forked from luck/tmp_suning_uos_patched
mfd: add ezx_pcap_setbits
Provides an atomic set_bits functions, as needed by the pcap-regulator driver. Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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@ -107,6 +107,29 @@ int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value)
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}
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}
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EXPORT_SYMBOL_GPL(ezx_pcap_read);
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EXPORT_SYMBOL_GPL(ezx_pcap_read);
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int ezx_pcap_set_bits(struct pcap_chip *pcap, u8 reg_num, u32 mask, u32 val)
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{
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int ret;
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u32 tmp = PCAP_REGISTER_READ_OP_BIT |
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(reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
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mutex_lock(&pcap->io_mutex);
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ret = ezx_pcap_putget(pcap, &tmp);
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if (ret)
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goto out_unlock;
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tmp &= (PCAP_REGISTER_VALUE_MASK & ~mask);
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tmp |= (val & mask) | PCAP_REGISTER_WRITE_OP_BIT |
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(reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
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ret = ezx_pcap_putget(pcap, &tmp);
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out_unlock:
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mutex_unlock(&pcap->io_mutex);
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return ret;
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}
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EXPORT_SYMBOL_GPL(ezx_pcap_set_bits);
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/* IRQ */
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/* IRQ */
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int irq_to_pcap(struct pcap_chip *pcap, int irq)
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int irq_to_pcap(struct pcap_chip *pcap, int irq)
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{
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{
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@ -25,6 +25,7 @@ struct pcap_chip;
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int ezx_pcap_write(struct pcap_chip *, u8, u32);
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int ezx_pcap_write(struct pcap_chip *, u8, u32);
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int ezx_pcap_read(struct pcap_chip *, u8, u32 *);
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int ezx_pcap_read(struct pcap_chip *, u8, u32 *);
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int ezx_pcap_set_bits(struct pcap_chip *, u8, u32, u32);
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int pcap_to_irq(struct pcap_chip *, int);
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int pcap_to_irq(struct pcap_chip *, int);
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int irq_to_pcap(struct pcap_chip *, int);
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int irq_to_pcap(struct pcap_chip *, int);
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int pcap_adc_async(struct pcap_chip *, u8, u32, u8[], void *, void *);
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int pcap_adc_async(struct pcap_chip *, u8, u32, u8[], void *, void *);
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