting the patch for Common clock framework support for mach-davinci. If I need to follow a specific procedure to get this merged, please direct me to a process page.
Thanks.
Murali Karicheri
Software Design Engineer
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] spi:clk: preparation for switch to common clock framework
[not found] <1346351121-27710-1-git-send-email-m-karicheri2@ti.com>
2012-09-07 18:37 ` [PATCH] spi:clk: preparation for switch to common clock framework Karicheri, Muralidharan
@ 2012-09-07 21:28 ` Mike Turquette
1 sibling, 0 replies; 2+ messages in thread
From: Mike Turquette @ 2012-09-07 21:28 UTC (permalink / raw)
To: Murali Karicheri, linux-kernel, spi-devel-general, grant.likely
Cc: Murali Karicheri
Quoting Murali Karicheri (2012-08-30 11:25:21)
> As a first step towards migrating davinci platforms to use common clock
> framework, replace all instances of clk_enable() with clk_prepare_enable()
> and clk_disable() with clk_disable_unprepare(). Until the platform is
> switched to use the CONFIG_HAVE_CLK_PREPARE Kconfig variable, this just
> adds a might_sleep() call and would work without any issues.
>
> This will make it easy later to switch to common clk based implementation
> of clk driver from DaVinci specific driver.
>
> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
> ---
> drivers/spi/spi-davinci.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c
> index 9b2901f..71a6423 100644
> --- a/drivers/spi/spi-davinci.c
> +++ b/drivers/spi/spi-davinci.c
> @@ -873,7 +873,7 @@ static int __devinit davinci_spi_probe(struct platform_device *pdev)
> ret = -ENODEV;
> goto put_master;
> }
> - clk_enable(dspi->clk);
> + clk_prepare_enable(dspi->clk);
>
> master->bus_num = pdev->id;
> master->num_chipselect = pdata->num_chipselect;
> @@ -959,7 +959,7 @@ free_dma:
> edma_free_channel(dspi->dma.rx_channel);
> edma_free_slot(dspi->dma.dummy_param_slot);
> free_clk:
> - clk_disable(dspi->clk);
> + clk_disable_unprepare(dspi->clk);
> clk_put(dspi->clk);
> put_master:
> spi_master_put(master);
> @@ -995,7 +995,7 @@ static int __devexit davinci_spi_remove(struct platform_device *pdev)
>
> spi_bitbang_stop(&dspi->bitbang);
>
> - clk_disable(dspi->clk);
> + clk_disable_unprepare(dspi->clk);
> clk_put(dspi->clk);
> spi_master_put(master);
> free_irq(dspi->irq, dspi);
> --
> 1.7.9.5
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-09-07 18:37 ` [PATCH] spi:clk: preparation for switch to common clock framework Karicheri, Muralidharan
2012-09-07 21:28 ` Mike Turquette
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