diff options
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/mfd/ab8500-core.c | 281 |
2 files changed, 168 insertions, 117 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 8a463e6c22a..ec0af47a905 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -434,7 +434,7 @@ config PCF50633_GPIO config ABX500_CORE bool "ST-Ericsson ABX500 Mixed Signal Circuit register functions" - default y if ARCH_U300 + default y if ARCH_U300 || ARCH_U8500 help Say yes here if you have the ABX500 Mixed Signal IC family chips. This core driver expose register access functions. @@ -475,7 +475,7 @@ config EZX_PCAP config AB8500_CORE bool "ST-Ericsson AB8500 Mixed Signal Power Management chip" - depends on SPI=y && GENERIC_HARDIRQS + depends on SPI=y && GENERIC_HARDIRQS && ABX500_CORE select MFD_CORE help Select this option to enable access to AB8500 power management diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index b8c4b80e4c4..373783146b5 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -4,6 +4,7 @@ * License Terms: GNU General Public License v2 * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> * Author: Rabin Vincent <rabin.vincent@stericsson.com> + * Changes: Mattias Wallin <mattias.wallin@stericsson.com> */ #include <linux/kernel.h> @@ -15,6 +16,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/mfd/core.h> +#include <linux/mfd/abx500.h> #include <linux/mfd/ab8500.h> #include <linux/regulator/ab8500.h> @@ -22,71 +24,71 @@ * Interrupt register offsets * Bank : 0x0E */ -#define AB8500_IT_SOURCE1_REG 0x0E00 -#define AB8500_IT_SOURCE2_REG 0x0E01 -#define AB8500_IT_SOURCE3_REG 0x0E02 -#define AB8500_IT_SOURCE4_REG 0x0E03 -#define AB8500_IT_SOURCE5_REG 0x0E04 -#define AB8500_IT_SOURCE6_REG 0x0E05 -#define AB8500_IT_SOURCE7_REG 0x0E06 -#define AB8500_IT_SOURCE8_REG 0x0E07 -#define AB8500_IT_SOURCE19_REG 0x0E12 -#define AB8500_IT_SOURCE20_REG 0x0E13 -#define AB8500_IT_SOURCE21_REG 0x0E14 -#define AB8500_IT_SOURCE22_REG 0x0E15 -#define AB8500_IT_SOURCE23_REG 0x0E16 -#define AB8500_IT_SOURCE24_REG 0x0E17 +#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 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 0x0E20 -#define AB8500_IT_LATCH2_REG 0x0E21 -#define AB8500_IT_LATCH3_REG 0x0E22 -#define AB8500_IT_LATCH4_REG 0x0E23 -#define AB8500_IT_LATCH5_REG 0x0E24 -#define AB8500_IT_LATCH6_REG 0x0E25 -#define AB8500_IT_LATCH7_REG 0x0E26 -#define AB8500_IT_LATCH8_REG 0x0E27 -#define AB8500_IT_LATCH9_REG 0x0E28 -#define AB8500_IT_LATCH10_REG 0x0E29 -#define AB8500_IT_LATCH19_REG 0x0E32 -#define AB8500_IT_LATCH20_REG 0x0E33 -#define AB8500_IT_LATCH21_REG 0x0E34 -#define AB8500_IT_LATCH22_REG 0x0E35 -#define AB8500_IT_LATCH23_REG 0x0E36 -#define AB8500_IT_LATCH24_REG 0x0E37 +#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_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 0x0E40 -#define AB8500_IT_MASK2_REG 0x0E41 -#define AB8500_IT_MASK3_REG 0x0E42 -#define AB8500_IT_MASK4_REG 0x0E43 -#define AB8500_IT_MASK5_REG 0x0E44 -#define AB8500_IT_MASK6_REG 0x0E45 -#define AB8500_IT_MASK7_REG 0x0E46 -#define AB8500_IT_MASK8_REG 0x0E47 -#define AB8500_IT_MASK9_REG 0x0E48 -#define AB8500_IT_MASK10_REG 0x0E49 -#define AB8500_IT_MASK11_REG 0x0E4A -#define AB8500_IT_MASK12_REG 0x0E4B -#define AB8500_IT_MASK13_REG 0x0E4C -#define AB8500_IT_MASK14_REG 0x0E4D -#define AB8500_IT_MASK15_REG 0x0E4E -#define AB8500_IT_MASK16_REG 0x0E4F -#define AB8500_IT_MASK17_REG 0x0E50 -#define AB8500_IT_MASK18_REG 0x0E51 -#define AB8500_IT_MASK19_REG 0x0E52 -#define AB8500_IT_MASK20_REG 0x0E53 -#define AB8500_IT_MASK21_REG 0x0E54 -#define AB8500_IT_MASK22_REG 0x0E55 -#define AB8500_IT_MASK23_REG 0x0E56 -#define AB8500_IT_MASK24_REG 0x0E57 - -#define AB8500_REV_REG 0x1080 +#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_REV_REG 0x80 /* * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt @@ -99,96 +101,132 @@ static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { 0, 1, 2, 3, 4, 6, 7, 8, 9, 18, 19, 20, 21, }; -static int __ab8500_write(struct ab8500 *ab8500, u16 addr, u8 data) +static int ab8500_get_chip_id(struct device *dev) +{ + struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); + return (int)ab8500->chip_id; +} + +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); + ret = mutex_lock_interruptible(&ab8500->lock); + if (ret) + return ret; + 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; } -/** - * ab8500_write() - write an AB8500 register - * @ab8500: device to write to - * @addr: address of the register - * @data: value to write - */ -int ab8500_write(struct ab8500 *ab8500, u16 addr, u8 data) +static int ab8500_set_register(struct device *dev, u8 bank, + u8 reg, u8 value) { - int ret; - - mutex_lock(&ab8500->lock); - ret = __ab8500_write(ab8500, addr, data); - mutex_unlock(&ab8500->lock); + struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); - return ret; + return set_register_interruptible(ab8500, bank, reg, value); } -EXPORT_SYMBOL_GPL(ab8500_write); -static int __ab8500_read(struct ab8500 *ab8500, u16 addr) +static int get_register_interruptible(struct ab8500 *ab8500, u8 bank, + u8 reg, u8 *value) { int ret; + /* put the u8 bank and u8 reg together into a an u16. + * bank on higher 8 bits and reg in lower */ + u16 addr = ((u16)bank) << 8 | reg; + + ret = mutex_lock_interruptible(&ab8500->lock); + if (ret) + return ret; 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; } -/** - * ab8500_read() - read an AB8500 register - * @ab8500: device to read from - * @addr: address of the register - */ -int ab8500_read(struct ab8500 *ab8500, u16 addr) +static int ab8500_get_register(struct device *dev, u8 bank, + u8 reg, u8 *value) { - int ret; - - mutex_lock(&ab8500->lock); - ret = __ab8500_read(ab8500, addr); - mutex_unlock(&ab8500->lock); + struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); - return ret; + return get_register_interruptible(ab8500, bank, reg, value); } -EXPORT_SYMBOL_GPL(ab8500_read); - -/** - * ab8500_set_bits() - set a bitfield in an AB8500 register - * @ab8500: device to read from - * @addr: address of the register - * @mask: mask of the bitfield to modify - * @data: value to set to the bitfield - */ -int ab8500_set_bits(struct ab8500 *ab8500, u16 addr, u8 mask, u8 data) + +static int mask_and_set_register_interruptible(struct ab8500 *ab8500, u8 bank, + u8 reg, u8 bitmask, u8 bitvalues) { int ret; + u8 data; + /* put the u8 bank and u8 reg together into a an u16. + * bank on higher 8 bits and reg in lower */ + u16 addr = ((u16)bank) << 8 | reg; - mutex_lock(&ab8500->lock); + ret = mutex_lock_interruptible(&ab8500->lock); + if (ret) + return ret; - ret = __ab8500_read(ab8500, addr); - if (ret < 0) + ret = ab8500->read(ab8500, addr); + if (ret < 0) { + dev_err(ab8500->dev, "failed to read reg %#x: %d\n", + addr, ret); goto out; + } - ret &= ~mask; - ret |= data; + data = (u8)ret; + data = (~bitmask & data) | (bitmask & bitvalues); - ret = __ab8500_write(ab8500, addr, ret); + 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); out: mutex_unlock(&ab8500->lock); return ret; } -EXPORT_SYMBOL_GPL(ab8500_set_bits); + +static int ab8500_mask_and_set_register(struct device *dev, + u8 bank, u8 reg, u8 bitmask, u8 bitvalues) +{ + struct ab8500 *ab8500 = dev_get_drvdata(dev->parent); + + return mask_and_set_register_interruptible(ab8500, bank, reg, + bitmask, bitvalues); + +} + +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, +}; static void ab8500_irq_lock(unsigned int irq) { @@ -213,7 +251,7 @@ static void ab8500_irq_sync_unlock(unsigned int irq) ab8500->oldmask[i] = new; reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i]; - ab8500_write(ab8500, reg, new); + set_register_interruptible(ab8500, AB8500_INTERRUPT, reg, new); } mutex_unlock(&ab8500->irq_lock); @@ -257,9 +295,11 @@ static irqreturn_t ab8500_irq(int irq, void *dev) for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { int regoffset = ab8500_irq_regoffset[i]; int status; + u8 value; - status = ab8500_read(ab8500, AB8500_IT_LATCH1_REG + regoffset); - if (status <= 0) + status = get_register_interruptible(ab8500, AB8500_INTERRUPT, + AB8500_IT_LATCH1_REG + regoffset, &value); + if (status < 0 || value == 0) continue; do { @@ -267,8 +307,8 @@ static irqreturn_t ab8500_irq(int irq, void *dev) int line = i * 8 + bit; handle_nested_irq(ab8500->irq_base + line); - status &= ~(1 << bit); - } while (status); + value &= ~(1 << bit); + } while (value); } return IRQ_HANDLED; @@ -381,6 +421,7 @@ int __devinit ab8500_init(struct ab8500 *ab8500) struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev); int ret; int i; + u8 value; if (plat) ab8500->irq_base = plat->irq_base; @@ -388,7 +429,8 @@ int __devinit ab8500_init(struct ab8500 *ab8500) mutex_init(&ab8500->lock); mutex_init(&ab8500->irq_lock); - ret = ab8500_read(ab8500, AB8500_REV_REG); + ret = get_register_interruptible(ab8500, AB8500_MISC, + AB8500_REV_REG, &value); if (ret < 0) return ret; @@ -397,28 +439,37 @@ int __devinit ab8500_init(struct ab8500 *ab8500) * 0x10 - Cut 1.0 * 0x11 - Cut 1.1 */ - if (ret == 0x0 || ret == 0x10 || ret == 0x11) { - ab8500->revision = ret; - dev_info(ab8500->dev, "detected chip, revision: %#x\n", ret); + if (value == 0x0 || value == 0x10 || value == 0x11) { + ab8500->revision = value; + dev_info(ab8500->dev, "detected chip, revision: %#x\n", value); } else { - dev_err(ab8500->dev, "unknown chip, revision: %#x\n", ret); + dev_err(ab8500->dev, "unknown chip, revision: %#x\n", value); return -EINVAL; } + ab8500->chip_id = value; if (plat && plat->init) plat->init(ab8500); /* Clear and mask all interrupts */ for (i = 0; i < 10; i++) { - ab8500_read(ab8500, AB8500_IT_LATCH1_REG + i); - ab8500_write(ab8500, AB8500_IT_MASK1_REG + i, 0xff); + get_register_interruptible(ab8500, AB8500_INTERRUPT, + AB8500_IT_LATCH1_REG + i, &value); + set_register_interruptible(ab8500, AB8500_INTERRUPT, + AB8500_IT_MASK1_REG + i, 0xff); } for (i = 18; i < 24; i++) { - ab8500_read(ab8500, AB8500_IT_LATCH1_REG + i); - ab8500_write(ab8500, AB8500_IT_MASK1_REG + i, 0xff); + get_register_interruptible(ab8500, AB8500_INTERRUPT, + AB8500_IT_LATCH1_REG + i, &value); + set_register_interruptible(ab8500, AB8500_INTERRUPT, + AB8500_IT_MASK1_REG + i, 0xff); } + ret = abx500_register_ops(ab8500->dev, &ab8500_ops); + if (ret) + return ret; + for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) ab8500->mask[i] = ab8500->oldmask[i] = 0xff; |