diff options
Diffstat (limited to 'drivers/mfd/mc13xxx-core.c')
| -rw-r--r-- | drivers/mfd/mc13xxx-core.c | 310 |
1 files changed, 41 insertions, 269 deletions
diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c index acf5dd712eb2..2b6bc868cd3d 100644 --- a/drivers/mfd/mc13xxx-core.c +++ b/drivers/mfd/mc13xxx-core.c @@ -10,106 +10,18 @@ * Free Software Foundation. */ -#include <linux/slab.h> #include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/mutex.h> -#include <linux/interrupt.h> -#include <linux/mfd/core.h> -#include <linux/mfd/mc13xxx.h> #include <linux/of.h> #include <linux/of_device.h> -#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/mfd/core.h> #include "mc13xxx.h" #define MC13XXX_IRQSTAT0 0 -#define MC13XXX_IRQSTAT0_ADCDONEI (1 << 0) -#define MC13XXX_IRQSTAT0_ADCBISDONEI (1 << 1) -#define MC13XXX_IRQSTAT0_TSI (1 << 2) -#define MC13783_IRQSTAT0_WHIGHI (1 << 3) -#define MC13783_IRQSTAT0_WLOWI (1 << 4) -#define MC13XXX_IRQSTAT0_CHGDETI (1 << 6) -#define MC13783_IRQSTAT0_CHGOVI (1 << 7) -#define MC13XXX_IRQSTAT0_CHGREVI (1 << 8) -#define MC13XXX_IRQSTAT0_CHGSHORTI (1 << 9) -#define MC13XXX_IRQSTAT0_CCCVI (1 << 10) -#define MC13XXX_IRQSTAT0_CHGCURRI (1 << 11) -#define MC13XXX_IRQSTAT0_BPONI (1 << 12) -#define MC13XXX_IRQSTAT0_LOBATLI (1 << 13) -#define MC13XXX_IRQSTAT0_LOBATHI (1 << 14) -#define MC13783_IRQSTAT0_UDPI (1 << 15) -#define MC13783_IRQSTAT0_USBI (1 << 16) -#define MC13783_IRQSTAT0_IDI (1 << 19) -#define MC13783_IRQSTAT0_SE1I (1 << 21) -#define MC13783_IRQSTAT0_CKDETI (1 << 22) -#define MC13783_IRQSTAT0_UDMI (1 << 23) - #define MC13XXX_IRQMASK0 1 -#define MC13XXX_IRQMASK0_ADCDONEM MC13XXX_IRQSTAT0_ADCDONEI -#define MC13XXX_IRQMASK0_ADCBISDONEM MC13XXX_IRQSTAT0_ADCBISDONEI -#define MC13XXX_IRQMASK0_TSM MC13XXX_IRQSTAT0_TSI -#define MC13783_IRQMASK0_WHIGHM MC13783_IRQSTAT0_WHIGHI -#define MC13783_IRQMASK0_WLOWM MC13783_IRQSTAT0_WLOWI -#define MC13XXX_IRQMASK0_CHGDETM MC13XXX_IRQSTAT0_CHGDETI -#define MC13783_IRQMASK0_CHGOVM MC13783_IRQSTAT0_CHGOVI -#define MC13XXX_IRQMASK0_CHGREVM MC13XXX_IRQSTAT0_CHGREVI -#define MC13XXX_IRQMASK0_CHGSHORTM MC13XXX_IRQSTAT0_CHGSHORTI -#define MC13XXX_IRQMASK0_CCCVM MC13XXX_IRQSTAT0_CCCVI -#define MC13XXX_IRQMASK0_CHGCURRM MC13XXX_IRQSTAT0_CHGCURRI -#define MC13XXX_IRQMASK0_BPONM MC13XXX_IRQSTAT0_BPONI -#define MC13XXX_IRQMASK0_LOBATLM MC13XXX_IRQSTAT0_LOBATLI -#define MC13XXX_IRQMASK0_LOBATHM MC13XXX_IRQSTAT0_LOBATHI -#define MC13783_IRQMASK0_UDPM MC13783_IRQSTAT0_UDPI -#define MC13783_IRQMASK0_USBM MC13783_IRQSTAT0_USBI -#define MC13783_IRQMASK0_IDM MC13783_IRQSTAT0_IDI -#define MC13783_IRQMASK0_SE1M MC13783_IRQSTAT0_SE1I -#define MC13783_IRQMASK0_CKDETM MC13783_IRQSTAT0_CKDETI -#define MC13783_IRQMASK0_UDMM MC13783_IRQSTAT0_UDMI - #define MC13XXX_IRQSTAT1 3 -#define MC13XXX_IRQSTAT1_1HZI (1 << 0) -#define MC13XXX_IRQSTAT1_TODAI (1 << 1) -#define MC13783_IRQSTAT1_ONOFD1I (1 << 3) -#define MC13783_IRQSTAT1_ONOFD2I (1 << 4) -#define MC13783_IRQSTAT1_ONOFD3I (1 << 5) -#define MC13XXX_IRQSTAT1_SYSRSTI (1 << 6) -#define MC13XXX_IRQSTAT1_RTCRSTI (1 << 7) -#define MC13XXX_IRQSTAT1_PCI (1 << 8) -#define MC13XXX_IRQSTAT1_WARMI (1 << 9) -#define MC13XXX_IRQSTAT1_MEMHLDI (1 << 10) -#define MC13783_IRQSTAT1_PWRRDYI (1 << 11) -#define MC13XXX_IRQSTAT1_THWARNLI (1 << 12) -#define MC13XXX_IRQSTAT1_THWARNHI (1 << 13) -#define MC13XXX_IRQSTAT1_CLKI (1 << 14) -#define MC13783_IRQSTAT1_SEMAFI (1 << 15) -#define MC13783_IRQSTAT1_MC2BI (1 << 17) -#define MC13783_IRQSTAT1_HSDETI (1 << 18) -#define MC13783_IRQSTAT1_HSLI (1 << 19) -#define MC13783_IRQSTAT1_ALSPTHI (1 << 20) -#define MC13783_IRQSTAT1_AHSSHORTI (1 << 21) - #define MC13XXX_IRQMASK1 4 -#define MC13XXX_IRQMASK1_1HZM MC13XXX_IRQSTAT1_1HZI -#define MC13XXX_IRQMASK1_TODAM MC13XXX_IRQSTAT1_TODAI -#define MC13783_IRQMASK1_ONOFD1M MC13783_IRQSTAT1_ONOFD1I -#define MC13783_IRQMASK1_ONOFD2M MC13783_IRQSTAT1_ONOFD2I -#define MC13783_IRQMASK1_ONOFD3M MC13783_IRQSTAT1_ONOFD3I -#define MC13XXX_IRQMASK1_SYSRSTM MC13XXX_IRQSTAT1_SYSRSTI -#define MC13XXX_IRQMASK1_RTCRSTM MC13XXX_IRQSTAT1_RTCRSTI -#define MC13XXX_IRQMASK1_PCM MC13XXX_IRQSTAT1_PCI -#define MC13XXX_IRQMASK1_WARMM MC13XXX_IRQSTAT1_WARMI -#define MC13XXX_IRQMASK1_MEMHLDM MC13XXX_IRQSTAT1_MEMHLDI -#define MC13783_IRQMASK1_PWRRDYM MC13783_IRQSTAT1_PWRRDYI -#define MC13XXX_IRQMASK1_THWARNLM MC13XXX_IRQSTAT1_THWARNLI -#define MC13XXX_IRQMASK1_THWARNHM MC13XXX_IRQSTAT1_THWARNHI -#define MC13XXX_IRQMASK1_CLKM MC13XXX_IRQSTAT1_CLKI -#define MC13783_IRQMASK1_SEMAFM MC13783_IRQSTAT1_SEMAFI -#define MC13783_IRQMASK1_MC2BM MC13783_IRQSTAT1_MC2BI -#define MC13783_IRQMASK1_HSDETM MC13783_IRQSTAT1_HSDETI -#define MC13783_IRQMASK1_HSLM MC13783_IRQSTAT1_HSLI -#define MC13783_IRQMASK1_ALSPTHM MC13783_IRQSTAT1_ALSPTHI -#define MC13783_IRQMASK1_AHSSHORTM MC13783_IRQSTAT1_AHSSHORTI #define MC13XXX_REVISION 7 #define MC13XXX_REVISION_REVMETAL (0x07 << 0) @@ -189,45 +101,21 @@ EXPORT_SYMBOL(mc13xxx_reg_rmw); int mc13xxx_irq_mask(struct mc13xxx *mc13xxx, int irq) { - int ret; - unsigned int offmask = irq < 24 ? MC13XXX_IRQMASK0 : MC13XXX_IRQMASK1; - u32 irqbit = 1 << (irq < 24 ? irq : irq - 24); - u32 mask; - - if (irq < 0 || irq >= MC13XXX_NUM_IRQ) - return -EINVAL; - - ret = mc13xxx_reg_read(mc13xxx, offmask, &mask); - if (ret) - return ret; + int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq); - if (mask & irqbit) - /* already masked */ - return 0; + disable_irq_nosync(virq); - return mc13xxx_reg_write(mc13xxx, offmask, mask | irqbit); + return 0; } EXPORT_SYMBOL(mc13xxx_irq_mask); int mc13xxx_irq_unmask(struct mc13xxx *mc13xxx, int irq) { - int ret; - unsigned int offmask = irq < 24 ? MC13XXX_IRQMASK0 : MC13XXX_IRQMASK1; - u32 irqbit = 1 << (irq < 24 ? irq : irq - 24); - u32 mask; - - if (irq < 0 || irq >= MC13XXX_NUM_IRQ) - return -EINVAL; + int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq); - ret = mc13xxx_reg_read(mc13xxx, offmask, &mask); - if (ret) - return ret; + enable_irq(virq); - if (!(mask & irqbit)) - /* already unmasked */ - return 0; - - return mc13xxx_reg_write(mc13xxx, offmask, mask & ~irqbit); + return 0; } EXPORT_SYMBOL(mc13xxx_irq_unmask); @@ -239,7 +127,7 @@ int mc13xxx_irq_status(struct mc13xxx *mc13xxx, int irq, unsigned int offstat = irq < 24 ? MC13XXX_IRQSTAT0 : MC13XXX_IRQSTAT1; u32 irqbit = 1 << (irq < 24 ? irq : irq - 24); - if (irq < 0 || irq >= MC13XXX_NUM_IRQ) + if (irq < 0 || irq >= ARRAY_SIZE(mc13xxx->irqs)) return -EINVAL; if (enabled) { @@ -266,147 +154,26 @@ int mc13xxx_irq_status(struct mc13xxx *mc13xxx, int irq, } EXPORT_SYMBOL(mc13xxx_irq_status); -int mc13xxx_irq_ack(struct mc13xxx *mc13xxx, int irq) -{ - unsigned int offstat = irq < 24 ? MC13XXX_IRQSTAT0 : MC13XXX_IRQSTAT1; - unsigned int val = 1 << (irq < 24 ? irq : irq - 24); - - BUG_ON(irq < 0 || irq >= MC13XXX_NUM_IRQ); - - return mc13xxx_reg_write(mc13xxx, offstat, val); -} -EXPORT_SYMBOL(mc13xxx_irq_ack); - -int mc13xxx_irq_request_nounmask(struct mc13xxx *mc13xxx, int irq, - irq_handler_t handler, const char *name, void *dev) -{ - BUG_ON(!mutex_is_locked(&mc13xxx->lock)); - BUG_ON(!handler); - - if (irq < 0 || irq >= MC13XXX_NUM_IRQ) - return -EINVAL; - - if (mc13xxx->irqhandler[irq]) - return -EBUSY; - - mc13xxx->irqhandler[irq] = handler; - mc13xxx->irqdata[irq] = dev; - - return 0; -} -EXPORT_SYMBOL(mc13xxx_irq_request_nounmask); - int mc13xxx_irq_request(struct mc13xxx *mc13xxx, int irq, irq_handler_t handler, const char *name, void *dev) { - int ret; + int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq); - ret = mc13xxx_irq_request_nounmask(mc13xxx, irq, handler, name, dev); - if (ret) - return ret; - - ret = mc13xxx_irq_unmask(mc13xxx, irq); - if (ret) { - mc13xxx->irqhandler[irq] = NULL; - mc13xxx->irqdata[irq] = NULL; - return ret; - } - - return 0; + return devm_request_threaded_irq(mc13xxx->dev, virq, NULL, handler, + 0, name, dev); } EXPORT_SYMBOL(mc13xxx_irq_request); int mc13xxx_irq_free(struct mc13xxx *mc13xxx, int irq, void *dev) { - int ret; - BUG_ON(!mutex_is_locked(&mc13xxx->lock)); + int virq = regmap_irq_get_virq(mc13xxx->irq_data, irq); - if (irq < 0 || irq >= MC13XXX_NUM_IRQ || !mc13xxx->irqhandler[irq] || - mc13xxx->irqdata[irq] != dev) - return -EINVAL; - - ret = mc13xxx_irq_mask(mc13xxx, irq); - if (ret) - return ret; - - mc13xxx->irqhandler[irq] = NULL; - mc13xxx->irqdata[irq] = NULL; + devm_free_irq(mc13xxx->dev, virq, dev); return 0; } EXPORT_SYMBOL(mc13xxx_irq_free); -static inline irqreturn_t mc13xxx_irqhandler(struct mc13xxx *mc13xxx, int irq) -{ - return mc13xxx->irqhandler[irq](irq, mc13xxx->irqdata[irq]); -} - -/* - * returns: number of handled irqs or negative error - * locking: holds mc13xxx->lock - */ -static int mc13xxx_irq_handle(struct mc13xxx *mc13xxx, - unsigned int offstat, unsigned int offmask, int baseirq) -{ - u32 stat, mask; - int ret = mc13xxx_reg_read(mc13xxx, offstat, &stat); - int num_handled = 0; - - if (ret) - return ret; - - ret = mc13xxx_reg_read(mc13xxx, offmask, &mask); - if (ret) - return ret; - - while (stat & ~mask) { - int irq = __ffs(stat & ~mask); - - stat &= ~(1 << irq); - - if (likely(mc13xxx->irqhandler[baseirq + irq])) { - irqreturn_t handled; - - handled = mc13xxx_irqhandler(mc13xxx, baseirq + irq); - if (handled == IRQ_HANDLED) - num_handled++; - } else { - dev_err(mc13xxx->dev, - "BUG: irq %u but no handler\n", - baseirq + irq); - - mask |= 1 << irq; - - ret = mc13xxx_reg_write(mc13xxx, offmask, mask); - } - } - - return num_handled; -} - -static irqreturn_t mc13xxx_irq_thread(int irq, void *data) -{ - struct mc13xxx *mc13xxx = data; - irqreturn_t ret; - int handled = 0; - - mc13xxx_lock(mc13xxx); - - ret = mc13xxx_irq_handle(mc13xxx, MC13XXX_IRQSTAT0, - MC13XXX_IRQMASK0, 0); - if (ret > 0) - handled = 1; - - ret = mc13xxx_irq_handle(mc13xxx, MC13XXX_IRQSTAT1, - MC13XXX_IRQMASK1, 24); - if (ret > 0) - handled = 1; - - mc13xxx_unlock(mc13xxx); - - return IRQ_RETVAL(handled); -} - #define maskval(reg, mask) (((reg) & (mask)) >> __ffs(mask)) static void mc13xxx_print_revision(struct mc13xxx *mc13xxx, u32 revision) { @@ -475,8 +242,6 @@ static irqreturn_t mc13xxx_handler_adcdone(int irq, void *data) { struct mc13xxx_adcdone_data *adcdone_data = data; - mc13xxx_irq_ack(adcdone_data->mc13xxx, irq); - complete_all(&adcdone_data->done); return IRQ_HANDLED; @@ -544,7 +309,6 @@ int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode, dev_dbg(mc13xxx->dev, "%s: request irq\n", __func__); mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_ADCDONE, mc13xxx_handler_adcdone, __func__, &adcdone_data); - mc13xxx_irq_ack(mc13xxx, MC13XXX_IRQ_ADCDONE); mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, adc0); mc13xxx_reg_write(mc13xxx, MC13XXX_ADC1, adc1); @@ -599,7 +363,8 @@ static int mc13xxx_add_subdevice_pdata(struct mc13xxx *mc13xxx, if (!cell.name) return -ENOMEM; - return mfd_add_devices(mc13xxx->dev, -1, &cell, 1, NULL, 0, NULL); + return mfd_add_devices(mc13xxx->dev, -1, &cell, 1, NULL, 0, + regmap_irq_get_domain(mc13xxx->irq_data)); } static int mc13xxx_add_subdevice(struct mc13xxx *mc13xxx, const char *format) @@ -640,8 +405,8 @@ int mc13xxx_common_init(struct device *dev) { struct mc13xxx_platform_data *pdata = dev_get_platdata(dev); struct mc13xxx *mc13xxx = dev_get_drvdata(dev); - int ret; u32 revision; + int i, ret; mc13xxx->dev = dev; @@ -651,31 +416,32 @@ int mc13xxx_common_init(struct device *dev) mc13xxx->variant->print_revision(mc13xxx, revision); - /* mask all irqs */ - ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK0, 0x00ffffff); - if (ret) - return ret; + for (i = 0; i < ARRAY_SIZE(mc13xxx->irqs); i++) { + mc13xxx->irqs[i].reg_offset = i / MC13XXX_IRQ_PER_REG; + mc13xxx->irqs[i].mask = BIT(i % MC13XXX_IRQ_PER_REG); + } - ret = mc13xxx_reg_write(mc13xxx, MC13XXX_IRQMASK1, 0x00ffffff); + mc13xxx->irq_chip.name = dev_name(dev); + mc13xxx->irq_chip.status_base = MC13XXX_IRQSTAT0; + mc13xxx->irq_chip.mask_base = MC13XXX_IRQMASK0; + mc13xxx->irq_chip.ack_base = MC13XXX_IRQSTAT0; + mc13xxx->irq_chip.irq_reg_stride = MC13XXX_IRQSTAT1 - MC13XXX_IRQSTAT0; + mc13xxx->irq_chip.init_ack_masked = true; + mc13xxx->irq_chip.use_ack = true; + mc13xxx->irq_chip.num_regs = MC13XXX_IRQ_REG_CNT; + mc13xxx->irq_chip.irqs = mc13xxx->irqs; + mc13xxx->irq_chip.num_irqs = ARRAY_SIZE(mc13xxx->irqs); + + ret = regmap_add_irq_chip(mc13xxx->regmap, mc13xxx->irq, IRQF_ONESHOT, + 0, &mc13xxx->irq_chip, &mc13xxx->irq_data); if (ret) return ret; mutex_init(&mc13xxx->lock); - ret = request_threaded_irq(mc13xxx->irq, NULL, mc13xxx_irq_thread, - IRQF_ONESHOT | IRQF_TRIGGER_HIGH, "mc13xxx", mc13xxx); - if (ret) - return ret; - if (mc13xxx_probe_flags_dt(mc13xxx) < 0 && pdata) mc13xxx->flags = pdata->flags; - if (mc13xxx->flags & MC13XXX_USE_ADC) - mc13xxx_add_subdevice(mc13xxx, "%s-adc"); - - if (mc13xxx->flags & MC13XXX_USE_RTC) - mc13xxx_add_subdevice(mc13xxx, "%s-rtc"); - if (pdata) { mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator", &pdata->regulators, sizeof(pdata->regulators)); @@ -699,6 +465,12 @@ int mc13xxx_common_init(struct device *dev) mc13xxx_add_subdevice(mc13xxx, "%s-ts"); } + if (mc13xxx->flags & MC13XXX_USE_ADC) + mc13xxx_add_subdevice(mc13xxx, "%s-adc"); + + if (mc13xxx->flags & MC13XXX_USE_RTC) + mc13xxx_add_subdevice(mc13xxx, "%s-rtc"); + return 0; } EXPORT_SYMBOL_GPL(mc13xxx_common_init); @@ -707,8 +479,8 @@ int mc13xxx_common_exit(struct device *dev) { struct mc13xxx *mc13xxx = dev_get_drvdata(dev); - free_irq(mc13xxx->irq, mc13xxx); mfd_remove_devices(dev); + regmap_del_irq_chip(mc13xxx->irq, mc13xxx->irq_data); mutex_destroy(&mc13xxx->lock); return 0; |