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Sat, 30 Aug 2025 09:48:42 -0700 (PDT) From: Krzysztof Kozlowski Date: Sat, 30 Aug 2025 18:48:30 +0200 Subject: [PATCH v2 1/5] iio: adc: exynos_adc: Drop S3C2410 support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250830-s3c-cleanup-adc-v2-1-4f8299343d32@linaro.org> References: <20250830-s3c-cleanup-adc-v2-0-4f8299343d32@linaro.org> In-Reply-To: <20250830-s3c-cleanup-adc-v2-0-4f8299343d32@linaro.org> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Krzysztof Kozlowski , Alim Akhtar , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Samsung S3C24xx family of SoCs was removed from the Linux kernel in the commit 61b7f8920b17 ("ARM: s3c: remove all s3c24xx support"), in January 2023. There are no in-kernel users of its compatibles. Reviewed-by: Andy Shevchenko Signed-off-by: Krzysztof Kozlowski --- drivers/iio/adc/exynos_adc.c | 75 +---------------------------------------= ---- 1 file changed, 1 insertion(+), 74 deletions(-) diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c index 4614cf848535944a41e0ab19f35c5ca0546000c0..17fd33c6bd6d0dcf41771331ecb= 328e58d820ed0 100644 --- a/drivers/iio/adc/exynos_adc.c +++ b/drivers/iio/adc/exynos_adc.c @@ -44,9 +44,6 @@ #define ADC_V1_MUX(x) ((x) + 0x1c) #define ADC_V1_CLRINTPNDNUP(x) ((x) + 0x20) =20 -/* S3C2410 ADC registers definitions */ -#define ADC_S3C2410_MUX(x) ((x) + 0x18) - /* Future ADC_V2 registers definitions */ #define ADC_V2_CON1(x) ((x) + 0x00) #define ADC_V2_CON2(x) ((x) + 0x04) @@ -61,10 +58,8 @@ #define ADC_V1_CON_PRSCLV(x) (((x) & 0xFF) << 6) #define ADC_V1_CON_STANDBY (1u << 2) =20 -/* Bit definitions for S3C2410 ADC */ +/* Bit definitions for S3C2410 / S3C6410 ADC */ #define ADC_S3C2410_CON_SELMUX(x) (((x) & 7) << 3) -#define ADC_S3C2410_DATX_MASK 0x3FF -#define ADC_S3C2416_CON_RES_SEL (1u << 3) =20 /* touch screen always uses channel 0 */ #define ADC_S3C2410_MUX_TS 0 @@ -307,53 +302,6 @@ static const struct exynos_adc_data exynos_adc_s5pv210= _data =3D { .start_conv =3D exynos_adc_v1_start_conv, }; =20 -static void exynos_adc_s3c2416_start_conv(struct exynos_adc *info, - unsigned long addr) -{ - u32 con1; - - /* Enable 12 bit ADC resolution */ - con1 =3D readl(ADC_V1_CON(info->regs)); - con1 |=3D ADC_S3C2416_CON_RES_SEL; - writel(con1, ADC_V1_CON(info->regs)); - - /* Select channel for S3C2416 */ - writel(addr, ADC_S3C2410_MUX(info->regs)); - - con1 =3D readl(ADC_V1_CON(info->regs)); - writel(con1 | ADC_CON_EN_START, ADC_V1_CON(info->regs)); -} - -static struct exynos_adc_data const exynos_adc_s3c2416_data =3D { - .num_channels =3D MAX_ADC_V1_CHANNELS, - .mask =3D ADC_DATX_MASK, /* 12 bit ADC resolution */ - - .init_hw =3D exynos_adc_v1_init_hw, - .exit_hw =3D exynos_adc_v1_exit_hw, - .start_conv =3D exynos_adc_s3c2416_start_conv, -}; - -static void exynos_adc_s3c2443_start_conv(struct exynos_adc *info, - unsigned long addr) -{ - u32 con1; - - /* Select channel for S3C2433 */ - writel(addr, ADC_S3C2410_MUX(info->regs)); - - con1 =3D readl(ADC_V1_CON(info->regs)); - writel(con1 | ADC_CON_EN_START, ADC_V1_CON(info->regs)); -} - -static struct exynos_adc_data const exynos_adc_s3c2443_data =3D { - .num_channels =3D MAX_ADC_V1_CHANNELS, - .mask =3D ADC_S3C2410_DATX_MASK, /* 10 bit ADC resolution */ - - .init_hw =3D exynos_adc_v1_init_hw, - .exit_hw =3D exynos_adc_v1_exit_hw, - .start_conv =3D exynos_adc_s3c2443_start_conv, -}; - static void exynos_adc_s3c64xx_start_conv(struct exynos_adc *info, unsigned long addr) { @@ -365,15 +313,6 @@ static void exynos_adc_s3c64xx_start_conv(struct exyno= s_adc *info, writel(con1 | ADC_CON_EN_START, ADC_V1_CON(info->regs)); } =20 -static struct exynos_adc_data const exynos_adc_s3c24xx_data =3D { - .num_channels =3D MAX_ADC_V1_CHANNELS, - .mask =3D ADC_S3C2410_DATX_MASK, /* 10 bit ADC resolution */ - - .init_hw =3D exynos_adc_v1_init_hw, - .exit_hw =3D exynos_adc_v1_exit_hw, - .start_conv =3D exynos_adc_s3c64xx_start_conv, -}; - static struct exynos_adc_data const exynos_adc_s3c64xx_data =3D { .num_channels =3D MAX_ADC_V1_CHANNELS, .mask =3D ADC_DATX_MASK, /* 12 bit ADC resolution */ @@ -486,18 +425,6 @@ static const struct exynos_adc_data exynos7_adc_data = =3D { =20 static const struct of_device_id exynos_adc_match[] =3D { { - .compatible =3D "samsung,s3c2410-adc", - .data =3D &exynos_adc_s3c24xx_data, - }, { - .compatible =3D "samsung,s3c2416-adc", - .data =3D &exynos_adc_s3c2416_data, - }, { - .compatible =3D "samsung,s3c2440-adc", - .data =3D &exynos_adc_s3c24xx_data, - }, { - .compatible =3D "samsung,s3c2443-adc", - .data =3D &exynos_adc_s3c2443_data, - }, { .compatible =3D "samsung,s3c6410-adc", .data =3D &exynos_adc_s3c64xx_data, }, { --=20 2.48.1