From: Jonathan Cameron <jic23@kernel.org> To: "m.shams" <m.shams@samsung.com> Cc: <lars@metafoo.de>, <robh+dt@kernel.org>, <krzk+dt@kernel.org>, <geert@linux-m68k.org>, <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-samsung-soc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-iio@vger.kernel.org>, <alim.akhtar@samsung.com>, <paul@crapouillou.net>, <linux-fsd@tesla.com> Subject: Re: [PATCH v2 2/3] iio: adc: exynos-adc: Add support for ADC FSD-HW controller Date: Fri, 3 Jun 2022 16:10:35 +0100 [thread overview] Message-ID: <20220603161035.0f22420b@jic23-huawei> (raw) In-Reply-To: <015b01d874ca$69aa8bb0$3cffa310$@samsung.com> On Tue, 31 May 2022 14:12:46 +0530 "m.shams" <m.shams@samsung.com> wrote: > Hi Jonathan, > > On Fri, 20 May 2022 20:28:19 +0530 > Tamseel Shams <m.shams@samsung.com> wrote: > > >> From: Alim Akhtar <alim.akhtar@samsung.com> > >> > >> Exynos's ADC-FSD-HW has some difference in registers set, number of > >> programmable channels (16 channel) etc. This patch adds support for > >> ADC-FSD-HW controller version. > >> > >> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> > >> Signed-off-by: Tamseel Shams <m.shams@samsung.com> > > > > Hi, > > > > One suggestion inline, otherwise LGTM. Plenty of time to tidy this up as > this won't make the upcoming merge window - I'll be queuing it up for 5.20 > > > > Thanks, > > > > Jonathan > > > > Okay, Thanks for reviewing. > > >> --- > >> - Changes since v1 > >> * Addressed Jonathan's comment by using already provided isr handle > >> > >> drivers/iio/adc/exynos_adc.c | 55 > >> ++++++++++++++++++++++++++++++++++++ > >> 1 file changed, 55 insertions(+) > >> > >> diff --git a/drivers/iio/adc/exynos_adc.c > >> b/drivers/iio/adc/exynos_adc.c index cff1ba57fb16..183ae591327a 100644 > >> --- a/drivers/iio/adc/exynos_adc.c > >> +++ b/drivers/iio/adc/exynos_adc.c > >> @@ -55,6 +55,11 @@ > >> #define ADC_V2_INT_ST(x) ((x) + 0x14) > >> #define ADC_V2_VER(x) ((x) + 0x20) > >> > >> +/* ADC_FSD_HW register definitions */ > >> +#define ADC_FSD_DAT(x) ((x) + 0x08) > > > > I mention this below, but these different register sets should be in the > struct exynos_adc_data to avoid the need for an if "compatible" == check on > each use of > them. > > > > Can you clarify on how exactly you want me to add these register sets to > struct exynos_adc_data? > Do you mean just for these registers or other registers too which are > defined in this way only? Any registers addresses that are different for the different chip variants supported by the driver. In cases where the only difference between versions is a register address then define something like #define ADC_FSD_DAT_BASE 0x08 In the structure have a dat_addr = ADC_FSD_DAT_BASE and use dat_addr + x to access. If things are more complex (and I haven't looked closely so that may apply to the example give above, the wrap the different access sequence and register addresses in a callback similar to already done for clear_irq. Jonathan > > > Thanks & Regards, > Tamseel Shams >
WARNING: multiple messages have this Message-ID (diff)
From: Jonathan Cameron <jic23@kernel.org> To: "m.shams" <m.shams@samsung.com> Cc: <lars@metafoo.de>, <robh+dt@kernel.org>, <krzk+dt@kernel.org>, <geert@linux-m68k.org>, <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-samsung-soc@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-iio@vger.kernel.org>, <alim.akhtar@samsung.com>, <paul@crapouillou.net>, <linux-fsd@tesla.com> Subject: Re: [PATCH v2 2/3] iio: adc: exynos-adc: Add support for ADC FSD-HW controller Date: Fri, 3 Jun 2022 16:10:35 +0100 [thread overview] Message-ID: <20220603161035.0f22420b@jic23-huawei> (raw) In-Reply-To: <015b01d874ca$69aa8bb0$3cffa310$@samsung.com> On Tue, 31 May 2022 14:12:46 +0530 "m.shams" <m.shams@samsung.com> wrote: > Hi Jonathan, > > On Fri, 20 May 2022 20:28:19 +0530 > Tamseel Shams <m.shams@samsung.com> wrote: > > >> From: Alim Akhtar <alim.akhtar@samsung.com> > >> > >> Exynos's ADC-FSD-HW has some difference in registers set, number of > >> programmable channels (16 channel) etc. This patch adds support for > >> ADC-FSD-HW controller version. > >> > >> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> > >> Signed-off-by: Tamseel Shams <m.shams@samsung.com> > > > > Hi, > > > > One suggestion inline, otherwise LGTM. Plenty of time to tidy this up as > this won't make the upcoming merge window - I'll be queuing it up for 5.20 > > > > Thanks, > > > > Jonathan > > > > Okay, Thanks for reviewing. > > >> --- > >> - Changes since v1 > >> * Addressed Jonathan's comment by using already provided isr handle > >> > >> drivers/iio/adc/exynos_adc.c | 55 > >> ++++++++++++++++++++++++++++++++++++ > >> 1 file changed, 55 insertions(+) > >> > >> diff --git a/drivers/iio/adc/exynos_adc.c > >> b/drivers/iio/adc/exynos_adc.c index cff1ba57fb16..183ae591327a 100644 > >> --- a/drivers/iio/adc/exynos_adc.c > >> +++ b/drivers/iio/adc/exynos_adc.c > >> @@ -55,6 +55,11 @@ > >> #define ADC_V2_INT_ST(x) ((x) + 0x14) > >> #define ADC_V2_VER(x) ((x) + 0x20) > >> > >> +/* ADC_FSD_HW register definitions */ > >> +#define ADC_FSD_DAT(x) ((x) + 0x08) > > > > I mention this below, but these different register sets should be in the > struct exynos_adc_data to avoid the need for an if "compatible" == check on > each use of > them. > > > > Can you clarify on how exactly you want me to add these register sets to > struct exynos_adc_data? > Do you mean just for these registers or other registers too which are > defined in this way only? Any registers addresses that are different for the different chip variants supported by the driver. In cases where the only difference between versions is a register address then define something like #define ADC_FSD_DAT_BASE 0x08 In the structure have a dat_addr = ADC_FSD_DAT_BASE and use dat_addr + x to access. If things are more complex (and I haven't looked closely so that may apply to the example give above, the wrap the different access sequence and register addresses in a callback similar to already done for clear_irq. Jonathan > > > Thanks & Regards, > Tamseel Shams > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-06-03 15:01 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20220520145757epcas5p145e5546f71fe836ad6d6a5f1b40459ec@epcas5p1.samsung.com> 2022-05-20 14:58 ` [PATCH v2 0/3] Adds support of ADC for FSD SoC Tamseel Shams 2022-05-20 14:58 ` Tamseel Shams [not found] ` <CGME20220520145759epcas5p240de0ce6d1a1bfea6c8a6bfb61c5d27d@epcas5p2.samsung.com> 2022-05-20 14:58 ` [PATCH v2 1/3] dt-bindings: iio: adc: Add FSD-HW variant Tamseel Shams 2022-05-20 14:58 ` Tamseel Shams 2022-05-23 10:16 ` Krzysztof Kozlowski 2022-05-23 10:16 ` Krzysztof Kozlowski 2022-05-31 8:27 ` m.shams 2022-05-31 8:27 ` m.shams [not found] ` <CGME20220520145802epcas5p2153cb572493e3bccd702e0ecce1171fb@epcas5p2.samsung.com> 2022-05-20 14:58 ` [PATCH v2 2/3] iio: adc: exynos-adc: Add support for ADC FSD-HW controller Tamseel Shams 2022-05-20 14:58 ` Tamseel Shams 2022-05-22 11:25 ` Jonathan Cameron 2022-05-22 11:25 ` Jonathan Cameron 2022-05-31 8:42 ` m.shams 2022-05-31 8:42 ` m.shams 2022-06-03 15:10 ` Jonathan Cameron [this message] 2022-06-03 15:10 ` Jonathan Cameron 2022-05-23 10:20 ` Krzysztof Kozlowski 2022-05-23 10:20 ` Krzysztof Kozlowski 2022-05-31 8:29 ` m.shams 2022-05-31 8:29 ` m.shams [not found] ` <CGME20220520145804epcas5p2925e66d30b18378fc62c92999ec269f7@epcas5p2.samsung.com> 2022-05-20 14:58 ` [PATCH v2 3/3] arm64: dts: fsd: Add ADC device tree node Tamseel Shams 2022-05-20 14:58 ` Tamseel Shams 2022-05-23 10:22 ` Krzysztof Kozlowski 2022-05-23 10:22 ` Krzysztof Kozlowski 2022-05-31 8:32 ` m.shams 2022-05-31 8:32 ` m.shams
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