cregit-Linux how code gets into the kernel

Release 4.11 drivers/mfd/ab8500-core.c

Directory: drivers/mfd
/*
 * Copyright (C) ST-Ericsson SA 2010
 *
 * License Terms: GNU General Public License v2
 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
 * Author: Rabin Vincent <rabin.vincent@stericsson.com>
 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
#include <linux/mfd/dbx500-prcmu.h>
#include <linux/regulator/ab8500.h>
#include <linux/of.h>
#include <linux/of_device.h>

/*
 * Interrupt register offsets
 * Bank : 0x0E
 */

#define AB8500_IT_SOURCE1_REG		0x00

#define AB8500_IT_SOURCE2_REG		0x01

#define AB8500_IT_SOURCE3_REG		0x02

#define AB8500_IT_SOURCE4_REG		0x03

#define AB8500_IT_SOURCE5_REG		0x04

#define AB8500_IT_SOURCE6_REG		0x05

#define AB8500_IT_SOURCE7_REG		0x06

#define AB8500_IT_SOURCE8_REG		0x07

#define AB9540_IT_SOURCE13_REG		0x0C

#define AB8500_IT_SOURCE19_REG		0x12

#define AB8500_IT_SOURCE20_REG		0x13

#define AB8500_IT_SOURCE21_REG		0x14

#define AB8500_IT_SOURCE22_REG		0x15

#define AB8500_IT_SOURCE23_REG		0x16

#define AB8500_IT_SOURCE24_REG		0x17

/*
 * latch registers
 */

#define AB8500_IT_LATCH1_REG		0x20

#define AB8500_IT_LATCH2_REG		0x21

#define AB8500_IT_LATCH3_REG		0x22

#define AB8500_IT_LATCH4_REG		0x23

#define AB8500_IT_LATCH5_REG		0x24

#define AB8500_IT_LATCH6_REG		0x25

#define AB8500_IT_LATCH7_REG		0x26

#define AB8500_IT_LATCH8_REG		0x27

#define AB8500_IT_LATCH9_REG		0x28

#define AB8500_IT_LATCH10_REG		0x29

#define AB8500_IT_LATCH12_REG		0x2B

#define AB9540_IT_LATCH13_REG		0x2C

#define AB8500_IT_LATCH19_REG		0x32

#define AB8500_IT_LATCH20_REG		0x33

#define AB8500_IT_LATCH21_REG		0x34

#define AB8500_IT_LATCH22_REG		0x35

#define AB8500_IT_LATCH23_REG		0x36

#define AB8500_IT_LATCH24_REG		0x37

/*
 * mask registers
 */


#define AB8500_IT_MASK1_REG		0x40

#define AB8500_IT_MASK2_REG		0x41

#define AB8500_IT_MASK3_REG		0x42

#define AB8500_IT_MASK4_REG		0x43

#define AB8500_IT_MASK5_REG		0x44

#define AB8500_IT_MASK6_REG		0x45

#define AB8500_IT_MASK7_REG		0x46

#define AB8500_IT_MASK8_REG		0x47

#define AB8500_IT_MASK9_REG		0x48

#define AB8500_IT_MASK10_REG		0x49

#define AB8500_IT_MASK11_REG		0x4A

#define AB8500_IT_MASK12_REG		0x4B

#define AB8500_IT_MASK13_REG		0x4C

#define AB8500_IT_MASK14_REG		0x4D

#define AB8500_IT_MASK15_REG		0x4E

#define AB8500_IT_MASK16_REG		0x4F

#define AB8500_IT_MASK17_REG		0x50

#define AB8500_IT_MASK18_REG		0x51

#define AB8500_IT_MASK19_REG		0x52

#define AB8500_IT_MASK20_REG		0x53

#define AB8500_IT_MASK21_REG		0x54

#define AB8500_IT_MASK22_REG		0x55

#define AB8500_IT_MASK23_REG		0x56

#define AB8500_IT_MASK24_REG		0x57

#define AB8500_IT_MASK25_REG		0x58

/*
 * latch hierarchy registers
 */

#define AB8500_IT_LATCHHIER1_REG	0x60

#define AB8500_IT_LATCHHIER2_REG	0x61

#define AB8500_IT_LATCHHIER3_REG	0x62

#define AB8540_IT_LATCHHIER4_REG	0x63


#define AB8500_IT_LATCHHIER_NUM		3

#define AB8540_IT_LATCHHIER_NUM		4


#define AB8500_REV_REG			0x80

#define AB8500_IC_NAME_REG		0x82

#define AB8500_SWITCH_OFF_STATUS	0x00


#define AB8500_TURN_ON_STATUS		0x00

#define AB8505_TURN_ON_STATUS_2		0x04


#define AB8500_CH_USBCH_STAT1_REG	0x02

#define VBUS_DET_DBNC100		0x02

#define VBUS_DET_DBNC1			0x01

static DEFINE_SPINLOCK(on_stat_lock);

static u8 turn_on_stat_mask = 0xFF;

static u8 turn_on_stat_set;

static bool no_bm; 
/* No battery management */
/*
 * not really modular, but the easiest way to keep compat with existing
 * bootargs behaviour is to continue using module_param here.
 */
module_param(no_bm, bool, S_IRUGO);


#define AB9540_MODEM_CTRL2_REG			0x23

#define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT	BIT(2)

/*
 * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt
 * numbers are indexed into this array with (num / 8). The interupts are
 * defined in linux/mfd/ab8500.h
 *
 * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at
 * offset 0.
 */
/* AB8500 support */

static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = {
	0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21,
};

/* AB9540 / AB8505 support */

static const int ab9540_irq_regoffset[AB9540_NUM_IRQ_REGS] = {
	0, 1, 2, 3, 4, 6, 7, 8, 9, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22, 23
};

/* AB8540 support */

static const int ab8540_irq_regoffset[AB8540_NUM_IRQ_REGS] = {
	0, 1, 2, 3, 4, -1, -1, -1, -1, 11, 18, 19, 20, 21, 12, 13, 24, 5, 22,
	23, 25, 26, 27, 28, 29, 30, 31,
};


static const char ab8500_version_str[][7] = {
	[AB8500_VERSION_AB8500] = "AB8500",
	[AB8500_VERSION_AB8505] = "AB8505",
	[AB8500_VERSION_AB9540] = "AB9540",
	[AB8500_VERSION_AB8540] = "AB8540",
};


static int ab8500_prcmu_write(struct ab8500 *ab8500, u16 addr, u8 data) { int ret; ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); if (ret < 0) dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); return ret; }

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static int ab8500_prcmu_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask, u8 data) { int ret; ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data, &mask, 1); if (ret < 0) dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); return ret; }

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Lee Jones74100.00%2100.00%
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static int ab8500_prcmu_read(struct ab8500 *ab8500, u16 addr) { int ret; u8 data; ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); if (ret < 0) { dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); return ret; } return (int)data; }

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Lee Jones76100.00%2100.00%
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static int ab8500_get_chip_id(struct device *dev) { struct ab8500 *ab8500; if (!dev) return -EINVAL; ab8500 = dev_get_drvdata(dev->parent); return ab8500 ? (int)ab8500->chip_id : -EINVAL; }

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Mattias Wallin4595.74%266.67%
Rabin Vincent24.26%133.33%
Total47100.00%3100.00%


static int set_register_interruptible(struct ab8500 *ab8500, u8 bank, u8 reg, u8 data) { int ret; /* * Put the u8 bank and u8 register together into a an u16. * The bank on higher 8 bits and register in lower 8 bits. */ u16 addr = ((u16)bank) << 8 | reg; dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data); mutex_lock(&ab8500->lock); ret = ab8500->write(ab8500, addr, data); if (ret < 0) dev_err(ab8500->dev, "failed to write reg %#x: %d\n", addr, ret); mutex_unlock(&ab8500->lock); return ret; }

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Rabin Vincent6260.78%250.00%
Mattias Wallin3938.24%125.00%
Lee Jones10.98%125.00%
Total102100.00%4100.00%


static int ab8500_set_register(struct device *dev, u8 bank, u8 reg, u8 value) { int ret; struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); atomic_inc(&ab8500->transfer_ongoing); ret = set_register_interruptible(ab8500, bank, reg, value); atomic_dec(&ab8500->transfer_ongoing); return ret; }

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Jonas Aaberg2435.82%133.33%
Mattias Wallin2435.82%133.33%
Rabin Vincent1928.36%133.33%
Total67100.00%3100.00%


static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, u8 reg, u8 *value) { int ret; u16 addr = ((u16)bank) << 8 | reg; mutex_lock(&ab8500->lock); ret = ab8500->read(ab8500, addr); if (ret < 0) dev_err(ab8500->dev, "failed to read reg %#x: %d\n", addr, ret); else *value = ret; mutex_unlock(&ab8500->lock); dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); return ret; }

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Rabin Vincent6157.55%266.67%
Mattias Wallin4542.45%133.33%
Total106100.00%3100.00%


static int ab8500_get_register(struct device *dev, u8 bank, u8 reg, u8 *value) { int ret; struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); atomic_inc(&ab8500->transfer_ongoing); ret = get_register_interruptible(ab8500, bank, reg, value); atomic_dec(&ab8500->transfer_ongoing); return ret; }

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Mattias Wallin2841.18%133.33%
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Rabin Vincent1623.53%133.33%
Total68100.00%3100.00%


static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank, u8 reg, u8 bitmask, u8 bitvalues) { int ret; u16 addr = ((u16)bank) << 8 | reg; mutex_lock(&ab8500->lock); if (ab8500->write_masked == NULL) { u8 data; ret = ab8500->read(ab8500, addr); if (ret < 0) { dev_err(ab8500->dev, "failed to read reg %#x: %d\n", addr, ret); goto out; } data = (u8)ret; data = (~bitmask & data) | (bitmask & bitvalues); ret = ab8500->write(ab8500, addr, data); if (ret < 0) dev_err(ab8500->dev, "failed to write reg %#x: %d\n", addr, ret); dev_vdbg(ab8500->dev, "mask: addr %#x => data %#x\n", addr, data); goto out; } ret = ab8500->write_masked(ab8500, addr, bitmask, bitvalues); if (ret < 0) dev_err(ab8500->dev, "failed to modify reg %#x: %d\n", addr, ret); out: mutex_unlock(&ab8500->lock); return ret; }

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Mattias Wallin9343.66%125.00%
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Mattias Nilsson5023.47%125.00%
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static int ab8500_mask_and_set_register(struct device *dev, u8 bank, u8 reg, u8 bitmask, u8 bitvalues) { int ret; struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); atomic_inc(&ab8500->transfer_ongoing); ret = mask_and_set_register_interruptible(ab8500, bank, reg, bitmask, bitvalues); atomic_dec(&ab8500->transfer_ongoing); return ret; }

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Mattias Wallin4663.89%133.33%
Jonas Aaberg2433.33%133.33%
Rabin Vincent22.78%133.33%
Total72100.00%3100.00%

static struct abx500_ops ab8500_ops = { .get_chip_id = ab8500_get_chip_id, .get_register = ab8500_get_register, .set_register = ab8500_set_register, .get_register_page = NULL, .set_register_page = NULL, .mask_and_set_register = ab8500_mask_and_set_register, .event_registers_startup_state_get = NULL, .startup_irq_enabled = NULL, .dump_all_banks = ab8500_dump_all_banks, };
static void ab8500_irq_lock(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); mutex_lock(&ab8500->irq_lock); atomic_inc(&ab8500->transfer_ongoing); }

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Rabin Vincent2362.16%133.33%
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Mark Brown616.22%133.33%
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static void ab8500_irq_sync_unlock(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); int i; for (i = 0; i < ab8500->mask_size; i++) { u8 old = ab8500->oldmask[i]; u8 new = ab8500->mask[i]; int reg; if (new == old) continue; /* * Interrupt register 12 doesn't exist prior to AB8500 version * 2.0 */ if (ab8500->irq_reg_offset[i] == 11 && is_ab8500_1p1_or_earlier(ab8500)) continue; if (ab8500->irq_reg_offset[i] < 0) continue; ab8500->oldmask[i] = new; reg = AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i]; set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new); } atomic_dec(&ab8500->transfer_ongoing); mutex_unlock(&ab8500->irq_lock); }

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Rabin Vincent9564.19%112.50%
Mattias Wallin149.46%225.00%
Linus Walleij138.78%225.00%
Lee Jones128.11%112.50%
Jonas Aaberg85.41%112.50%
Mark Brown64.05%112.50%
Total148100.00%8100.00%


static void ab8500_irq_mask(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); int offset = data->hwirq; int index = offset / 8; int mask = 1 << (offset % 8); ab8500->mask[index] |= mask; /* The AB8500 GPIOs have two interrupts each (rising & falling). */ if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R) ab8500->mask[index + 2] |= mask; if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R) ab8500->mask[index + 1] |= mask; if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R) /* Here the falling IRQ is one bit lower */ ab8500->mask[index] |= (mask << 1); }

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Lee Jones6654.10%240.00%
Rabin Vincent4637.70%120.00%
Mark Brown86.56%120.00%
Linus Walleij21.64%120.00%
Total122100.00%5100.00%


static void ab8500_irq_unmask(struct irq_data *data) { struct ab8500 *ab8500 = irq_data_get_irq_chip_data(data); unsigned int type = irqd_get_trigger_type(data); int offset = data->hwirq; int index = offset / 8; int mask = 1 << (offset % 8); if (type & IRQ_TYPE_EDGE_RISING) ab8500->mask[index] &= ~mask; /* The AB8500 GPIOs have two interrupts each (rising & falling). */ if (type & IRQ_TYPE_EDGE_FALLING) { if (offset >= AB8500_INT_GPIO6R && offset <= AB8500_INT_GPIO41R) ab8500->mask[index + 2] &= ~mask; else if (offset >= AB9540_INT_GPIO50R && offset <= AB9540_INT_GPIO54R) ab8500->mask[index + 1] &= ~mask; else if (offset == AB8540_INT_GPIO43R || offset == AB8540_INT_GPIO44R) /* Here the falling IRQ is one bit lower */ ab8500->mask[index] &= ~(mask << 1); else ab8500->mask[index] &= ~mask; } else { /* Satisfies the case where type is not set. */ ab8500->mask[index] &= ~mask; } }

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Linus Walleij42.27%120.00%
Total176100.00%5100.00%


static int ab8500_irq_set_type(struct irq_data *data, unsigned int type) { return 0; }

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static struct irq_chip ab8500_irq_chip = { .name = "ab8500", .irq_bus_lock = ab8500_irq_lock, .irq_bus_sync_unlock = ab8500_irq_sync_unlock, .irq_mask = ab8500_irq_mask, .irq_disable = ab8500_irq_mask, .irq_unmask = ab8500_irq_unmask, .irq_set_type = ab8500_irq_set_type, };
static void update_latch_offset(u8 *offset, int i) { /* Fix inconsistent ITFromLatch25 bit mapping... */ if (unlikely(*offset == 17)) *offset = 24; /* Fix inconsistent ab8540 bit mapping... */ if (unlikely(*offset == 16)) *offset = 25; if ((i == 3) && (*offset >= 24)) *offset += 2; }

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static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500, int latch_offset, u8 latch_val) { int int_bit, line, i; for (i = 0; i < ab8500->mask_size; i++) if (ab8500->irq_reg_offset[i] == latch_offset) break; if (i >= ab8500->mask_size) { dev_err(ab8500->dev, "Register offset 0x%2x not declared\n", latch_offset); return -ENXIO; } /* ignore masked out interrupts */ latch_val &= ~ab8500->mask[i]; while (latch_val) { int_bit = __ffs(latch_val); line = (i << 3) + int_bit; latch_val &= ~(1 << int_bit); /* * This handles the falling edge hwirqs from the GPIO * lines. Route them back to the line registered for the * rising IRQ, as this is merely a flag for the same IRQ * in linux terms. */ if (line >= AB8500_INT_GPIO6F && line <= AB8500_INT_GPIO41F) line -= 16; if (line >= AB9540_INT_GPIO50F && line <= AB9540_INT_GPIO54F) line -= 8; if (line == AB8540_INT_GPIO43F || line == AB8540_INT_GPIO44F) line += 1; handle_nested_irq(irq_create_mapping(ab8500->domain, line)); } return 0; }

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static int ab8500_handle_hierarchical_latch(struct ab8500 *ab8500, int hier_offset, u8 hier_val) { int latch_bit, status; u8 latch_offset, latch_val; do { latch_bit = __ffs(hier_val); latch_offset = (hier_offset << 3) + latch_bit; update_latch_offset(&latch_offset, hier_offset); status = get_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_LATCH1_REG + latch_offset, &latch_val); if (status < 0 || latch_val == 0) goto discard; status = ab8500_handle_hierarchical_line(ab8500, latch_offset, latch_val); if (status < 0) return status; discard: hier_val &= ~(1 << latch_bit); } while (hier_val); return 0; }

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Michel Jaouen11996.75%150.00%
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static irqreturn_t ab8500_hierarchical_irq(int irq, void *dev) { struct ab8500 *ab8500 = dev; u8 i; dev_vdbg(ab8500->dev, "interrupt\n"); /* Hierarchical interrupt version */ for (i = 0; i < (ab8500->it_latchhier_num); i++) { int status; u8 hier_val; status = get_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_LATCHHIER1_REG + i, &hier_val); if (status < 0 || hier_val == 0) continue; status = ab8500_handle_hierarchical_latch(ab8500, i, hier_val); if (status < 0) break; } return IRQ_HANDLED; }

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Michel Jaouen10195.28%150.00%
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static int ab8500_irq_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hwirq) { struct ab8500 *ab8500 = d->host_data; if (!ab8500) return -EINVAL; irq_set_chip_data(virq, ab8500); irq_set_chip_and_handler(virq, &ab8500_irq_chip, handle_simple_irq); irq_set_nested_thread(virq, 1); irq_set_noprobe(virq); return 0; }

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Lee Jones3551.47%125.00%
Rabin Vincent2536.76%125.00%
Thomas Gleixner45.88%125.00%
Bengt Jonsson45.88%125.00%
Total68100.00%4100.00%

static const struct irq_domain_ops ab8500_irq_ops = { .map = ab8500_irq_map, .xlate = irq_domain_xlate_twocell, };
static int ab8500_irq_init(struct ab8500 *ab8500, struct device_node *np) { int num_irqs; if (is_ab8540(ab8500)) num_irqs = AB8540_NR_IRQS; else if (is_ab9540(ab8500)) num_irqs = AB9540_NR_IRQS; else if (is_ab8505(ab8500)) num_irqs = AB8505_NR_IRQS; else num_irqs = AB8500_NR_IRQS; /* If ->irq_base is zero this will give a linear mapping */ ab8500->domain = irq_domain_add_simple(ab8500->dev->of_node, num_irqs, 0, &ab8500_irq_ops, ab8500); if (!ab8500->domain) { dev_err(ab8500->dev, "Failed to create irqdomain\n"); return -ENODEV; } return 0; }

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Lee Jones5046.73%330.00%
Linus Walleij2119.63%440.00%
Rabin Vincent1917.76%110.00%
Bengt Jonsson1211.21%110.00%
Grygorii Strashko54.67%110.00%
Total107100.00%10100.00%


int ab8500_suspend(struct ab8500 *ab8500) { if (atomic_read(&ab8500->transfer_ongoing)) return -EINVAL; return 0; }

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Jonas Aaberg27100.00%1100.00%
Total27100.00%1100.00%

static const struct mfd_cell ab8500_bm_devs[] = { { .name = "ab8500-charger", .of_compatible = "stericsson,ab8500-charger", .platform_data = &ab8500_bm_data, .pdata_size = sizeof(ab8500_bm_data), }, { .name = "ab8500-btemp", .of_compatible = "stericsson,ab8500-btemp", .platform_data = &ab8500_bm_data, .pdata_size = sizeof(ab8500_bm_data), }, { .name = "ab8500-fg", .of_compatible = "stericsson,ab8500-fg", .platform_data = &ab8500_bm_data, .pdata_size = sizeof(ab8500_bm_data), }, { .name = "ab8500-chargalg", .of_compatible = "stericsson,ab8500-chargalg", .platform_data = &ab8500_bm_data, .pdata_size = sizeof(ab8500_bm_data), }, }; static const struct mfd_cell ab8500_devs[] = { #ifdef CONFIG_DEBUG_FS { .name = "ab8500-debug", .of_compatible = "stericsson,ab8500-debug", }, #endif { .name = "ab8500-sysctrl", .of_compatible = "stericsson,ab8500-sysctrl", }, { .name = "ab8500-ext-regulator", .of_compatible = "stericsson,ab8500-ext-regulator", }, { .name = "ab8500-regulator", .of_compatible = "stericsson,ab8500-regulator", }, { .name = "ab8500-clk", .of_compatible = "stericsson,ab8500-clk", }, { .name = "ab8500-gpadc", .of_compatible = "stericsson,ab8500-gpadc", }, { .name = "ab8500-rtc", .of_compatible = "stericsson,ab8500-rtc", }, { .name = "ab8500-acc-det", .of_compatible = "stericsson,ab8500-acc-det", }, { .name = "ab8500-poweron-key", .of_compatible = "stericsson,ab8500-poweron-key", }, { .name = "ab8500-pwm", .of_compatible = "stericsson,ab8500-pwm", .id = 1, }, { .name = "ab8500-pwm", .of_compatible = "stericsson,ab8500-pwm", .id = 2, }, { .name = "ab8500-pwm", .of_compatible = "stericsson,ab8500-pwm", .id = 3, }, { .name = "ab8500-denc", .of_compatible = "stericsson,ab8500-denc", }, { .name = "pinctrl-ab8500", .of_compatible = "stericsson,ab8500-gpio", }, { .name = "abx500-temp", .of_compatible = "stericsson,abx500-temp", }, { .name = "ab8500-usb", .of_compatible = "stericsson,ab8500-usb", }, { .name = "ab8500-codec", .of_compatible = "stericsson,ab8500-codec", }, }; static const struct mfd_cell ab9540_devs[] = { #ifdef CONFIG_DEBUG_FS { .name = "ab8500-debug", }, #endif { .name = "ab8500-sysctrl", }, { .name = "ab8500-ext-regulator", }, { .name = "ab8500-regulator", }, { .name = "abx500-clk", .of_compatible = "stericsson,abx500-clk", }, { .name = "ab8500-gpadc", .of_compatible = "stericsson,ab8500-gpadc", }, { .name = "ab8500-rtc", }, { .name = "ab8500-acc-det", }, { .name = "ab8500-poweron-key", }, { .name = "ab8500-pwm", .id = 1, }, { .name = "abx500-temp", }, { .name = "pinctrl-ab9540", .of_compatible = "stericsson,ab9540-gpio", }, { .name = "ab9540-usb", }, { .name = "ab9540-codec", }, { .name = "ab-iddet", }, }; /* Device list for ab8505 */ static const struct mfd_cell ab8505_devs[] = { #ifdef CONFIG_DEBUG_FS { .name = "ab8500-debug", }, #endif { .name = "ab8500-sysctrl", }, { .name = "ab8500-regulator", }, { .name = "abx500-clk", .of_compatible = "stericsson,abx500-clk", }, { .name = "ab8500-gpadc", .of_compatible = "stericsson,ab8500-gpadc", }, { .name = "ab8500-rtc", }, { .name = "ab8500-acc-det", }, { .name = "ab8500-poweron-key", }, { .name = "ab8500-pwm", .id = 1, }, { .name = "pinctrl-ab8505", }, { .name = "ab8500-usb", }, { .name = "ab8500-codec", }, { .name = "ab-iddet", }, }; static const struct mfd_cell ab8540_devs[] = { #ifdef CONFIG_DEBUG_FS { .name = "ab8500-debug", }, #endif { .name = "ab8500-sysctrl", }, { .name = "ab8500-ext-regulator", }, { .name = "ab8500-regulator", }, { .name = "abx500-clk", .of_compatible = "stericsson,abx500-clk", }, { .name = "ab8500-gpadc", .of_compatible = "stericsson,ab8500-gpadc", }, { .name = "ab8500-acc-det", }, { .name = "ab8500-poweron-key", }, { .name = "ab8500-pwm", .id = 1, }, { .name = "abx500-temp", }, { .name = "pinctrl-ab8540", }, { .name = "ab8540-usb", }, { .name = "ab8540-codec", }, { .name = "ab-iddet", }, }; static const struct mfd_cell ab8540_cut1_devs[] = { { .name = "ab8500-rtc", .of_compatible = "stericsson,ab8500-rtc", }, }; static const struct mfd_cell ab8540_cut2_devs[] = { { .name = "ab8540-rtc", .of_compatible = "stericsson,ab8540-rtc", }, };
static ssize_t show_chip_id(struct device *dev, struct device_attribute *attr, char *buf) { struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); return sprintf(buf, "%#x\n", ab8500 ? ab8500->chip_id : -EINVAL); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Walleij4693.88%150.00%
Mattias Wallin36.12%150.00%
Total49100.00%2100.00%

/* * ab8500 has switched off due to (SWITCH_OFF_STATUS): * 0x01 Swoff bit programming * 0x02 Thermal protection activation * 0x04 Vbat lower then BattOk falling threshold * 0x08 Watchdog expired * 0x10 Non presence of 32kHz clock * 0x20 Battery level lower than power on reset threshold * 0x40 Power on key 1 pressed longer than 10 seconds * 0x80 DB8500 thermal shutdown */
static ssize_t show_switch_off_status(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u8 value; struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); ret = get_register_interruptible(ab8500, AB8500_RTC, AB8500_SWITCH_OFF_STATUS, &value); if (ret < 0) return ret; return sprintf(buf, "%#x\n", value); }

Contributors

PersonTokensPropCommitsCommitProp
Mattias Wallin71100.00%1100.00%
Total71100.00%1100.00%

/* use mask and set to override the register turn_on_stat value */
void ab8500_override_turn_on_stat(u8 mask, u8 set) { spin_lock(&on_stat_lock); turn_on_stat_mask = mask; turn_on_stat_set = set; spin_unlock(&on_stat_lock); }

Contributors

PersonTokensPropCommitsCommitProp
Rajkumar Kasirajan31100.00%1100.00%
Total31100.00%1100.00%

/* * ab8500 has turned on due to (TURN_ON_STATUS): * 0x01 PORnVbat * 0x02 PonKey1dbF * 0x04 PonKey2dbF * 0x08 RTCAlarm * 0x10 MainChDet * 0x20 VbusDet * 0x40 UsbIDDetect * 0x80 Reserved */
static ssize_t show_turn_on_status(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u8 value; struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, AB8500_TURN_ON_STATUS, &value); if (ret < 0) return ret; /* * In L9540, turn_on_status register is not updated correctly if * the device is rebooted with AC/USB charger connected. Due to * this, the device boots android instead of entering into charge * only mode. Read the AC/USB status register to detect the charger * presence and update the turn on status manually. */ if (is_ab9540(ab8500)) { spin_lock(&on_stat_lock); value = (value & turn_on_stat_mask) | turn_on_stat_set; spin_unlock(&on_stat_lock); } return sprintf(buf, "%#x\n", value); }

Contributors

PersonTokensPropCommitsCommitProp
Andrew Lynn7168.93%150.00%
Rajkumar Kasirajan3231.07%150.00%
Total103100.00%2100.00%


static ssize_t show_turn_on_status_2(struct device *dev, struct device_attribute *attr, char *buf) { int ret; u8 value; struct ab8500 *ab8500; ab8500 = dev_get_drvdata(dev); ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, AB8505_TURN_ON_STATUS_2, &value); if (ret < 0) return ret; return sprintf(buf, "%#x\n", (value & 0x1)); }

Contributors

PersonTokensPropCommitsCommitProp
Lee Jones75100.00%1100.00%
Total75100.00%1100.00%


static ssize_t show_ab9540_dbbrstn(struct device *dev, struct device_attribute *attr, char *buf) { struct ab8500 *ab8500; int ret; u8 value; ab8500 = dev_get_drvdata(dev); ret = get_register_interruptible(ab8500, AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG, &value); if (ret < 0) return ret; return sprintf(buf, "%d\n", (value & AB9540_MODEM_CTRL2_SWDBBRSTN_BIT) ? 1 : 0); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Walleij79100.00%1100.00%
Total79100.00%1100.00%


static ssize_t store_ab9540_dbbrstn(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ab8500 *ab8500; int ret = count; int err; u8 bitvalues; ab8500 = dev_get_drvdata(dev); if (count > 0) { switch (buf[0]) { case '0': bitvalues = 0; break; case '1': bitvalues = AB9540_MODEM_CTRL2_SWDBBRSTN_BIT; break; default: goto exit; } err = mask_and_set_register_interruptible(ab8500, AB8500_REGU_CTRL2, AB9540_MODEM_CTRL2_REG, AB9540_MODEM_CTRL2_SWDBBRSTN_BIT, bitvalues); if (err) dev_info(ab8500->dev, "Failed to set DBBRSTN %c, err %#x\n", buf[0], err); } exit: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Walleij124100.00%1100.00%
Total124100.00%1100.00%

static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); static DEVICE_ATTR(turn_on_status_2, S_IRUGO, show_turn_on_status_2, NULL); static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR, show_ab9540_dbbrstn, store_ab9540_dbbrstn); static struct attribute *ab8500_sysfs_entries[] = { &dev_attr_chip_id.attr, &dev_attr_switch_off_status.attr, &dev_attr_turn_on_status.attr, NULL, }; static struct attribute *ab8505_sysfs_entries[] = { &dev_attr_turn_on_status_2.attr, NULL, }; static struct attribute *ab9540_sysfs_entries[] = { &dev_attr_chip_id.attr, &dev_attr_switch_off_status.attr, &dev_attr_turn_on_status.attr, &dev_attr_dbbrstn.attr, NULL, }; static struct attribute_group ab8500_attr_group = { .attrs = ab8500_sysfs_entries, }; static struct attribute_group ab8505_attr_group = { .attrs = ab8505_sysfs_entries, }; static struct attribute_group ab9540_attr_group = { .attrs = ab9540_sysfs_entries, };
static int ab8500_probe(struct platform_device *pdev) { static const char * const switch_off_status[] = { "Swoff bit programming", "Thermal protection activation", "Vbat lower then BattOk falling threshold", "Watchdog expired", "Non presence of 32kHz clock", "Battery level lower than power on reset threshold", "Power on key 1 pressed longer than 10 seconds", "DB8500 thermal shutdown"}; static const char * const turn_on_status[] = { "Battery rising (Vbat)", "Power On Key 1 dbF", "Power On Key 2 dbF", "RTC Alarm", "Main Charger Detect", "Vbus Detect (USB)", "USB ID Detect", "UART Factory Mode Detect"}; const struct platform_device_id *platid = platform_get_device_id(pdev); enum ab8500_version version = AB8500_VERSION_UNDEFINED; struct device_node *np = pdev->dev.of_node; struct ab8500 *ab8500; struct resource *resource; int ret; int i; u8 value; ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL); if (!ab8500) return -ENOMEM; ab8500->dev = &pdev->dev; resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!resource) { dev_err(&pdev->dev, "no IRQ resource\n"); return -ENODEV; } ab8500->irq = resource->start; ab8500->read = ab8500_prcmu_read; ab8500->write = ab8500_prcmu_write; ab8500->write_masked = ab8500_prcmu_write_masked; mutex_init(&ab8500->lock); mutex_init(&ab8500->irq_lock); atomic_set(&ab8500->transfer_ongoing, 0); platform_set_drvdata(pdev, ab8500); if (platid) version = platid->driver_data; if (version != AB8500_VERSION_UNDEFINED) ab8500->version = version; else { ret = get_register_interruptible(ab8500, AB8500_MISC, AB8500_IC_NAME_REG, &value); if (ret < 0) { dev_err(&pdev->dev, "could not probe HW\n"); return ret; } ab8500->version = value; } ret = get_register_interruptible(ab8500, AB8500_MISC, AB8500_REV_REG, &value); if (ret < 0) return ret; ab8500->chip_id = value; dev_info(ab8500->dev, "detected chip, %s rev. %1x.%1x\n", ab8500_version_str[ab8500->version], ab8500->chip_id >> 4, ab8500->chip_id & 0x0F); /* Configure AB8540 */ if (is_ab8540(ab8500)) { ab8500->mask_size = AB8540_NUM_IRQ_REGS; ab8500->irq_reg_offset = ab8540_irq_regoffset; ab8500->it_latchhier_num = AB8540_IT_LATCHHIER_NUM; } /* Configure AB8500 or AB9540 IRQ */ else if (is_ab9540(ab8500) || is_ab8505(ab8500)) { ab8500->mask_size = AB9540_NUM_IRQ_REGS; ab8500->irq_reg_offset = ab9540_irq_regoffset; ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM; } else { ab8500->mask_size = AB8500_NUM_IRQ_REGS; ab8500->irq_reg_offset = ab8500_irq_regoffset; ab8500->it_latchhier_num = AB8500_IT_LATCHHIER_NUM; } ab8500->mask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL); if (!ab8500->mask) return -ENOMEM; ab8500->oldmask = devm_kzalloc(&pdev->dev, ab8500->mask_size, GFP_KERNEL); if (!ab8500->oldmask) return -ENOMEM; /* * ab8500 has switched off due to (SWITCH_OFF_STATUS): * 0x01 Swoff bit programming * 0x02 Thermal protection activation * 0x04 Vbat lower then BattOk falling threshold * 0x08 Watchdog expired * 0x10 Non presence of 32kHz clock * 0x20 Battery level lower than power on reset threshold * 0x40 Power on key 1 pressed longer than 10 seconds * 0x80 DB8500 thermal shutdown */ ret = get_register_interruptible(ab8500, AB8500_RTC, AB8500_SWITCH_OFF_STATUS, &value); if (ret < 0) return ret; dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value); if (value) { for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) { if (value & 1) pr_cont(" \"%s\"", switch_off_status[i]); value = value >> 1; } pr_cont("\n"); } else { pr_cont(" None\n"); } ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, AB8500_TURN_ON_STATUS, &value); if (ret < 0) return ret; dev_info(ab8500->dev, "turn on reason(s) (%#x): ", value); if (value) { for (i = 0; i < ARRAY_SIZE(turn_on_status); i++) { if (value & 1) pr_cont("\"%s\" ", turn_on_status[i]); value = value >> 1; } pr_cont("\n"); } else { pr_cont("None\n"); } if (is_ab9540(ab8500)) { ret = get_register_interruptible(ab8500, AB8500_CHARGER, AB8500_CH_USBCH_STAT1_REG, &value); if (ret < 0) return ret; if ((value & VBUS_DET_DBNC1) && (value & VBUS_DET_DBNC100)) ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON, AB8500_VBUS_DET); } /* Clear and mask all interrupts */ for (i = 0; i < ab8500->mask_size; i++) { /* * Interrupt register 12 doesn't exist prior to AB8500 version * 2.0 */ if (ab8500->irq_reg_offset[i] == 11 && is_ab8500_1p1_or_earlier(ab8500)) continue; if (ab8500->irq_reg_offset[i] < 0) continue; get_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_LATCH1_REG + ab8500->irq_reg_offset[i], &value); set_register_interruptible(ab8500, AB8500_INTERRUPT, AB8500_IT_MASK1_REG + ab8500->irq_reg_offset[i], 0xff); } ret = abx500_register_ops(ab8500->dev, &ab8500_ops); if (ret) return ret; for (i = 0; i < ab8500->mask_size; i++) ab8500->mask[i] = ab8500->oldmask[i] = 0xff; ret = ab8500_irq_init(ab8500, np); if (ret) return ret; ret = devm_request_threaded_irq(&pdev->dev, ab8500->irq, NULL, ab8500_hierarchical_irq, IRQF_ONESHOT | IRQF_NO_SUSPEND, "ab8500", ab8500); if (ret) return ret; if (is_ab9540(ab8500)) ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs, ARRAY_SIZE(ab9540_devs), NULL, 0, ab8500->domain); else if (is_ab8540(ab8500)) { ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs, ARRAY_SIZE(ab8540_devs), NULL, 0, ab8500->domain); if (ret) return ret; if (is_ab8540_1p2_or_earlier(ab8500)) ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut1_devs, ARRAY_SIZE(ab8540_cut1_devs), NULL, 0, ab8500->domain); else /* ab8540 >= cut2 */ ret = mfd_add_devices(ab8500->dev, 0, ab8540_cut2_devs, ARRAY_SIZE(ab8540_cut2_devs), NULL, 0, ab8500->domain); } else if (is_ab8505(ab8500)) ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs, ARRAY_SIZE(ab8505_devs), NULL, 0, ab8500->domain); else ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, ARRAY_SIZE(ab8500_devs), NULL, 0, ab8500->domain); if (ret) return ret; if (!no_bm) { /* Add battery management devices */ ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs, ARRAY_SIZE(ab8500_bm_devs), NULL, 0, ab8500->domain); if (ret) dev_err(ab8500->dev, "error adding bm devices\n"); } if (((is_ab8505(ab8500) || is_ab9540(ab8500)) && ab8500->chip_id >= AB8500_CUT2P0) || is_ab8540(ab8500)) ret = sysfs_create_group(&ab8500->dev->kobj, &ab9540_attr_group); else ret = sysfs_create_group(&ab8500->dev->kobj, &ab8500_attr_group); if ((is_ab8505(ab8500) || is_ab9540(ab8500)) && ab8500->chip_id >= AB8500_CUT2P0) ret = sysfs_create_group(&ab8500->dev->kobj, &ab8505_attr_group); if (ret) dev_err(ab8500->dev, "error creating sysfs entries\n"); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Lee Jones33826.26%1135.48%
Linus Walleij25719.97%412.90%
Mattias Wallin23117.95%516.13%
Rabin Vincent14611.34%13.23%
Jonas Aaberg917.07%26.45%
Alexandre Torgue624.82%13.23%
Rajkumar Kasirajan524.04%13.23%
Rickard Andersson423.26%13.23%
Virupax Sadashivpetimath282.18%13.23%
Michel Jaouen201.55%13.23%
Mark Brown141.09%13.23%
Bengt Jonsson50.39%13.23%
Dariusz Szymczak10.08%13.23%
Total1287100.00%31100.00%

static const struct platform_device_id ab8500_id[] = { { "ab8500-core", AB8500_VERSION_AB8500 }, { "ab8505-i2c", AB8500_VERSION_AB8505 }, { "ab9540-i2c", AB8500_VERSION_AB9540 }, { "ab8540-i2c", AB8500_VERSION_AB8540 }, { } }; static struct platform_driver ab8500_core_driver = { .driver = { .name = "ab8500-core", .suppress_bind_attrs = true, }, .probe = ab8500_probe, .id_table = ab8500_id, };
static int __init ab8500_core_init(void) { return platform_driver_register(&ab8500_core_driver); }

Contributors

PersonTokensPropCommitsCommitProp
Lee Jones16100.00%1100.00%
Total16100.00%1100.00%

core_initcall(ab8500_core_init);

Overall Contributors

PersonTokensPropCommitsCommitProp
Lee Jones170330.34%2228.95%
Rabin Vincent92916.55%22.63%
Mattias Wallin84415.04%911.84%
Linus Walleij83714.91%1114.47%
Michel Jaouen3626.45%11.32%
Jonas Aaberg2063.67%22.63%
Rajkumar Kasirajan1442.57%11.32%
Alexandre Torgue1021.82%11.32%
Andrew Lynn931.66%11.32%
Rickard Andersson851.51%11.32%
Mattias Nilsson500.89%11.32%
Ulf Hansson460.82%22.63%
Virupax Sadashivpetimath460.82%22.63%
Mark Brown460.82%22.63%
Fabio Baltieri330.59%33.95%
Rajanikanth H.V210.37%45.26%
Bengt Jonsson210.37%11.32%
Arun Murthy100.18%11.32%
Geert Uytterhoeven70.12%11.32%
Paul Gortmaker70.12%11.32%
Grygorii Strashko50.09%11.32%
Mian Yousaf Kaukab50.09%11.32%
Sundar R Iyer50.09%22.63%
Thomas Gleixner40.07%11.32%
Krzysztof Kozlowski10.02%11.32%
Dariusz Szymczak10.02%11.32%
Total5613100.00%76100.00%
Directory: drivers/mfd
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