mfd: Add support for Allwinner SoCs ADC
The Allwinner SoCs all have an ADC that can also act as a touchscreen
controller and a thermal sensor. For now, only the ADC and the thermal
sensor drivers are probed by the MFD, the touchscreen controller support
will be added later.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/include/linux/mfd/sun4i-gpadc.h b/include/linux/mfd/sun4i-gpadc.h
new file mode 100644
index 0000000..d7a29f2
--- /dev/null
+++ b/include/linux/mfd/sun4i-gpadc.h
@@ -0,0 +1,94 @@
+/* Header of ADC MFD core driver for sunxi platforms
+ *
+ * Copyright (c) 2016 Quentin Schulz <quentin.schulz@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation.
+ */
+
+#ifndef __SUN4I_GPADC__H__
+#define __SUN4I_GPADC__H__
+
+#define SUN4I_GPADC_CTRL0 0x00
+
+#define SUN4I_GPADC_CTRL0_ADC_FIRST_DLY(x) ((GENMASK(7, 0) & (x)) << 24)
+#define SUN4I_GPADC_CTRL0_ADC_FIRST_DLY_MODE BIT(23)
+#define SUN4I_GPADC_CTRL0_ADC_CLK_SELECT BIT(22)
+#define SUN4I_GPADC_CTRL0_ADC_CLK_DIVIDER(x) ((GENMASK(1, 0) & (x)) << 20)
+#define SUN4I_GPADC_CTRL0_FS_DIV(x) ((GENMASK(3, 0) & (x)) << 16)
+#define SUN4I_GPADC_CTRL0_T_ACQ(x) (GENMASK(15, 0) & (x))
+
+#define SUN4I_GPADC_CTRL1 0x04
+
+#define SUN4I_GPADC_CTRL1_STYLUS_UP_DEBOUNCE(x) ((GENMASK(7, 0) & (x)) << 12)
+#define SUN4I_GPADC_CTRL1_STYLUS_UP_DEBOUNCE_EN BIT(9)
+#define SUN4I_GPADC_CTRL1_TOUCH_PAN_CALI_EN BIT(6)
+#define SUN4I_GPADC_CTRL1_TP_DUAL_EN BIT(5)
+#define SUN4I_GPADC_CTRL1_TP_MODE_EN BIT(4)
+#define SUN4I_GPADC_CTRL1_TP_ADC_SELECT BIT(3)
+#define SUN4I_GPADC_CTRL1_ADC_CHAN_SELECT(x) (GENMASK(2, 0) & (x))
+
+/* TP_CTRL1 bits for sun6i SOCs */
+#define SUN6I_GPADC_CTRL1_TOUCH_PAN_CALI_EN BIT(7)
+#define SUN6I_GPADC_CTRL1_TP_DUAL_EN BIT(6)
+#define SUN6I_GPADC_CTRL1_TP_MODE_EN BIT(5)
+#define SUN6I_GPADC_CTRL1_TP_ADC_SELECT BIT(4)
+#define SUN6I_GPADC_CTRL1_ADC_CHAN_SELECT(x) (GENMASK(3, 0) & BIT(x))
+
+#define SUN4I_GPADC_CTRL2 0x08
+
+#define SUN4I_GPADC_CTRL2_TP_SENSITIVE_ADJUST(x) ((GENMASK(3, 0) & (x)) << 28)
+#define SUN4I_GPADC_CTRL2_TP_MODE_SELECT(x) ((GENMASK(1, 0) & (x)) << 26)
+#define SUN4I_GPADC_CTRL2_PRE_MEA_EN BIT(24)
+#define SUN4I_GPADC_CTRL2_PRE_MEA_THRE_CNT(x) (GENMASK(23, 0) & (x))
+
+#define SUN4I_GPADC_CTRL3 0x0c
+
+#define SUN4I_GPADC_CTRL3_FILTER_EN BIT(2)
+#define SUN4I_GPADC_CTRL3_FILTER_TYPE(x) (GENMASK(1, 0) & (x))
+
+#define SUN4I_GPADC_TPR 0x18
+
+#define SUN4I_GPADC_TPR_TEMP_ENABLE BIT(16)
+#define SUN4I_GPADC_TPR_TEMP_PERIOD(x) (GENMASK(15, 0) & (x))
+
+#define SUN4I_GPADC_INT_FIFOC 0x10
+
+#define SUN4I_GPADC_INT_FIFOC_TEMP_IRQ_EN BIT(18)
+#define SUN4I_GPADC_INT_FIFOC_TP_OVERRUN_IRQ_EN BIT(17)
+#define SUN4I_GPADC_INT_FIFOC_TP_DATA_IRQ_EN BIT(16)
+#define SUN4I_GPADC_INT_FIFOC_TP_DATA_XY_CHANGE BIT(13)
+#define SUN4I_GPADC_INT_FIFOC_TP_FIFO_TRIG_LEVEL(x) ((GENMASK(4, 0) & (x)) << 8)
+#define SUN4I_GPADC_INT_FIFOC_TP_DATA_DRQ_EN BIT(7)
+#define SUN4I_GPADC_INT_FIFOC_TP_FIFO_FLUSH BIT(4)
+#define SUN4I_GPADC_INT_FIFOC_TP_UP_IRQ_EN BIT(1)
+#define SUN4I_GPADC_INT_FIFOC_TP_DOWN_IRQ_EN BIT(0)
+
+#define SUN4I_GPADC_INT_FIFOS 0x14
+
+#define SUN4I_GPADC_INT_FIFOS_TEMP_DATA_PENDING BIT(18)
+#define SUN4I_GPADC_INT_FIFOS_FIFO_OVERRUN_PENDING BIT(17)
+#define SUN4I_GPADC_INT_FIFOS_FIFO_DATA_PENDING BIT(16)
+#define SUN4I_GPADC_INT_FIFOS_TP_IDLE_FLG BIT(2)
+#define SUN4I_GPADC_INT_FIFOS_TP_UP_PENDING BIT(1)
+#define SUN4I_GPADC_INT_FIFOS_TP_DOWN_PENDING BIT(0)
+
+#define SUN4I_GPADC_CDAT 0x1c
+#define SUN4I_GPADC_TEMP_DATA 0x20
+#define SUN4I_GPADC_DATA 0x24
+
+#define SUN4I_GPADC_IRQ_FIFO_DATA 0
+#define SUN4I_GPADC_IRQ_TEMP_DATA 1
+
+/* 10s delay before suspending the IP */
+#define SUN4I_GPADC_AUTOSUSPEND_DELAY 10000
+
+struct sun4i_gpadc_dev {
+ struct device *dev;
+ struct regmap *regmap;
+ struct regmap_irq_chip_data *regmap_irqc;
+ void __iomem *base;
+};
+
+#endif