From: Jonathan Cameron <jic23@xxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/staging/iio/adc/Kconfig | 1 +
drivers/staging/iio/adc/Makefile | 2 +-
drivers/staging/iio/adc/max1363.h | 122 +++---
drivers/staging/iio/adc/max1363_core.c | 762 +++++++++++++++++++-------------
drivers/staging/iio/adc/max1363_ring.c | 65 ++-
5 files changed, 548 insertions(+), 404 deletions(-)
diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index 3989c0c..101ea4b 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -7,6 +7,7 @@ config MAX1363
tristate "MAXIM max1363 ADC driver"
depends on I2C
select IIO_TRIGGER if IIO_RING_BUFFER
+ select MAX1363_RING_BUFFER
help
Say yes here to build support for many MAXIM i2c analog to digital
convertors (ADC). (max1361, max1362, max1363, max1364, max1136,
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index 08cee5c..18c9376 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -3,6 +3,6 @@
#
max1363-y := max1363_core.o
-max1363-$(CONFIG_MAX1363_RING_BUFFER) += max1363_ring.o
+max1363-y += max1363_ring.o
obj-$(CONFIG_MAX1363) += max1363.o
diff --git a/drivers/staging/iio/adc/max1363.h b/drivers/staging/iio/adc/max1363.h
index c112fbe..72cf367 100644
--- a/drivers/staging/iio/adc/max1363.h
+++ b/drivers/staging/iio/adc/max1363.h
@@ -72,77 +72,54 @@
* @numvals: The number of values returned by a single scan
*/
struct max1363_mode {
- const char *name;
int8_t conf;
- int numvals;
+ long modemask;
};
-#define MAX1363_MODE_SINGLE(_num) { \
- .name = #_num, \
- .conf = MAX1363_CHANNEL_SEL(_num) \
+#define MAX1363_MODE_SINGLE(_num, _mask) { \
+ .conf = MAX1363_CHANNEL_SEL(_num) \
| MAX1363_CONFIG_SCAN_SINGLE_1 \
| MAX1363_CONFIG_SE, \
- .numvals = 1, \
+ .modemask = _mask, \
}
-#define MAX1363_MODE_SINGLE_TIMES_8(_num) { \
- .name = #_num"x8", \
- .conf = MAX1363_CHANNEL_SEL(_num) \
- | MAX1363_CONFIG_SCAN_SINGLE_8 \
- | MAX1363_CONFIG_SE, \
- .numvals = 8, \
- }
-
-#define MAX1363_MODE_SCAN_TO_CHANNEL(_num) { \
- .name = "0..."#_num, \
- .conf = MAX1363_CHANNEL_SEL(_num) \
+#define MAX1363_MODE_SCAN_TO_CHANNEL(_num, _mask) { \
+ .conf = MAX1363_CHANNEL_SEL(_num) \
| MAX1363_CONFIG_SCAN_TO_CS \
| MAX1363_CONFIG_SE, \
- .numvals = _num + 1, \
+ .modemask = _mask, \
}
/* note not available for max1363 hence naming */
-#define MAX1236_MODE_SCAN_MID_TO_CHANNEL(_mid, _num) { \
- .name = #_mid"..."#_num, \
- .conf = MAX1363_CHANNEL_SEL(_num) \
+#define MAX1236_MODE_SCAN_MID_TO_CHANNEL(_mid, _num, _mask) { \
+ .conf = MAX1363_CHANNEL_SEL(_num) \
| MAX1236_SCAN_MID_TO_CHANNEL \
| MAX1363_CONFIG_SE, \
- .numvals = _num - _mid + 1 \
+ .modemask = _mask \
}
-#define MAX1363_MODE_DIFF_SINGLE(_nump, _numm) { \
- .name = #_nump"-"#_numm, \
- .conf = MAX1363_CHANNEL_SEL(_nump) \
+#define MAX1363_MODE_DIFF_SINGLE(_nump, _numm, _mask) { \
+ .conf = MAX1363_CHANNEL_SEL(_nump) \
| MAX1363_CONFIG_SCAN_SINGLE_1 \
| MAX1363_CONFIG_DE, \
- .numvals = 1, \
- }
-
-#define MAX1363_MODE_DIFF_SINGLE_TIMES_8(_nump, _numm) { \
- .name = #_nump"-"#_numm, \
- .conf = MAX1363_CHANNEL_SEL(_nump) \
- | MAX1363_CONFIG_SCAN_SINGLE_8 \
- | MAX1363_CONFIG_DE, \
- .numvals = 1, \
+ .modemask = _mask \
}
/* Can't think how to automate naming so specify for now */
-#define MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(_name, _num, _numvals) { \
- .name = #_name, \
- .conf = MAX1363_CHANNEL_SEL(_num) \
+#define MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(_num, _numvals, _mask) { \
+ .conf = MAX1363_CHANNEL_SEL(_num) \
| MAX1363_CONFIG_SCAN_TO_CS \
| MAX1363_CONFIG_DE, \
- .numvals = _numvals, \
+ .modemask = _mask \
}
/* note only available for max1363 hence naming */
-#define MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL_NAMED(_name, _num, _numvals) { \
- .name = #_name, \
- .conf = MAX1363_CHANNEL_SEL(_num) \
+#define MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(_num, _numvals, _mask) { \
+ .conf = MAX1363_CHANNEL_SEL(_num) \
| MAX1236_SCAN_MID_TO_CHANNEL \
| MAX1363_CONFIG_SE, \
- .numvals = _numvals, \
+ .modemask = _mask \
}
/* Not currently handled */
@@ -158,35 +135,43 @@ struct max1363_mode {
* clear what all the various options actually do. Alternative suggestions
* that don't require user to have intimate knowledge of the chip welcomed.
*/
+enum max1363_channels {
+ max1363_in0, max1363_in1, max1363_in2, max1363_in3,
+ max1363_in4, max1363_in5, max1363_in6, max1363_in7,
+ max1363_in8, max1363_in9, max1363_in10, max1363_in11,
+
+ max1363_in0min1, max1363_in2min3,
+ max1363_in4min5, max1363_in6min7,
+ max1363_in8min9, max1363_in10min11,
+
+ max1363_in1min0, max1363_in3min2,
+ max1363_in5min4, max1363_in7min6,
+ max1363_in9min8, max1363_in11min10,
+ };
/* This must be maintained along side the max1363_mode_table in max1363_core */
enum max1363_modes {
/* Single read of a single channel */
_s0, _s1, _s2, _s3, _s4, _s5, _s6, _s7, _s8, _s9, _s10, _s11,
- /* Eight reads of a single channel */
- se0, se1, se2, se3, se4, se5, se6, se7, se8, se9, se10, se11,
- /* Scan to channel */
- s0to1, s0to2, s0to3, s0to4, s0to5, s0to6,
- s0to7, s0to8, s0to9, s0to10, s0to11,
/* Differential single read */
d0m1, d2m3, d4m5, d6m7, d8m9, d10m11,
d1m0, d3m2, d5m4, d7m6, d9m8, d11m10,
- /* Differential single read 8 times */
- de0m1, de2m3, de4m5, de6m7, de8m9, de10m11,
- de1m0, de3m2, de5m4, de7m6, de9m8, de11m10,
- /* Differential scan to channel */
- d0m1to2m3, d0m1to4m5, d0m1to6m7, d0m1to8m9, d0m1to10m11,
- d1m0to3m2, d1m0to5m4, d1m0to7m6, d1m0to9m8, d1m0to11m10,
- /* Scan mid to channel max123{6-9} only */
- s2to3, s6to7, s6to8, s6to9, s6to10, s6to11,
- /* Differential scan mid to channel */
- s6m7to8m9, s6m7to10m11, s7m6to9m8, s7m6to11m10,
+ /* Scan to channel and mid to channel where overlapping */
+ s0to1, s0to2, s2to3, s0to3, s0to4, s0to5, s0to6,
+ s6to7, s0to7, s6to8, s0to8, s6to9,
+ s0to9, s6to10, s0to10, s6to11, s0to11,
+ /* Differential scan to channel and mid to channel where overlapping */
+ d0m1to2m3, d0m1to4m5, d0m1to6m7, d6m7to8m9,
+ d0m1to8m9, d6m7to10m11, d0m1to10m11, d1m0to3m2,
+ d1m0to5m4, d1m0to7m6, d7m6to9m8, d1m0to9m8,
+ d7m6to11m10, d1m0to11m10,
};
/**
* struct max1363_chip_info - chip specifc information
* @name: indentification string for chip
* @num_inputs: number of physical inputs on chip
+ * @bits: accuracy of the adc in bits
* @int_vref_mv: the internal reference voltage
* @monitor_mode: whether the chip supports monitor interrupts
* @mode_list: array of available scan modes
@@ -196,11 +181,14 @@ enum max1363_modes {
struct max1363_chip_info {
const char *name;
u8 num_inputs;
+ u8 bits;
u16 int_vref_mv;
bool monitor_mode;
const enum max1363_modes *mode_list;
int num_modes;
enum max1363_modes default_mode;
+ struct attribute_group *dev_attrs;
+ struct attribute_group *scan_attrs;
};
@@ -212,6 +200,7 @@ struct max1363_chip_info {
* @configbyte: cache of current device config byte
* @chip_info: chip model specific constants, available modes etc
* @current_mode: the scan mode of this chip
+ * @requestedmask: a valid requested set of channels
* @poll_work: bottom half of polling interrupt handler
* @protect_ring: used to ensure only one polling bh running at a time
* @reg: supply regulator
@@ -223,16 +212,21 @@ struct max1363_state {
char configbyte;
const struct max1363_chip_info *chip_info;
const struct max1363_mode *current_mode;
+ u32 requestedmask;
struct work_struct poll_work;
atomic_t protect_ring;
struct iio_trigger *trig;
struct regulator *reg;
};
+
+const struct max1363_mode
+*max1363_match_mode(u32 mask, const struct max1363_chip_info *ci);
+
+int max1363_set_scan_mode(struct max1363_state *st);
+
#ifdef CONFIG_MAX1363_RING_BUFFER
-ssize_t max1363_scan_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
+int max1363_single_channel_from_ring(long mask, struct max1363_state *st);
int max1363_register_ring_funcs_and_init(struct iio_dev *indio_dev);
void max1363_ring_cleanup(struct iio_dev *indio_dev);
@@ -250,14 +244,12 @@ static inline int max1363_initialize_ring(struct iio_ring_buffer *ring)
return 0;
};
-
-static inline ssize_t max1363_scan_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+int max1363_single_channel_from_ring(long mask, struct max1363_state *st)
{
- return 0;
+ return -EINVAL;
};
+
static inline int
max1363_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
diff --git a/drivers/staging/iio/adc/max1363_core.c b/drivers/staging/iio/adc/max1363_core.c
index 790d1cc..e82f3e7 100644
--- a/drivers/staging/iio/adc/max1363_core.c
+++ b/drivers/staging/iio/adc/max1363_core.c
@@ -1,27 +1,26 @@
/*
- * linux/drivers/industrialio/adc/max1363.c
- * Copyright (C) 2008 Jonathan Cameron
- *
- * based on linux/drivers/i2c/chips/max123x
- * Copyright (C) 2002-2004 Stefan Eletzhofer
- *
- * based on linux/drivers/acron/char/pcf8583.c
- * Copyright (C) 2000 Russell King
- *
- * 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.
- *
- * max1363.c
- *
- * Partial support for max1363 and similar chips.
- *
- * Not currently implemented.
- *
- * - Monitor interrrupt generation.
- * - Control of internal reference.
- * - Sysfs scan interface currently assumes unipolar mode.
- */
+ * iio/adc/max1363.c
+ * Copyright (C) 2008-2010 Jonathan Cameron
+ *
+ * based on linux/drivers/i2c/chips/max123x
+ * Copyright (C) 2002-2004 Stefan Eletzhofer
+ *
+ * based on linux/drivers/acron/char/pcf8583.c
+ * Copyright (C) 2000 Russell King
+ *
+ * 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.
+ *
+ * max1363.c
+ *
+ * Partial support for max1363 and similar chips.
+ *
+ * Not currently implemented.
+ *
+ * - Monitor interrrupt generation.
+ * - Control of internal reference.
+ */
#include <linux/interrupt.h>
#include <linux/gpio.h>
@@ -38,118 +37,318 @@
#include "../iio.h"
#include "../sysfs.h"
+#include "../ring_generic.h"
+#include "adc.h"
#include "max1363.h"
-/* Available scan modes.
- * Awkwardly the associated enum is in the header so it is available to
- * the ring buffer code.
- */
-static const struct max1363_mode max1363_mode_table[] = {
- MAX1363_MODE_SINGLE(0),
- MAX1363_MODE_SINGLE(1),
- MAX1363_MODE_SINGLE(2),
- MAX1363_MODE_SINGLE(3),
- MAX1363_MODE_SINGLE(4),
- MAX1363_MODE_SINGLE(5),
- MAX1363_MODE_SINGLE(6),
- MAX1363_MODE_SINGLE(7),
- MAX1363_MODE_SINGLE(8),
- MAX1363_MODE_SINGLE(9),
- MAX1363_MODE_SINGLE(10),
- MAX1363_MODE_SINGLE(11),
-
- MAX1363_MODE_SINGLE_TIMES_8(0),
- MAX1363_MODE_SINGLE_TIMES_8(1),
- MAX1363_MODE_SINGLE_TIMES_8(2),
- MAX1363_MODE_SINGLE_TIMES_8(3),
- MAX1363_MODE_SINGLE_TIMES_8(4),
- MAX1363_MODE_SINGLE_TIMES_8(5),
- MAX1363_MODE_SINGLE_TIMES_8(6),
- MAX1363_MODE_SINGLE_TIMES_8(7),
- MAX1363_MODE_SINGLE_TIMES_8(8),
- MAX1363_MODE_SINGLE_TIMES_8(9),
- MAX1363_MODE_SINGLE_TIMES_8(10),
- MAX1363_MODE_SINGLE_TIMES_8(11),
-
- MAX1363_MODE_SCAN_TO_CHANNEL(1),
- MAX1363_MODE_SCAN_TO_CHANNEL(2),
- MAX1363_MODE_SCAN_TO_CHANNEL(3),
- MAX1363_MODE_SCAN_TO_CHANNEL(4),
- MAX1363_MODE_SCAN_TO_CHANNEL(5),
- MAX1363_MODE_SCAN_TO_CHANNEL(6),
- MAX1363_MODE_SCAN_TO_CHANNEL(7),
- MAX1363_MODE_SCAN_TO_CHANNEL(8),
- MAX1363_MODE_SCAN_TO_CHANNEL(9),
- MAX1363_MODE_SCAN_TO_CHANNEL(10),
- MAX1363_MODE_SCAN_TO_CHANNEL(11),
-
- MAX1363_MODE_DIFF_SINGLE(0, 1),
- MAX1363_MODE_DIFF_SINGLE(2, 3),
- MAX1363_MODE_DIFF_SINGLE(4, 5),
- MAX1363_MODE_DIFF_SINGLE(6, 7),
- MAX1363_MODE_DIFF_SINGLE(8, 9),
- MAX1363_MODE_DIFF_SINGLE(10, 11),
- MAX1363_MODE_DIFF_SINGLE(1, 0),
- MAX1363_MODE_DIFF_SINGLE(3, 2),
- MAX1363_MODE_DIFF_SINGLE(5, 4),
- MAX1363_MODE_DIFF_SINGLE(7, 6),
- MAX1363_MODE_DIFF_SINGLE(9, 8),
- MAX1363_MODE_DIFF_SINGLE(11, 10),
-
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(0, 1),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(2, 3),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(4, 5),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(6, 7),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(8, 9),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(10, 11),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(1, 0),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(3, 2),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(5, 4),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(7, 6),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(9, 8),
- MAX1363_MODE_DIFF_SINGLE_TIMES_8(11, 10),
-
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(0-1...2-3, 2, 2),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(0-1...4-5, 4, 3),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(0-1...6-7, 6, 4),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(0-1...8-9, 8, 5),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(0-1...10-11, 10, 6),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(1-0...3-2, 3, 2),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(1-0...5-4, 5, 3),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(1-0...7-6, 7, 4),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(1-0...9-8, 9, 5),
- MAX1363_MODE_DIFF_SCAN_TO_CHANNEL_NAMED(1-0...11-10, 11, 6),
-
- MAX1236_MODE_SCAN_MID_TO_CHANNEL(2, 3),
- MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 7),
- MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 8),
- MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 9),
- MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 10),
- MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 11),
-
- MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL_NAMED(6-7...8-9, 8, 2),
- MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL_NAMED(6-7...10-11, 10, 3),
- MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL_NAMED(7-6...9-8, 9, 2),
- MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL_NAMED(7-6...11-10, 11, 3),
+/* Here we claim all are 16 bits. This currently does no harm and saves
+ * us a lot of scan element listings */
+
+#define MAX1363_SCAN_EL(number) \
+ IIO_SCAN_EL_C(in##number, number, IIO_UNSIGNED(16), 0, NULL);
+#define MAX1363_SCAN_EL_D(p, n, number) \
+ IIO_SCAN_NAMED_EL_C(in##p##m##in##n, in##p-in##n, \
+ number, IIO_SIGNED(16), 0 , NULL);
+
+static MAX1363_SCAN_EL(0);
+static MAX1363_SCAN_EL(1);
+static MAX1363_SCAN_EL(2);
+static MAX1363_SCAN_EL(3);
+static MAX1363_SCAN_EL(4);
+static MAX1363_SCAN_EL(5);
+static MAX1363_SCAN_EL(6);
+static MAX1363_SCAN_EL(7);
+static MAX1363_SCAN_EL(8);
+static MAX1363_SCAN_EL(9);
+static MAX1363_SCAN_EL(10);
+static MAX1363_SCAN_EL(11);
+static MAX1363_SCAN_EL_D(0, 1, 12);
+static MAX1363_SCAN_EL_D(2, 3, 13);
+static MAX1363_SCAN_EL_D(4, 5, 14);
+static MAX1363_SCAN_EL_D(6, 7, 15);
+static MAX1363_SCAN_EL_D(8, 9, 16);
+static MAX1363_SCAN_EL_D(10, 11, 17);
+static MAX1363_SCAN_EL_D(1, 0, 18);
+static MAX1363_SCAN_EL_D(3, 2, 19);
+static MAX1363_SCAN_EL_D(5, 4, 20);
+static MAX1363_SCAN_EL_D(7, 6, 21);
+static MAX1363_SCAN_EL_D(9, 8, 22);
+static MAX1363_SCAN_EL_D(11, 10, 23);
+
+static const struct max1363_mode max1363_mode_table[] = {
+ /* All of the single channel options first */
+ MAX1363_MODE_SINGLE(0, 1 << 0),
+ MAX1363_MODE_SINGLE(1, 1 << 1),
+ MAX1363_MODE_SINGLE(2, 1 << 2),
+ MAX1363_MODE_SINGLE(3, 1 << 3),
+ MAX1363_MODE_SINGLE(4, 1 << 4),
+ MAX1363_MODE_SINGLE(5, 1 << 5),
+ MAX1363_MODE_SINGLE(6, 1 << 6),
+ MAX1363_MODE_SINGLE(7, 1 << 7),
+ MAX1363_MODE_SINGLE(8, 1 << 8),
+ MAX1363_MODE_SINGLE(9, 1 << 9),
+ MAX1363_MODE_SINGLE(10, 1 << 10),
+ MAX1363_MODE_SINGLE(11, 1 << 11),
+
+ MAX1363_MODE_DIFF_SINGLE(0, 1, 1 << 12),
+ MAX1363_MODE_DIFF_SINGLE(2, 3, 1 << 13),
+ MAX1363_MODE_DIFF_SINGLE(4, 5, 1 << 14),
+ MAX1363_MODE_DIFF_SINGLE(6, 7, 1 << 15),
+ MAX1363_MODE_DIFF_SINGLE(8, 9, 1 << 16),
+ MAX1363_MODE_DIFF_SINGLE(10, 11, 1 << 17),
+ MAX1363_MODE_DIFF_SINGLE(1, 0, 1 << 18),
+ MAX1363_MODE_DIFF_SINGLE(3, 2, 1 << 19),
+ MAX1363_MODE_DIFF_SINGLE(5, 4, 1 << 20),
+ MAX1363_MODE_DIFF_SINGLE(7, 6, 1 << 21),
+ MAX1363_MODE_DIFF_SINGLE(9, 8, 1 << 22),
+ MAX1363_MODE_DIFF_SINGLE(11, 10, 1 << 23),
+
+ /* The multichannel scans next */
+ MAX1363_MODE_SCAN_TO_CHANNEL(1, 0x003),
+ MAX1363_MODE_SCAN_TO_CHANNEL(2, 0x007),
+ MAX1236_MODE_SCAN_MID_TO_CHANNEL(2, 3, 0x00C),
+ MAX1363_MODE_SCAN_TO_CHANNEL(3, 0x00F),
+ MAX1363_MODE_SCAN_TO_CHANNEL(4, 0x01F),
+ MAX1363_MODE_SCAN_TO_CHANNEL(5, 0x03F),
+ MAX1363_MODE_SCAN_TO_CHANNEL(6, 0x07F),
+ MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 7, 0x0C0),
+ MAX1363_MODE_SCAN_TO_CHANNEL(7, 0x0FF),
+ MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 8, 0x1C0),
+ MAX1363_MODE_SCAN_TO_CHANNEL(8, 0x1FF),
+ MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 9, 0x3C0),
+ MAX1363_MODE_SCAN_TO_CHANNEL(9, 0x3FF),
+ MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 10, 0x7C0),
+ MAX1363_MODE_SCAN_TO_CHANNEL(10, 0x7FF),
+ MAX1236_MODE_SCAN_MID_TO_CHANNEL(6, 11, 0xFC0),
+ MAX1363_MODE_SCAN_TO_CHANNEL(11, 0xFFF),
+
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(2, 2, 0x003000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(4, 3, 0x007000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(6, 4, 0x00F000),
+ MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(8, 2, 0x018000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(8, 5, 0x01F000),
+ MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(10, 3, 0x038000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(10, 6, 0x3F000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(3, 2, 0x0C0000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(5, 3, 0x1C0000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(7, 4, 0x3C0000),
+ MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(9, 2, 0x600000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(9, 5, 0x7C0000),
+ MAX1236_MODE_DIFF_SCAN_MID_TO_CHANNEL(11, 3, 0xE00000),
+ MAX1363_MODE_DIFF_SCAN_TO_CHANNEL(11, 6, 0xFC0000),
};
+const struct max1363_mode
+*max1363_match_mode(u32 mask, const struct max1363_chip_info *ci) {
+ int i;
+ if (mask)
+ for (i = 0; i < ci->num_modes; i++)
+ if (!((~max1363_mode_table[ci->mode_list[i]]
+ .modemask) &
+ mask))
+ return &max1363_mode_table[ci
+ ->mode_list[i]];
+ return 0;
+};
+
+static ssize_t max1363_show_precision(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct max1363_state *st = iio_dev_get_devdata(dev_info);
+ return sprintf(buf, "%d\n", st->chip_info->bits);
+}
+
+static IIO_DEVICE_ATTR(in_precision, S_IRUGO, max1363_show_precision,
+ NULL, 0);
+
+static int max1363_write_basic_config(struct i2c_client *client,
+ unsigned char d1,
+ unsigned char d2)
+{
+ int ret;
+ u8 *tx_buf = kmalloc(2 , GFP_KERNEL);
+
+ if (!tx_buf)
+ return -ENOMEM;
+ tx_buf[0] = d1;
+ tx_buf[1] = d2;
+
+ ret = i2c_master_send(client, tx_buf, 2);
+ kfree(tx_buf);
+
+ return (ret > 0) ? 0 : ret;
+}
+
+int max1363_set_scan_mode(struct max1363_state *st)
+{
+ st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK
+ | MAX1363_SCAN_MASK
+ | MAX1363_SE_DE_MASK);
+ st->configbyte |= st->current_mode->conf;
+
+ return max1363_write_basic_config(st->client,
+ st->setupbyte,
+ st->configbyte);
+}
+
+static ssize_t max1363_read_single_channel(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct max1363_state *st = iio_dev_get_devdata(dev_info);
+ struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+ struct i2c_client *client = st->client;
+ int ret = 0, len = 0;
+ s32 data ;
+ char rxbuf[2];
+ long mask;
+
+ mutex_lock(&dev_info->mlock);
+ /* If ring buffer capture is occuring, query the buffer */
+ if (iio_ring_enabled(dev_info)) {
+ mask = max1363_mode_table[this_attr->address].modemask;
+ data = max1363_single_channel_from_ring(mask, st);
+ if (data < 0) {
+ ret = data;
+ goto error_ret;
+ }
+ } else {
+ /* Check to see if current scan mode is correct */
+ if (st->current_mode !=
+ &max1363_mode_table[this_attr->address]) {
+ /* Update scan mode if needed */
+ st->current_mode
+ = &max1363_mode_table[this_attr->address];
+ ret = max1363_set_scan_mode(st);
+ if (ret)
+ goto error_ret;
+ }
+ /* Get reading */
+ data = i2c_master_recv(client, rxbuf, 2);
+ if (data < 0) {
+ ret = data;
+ goto error_ret;
+ }
+ data = (s32)(rxbuf[1]) | ((s32)(rxbuf[0] & 0x0F)) << 8;
+ }
+ /* Pretty print the result */
+ len = sprintf(buf, "%u\n", data);
+
+error_ret:
+ mutex_unlock(&dev_info->mlock);
+ return ret ? ret : len;
+}
+
+/* Direct read attribtues */
+static IIO_DEV_ATTR_IN_RAW(0, max1363_read_single_channel, _s0);
+static IIO_DEV_ATTR_IN_RAW(1, max1363_read_single_channel, _s1);
+static IIO_DEV_ATTR_IN_RAW(2, max1363_read_single_channel, _s2);
+static IIO_DEV_ATTR_IN_RAW(3, max1363_read_single_channel, _s3);
+static IIO_DEV_ATTR_IN_RAW(4, max1363_read_single_channel, _s4);
+static IIO_DEV_ATTR_IN_RAW(5, max1363_read_single_channel, _s5);
+static IIO_DEV_ATTR_IN_RAW(6, max1363_read_single_channel, _s6);
+static IIO_DEV_ATTR_IN_RAW(7, max1363_read_single_channel, _s7);
+static IIO_DEV_ATTR_IN_RAW(8, max1363_read_single_channel, _s8);
+static IIO_DEV_ATTR_IN_RAW(9, max1363_read_single_channel, _s9);
+static IIO_DEV_ATTR_IN_RAW(10, max1363_read_single_channel, _s10);
+static IIO_DEV_ATTR_IN_RAW(11, max1363_read_single_channel, _s11);
+
+static IIO_DEV_ATTR_IN_DIFF_RAW(0, 1, max1363_read_single_channel, d0m1);
+static IIO_DEV_ATTR_IN_DIFF_RAW(2, 3, max1363_read_single_channel, d2m3);
+static IIO_DEV_ATTR_IN_DIFF_RAW(4, 5, max1363_read_single_channel, d4m5);
+static IIO_DEV_ATTR_IN_DIFF_RAW(6, 7, max1363_read_single_channel, d6m7);
+static IIO_DEV_ATTR_IN_DIFF_RAW(8, 9, max1363_read_single_channel, d8m9);
+static IIO_DEV_ATTR_IN_DIFF_RAW(10, 11, max1363_read_single_channel, d10m11);
+static IIO_DEV_ATTR_IN_DIFF_RAW(1, 0, max1363_read_single_channel, d1m0);
+static IIO_DEV_ATTR_IN_DIFF_RAW(3, 2, max1363_read_single_channel, d3m2);
+static IIO_DEV_ATTR_IN_DIFF_RAW(5, 4, max1363_read_single_channel, d5m4);
+static IIO_DEV_ATTR_IN_DIFF_RAW(7, 6, max1363_read_single_channel, d7m6);
+static IIO_DEV_ATTR_IN_DIFF_RAW(9, 8, max1363_read_single_channel, d9m8);
+static IIO_DEV_ATTR_IN_DIFF_RAW(11, 10, max1363_read_single_channel, d11m10);
+
+
+static ssize_t max1363_show_scale(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ /* Driver currently only support internal vref */
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct max1363_state *st = iio_dev_get_devdata(dev_info);
+ /* Corresponds to Vref / 2^(bits) */
+
+ if ((1 << (st->chip_info->bits + 1))
+ > st->chip_info->int_vref_mv)
+ return sprintf(buf, "0.5\n");
+ else
+ return sprintf(buf, "%d\n",
+ st->chip_info->int_vref_mv >> st->chip_info->bits);
+}
+
+IIO_DEVICE_ATTR(in_scale, S_IRUGO, max1363_show_scale, NULL, 0);
+
+static ssize_t max1363_show_name(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *dev_info = dev_get_drvdata(dev);
+ struct max1363_state *st = iio_dev_get_devdata(dev_info);
+ return sprintf(buf, "%s\n", st->chip_info->name);
+}
+
+IIO_DEVICE_ATTR(name, S_IRUGO, max1363_show_name, NULL, 0);
+
/* Applies to max1363 */
static const enum max1363_modes max1363_mode_list[] = {
_s0, _s1, _s2, _s3,
- se0, se1, se2, se3,
s0to1, s0to2, s0to3,
d0m1, d2m3, d1m0, d3m2,
- de0m1, de2m3, de1m0, de3m2,
d0m1to2m3, d1m0to3m2,
};
+static struct attribute *max1363_device_attrs[] = {
+ &iio_dev_attr_in0_raw.dev_attr.attr,
+ &iio_dev_attr_in1_raw.dev_attr.attr,
+ &iio_dev_attr_in2_raw.dev_attr.attr,
+ &iio_dev_attr_in3_raw.dev_attr.attr,
+ &iio_dev_attr_in0min1_raw.dev_attr.attr,
+ &iio_dev_attr_in2min3_raw.dev_attr.attr,
+ &iio_dev_attr_in1min0_raw.dev_attr.attr,
+ &iio_dev_attr_in3min2_raw.dev_attr.attr,
+ &iio_dev_attr_name.dev_attr.attr,
+ &iio_dev_attr_in_scale.dev_attr.attr,
+ NULL
+};
+
+static struct attribute_group max1363_dev_attr_group = {
+ .attrs = max1363_device_attrs,
+};
+
+static struct attribute *max1363_scan_el_attrs[] = {
+ &iio_scan_el_in0.dev_attr.attr,
+ &iio_scan_el_in1.dev_attr.attr,
+ &iio_scan_el_in2.dev_attr.attr,
+ &iio_scan_el_in3.dev_attr.attr,
+ &iio_scan_el_in0min1.dev_attr.attr,
+ &iio_scan_el_in2min3.dev_attr.attr,
+ &iio_scan_el_in1min0.dev_attr.attr,
+ &iio_scan_el_in3min2.dev_attr.attr,
+ &iio_dev_attr_in_precision.dev_attr.attr,
+ NULL,
+};
+
+static struct attribute_group max1363_scan_el_group = {
+ .name = "scan_elements",
+ .attrs = max1363_scan_el_attrs,
+};
+
/* Appies to max1236, max1237 */
static const enum max1363_modes max1236_mode_list[] = {
_s0, _s1, _s2, _s3,
- se0, se1, se2, se3,
s0to1, s0to2, s0to3,
d0m1, d2m3, d1m0, d3m2,
- de0m1, de2m3, de1m0, de3m2,
d0m1to2m3, d1m0to3m2,
s2to3,
};
@@ -157,19 +356,83 @@ static const enum max1363_modes max1236_mode_list[] = {
/* Applies to max1238, max1239 */
static const enum max1363_modes max1238_mode_list[] = {
_s0, _s1, _s2, _s3, _s4, _s5, _s6, _s7, _s8, _s9, _s10, _s11,
- se0, se1, se2, se3, se4, se5, se6, se7, se8, se9, se10, se11,
s0to1, s0to2, s0to3, s0to4, s0to5, s0to6,
s0to7, s0to8, s0to9, s0to10, s0to11,
d0m1, d2m3, d4m5, d6m7, d8m9, d10m11,
d1m0, d3m2, d5m4, d7m6, d9m8, d11m10,
- de0m1, de2m3, de4m5, de6m7, de8m9, de10m11,
- de1m0, de3m2, de5m4, de7m6, de9m8, de11m10,
d0m1to2m3, d0m1to4m5, d0m1to6m7, d0m1to8m9, d0m1to10m11,
d1m0to3m2, d1m0to5m4, d1m0to7m6, d1m0to9m8, d1m0to11m10,
s6to7, s6to8, s6to9, s6to10, s6to11,
- s6m7to8m9, s6m7to10m11, s7m6to9m8, s7m6to11m10,
+ d6m7to8m9, d6m7to10m11, d7m6to9m8, d7m6to11m10,
};
+static struct attribute *max1238_device_attrs[] = {
+ &iio_dev_attr_in0_raw.dev_attr.attr,
+ &iio_dev_attr_in1_raw.dev_attr.attr,
+ &iio_dev_attr_in2_raw.dev_attr.attr,
+ &iio_dev_attr_in3_raw.dev_attr.attr,
+ &iio_dev_attr_in4_raw.dev_attr.attr,
+ &iio_dev_attr_in5_raw.dev_attr.attr,
+ &iio_dev_attr_in6_raw.dev_attr.attr,
+ &iio_dev_attr_in7_raw.dev_attr.attr,
+ &iio_dev_attr_in8_raw.dev_attr.attr,
+ &iio_dev_attr_in9_raw.dev_attr.attr,
+ &iio_dev_attr_in10_raw.dev_attr.attr,
+ &iio_dev_attr_in11_raw.dev_attr.attr,
+ &iio_dev_attr_in0min1_raw.dev_attr.attr,
+ &iio_dev_attr_in2min3_raw.dev_attr.attr,
+ &iio_dev_attr_in4min5_raw.dev_attr.attr,
+ &iio_dev_attr_in6min7_raw.dev_attr.attr,
+ &iio_dev_attr_in8min9_raw.dev_attr.attr,
+ &iio_dev_attr_in10min11_raw.dev_attr.attr,
+ &iio_dev_attr_in1min0_raw.dev_attr.attr,
+ &iio_dev_attr_in3min2_raw.dev_attr.attr,
+ &iio_dev_attr_in5min4_raw.dev_attr.attr,
+ &iio_dev_attr_in7min6_raw.dev_attr.attr,
+ &iio_dev_attr_in9min8_raw.dev_attr.attr,
+ &iio_dev_attr_in11min10_raw.dev_attr.attr,
+ &iio_dev_attr_name.dev_attr.attr,
+ &iio_dev_attr_in_scale.dev_attr.attr,
+ NULL
+};
+
+static struct attribute_group max1238_dev_attr_group = {
+ .attrs = max1238_device_attrs,
+};
+
+static struct attribute *max1238_scan_el_attrs[] = {
+ &iio_scan_el_in0.dev_attr.attr,
+ &iio_scan_el_in1.dev_attr.attr,
+ &iio_scan_el_in2.dev_attr.attr,
+ &iio_scan_el_in3.dev_attr.attr,
+ &iio_scan_el_in4.dev_attr.attr,
+ &iio_scan_el_in5.dev_attr.attr,
+ &iio_scan_el_in6.dev_attr.attr,
+ &iio_scan_el_in7.dev_attr.attr,
+ &iio_scan_el_in8.dev_attr.attr,
+ &iio_scan_el_in9.dev_attr.attr,
+ &iio_scan_el_in10.dev_attr.attr,
+ &iio_scan_el_in11.dev_attr.attr,
+ &iio_scan_el_in0min1.dev_attr.attr,
+ &iio_scan_el_in2min3.dev_attr.attr,
+ &iio_scan_el_in4min5.dev_attr.attr,
+ &iio_scan_el_in6min7.dev_attr.attr,
+ &iio_scan_el_in8min9.dev_attr.attr,
+ &iio_scan_el_in10min11.dev_attr.attr,
+ &iio_scan_el_in1min0.dev_attr.attr,
+ &iio_scan_el_in3min2.dev_attr.attr,
+ &iio_scan_el_in5min4.dev_attr.attr,
+ &iio_scan_el_in7min6.dev_attr.attr,
+ &iio_scan_el_in9min8.dev_attr.attr,
+ &iio_scan_el_in11min10.dev_attr.attr,
+ &iio_dev_attr_in_precision.dev_attr.attr,
+ NULL,
+};
+
+static struct attribute_group max1238_scan_el_group = {
+ .name = "scan_elements",
+ .attrs = max1238_scan_el_attrs,
+};
enum { max1361,
max1362,
@@ -190,118 +453,130 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
{
.name = "max1361",
.num_inputs = 4,
+ .bits = 10,
+ .int_vref_mv = 2048,
.monitor_mode = 1,
.mode_list = max1363_mode_list,
.num_modes = ARRAY_SIZE(max1363_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1362",
.num_inputs = 4,
+ .bits = 10,
+ .int_vref_mv = 4096,
.monitor_mode = 1,
.mode_list = max1363_mode_list,
.num_modes = ARRAY_SIZE(max1363_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1363",
.num_inputs = 4,
+ .bits = 12,
+ .int_vref_mv = 2048,
.monitor_mode = 1,
.mode_list = max1363_mode_list,
.num_modes = ARRAY_SIZE(max1363_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1364",
.num_inputs = 4,
+ .bits = 12,
+ .int_vref_mv = 4096,
.monitor_mode = 1,
.mode_list = max1363_mode_list,
.num_modes = ARRAY_SIZE(max1363_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1136",
.num_inputs = 4,
+ .bits = 10,
.int_vref_mv = 4096,
.mode_list = max1236_mode_list,
.num_modes = ARRAY_SIZE(max1236_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1137",
.num_inputs = 4,
+ .bits = 10,
.int_vref_mv = 2048,
.mode_list = max1236_mode_list,
.num_modes = ARRAY_SIZE(max1236_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1138",
.num_inputs = 12,
+ .bits = 10,
.int_vref_mv = 4096,
.mode_list = max1238_mode_list,
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
+ .dev_attrs = &max1238_dev_attr_group,
+ .scan_attrs = &max1238_scan_el_group,
}, {
.name = "max1139",
.num_inputs = 12,
+ .bits = 10,
.int_vref_mv = 2048,
.mode_list = max1238_mode_list,
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
+ .dev_attrs = &max1238_dev_attr_group,
+ .scan_attrs = &max1238_scan_el_group,
}, {
.name = "max1236",
.num_inputs = 4,
+ .bits = 12,
.int_vref_mv = 4096,
.mode_list = max1236_mode_list,
.num_modes = ARRAY_SIZE(max1236_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1237",
.num_inputs = 4,
+ .bits = 12,
.int_vref_mv = 2048,
.mode_list = max1236_mode_list,
.num_modes = ARRAY_SIZE(max1236_mode_list),
.default_mode = s0to3,
+ .dev_attrs = &max1363_dev_attr_group,
+ .scan_attrs = &max1363_scan_el_group,
}, {
.name = "max1238",
.num_inputs = 12,
+ .bits = 12,
.int_vref_mv = 4096,
.mode_list = max1238_mode_list,
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
+ .dev_attrs = &max1238_dev_attr_group,
+ .scan_attrs = &max1238_scan_el_group,
}, {
.name = "max1239",
.num_inputs = 12,
+ .bits = 12,
.int_vref_mv = 2048,
.mode_list = max1238_mode_list,
.num_modes = ARRAY_SIZE(max1238_mode_list),
.default_mode = s0to11,
+ .dev_attrs = &max1238_dev_attr_group,
+ .scan_attrs = &max1238_scan_el_group,
},
};
-static int max1363_write_basic_config(struct i2c_client *client,
- unsigned char d1,
- unsigned char d2)
-{
- int ret;
- u8 *tx_buf = kmalloc(2 , GFP_KERNEL);
- if (!tx_buf)
- return -ENOMEM;
- tx_buf[0] = d1;
- tx_buf[1] = d2;
-
- ret = i2c_master_send(client, tx_buf, 2);
- kfree(tx_buf);
- return (ret > 0) ? 0 : ret;
-}
-
-static int max1363_set_scan_mode(struct max1363_state *st)
-{
- st->configbyte &= ~(MAX1363_CHANNEL_SEL_MASK
- | MAX1363_SCAN_MASK
- | MAX1363_SE_DE_MASK);
- st->configbyte |= st->current_mode->conf;
-
- return max1363_write_basic_config(st->client,
- st->setupbyte,
- st->configbyte);
-}
-
static int max1363_initial_setup(struct max1363_state *st)
{
st->setupbyte = MAX1363_SETUP_AIN3_IS_AIN3_REF_IS_VDD
@@ -318,167 +593,6 @@ static int max1363_initial_setup(struct max1363_state *st)
return max1363_set_scan_mode(st);
}
-static ssize_t max1363_show_av_scan_modes(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- struct max1363_state *st = dev_info->dev_data;
- int i, len = 0;
-
- for (i = 0; i < st->chip_info->num_modes; i++)
- len += sprintf(buf + len, "%s ",
- max1363_mode_table[st->chip_info
- ->mode_list[i]].name);
- len += sprintf(buf + len, "\n");
-
- return len;
-}
-
-
-/* The dev here is the sysfs related one, not the underlying i2c one */
-static ssize_t max1363_scan_direct(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- struct max1363_state *st = dev_info->dev_data;
- int len = 0, ret, i;
- struct i2c_client *client = st->client;
- char *rxbuf;
-
- if (st->current_mode->numvals == 0)
- return 0;
- rxbuf = kmalloc(st->current_mode->numvals*2, GFP_KERNEL);
- if (rxbuf == NULL)
- return -ENOMEM;
-
- /* Interpretation depends on whether these are signed or not!*/
- /* Assume not for now */
- ret = i2c_master_recv(client, rxbuf, st->current_mode->numvals*2);
-
- if (ret < 0)
- return ret;
- for (i = 0; i < st->current_mode->numvals; i++)
- len += sprintf(buf+len, "%d ",
- ((int)(rxbuf[i*2+0]&0x0F) << 8)
- + ((int)(rxbuf[i*2+1])));
- kfree(rxbuf);
- len += sprintf(buf + len, "\n");
-
- return len;
-}
-
-static ssize_t max1363_scan(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- int ret;
-
- mutex_lock(&dev_info->mlock);
- if (dev_info->currentmode == INDIO_RING_TRIGGERED)
- ret = max1363_scan_from_ring(dev, attr, buf);
- else
- ret = max1363_scan_direct(dev, attr, buf);
- mutex_unlock(&dev_info->mlock);
-
- return ret;
-}
-
-/* Cannot query the device, so use local copy of state */
-static ssize_t max1363_show_scan_mode(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- struct max1363_state *st = dev_info->dev_data;
-
- return sprintf(buf, "%s\n", st->current_mode->name);
-}
-
-static const struct max1363_mode
-*__max1363_find_mode_in_ci(const struct max1363_chip_info *info,
- const char *buf)
-{
- int i;
- for (i = 0; i < info->num_modes; i++)
- if (strcmp(max1363_mode_table[info->mode_list[i]].name, buf)
- == 0)
- return &max1363_mode_table[info->mode_list[i]];
- return NULL;
-}
-
-static ssize_t max1363_store_scan_mode(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- struct max1363_state *st = dev_info->dev_data;
- const struct max1363_mode *new_mode;
- int ret;
-
- mutex_lock(&dev_info->mlock);
- new_mode = NULL;
- /* Avoid state changes if a ring buffer is enabled */
- if (!iio_ring_enabled(dev_info)) {
- new_mode
- = __max1363_find_mode_in_ci(st->chip_info, buf);
- if (!new_mode) {
- ret = -EINVAL;
- goto error_ret;
- }
- st->current_mode = new_mode;
- ret = max1363_set_scan_mode(st);
- if (ret)
- goto error_ret;
- } else {
- ret = -EBUSY;
- goto error_ret;
- }
- mutex_unlock(&dev_info->mlock);
-
- return len;
-
-error_ret:
- mutex_unlock(&dev_info->mlock);
-
- return ret;
-}
-
-IIO_DEV_ATTR_AVAIL_SCAN_MODES(max1363_show_av_scan_modes);
-IIO_DEV_ATTR_SCAN_MODE(S_IRUGO | S_IWUSR,
- max1363_show_scan_mode,
- max1363_store_scan_mode);
-
-IIO_DEV_ATTR_SCAN(max1363_scan);
-
-static ssize_t max1363_show_name(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- struct max1363_state *st = dev_info->dev_data;
- return sprintf(buf, "%s\n", st->chip_info->name);
-}
-
-IIO_DEVICE_ATTR(name, S_IRUGO, max1363_show_name, NULL, 0);
-
-/*name export */
-
-static struct attribute *max1363_attributes[] = {
- &iio_dev_attr_available_scan_modes.dev_attr.attr,
- &iio_dev_attr_scan_mode.dev_attr.attr,
- &iio_dev_attr_scan.dev_attr.attr,
- &iio_dev_attr_name.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group max1363_attribute_group = {
- .attrs = max1363_attributes,
-};
-
static int __devinit max1363_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -506,6 +620,7 @@ static int __devinit max1363_probe(struct i2c_client *client,
ret = -ENODEV;
goto error_free_st;
}
+
st->reg = regulator_get(&client->dev, "vcc");
if (!IS_ERR(st->reg)) {
ret = regulator_enable(st->reg);
@@ -520,20 +635,36 @@ static int __devinit max1363_probe(struct i2c_client *client,
goto error_disable_reg;
}
+ st->indio_dev->available_scan_masks
+ = kzalloc(GFP_KERNEL,
+ sizeof(*st->indio_dev->available_scan_masks)*
+ (st->chip_info->num_modes + 1));
+ if (!st->indio_dev->available_scan_masks) {
+ ret = -ENOMEM;
+ goto error_free_device;
+ }
+
+ for (i = 0; i < st->chip_info->num_modes; i++)
+ st->indio_dev->available_scan_masks[i] =
+ max1363_mode_table[st->chip_info->mode_list[i]]
+ .modemask;
/* Estabilish that the iio_dev is a child of the i2c device */
st->indio_dev->dev.parent = &client->dev;
- st->indio_dev->attrs = &max1363_attribute_group;
+ st->indio_dev->attrs = st->chip_info->dev_attrs;
+
+ /* Todo: this shouldn't be here. */
+ st->indio_dev->scan_el_attrs = st->chip_info->scan_attrs;
st->indio_dev->dev_data = (void *)(st);
st->indio_dev->driver_module = THIS_MODULE;
st->indio_dev->modes = INDIO_DIRECT_MODE;
ret = max1363_initial_setup(st);
if (ret)
- goto error_free_device;
+ goto error_free_available_scan_masks;
ret = max1363_register_ring_funcs_and_init(st->indio_dev);
if (ret)
- goto error_free_device;
+ goto error_free_available_scan_masks;
ret = iio_device_register(st->indio_dev);
if (ret)
@@ -545,6 +676,8 @@ static int __devinit max1363_probe(struct i2c_client *client,
return 0;
error_cleanup_ring:
max1363_ring_cleanup(st->indio_dev);
+error_free_available_scan_masks:
+ kfree(st->indio_dev->available_scan_masks);
error_free_device:
if (!regdone)
iio_free_device(st->indio_dev);
@@ -569,6 +702,7 @@ static int max1363_remove(struct i2c_client *client)
struct iio_dev *indio_dev = st->indio_dev;
max1363_uninitialize_ring(indio_dev->ring);
max1363_ring_cleanup(indio_dev);
+ kfree(st->indio_dev->available_scan_masks);
iio_device_unregister(indio_dev);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);
diff --git a/drivers/staging/iio/adc/max1363_ring.c b/drivers/staging/iio/adc/max1363_ring.c
index f94fe2d..6003f7e 100644
--- a/drivers/staging/iio/adc/max1363_ring.c
+++ b/drivers/staging/iio/adc/max1363_ring.c
@@ -17,6 +17,7 @@
#include <linux/sysfs.h>
#include <linux/list.h>
#include <linux/i2c.h>
+#include <linux/bitops.h>
#include "../iio.h"
#include "../ring_generic.h"
@@ -26,32 +27,36 @@
#include "max1363.h"
-ssize_t max1363_scan_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+/* Todo: test this */
+int max1363_single_channel_from_ring(long mask, struct max1363_state *st)
{
- struct iio_dev *dev_info = dev_get_drvdata(dev);
- struct max1363_state *info = dev_info->dev_data;
- int i, ret, len = 0;
- char *ring_data;
+ unsigned long numvals;
+ int count = 0, ret;
+ u8 *ring_data;
+ if (!(st->current_mode->modemask & mask)) {
+ ret = -EBUSY;
+ goto error_ret;
+ }
+ numvals = hweight_long(st->current_mode->modemask);
- ring_data = kmalloc(info->current_mode->numvals*2, GFP_KERNEL);
+ ring_data = kmalloc(numvals*2, GFP_KERNEL);
if (ring_data == NULL) {
ret = -ENOMEM;
goto error_ret;
}
- ret = dev_info->ring->access.read_last(dev_info->ring, ring_data);
+ ret = st->indio_dev->ring->access.read_last(st->indio_dev->ring,
+ ring_data);
if (ret)
goto error_free_ring_data;
- len += sprintf(buf+len, "ring ");
- for (i = 0; i < info->current_mode->numvals; i++)
- len += sprintf(buf + len, "%d ",
- ((int)(ring_data[i*2 + 0] & 0x0F) << 8)
- + ((int)(ring_data[i*2 + 1])));
- len += sprintf(buf + len, "\n");
- kfree(ring_data);
-
- return len;
+ /* Need a count of channels prior to this one */
+ mask >>= 1;
+ while (mask) {
+ if (mask && st->current_mode->modemask)
+ count++;
+ mask >>= 1;
+ }
+ return ((int)(ring_data[count*2 + 0] & 0x0F) << 8)
+ + (int)(ring_data[count*2 + 1]);
error_free_ring_data:
kfree(ring_data);
@@ -70,9 +75,22 @@ static int max1363_ring_preenable(struct iio_dev *indio_dev)
{
struct max1363_state *st = indio_dev->dev_data;
size_t d_size;
+ unsigned long numvals;
+
+ /*
+ * Need to figure out the current mode based upon the requested
+ * scan mask in iio_dev
+ */
+ st->current_mode = max1363_match_mode(st->indio_dev->scan_mask,
+ st->chip_info);
+ if (!st->current_mode)
+ return -EINVAL;
+
+ max1363_set_scan_mode(st);
+ numvals = hweight_long(st->current_mode->modemask);
if (indio_dev->ring->access.set_bpd) {
- d_size = st->current_mode->numvals*2 + sizeof(s64);
+ d_size = numvals*2 + sizeof(s64);
if (d_size % 8)
d_size += 8 - (d_size % 8);
indio_dev->ring->access.set_bpd(indio_dev->ring, d_size);
@@ -145,9 +163,10 @@ static void max1363_poll_bh_to_ring(struct work_struct *work_s)
__u8 *rxbuf;
int b_sent;
size_t d_size;
+ unsigned long numvals = hweight_long(st->current_mode->modemask);
/* Ensure the timestamp is 8 byte aligned */
- d_size = st->current_mode->numvals*2 + sizeof(s64);
+ d_size = numvals*2 + sizeof(s64);
if (d_size % sizeof(s64))
d_size += sizeof(s64) - (d_size % sizeof(s64));
@@ -159,16 +178,14 @@ static void max1363_poll_bh_to_ring(struct work_struct *work_s)
* might as well have this test in here in the meantime as it does
* no harm.
*/
- if (st->current_mode->numvals == 0)
+ if (numvals == 0)
return;
rxbuf = kmalloc(d_size, GFP_KERNEL);
if (rxbuf == NULL)
return;
- b_sent = i2c_master_recv(st->client,
- rxbuf,
- st->current_mode->numvals*2);
+ b_sent = i2c_master_recv(st->client, rxbuf, numvals*2);
if (b_sent < 0)
goto done;
--
1.7.0.3
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