[PATCH 08/19] staging:iio:max1363 move to new abi.
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From: Jonathan Cameron on 26 Apr 2010 15:40 Signed-off-by: Jonathan Cameron <jic23(a)cam.ac.uk> --- 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; -- 1.6.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |