From 5557b3223d35dd25366d6ef047299b1dc94b17e6 Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Thu, 20 Nov 2008 19:46:51 +0000 Subject: pcf50633_mfd.patch pcf50633 driver rewritten to use the MFD model. --- drivers/mfd/Kconfig | 16 ++ drivers/mfd/Makefile | 7 +- drivers/mfd/pcf50633-adc.c | 218 ++++++++++++++++ drivers/mfd/pcf50633-core.c | 607 ++++++++++++++++++++++++++++++++++++++++++++ drivers/mfd/pcf50633-gpio.c | 62 +++++ drivers/mfd/pcf50633-i2c.c | 3 + drivers/mfd/pcf50633-mbc.c | 292 +++++++++++++++++++++ 7 files changed, 1204 insertions(+), 1 deletion(-) create mode 100644 drivers/mfd/pcf50633-adc.c create mode 100644 drivers/mfd/pcf50633-core.c create mode 100644 drivers/mfd/pcf50633-gpio.c create mode 100644 drivers/mfd/pcf50633-i2c.c create mode 100644 drivers/mfd/pcf50633-mbc.c (limited to 'drivers/mfd') diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 10e5b2cbb13..84920f60757 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -153,6 +153,22 @@ config MFD_WM8350_I2C I2C as the control interface. Additional options must be selected to enable support for the functionality of the chip. +config MFD_PCF50633 + tristate "Support for NXP PCF50633" + depends on I2C + +config MFD_PCF50633_ADC + tristate "Support for NXP PCF50633 ADC" + depends on MFD_PCF50633 + +config MFD_PCF50633_MBC + tristate "Support for NXP PCF50633 MBC" + depends on MFD_PCF50633 + +config MFD_PCF50633_GPIO + tristate "Support for NXP PCF50633 GPIO" + depends on MFD_PCF50633 + source "drivers/mfd/glamo/Kconfig" endmenu diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b917368fbda..30f1091072b 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -32,4 +32,9 @@ obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o endif obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o -obj-$(CONFIG_PMIC_DA903X) += da903x.o \ No newline at end of file +obj-$(CONFIG_PMIC_DA903X) += da903x.o + +obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o +obj-$(CONFIG_MFD_PCF50633_ADC) += pcf50633-adc.o +obj-$(CONFIG_MFD_PCF50633_MBC) += pcf50633-mbc.o +obj-$(CONFIG_MFD_PCF50633_GPIO) += pcf50633-gpio.o diff --git a/drivers/mfd/pcf50633-adc.c b/drivers/mfd/pcf50633-adc.c new file mode 100644 index 00000000000..208c1f87e5d --- /dev/null +++ b/drivers/mfd/pcf50633-adc.c @@ -0,0 +1,218 @@ +#include +#include + +struct pcf50633_adc_request { + int mux; + int avg; + int result; + void (*callback)(struct pcf50633 *, void *, int); + void *callback_param; + + /* Used in case of sync requests */ + struct completion completion; + +}; + +static void adc_read_setup(struct pcf50633 *pcf, + int channel, int avg) +{ + channel &= PCF50633_ADCC1_ADCMUX_MASK; + + /* kill ratiometric, but enable ACCSW biasing */ + pcf50633_reg_write(pcf, PCF50633_REG_ADCC2, 0x00); + pcf50633_reg_write(pcf, PCF50633_REG_ADCC3, 0x01); + + /* start ADC conversion of selected channel */ + pcf50633_reg_write(pcf, PCF50633_REG_ADCC1, channel | avg | + PCF50633_ADCC1_ADCSTART | PCF50633_ADCC1_RES_10BIT); + +} + +static void trigger_next_adc_job_if_any(struct pcf50633 *pcf) +{ + int head, tail; + + mutex_lock(&pcf->adc.queue_mutex); + + head = pcf->adc.queue_head; + tail = pcf->adc.queue_tail; + + if (!pcf->adc.queue[head]) + goto out; + + adc_read_setup(pcf, pcf->adc.queue[head]->mux, + pcf->adc.queue[head]->avg); +out: + mutex_unlock(&pcf->adc.queue_mutex); +} + +static int +adc_enqueue_request(struct pcf50633 *pcf, struct pcf50633_adc_request *req) +{ + int head, tail; + + mutex_lock(&pcf->adc.queue_mutex); + head = pcf->adc.queue_head; + tail = pcf->adc.queue_tail; + + if (pcf->adc.queue[tail]) { + mutex_unlock(&pcf->adc.queue_mutex); + return -EBUSY; + } + + pcf->adc.queue[tail] = req; + + pcf->adc.queue_tail = + (tail + 1) & (PCF50633_MAX_ADC_FIFO_DEPTH - 1); + + mutex_unlock(&pcf->adc.queue_mutex); + + trigger_next_adc_job_if_any(pcf); + + return 0; +} + +static void +pcf50633_adc_sync_read_callback(struct pcf50633 *pcf, void *param, int result) +{ + struct pcf50633_adc_request *req; + + /*We know here that the passed param is an adc_request object */ + req = (struct pcf50633_adc_request *)param; + + req->result = result; + complete(&req->completion); +} + +int pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg) +{ + + struct pcf50633_adc_request *req; + int result; + + /* req is freed when the result is ready, in pcf50633_work*/ + req = kzalloc(sizeof(*req), GFP_KERNEL); + if (!req) + return -ENOMEM; + + req->mux = mux; + req->avg = avg; + req->callback = pcf50633_adc_sync_read_callback; + req->callback_param = req; + init_completion(&req->completion); + + adc_enqueue_request(pcf, req); + + wait_for_completion(&req->completion); + result = req->result; + + return result; +} +EXPORT_SYMBOL(pcf50633_adc_sync_read); + +int pcf50633_adc_async_read(struct pcf50633 *pcf, int mux, int avg, + void (*callback)(struct pcf50633 *, void *, int), + void *callback_param) +{ + struct pcf50633_adc_request *req; + + /* req is freed when the result is ready, in pcf50633_work*/ + req = kmalloc(sizeof(*req), GFP_KERNEL); + if (!req) + return -ENOMEM; + + req->mux = mux; + req->avg = avg; + req->callback = callback; + req->callback_param = callback_param; + + adc_enqueue_request(pcf, req); + + return 0; +} +EXPORT_SYMBOL(pcf50633_adc_async_read); + +static int adc_result(struct pcf50633 *pcf) +{ + u16 ret = (pcf50633_reg_read(pcf, PCF50633_REG_ADCS1) << 2) | + (pcf50633_reg_read(pcf, PCF50633_REG_ADCS3) & + PCF50633_ADCS3_ADCDAT1L_MASK); + dev_info(pcf->dev, "adc result = %d\n", ret); + + return ret; +} + +static void pcf50633_adc_irq(struct pcf50633 *pcf, int irq, void *unused) +{ + struct pcf50633_adc_request *req; + int head; + + mutex_lock(&pcf->adc.queue_mutex); + head = pcf->adc.queue_head; + + req = pcf->adc.queue[head]; + if (!req) { + dev_err(pcf->dev, "ADC queue empty\n"); + mutex_unlock(&pcf->adc.queue_mutex); + return; + } + pcf->adc.queue[head] = NULL; + pcf->adc.queue_head = (head + 1) & + (PCF50633_MAX_ADC_FIFO_DEPTH - 1); + + mutex_unlock(&pcf->adc.queue_mutex); + req->callback(pcf, req->callback_param, adc_result(pcf)); + + kfree(req); + + trigger_next_adc_job_if_any(pcf); +} + +int __init pcf50633_adc_probe(struct platform_device *pdev) +{ + struct pcf50633 *pcf; + + pcf = platform_get_drvdata(pdev); + + /* Set up IRQ handlers */ + pcf->irq_handler[PCF50633_IRQ_ADCRDY].handler = pcf50633_adc_irq; + + mutex_init(&pcf->adc.queue_mutex); + return 0; +} + +static int __devexit pcf50633_adc_remove(struct platform_device *pdev) +{ + struct pcf50633 *pcf; + + pcf = platform_get_drvdata(pdev); + pcf->irq_handler[PCF50633_IRQ_ADCRDY].handler = NULL; + + return 0; +} + +struct platform_driver pcf50633_adc_driver = { + .driver = { + .name = "pcf50633-adc", + }, + .probe = pcf50633_adc_probe, + .remove = __devexit_p(pcf50633_adc_remove), +}; + +static int __init pcf50633_adc_init(void) +{ + return platform_driver_register(&pcf50633_adc_driver); +} +module_init(pcf50633_adc_init); + +static void __exit pcf50633_adc_exit(void) +{ + platform_driver_unregister(&pcf50633_adc_driver); +} +module_exit(pcf50633_adc_exit); + +MODULE_AUTHOR("Balaji Rao "); +MODULE_DESCRIPTION("PCF50633 adc driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcf50633-adc"); + diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c new file mode 100644 index 00000000000..901375b4c20 --- /dev/null +++ b/drivers/mfd/pcf50633-core.c @@ -0,0 +1,607 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Read a block of upto 32 regs */ +int pcf50633_read_block(struct pcf50633 *pcf , u8 reg, + int nr_regs, u8 *data) +{ + int ret; + + mutex_lock(&pcf->lock); + ret = i2c_smbus_read_i2c_block_data(pcf->i2c_client, reg, + nr_regs, data); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL(pcf50633_read_block); + +/* Write a block of upto 32 regs */ +int pcf50633_write_block(struct pcf50633 *pcf , u8 reg, + int nr_regs, u8 *data) +{ + int ret; + + mutex_lock(&pcf->lock); + ret = i2c_smbus_write_i2c_block_data(pcf->i2c_client, reg, + nr_regs, data); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL(pcf50633_write_block); + +u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg) +{ + int ret; + + mutex_lock(&pcf->lock); + ret = i2c_smbus_read_byte_data(pcf->i2c_client, reg); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL(pcf50633_reg_read); + +int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val) +{ + int ret; + mutex_lock(&pcf->lock); + ret = i2c_smbus_write_byte_data(pcf->i2c_client, reg, val); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL(pcf50633_reg_write); + +int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val) +{ + int ret; + u8 tmp; + + val &= mask; + + mutex_lock(&pcf->lock); + + tmp = i2c_smbus_read_byte_data(pcf->i2c_client, reg); + tmp &= ~mask; + tmp |= val; + ret = i2c_smbus_write_byte_data(pcf->i2c_client, reg, tmp); + + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL(pcf50633_reg_set_bit_mask); + +int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 val) +{ + int ret; + u8 tmp; + + mutex_lock(&pcf->lock); + + tmp = i2c_smbus_read_byte_data(pcf->i2c_client, reg); + tmp &= ~val; + ret = i2c_smbus_write_byte_data(pcf->i2c_client, reg, tmp); + + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL(pcf50633_reg_clear_bits); + +/* sysfs attributes */ +static ssize_t show_dump_regs(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct pcf50633 *pcf = dev_get_drvdata(dev); + u8 dump[16]; + int n, n1, idx = 0; + char *buf1 = buf; + static u8 address_no_read[] = { /* must be ascending */ + PCF50633_REG_INT1, + PCF50633_REG_INT2, + PCF50633_REG_INT3, + PCF50633_REG_INT4, + PCF50633_REG_INT5, + 0 /* terminator */ + }; + + for (n = 0; n < 256; n += sizeof(dump)) { + for (n1 = 0; n1 < sizeof(dump); n1++) + if (n == address_no_read[idx]) { + idx++; + dump[n1] = 0x00; + } else + dump[n1] = pcf50633_reg_read(pcf, n + n1); + + hex_dump_to_buffer(dump, sizeof(dump), 16, 1, buf1, 128, 0); + buf1 += strlen(buf1); + *buf1++ = '\n'; + *buf1 = '\0'; + } + + return buf1 - buf; +} +static DEVICE_ATTR(dump_regs, 0400, show_dump_regs, NULL); + +static ssize_t show_resume_reason(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct pcf50633 *pcf = dev_get_drvdata(dev); + int n; + + n = sprintf(buf, "%02x%02x%02x%02x%02x\n", + pcf->resume_reason[0], + pcf->resume_reason[1], + pcf->resume_reason[2], + pcf->resume_reason[3], + pcf->resume_reason[4]); + + return n; +} +static DEVICE_ATTR(resume_reason, 0400, show_resume_reason, NULL); + +static struct attribute *pcf_sysfs_entries[] = { + &dev_attr_dump_regs.attr, + &dev_attr_resume_reason.attr, + NULL, +}; + +static struct attribute_group pcf_attr_group = { + .name = NULL, /* put in device directory */ + .attrs = pcf_sysfs_entries, +}; + + +static int pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, int mask) +{ + u8 reg, bits, tmp; + int ret = 0, idx; + + idx = irq / 8; + reg = PCF50633_REG_INT1M + idx; + bits = 1 << (irq % 8); + + mutex_lock(&pcf->lock); + + if (mask) { + tmp = i2c_smbus_read_byte_data(pcf->i2c_client, reg); + tmp |= bits; + ret = i2c_smbus_write_byte_data(pcf->i2c_client, reg, tmp); + + pcf->mask_regs[idx] &= ~bits; + pcf->mask_regs[idx] |= bits; + } else { + tmp = i2c_smbus_read_byte_data(pcf->i2c_client, reg); + tmp &= ~bits; + ret = i2c_smbus_write_byte_data(pcf->i2c_client, reg, tmp); + + pcf->mask_regs[idx] &= ~bits; + } + + mutex_unlock(&pcf->lock); + + return 0; +} + +int pcf50633_irq_mask(struct pcf50633 *pcf, int irq) +{ + dev_info(pcf->dev, "Masking IRQ %d\n", irq); + + return pcf50633_irq_mask_set(pcf, irq, 1); +} +EXPORT_SYMBOL(pcf50633_irq_mask); + +int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq) +{ + dev_info(pcf->dev, "Unmasking IRQ %d\n", irq); + + return pcf50633_irq_mask_set(pcf, irq, 0); +} +EXPORT_SYMBOL(pcf50633_irq_unmask); + +int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq) +{ + u8 reg, bits; + + reg = (irq / 8); + bits = (1 << (irq % 8)); + + return pcf->mask_regs[reg] & bits; +} +EXPORT_SYMBOL(pcf50633_irq_mask_get); + +static void pcf50633_irq_call_handler(struct pcf50633 *pcf, + int irq) +{ + if (pcf->irq_handler[irq].handler) + pcf->irq_handler[irq].handler(pcf, irq, + pcf->irq_handler[irq].data); +} + +#define PCF50633_ONKEY1S_TIMEOUT 8 + +static void pcf50633_irq_worker(struct work_struct *work) +{ + struct pcf50633 *pcf; + int ret, i, j; + u8 pcf_int[5], chgstat; + + pcf = container_of(work, struct pcf50633, irq_work); + + /* Read the 5 INT regs in one transaction */ + ret = pcf50633_read_block(pcf, PCF50633_REG_INT1, + sizeof(pcf_int), pcf_int); + if (ret != sizeof(pcf_int)) { + dev_info(pcf->dev, "Error reading INT registers\n"); + + /* We don't have an option but to retry. Because if + * we don't, there won't be another interrupt edge. + */ + goto reschedule; + } + + /* We immediately read the usb and adapter status. We thus make sure + * only of USBINS/USBREM and ADAPINS/ADPREM IRQ handlers are called */ + if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) { + chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2); + if (chgstat & (0x3 << 4)) + pcf_int[0] &= ~(1 << PCF50633_INT1_USBREM); + else + pcf_int[0] &= ~(1 << PCF50633_INT1_USBINS); + } + + if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) { + chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2); + if (chgstat & (0x3 << 4)) + pcf_int[0] &= ~(1 << PCF50633_INT1_ADPREM); + else + pcf_int[0] &= ~(1 << PCF50633_INT1_ADPINS); + } + + dev_info(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x " + "INT4=0x%02x INT5=0x%02x\n", pcf_int[0], + pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]); + + /* Some revisions of the chip don't have a 8s standby mode on + * ONKEY1S press. We try to manually do it in such cases. */ + + if (pcf_int[0] & PCF50633_INT1_SECOND && pcf->onkey1s_held) { + dev_info(pcf->dev, "ONKEY1S held for %d secs\n", + pcf->onkey1s_held); + if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT) + if (pcf->pdata->force_shutdown) + pcf->pdata->force_shutdown(pcf); + } + + if (pcf_int[2] & PCF50633_INT3_ONKEY1S) { + dev_info(pcf->dev, "ONKEY1S held\n"); + pcf->onkey1s_held = 1 ; + + /* Unmask IRQ_SECOND */ + pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M, + PCF50633_INT1_SECOND); + + /* Unmask IRQ_ONKEYR */ + pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M, + PCF50633_INT1_SECOND); + } + + if (pcf_int[1] & PCF50633_INT2_ONKEYR & pcf->onkey1s_held) { + pcf->onkey1s_held = 0; + + /* Mask SECOND and ONKEYR interrupts */ + if (pcf->mask_regs[0] & PCF50633_INT1_SECOND) + pcf50633_reg_set_bit_mask(pcf, + PCF50633_REG_INT1M, + PCF50633_INT1_SECOND, + PCF50633_INT1_SECOND); + + if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR) + pcf50633_reg_set_bit_mask(pcf, + PCF50633_REG_INT2M, + PCF50633_INT2_ONKEYR, + PCF50633_INT2_ONKEYR); + } + + /* Have we just resumed ? */ + if (pcf->is_suspended) { + + pcf->is_suspended = 0; + + /* Set the resume reason filtering out non resumers */ + for (i = 0; i < ARRAY_SIZE(pcf_int); i++) + pcf->resume_reason[i] = pcf_int[i] & + pcf->pdata->resumers[i]; + + /* Make sure we don't pass on any input events to + * userspace now */ + pcf_int[1] = 0; + } + + /* Unset masked interrupts */ + for (i = 0; i < 5; i++) + pcf_int[i] &= ~pcf->mask_regs[i]; + + for (i = 0; i < ARRAY_SIZE(pcf_int); i++) + for (j = 0; j < 8 ; j++) + if (pcf_int[i] & (1 << j)) + pcf50633_irq_call_handler(pcf, (i * 8) + j); + + put_device(pcf->dev); + + return; +reschedule: + schedule_work(&pcf->irq_work); + + /* Don't put_device here. Will be used when we are rescheduled */ + + return; +} + +static irqreturn_t pcf50633_irq(int irq, void *data) +{ + struct pcf50633 *pcf = data; + + get_device(pcf->dev); + schedule_work(&pcf->irq_work); + + return IRQ_HANDLED; +} + +static void +pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name, + struct platform_device **pdev) +{ + int ret; + + *pdev = platform_device_alloc(name, -1); + + if (!pdev) { + dev_err(pcf->dev, "Falied to allocate %s\n", name); + return; + } + + (*pdev)->dev.parent = pcf->dev; + platform_set_drvdata(*pdev, pcf); + + ret = platform_device_add(*pdev); + if (ret != 0) { + dev_err(pcf->dev, "Failed to register %s: %d\n", name, ret); + platform_device_put(*pdev); + *pdev = NULL; + } +} + +#ifdef CONFIG_PM +static int pcf50633_suspend(struct device *dev, pm_message_t state) +{ + struct pcf50633 *pcf; + int ret, i; + u8 res[5]; + + pcf = dev_get_drvdata(dev); + + /* Make sure our interrupt handlers are not called + * henceforth */ + disable_irq(pcf->irq); + + /* Make sure that an IRQ worker has quit */ + cancel_work_sync(&pcf->irq_work); + + /* Save the masks */ + ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M, 5, + pcf->suspend_irq_masks); + if (ret < 0) + dev_err(pcf->dev, "error saving irq masks\n"); + + /* Set interrupt masks. So that only those sources we want to wake + * us up can + */ + for (i = 0; i < 5; i++) + res[i] = ~pcf->pdata->resumers[i]; + + pcf50633_write_block(pcf, PCF50633_REG_INT1M, 5, &res[0]); + + pcf->is_suspended = 1; + + return 0; +} + +static int pcf50633_resume(struct device *dev) +{ + struct pcf50633 *pcf; + + pcf = dev_get_drvdata(dev); + + /* Write the saved mask registers */ + pcf50633_write_block(pcf, PCF50633_REG_INT1M, 5, + pcf->suspend_irq_masks); + + /* Clear any pending interrupts and set resume reason if any */ + pcf50633_irq_worker(&pcf->irq_work); + + enable_irq(pcf->irq); + + return 0; +} +#else +#define pcf50633_suspend NULL +#define pcf50633_resume NULL +#endif + +static int pcf50633_probe(struct i2c_client *client, + const struct i2c_device_id *ids) +{ + struct pcf50633 *pcf; + struct pcf50633_platform_data *pdata; + int i, ret = 0; + int version, variant; + u8 mbcs1; + + pdata = client->dev.platform_data; + + pcf = kzalloc(sizeof(*pcf), GFP_KERNEL); + if (!pcf) + return -ENOMEM; + + pcf->pdata = pdata; + pdata->pcf = pcf; + + mutex_init(&pcf->lock); + + i2c_set_clientdata(client, pcf); + pcf->dev = &client->dev; + pcf->i2c_client = client; + + INIT_WORK(&pcf->irq_work, pcf50633_irq_worker); + + version = pcf50633_reg_read(pcf, 0); + if (version < 0) { + dev_err(pcf->dev, "Unable to probe pcf50633\n"); + kfree(pcf); + return -ENODEV; + } + + variant = pcf50633_reg_read(pcf, 1); + if (version < 0) { + dev_err(pcf->dev, "Unable to probe pcf50633\n"); + kfree(pcf); + return -ENODEV; + } + + dev_info(pcf->dev, "Probed device version %d variant %d\n", + version, variant); + + /* Enable all inteerupts except RTC SECOND */ + pcf->mask_regs[0] = 0x80; + pcf50633_reg_write(pcf, PCF50633_REG_INT1M, 0x80); + + pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00); + pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00); + pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00); + pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00); + + pcf50633_client_dev_register(pcf, "pcf50633-input", + &pcf->input.pdev); + pcf50633_client_dev_register(pcf, "pcf50633-rtc", + &pcf->rtc.pdev); + pcf50633_client_dev_register(pcf, "pcf50633-mbc", + &pcf->mbc.pdev); + pcf50633_client_dev_register(pcf, "pcf50633-adc", + &pcf->adc.pdev); + pcf50633_client_dev_register(pcf, "pcf50633-gpio", + &pcf->gpio.pdev); + for (i = 0; i < PCF50633_NUM_REGULATORS; i++) { + struct platform_device *pdev; + + pdev = platform_device_alloc("pcf50633-regltr", i); + if (!pdev) { + dev_err(pcf->dev, "Cannot create regulator\n"); + continue; + } + + pdev->dev.parent = pcf->dev; + pdev->dev.platform_data = &pdata->reg_init_data[i]; + pdev->dev.driver_data = pcf; + pcf->pmic.pdev[i] = pdev; + + platform_device_add(pdev); + } + + pcf->irq = client->irq; + + if (client->irq) { + ret = request_irq(client->irq, pcf50633_irq, + IRQF_TRIGGER_FALLING, "pcf50633", pcf); + + if (ret) { + dev_err(pcf->dev, "Failed to request IRQ %d\n", ret); + goto err; + } + } else { + dev_err(pcf->dev, "No IRQ configured\n"); + goto err; + } + + if (enable_irq_wake(client->irq) < 0) + dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source" + "in this hardware revision", client->irq); + + /* Cold Intialization */ + mbcs1 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS1); + + if (mbcs1 & 0x01) + pcf50633_irq_call_handler(pcf, PCF50633_IRQ_USBINS); + if (mbcs1 & 0x04) + pcf50633_irq_call_handler(pcf, PCF50633_IRQ_ADPINS); + + ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group); + if (ret) + dev_err(pcf->dev, "error creating sysfs entries\n"); + + if (pdata->probe_done) + pdata->probe_done(pcf); + + return 0; + +err: + kfree(pcf); + return ret; +} + +static int pcf50633_remove(struct i2c_client *client) +{ + struct pcf50633 *pcf = i2c_get_clientdata(client); + + free_irq(pcf->irq, pcf); + kfree(pcf); + + return 0; +} + +static struct i2c_device_id pcf50633_id_table[] = { + {"pcf50633", 0x73}, +}; + +static struct i2c_driver pcf50633_driver = { + .driver = { + .name = "pcf50633", + .suspend = pcf50633_suspend, + .resume = pcf50633_resume, + }, + .id_table = pcf50633_id_table, + .probe = pcf50633_probe, + .remove = pcf50633_remove, +}; + +static int __init pcf50633_init(void) +{ + return i2c_add_driver(&pcf50633_driver); +} + +static void pcf50633_exit(void) +{ + i2c_del_driver(&pcf50633_driver); +} + +MODULE_DESCRIPTION("I2C chip driver for NXP PCF50633 PMU"); +MODULE_AUTHOR("Harald Welte "); +MODULE_LICENSE("GPL"); + +module_init(pcf50633_init); +module_exit(pcf50633_exit); diff --git a/drivers/mfd/pcf50633-gpio.c b/drivers/mfd/pcf50633-gpio.c new file mode 100644 index 00000000000..f71acbd6dbc --- /dev/null +++ b/drivers/mfd/pcf50633-gpio.c @@ -0,0 +1,62 @@ +#include +#include + +void pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, int on) +{ + u8 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; + + if (on) + pcf50633_reg_set_bit_mask(pcf, reg, 0x0f, 0x07); + else + pcf50633_reg_set_bit_mask(pcf, reg, 0x0f, 0x00); +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_set); + +int pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) +{ + u8 reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; + u8 val = pcf50633_reg_read(pcf, reg) & 0x0f; + + if (val == PCF50633_GPOCFG_GPOSEL_1 || + val == (PCF50633_GPOCFG_GPOSEL_0|PCF50633_GPOCFG_GPOSEL_INVERSE)) + return 1; + + return 0; +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_get); + +int __init pcf50633_gpio_probe(struct platform_device *pdev) +{ + return 0; +} + +static int __devexit pcf50633_gpio_remove(struct platform_device *pdev) +{ + return 0; +} + +struct platform_driver pcf50633_gpio_driver = { + .driver = { + .name = "pcf50633-gpio", + }, + .probe = pcf50633_gpio_probe, + .remove = __devexit_p(pcf50633_gpio_remove), +}; + +static int __init pcf50633_gpio_init(void) +{ + return platform_driver_register(&pcf50633_gpio_driver); +} +module_init(pcf50633_gpio_init); + +static void __exit pcf50633_gpio_exit(void) +{ + platform_driver_unregister(&pcf50633_gpio_driver); +} +module_exit(pcf50633_gpio_exit); + +MODULE_AUTHOR("Balaji Rao "); +MODULE_DESCRIPTION("PCF50633 gpio driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcf50633-gpio"); + diff --git a/drivers/mfd/pcf50633-i2c.c b/drivers/mfd/pcf50633-i2c.c new file mode 100644 index 00000000000..71912691238 --- /dev/null +++ b/drivers/mfd/pcf50633-i2c.c @@ -0,0 +1,3 @@ + +}; + diff --git a/drivers/mfd/pcf50633-mbc.c b/drivers/mfd/pcf50633-mbc.c new file mode 100644 index 00000000000..8e3eb4f7a57 --- /dev/null +++ b/drivers/mfd/pcf50633-mbc.c @@ -0,0 +1,292 @@ +#include +#include + + +/* +#if CONFIG_INPUT_PCF50633_PMU = +extern static void pcf50633_input_irq(struct pcf50633 *, int, void *); + +static void pcf50633_input_report(struct pcf50633 *pcf, int key) +{ + pcf50633_input_irq(pcf, key, NULL); +} +#else +static void pcf50633_input_report(struct pcf50633 *pcf, int key) +{ +} +#endif +*/ + +void pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma) +{ + int ret; + u8 bits; + + if (ma >= 1000) + bits = PCF50633_MBCC7_USB_1000mA; + else if (ma >= 500) + bits = PCF50633_MBCC7_USB_500mA; + else if (ma >= 100) + bits = PCF50633_MBCC7_USB_100mA; + else + bits = PCF50633_MBCC7_USB_SUSPEND; + + ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7, + PCF50633_MBCC7_USB_MASK, bits); + if (ret) + dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma); + else + dev_info(pcf->dev, "usb curlim to %d mA\n", ma); + + power_supply_changed(&pcf->mbc.usb); +} +EXPORT_SYMBOL(pcf50633_mbc_usb_curlim_set); + +static const char *chgmode_names[] = { + [PCF50633_MBCS2_MBC_PLAY] = "play-only", + [PCF50633_MBCS2_MBC_USB_PRE] = "pre", + [PCF50633_MBCS2_MBC_ADP_PRE] = "pre", + [PCF50633_MBCS2_MBC_USB_PRE_WAIT] = "pre-wait", + [PCF50633_MBCS2_MBC_ADP_PRE_WAIT] = "pre-wait", + [PCF50633_MBCS2_MBC_USB_FAST] = "fast", + [PCF50633_MBCS2_MBC_ADP_FAST] = "fast", + [PCF50633_MBCS2_MBC_USB_FAST_WAIT] = "fast-wait", + [PCF50633_MBCS2_MBC_ADP_FAST_WAIT] = "fast-wait", + [PCF50633_MBCS2_MBC_BAT_FULL] = "bat-full", +}; + +static ssize_t show_chgmode(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct pcf50633 *pcf = dev_get_drvdata(dev); + + u8 mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2); + u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK); + + return sprintf(buf, "%s %d\n", chgmode_names[chgmod], chgmod); +} +static DEVICE_ATTR(chgmode, S_IRUGO | S_IWUSR, show_chgmode, NULL); + +static ssize_t show_usblim(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct pcf50633 *pcf = dev_get_drvdata(dev); + u8 usblim = pcf50633_reg_read(pcf, PCF50633_REG_MBCC7) & + PCF50633_MBCC7_USB_MASK; + unsigned int ma; + + if (usblim == PCF50633_MBCC7_USB_1000mA) + ma = 1000; + else if (usblim == PCF50633_MBCC7_USB_500mA) + ma = 500; + else if (usblim == PCF50633_MBCC7_USB_100mA) + ma = 100; + else + ma = 0; + + return sprintf(buf, "%u\n", ma); +} +static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, NULL); + +static ssize_t force_usb_limit_dangerous(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct pcf50633 *pcf = dev_get_drvdata(dev); + unsigned long ma; + + strict_strtoul(buf, 10, &ma); + + pcf50633_mbc_usb_curlim_set(pcf, ma); + + return count; +} + +static DEVICE_ATTR(force_usb_limit_dangerous, 0600, + NULL, force_usb_limit_dangerous); + +static struct attribute *mbc_sysfs_entries[] = { + &dev_attr_chgmode.attr, + &dev_attr_usb_curlim.attr, + &dev_attr_force_usb_limit_dangerous.attr, + NULL, +}; + +static struct attribute_group mbc_attr_group = { + .name = NULL, /* put in device directory */ + .attrs = mbc_sysfs_entries, +}; + +static void pcf50633_mbc_irq_handler(struct pcf50633 *pcf, int irq, void *data) +{ + struct pcf50633_mbc *mbc; + + mbc = &pcf->mbc; + + /* USB */ + if (irq == PCF50633_IRQ_USBINS) + mbc->usb_online = 1; + else if (irq == PCF50633_IRQ_USBREM) { + mbc->usb_online = 0; + mbc->usb_active = 0; + pcf50633_mbc_usb_curlim_set(pcf, 0); + } + + /* Adapter */ + if (irq == PCF50633_IRQ_ADPINS) { + pcf->mbc.adapter_online = 1; + pcf->mbc.adapter_active = 1; + } else if (irq == PCF50633_IRQ_ADPREM) { + mbc->adapter_online = 0; + mbc->adapter_active = 0; + } + + if (irq == PCF50633_IRQ_BATFULL) { + mbc->usb_active = 0; + mbc->adapter_active = 0; + } + + power_supply_changed(&mbc->usb); + power_supply_changed(&mbc->adapter); + + if (pcf->pdata->mbc_event_callback) + pcf->pdata->mbc_event_callback(pcf, irq); +} + +static int adapter_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + int ret = 0; + struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = mbc->adapter_online; + break; + default: + ret = -EINVAL; + break; + } + return ret; +} + +static int usb_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + int ret = 0; + struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = mbc->usb_online; + break; + default: + ret = -EINVAL; + break; + } + return ret; +} + +static enum power_supply_property power_props[] = { + POWER_SUPPLY_PROP_ONLINE, +}; + +int __init pcf50633_mbc_probe(struct platform_device *pdev) +{ + struct pcf50633 *pcf; + struct pcf50633_mbc *mbc; + int ret; + + pcf = platform_get_drvdata(pdev); + mbc = &pcf->mbc; + + /* Set up IRQ handlers */ + pcf->irq_handler[PCF50633_IRQ_ADPINS].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_ADPREM].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_USBINS].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_USBREM].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_BATFULL].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_CHGHALT].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_THLIMON].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_THLIMOFF].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_USBLIMON].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_USBLIMOFF].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_LOWSYS].handler = + pcf50633_mbc_irq_handler; + pcf->irq_handler[PCF50633_IRQ_LOWBAT].handler = + pcf50633_mbc_irq_handler; + + /* Create power supplies */ + + mbc->adapter.name = "adapter"; + mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS; + mbc->adapter.properties = power_props; + mbc->adapter.num_properties = ARRAY_SIZE(power_props); + mbc->adapter.get_property = &adapter_get_property; + mbc->adapter.supplied_to = pcf->pdata->batteries; + mbc->adapter.num_supplicants = pcf->pdata->num_batteries; + + mbc->usb.name = "usb"; + mbc->usb.type = POWER_SUPPLY_TYPE_USB; + mbc->usb.properties = power_props; + mbc->usb.num_properties = ARRAY_SIZE(power_props); + mbc->usb.get_property = usb_get_property; + mbc->usb.supplied_to = pcf->pdata->batteries; + mbc->usb.num_supplicants = pcf->pdata->num_batteries; + + ret = power_supply_register(&pdev->dev, &mbc->adapter); + if (ret) + dev_err(pcf->dev, "failed to register adapter\n"); + + ret = power_supply_register(&pdev->dev, &mbc->usb); + if (ret) + dev_err(pcf->dev, "failed to register usb\n"); + + return sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group); +} + +static int __devexit pcf50633_mbc_remove(struct platform_device *pdev) +{ + struct pcf50633 *pcf; + + pcf = platform_get_drvdata(pdev); + + return 0; +} + +struct platform_driver pcf50633_mbc_driver = { + .driver = { + .name = "pcf50633-mbc", + }, + .probe = pcf50633_mbc_probe, + .remove = __devexit_p(pcf50633_mbc_remove), +}; + +static int __init pcf50633_mbc_init(void) +{ + return platform_driver_register(&pcf50633_mbc_driver); +} +module_init(pcf50633_mbc_init); + +static void __exit pcf50633_mbc_exit(void) +{ + platform_driver_unregister(&pcf50633_mbc_driver); +} +module_exit(pcf50633_mbc_exit); + +MODULE_AUTHOR("Balaji Rao "); +MODULE_DESCRIPTION("PCF50633 mbc driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcf50633-mbc"); + -- cgit v1.2.3