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Message-ID: <75853d42-faf4-b406-f54e-71871143d61a@sifive.com>
Date: Thu, 10 Nov 2022 16:35:56 +0000
From: Ben Dooks <ben.dooks@...ive.com>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
Thierry Reding <thierry.reding@...il.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Greentime Hu <greentime.hu@...ive.com>,
jarkko.nikula@...ux.intel.com,
William Salmon <william.salmon@...ive.com>,
Jude Onyenegecha <jude.onyenegecha@...ive.com>
Subject: Re: [PATCH v6 06/10] pwm: dwc: split pci out of core driver
On 10/11/2022 15:29, Uwe Kleine-König wrote:
> On Thu, Oct 20, 2022 at 04:16:06PM +0100, Ben Dooks wrote:
>> Moving towards adding non-pci support for the driver, move the pci
>> parts out of the core into their own module. This is partly due to
>> the module_driver() code only being allowed once in a module and also
>> to avoid a number of #ifdef if we build a single file in a system
>> without pci support.
>>
>> Signed-off-by: Ben Dooks <ben.dooks@...ive.com>
>> ---
>> v6:
>> - put DWC_PERIOD_NS back to avoid bisect issues
>> v4:
>> - removed DWC_PERIOD_NS as not needed
>> ---
>> drivers/pwm/Kconfig | 14 +++-
>> drivers/pwm/Makefile | 1 +
>> drivers/pwm/pwm-dwc-pci.c | 133 ++++++++++++++++++++++++++++++++
>> drivers/pwm/pwm-dwc.c | 158 +-------------------------------------
>> drivers/pwm/pwm-dwc.h | 58 ++++++++++++++
>> 5 files changed, 207 insertions(+), 157 deletions(-)
>> create mode 100644 drivers/pwm/pwm-dwc-pci.c
>> create mode 100644 drivers/pwm/pwm-dwc.h
>>
>> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
>> index 3f3c53af4a56..a9f1c554db2b 100644
>> --- a/drivers/pwm/Kconfig
>> +++ b/drivers/pwm/Kconfig
>> @@ -175,15 +175,23 @@ config PWM_CROS_EC
>> Controller.
>>
>> config PWM_DWC
>> - tristate "DesignWare PWM Controller"
>> - depends on PCI || COMPILE_TEST
>> + tristate "DesignWare PWM Controller core"
>> depends on HAS_IOMEM
>> help
>> - PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
>> + PWM driver for Synopsys DWC PWM Controller.
>
> Currently pwm-dwc doesn't contain a driver but is only a library used by
> pwm-dwc-pci (and later the of driver). As such it doesn't make sense to
> be user-selectible, does it?
I suppose the PWM_DWC should select the original driver an a new
PWM_DW_CORE should build the actual core driver.
--
Ben
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