From 72412963e66f4a2448fd87f455b33f3a5115f4bd Mon Sep 17 00:00:00 2001 From: Mike Fiore Date: Wed, 8 Oct 2014 10:38:26 -0500 Subject: mts-io: remove all unused spi and adc code from mtcdp remote board-temperature attribute --- io-module/adc.c | 87 --------------------------------------------------------- 1 file changed, 87 deletions(-) delete mode 100644 io-module/adc.c (limited to 'io-module/adc.c') diff --git a/io-module/adc.c b/io-module/adc.c deleted file mode 100644 index bcb3598..0000000 --- a/io-module/adc.c +++ /dev/null @@ -1,87 +0,0 @@ - -#define ADC_SHTIME_DEFAULT 0x05 -#define ADC_STARTUP_DEFAULT 0x04 -#define ADC_PRESCALE_DEFAULT 0x3F -#define ADC_MODE_DEFAULT \ - ((ADC_SHTIME_DEFAULT & 0x0F) << 24) | \ - ((ADC_STARTUP_DEFAULT & 0x1F) << 16) | \ - ((ADC_PRESCALE_DEFAULT & 0x3F) << 8) - -#define ADC_CR_OFFSET 0x00 -#define ADC_MR_OFFSET 0x04 -#define ADC_CHER_OFFSET 0x10 -#define ADC_CHDR_OFFSET 0x14 -#define ADC_CHSR_OFFSET 0x18 -#define ADC_SR_OFFSET 0x1C -#define ADC_LDCR_OFFSET 0x20 -#define ADC_IER_OFFSET 0x14 -#define ADC_IDR_OFFSET 0x28 -#define ADC_IMR_OFFSET 0x2C -#define ADC_CDR0_OFFSET 0x30 -#define ADC_CDR1_OFFSET 0x34 -#define ADC_CDR2_OFFSET 0x38 -#define ADC_CDR3_OFFSET 0x3C - -void __iomem *adc_base; -struct clk *adc_clk; - -#define ADC_CONVERT_RESET(base) writel(0x01, (base) + ADC_CR_OFFSET) -#define ADC_CONVERT_START(base) writel(0x02, (base) + ADC_CR_OFFSET) - -static ssize_t mts_attr_show_adc(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - int offset; - u32 value; - u32 chan_mask; - - if (!DEVICE_CAPA(id_eeprom.capa, CAPA_ADC)) { - log_debug("ADC not available"); - return -ENODEV; - } - - if (!strcmp(attr->attr.name, "adc0")) { - offset = ADC_CDR0_OFFSET; - chan_mask = 0x01; - } else if (!strcmp(attr->attr.name, "adc1")) { - offset = ADC_CDR1_OFFSET; - chan_mask = 0x02; - } else if (!strcmp(attr->attr.name, "adc2")) { - offset = ADC_CDR2_OFFSET; - chan_mask = 0x04; - } else if (!strcmp(attr->attr.name, "adc3")) { - offset = ADC_CDR3_OFFSET; - chan_mask = 0x08; - } else { - log_notice("adc attr does not exist"); - return -ENOENT; - } - - mutex_lock(&mts_io_mutex); - - // disable all channels and enable the one we want - writel(0x0F, adc_base + ADC_CHDR_OFFSET); - writel(chan_mask, adc_base + ADC_CHER_OFFSET); - - ADC_CONVERT_START(adc_base); - - // wait for conversion to complete (EOC bit set) - value = 0; - while (value != chan_mask) { - value = readl(adc_base + ADC_SR_OFFSET) & chan_mask; - log_debug("ADC_SR EOC [%X]", value); - } - - // read result - value = readl(adc_base + offset); - - mutex_unlock(&mts_io_mutex); - - return sprintf(buf, "%lu\n", (unsigned long) value); -} - -static DEVICE_ATTR_RO_MTS(dev_attr_adc0, "adc0", mts_attr_show_adc); -static DEVICE_ATTR_RO_MTS(dev_attr_adc1, "adc1", mts_attr_show_adc); -static DEVICE_ATTR_RO_MTS(dev_attr_adc2, "adc2", mts_attr_show_adc); -static DEVICE_ATTR_RO_MTS(dev_attr_adc3, "adc3", mts_attr_show_adc); -- cgit v1.2.3