From e1811f97ba985fef3f703f55aeb5d23660c919ef Mon Sep 17 00:00:00 2001 From: Josh Wu Date: Tue, 27 Aug 2013 12:28:00 +0100 Subject: iio: at91: introduce the multiple compatible string for different IPs. As use the multiple compatible string, we can remove hardware register in dt. CC: devicetree@vger.kernel.org Signed-off-by: Josh Wu Acked-by: Maxime Ripard Signed-off-by: Jonathan Cameron --- arch/arm/mach-at91/include/mach/at91_adc.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/mach-at91/include/mach/at91_adc.h b/arch/arm/mach-at91/include/mach/at91_adc.h index 8e7ed5c90817..bea1a2021d1e 100644 --- a/arch/arm/mach-at91/include/mach/at91_adc.h +++ b/arch/arm/mach-at91/include/mach/at91_adc.h @@ -48,6 +48,9 @@ #define AT91_ADC_ENDRX (1 << 18) /* End of RX Buffer */ #define AT91_ADC_RXFUFF (1 << 19) /* RX Buffer Full */ +#define AT91_ADC_SR_9X5 0x30 /* Status Register for 9x5 */ +#define AT91_ADC_SR_DRDY_9X5 (1 << 24) /* Data Ready */ + #define AT91_ADC_LCDR 0x20 /* Last Converted Data Register */ #define AT91_ADC_LDATA (0x3ff) @@ -58,4 +61,10 @@ #define AT91_ADC_CHR(n) (0x30 + ((n) * 4)) /* Channel Data Register N */ #define AT91_ADC_DATA (0x3ff) +#define AT91_ADC_CDR0_9X5 (0x50) /* Channel Data Register 0 for 9X5 */ + +#define AT91_ADC_TRGR_9260 AT91_ADC_MR +#define AT91_ADC_TRGR_9G45 0x08 +#define AT91_ADC_TRGR_9X5 0xC0 + #endif -- cgit v1.2.3-58-ga151 From 9120c0bea999cc26c3493486828d34138a7ac901 Mon Sep 17 00:00:00 2001 From: Josh Wu Date: Tue, 27 Aug 2013 12:28:00 +0100 Subject: iio: at91: Use different prescal, startup mask in MR for different IP For at91 boards, there are different IPs for adc. Different IPs has different STARTUP & PRESCAL mask in ADC_MR. Signed-off-by: Josh Wu Acked-by: Maxime Ripard Signed-off-by: Jonathan Cameron --- arch/arm/mach-at91/include/mach/at91_adc.h | 7 +++++-- drivers/iio/adc/at91_adc.c | 11 +++++++++-- include/linux/platform_data/at91_adc.h | 4 ++++ 3 files changed, 18 insertions(+), 4 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-at91/include/mach/at91_adc.h b/arch/arm/mach-at91/include/mach/at91_adc.h index bea1a2021d1e..048a57f76bd3 100644 --- a/arch/arm/mach-at91/include/mach/at91_adc.h +++ b/arch/arm/mach-at91/include/mach/at91_adc.h @@ -28,9 +28,12 @@ #define AT91_ADC_TRGSEL_EXTERNAL (6 << 1) #define AT91_ADC_LOWRES (1 << 4) /* Low Resolution */ #define AT91_ADC_SLEEP (1 << 5) /* Sleep Mode */ -#define AT91_ADC_PRESCAL (0x3f << 8) /* Prescalar Rate Selection */ +#define AT91_ADC_PRESCAL_9260 (0x3f << 8) /* Prescalar Rate Selection */ +#define AT91_ADC_PRESCAL_9G45 (0xff << 8) #define AT91_ADC_PRESCAL_(x) ((x) << 8) -#define AT91_ADC_STARTUP (0x1f << 16) /* Startup Up Time */ +#define AT91_ADC_STARTUP_9260 (0x1f << 16) /* Startup Up Time */ +#define AT91_ADC_STARTUP_9G45 (0x7f << 16) +#define AT91_ADC_STARTUP_9X5 (0xf << 16) #define AT91_ADC_STARTUP_(x) ((x) << 16) #define AT91_ADC_SHTIM (0xf << 24) /* Sample & Hold Time */ #define AT91_ADC_SHTIM_(x) ((x) << 24) diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index ed5eebc93bb7..84be63bdf038 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -672,8 +672,8 @@ static int at91_adc_probe(struct platform_device *pdev) shtim = round_up((st->sample_hold_time * adc_clk / 1000000) - 1, 1); - reg = AT91_ADC_PRESCAL_(prsc) & AT91_ADC_PRESCAL; - reg |= AT91_ADC_STARTUP_(ticks) & AT91_ADC_STARTUP; + reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask; + reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask; if (st->low_res) reg |= AT91_ADC_LOWRES; if (st->sleep_mode) @@ -746,6 +746,8 @@ static struct at91_adc_caps at91sam9260_caps = { .drdy_mask = AT91_ADC_DRDY, .status_register = AT91_ADC_SR, .trigger_register = AT91_ADC_TRGR_9260, + .mr_prescal_mask = AT91_ADC_PRESCAL_9260, + .mr_startup_mask = AT91_ADC_STARTUP_9260, }, }; @@ -755,6 +757,8 @@ static struct at91_adc_caps at91sam9g45_caps = { .drdy_mask = AT91_ADC_DRDY, .status_register = AT91_ADC_SR, .trigger_register = AT91_ADC_TRGR_9G45, + .mr_prescal_mask = AT91_ADC_PRESCAL_9G45, + .mr_startup_mask = AT91_ADC_STARTUP_9G45, }, }; @@ -764,6 +768,9 @@ static struct at91_adc_caps at91sam9x5_caps = { .drdy_mask = AT91_ADC_SR_DRDY_9X5, .status_register = AT91_ADC_SR_9X5, .trigger_register = AT91_ADC_TRGR_9X5, + /* prescal mask is same as 9G45 */ + .mr_prescal_mask = AT91_ADC_PRESCAL_9G45, + .mr_startup_mask = AT91_ADC_STARTUP_9X5, }, }; diff --git a/include/linux/platform_data/at91_adc.h b/include/linux/platform_data/at91_adc.h index e15745b4f3a5..b3ca1e94e0c8 100644 --- a/include/linux/platform_data/at91_adc.h +++ b/include/linux/platform_data/at91_adc.h @@ -14,12 +14,16 @@ (Interruptions registers mostly) * @status_register: Offset of the Interrupt Status Register * @trigger_register: Offset of the Trigger setup register + * @mr_prescal_mask: Mask of the PRESCAL field in the adc MR register + * @mr_startup_mask: Mask of the STARTUP field in the adc MR register */ struct at91_adc_reg_desc { u8 channel_base; u32 drdy_mask; u8 status_register; u8 trigger_register; + u32 mr_prescal_mask; + u32 mr_startup_mask; }; /** -- cgit v1.2.3-58-ga151