iio: adc: at91: cleanup platform_data

num_channels and registers are not used anymore since they are defined inside
the driver and assigned by matching the id_table.

Also, struct at91_adc_reg_desc is now only used inside the driver.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index 89777ed9abd8..1beae65aef2c 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -46,6 +46,25 @@
 #define TOUCH_SAMPLE_PERIOD_US          2000    /* 2ms */
 #define TOUCH_PEN_DETECT_DEBOUNCE_US    200
 
+/**
+ * struct at91_adc_reg_desc - Various informations relative to registers
+ * @channel_base:       Base offset for the channel data registers
+ * @drdy_mask:          Mask of the DRDY field in the relevant registers
+                        (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;
+};
+
 struct at91_adc_caps {
         bool    has_ts;         /* Support touch screen */
         bool    has_tsmr;       /* only at91sam9x5, sama5d3 have TSMR reg */