From f52046b14b1e1a8a02ae48d0c69d39c5e204644f Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:49:01 +0100 Subject: mfd: PCF50633 core driver This patch implements the core of the PCF50633 driver. This core driver has generic register read/write functions and does interrupt management for its sub devices. Signed-off-by: Balaji Rao Cc: Andy Green Signed-off-by: Samuel Ortiz --- drivers/mfd/Kconfig | 9 + drivers/mfd/Makefile | 2 + drivers/mfd/pcf50633-core.c | 710 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 721 insertions(+) create mode 100644 drivers/mfd/pcf50633-core.c (limited to 'drivers') diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 416f9e7286b..3ac32e45b03 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -217,6 +217,15 @@ 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 + help + Say yes here if you have NXP PCF50633 chip on your board. + This core driver provides register access and IRQ handling + facilities, and registers devices for the various functions + so that function-specific drivers can bind to them. + endmenu menu "Multimedia Capabilities Port drivers" diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 0c9418b36c2..23d4d10981b 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -37,3 +37,5 @@ endif obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o obj-$(CONFIG_PMIC_DA903X) += da903x.o + +obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o \ No newline at end of file diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c new file mode 100644 index 00000000000..24508e28e3f --- /dev/null +++ b/drivers/mfd/pcf50633-core.c @@ -0,0 +1,710 @@ +/* NXP PCF50633 Power Management Unit (PMU) driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Harald Welte + * Balaji Rao + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/* Two MBCS registers used during cold start */ +#define PCF50633_REG_MBCS1 0x4b +#define PCF50633_REG_MBCS2 0x4c +#define PCF50633_MBCS1_USBPRES 0x01 +#define PCF50633_MBCS1_ADAPTPRES 0x01 + +static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data) +{ + int ret; + + ret = i2c_smbus_read_i2c_block_data(pcf->i2c_client, reg, + num, data); + if (ret < 0) + dev_err(pcf->dev, "Error reading %d regs at %d\n", num, reg); + + return ret; +} + +static int __pcf50633_write(struct pcf50633 *pcf, u8 reg, int num, u8 *data) +{ + int ret; + + ret = i2c_smbus_write_i2c_block_data(pcf->i2c_client, reg, + num, data); + if (ret < 0) + dev_err(pcf->dev, "Error writing %d regs at %d\n", num, reg); + + return ret; + +} + +/* 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 = __pcf50633_read(pcf, reg, nr_regs, data); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(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 = __pcf50633_write(pcf, reg, nr_regs, data); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(pcf50633_write_block); + +u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg) +{ + u8 val; + + mutex_lock(&pcf->lock); + __pcf50633_read(pcf, reg, 1, &val); + mutex_unlock(&pcf->lock); + + return val; +} +EXPORT_SYMBOL_GPL(pcf50633_reg_read); + +int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val) +{ + int ret; + + mutex_lock(&pcf->lock); + ret = __pcf50633_write(pcf, reg, 1, &val); + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(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); + ret = __pcf50633_read(pcf, reg, 1, &tmp); + if (ret < 0) + goto out; + + tmp &= ~mask; + tmp |= val; + ret = __pcf50633_write(pcf, reg, 1, &tmp); + +out: + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(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); + ret = __pcf50633_read(pcf, reg, 1, &tmp); + if (ret < 0) + goto out; + + tmp &= ~val; + ret = __pcf50633_write(pcf, reg, 1, &tmp); + +out: + mutex_unlock(&pcf->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(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, +}; + +int pcf50633_register_irq(struct pcf50633 *pcf, int irq, + void (*handler) (int, void *), void *data) +{ + if (irq < 0 || irq > PCF50633_NUM_IRQ || !handler) + return -EINVAL; + + if (WARN_ON(pcf->irq_handler[irq].handler)) + return -EBUSY; + + mutex_lock(&pcf->lock); + pcf->irq_handler[irq].handler = handler; + pcf->irq_handler[irq].data = data; + mutex_unlock(&pcf->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(pcf50633_register_irq); + +int pcf50633_free_irq(struct pcf50633 *pcf, int irq) +{ + if (irq < 0 || irq > PCF50633_NUM_IRQ) + return -EINVAL; + + mutex_lock(&pcf->lock); + pcf->irq_handler[irq].handler = NULL; + mutex_unlock(&pcf->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(pcf50633_free_irq); + +static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask) +{ + u8 reg, bits, tmp; + int ret = 0, idx; + + idx = irq >> 3; + reg = PCF50633_REG_INT1M + idx; + bits = 1 << (irq & 0x07); + + mutex_lock(&pcf->lock); + + if (mask) { + ret = __pcf50633_read(pcf, reg, 1, &tmp); + if (ret < 0) + goto out; + + tmp |= bits; + + ret = __pcf50633_write(pcf, reg, 1, &tmp); + if (ret < 0) + goto out; + + pcf->mask_regs[idx] &= ~bits; + pcf->mask_regs[idx] |= bits; + } else { + ret = __pcf50633_read(pcf, reg, 1, &tmp); + if (ret < 0) + goto out; + + tmp &= ~bits; + + ret = __pcf50633_write(pcf, reg, 1, &tmp); + if (ret < 0) + goto out; + + pcf->mask_regs[idx] &= ~bits; + } +out: + mutex_unlock(&pcf->lock); + + return ret; +} + +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_GPL(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_GPL(pcf50633_irq_unmask); + +int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq) +{ + u8 reg, bits; + + reg = irq >> 3; + bits = 1 << (irq & 0x07); + + return pcf->mask_regs[reg] & bits; +} +EXPORT_SYMBOL_GPL(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(irq, pcf->irq_handler[irq].data); +} + +/* Maximum amount of time ONKEY is held before emergency action is taken */ +#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, + ARRAY_SIZE(pcf_int), pcf_int); + if (ret != ARRAY_SIZE(pcf_int)) { + dev_err(pcf->dev, "Error reading INT registers\n"); + + /* + * If this doesn't ACK the interrupt to the chip, we'll be + * called once again as we're level triggered. + */ + goto out; + } + + /* We immediately read the usb and adapter status. We thus make sure + * only of USBINS/USBREM 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); + } + + /* Make sure only one of ADPINS or ADPREM is set */ + 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_dbg(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_INT2M, + PCF50633_INT2_ONKEYR); + } + + 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 ONKEY events to + * userspace now */ + pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF); + } + + for (i = 0; i < ARRAY_SIZE(pcf_int); i++) { + /* Unset masked interrupts */ + pcf_int[i] &= ~pcf->mask_regs[i]; + + for (j = 0; j < 8 ; j++) + if (pcf_int[i] & (1 << j)) + pcf50633_irq_call_handler(pcf, (i * 8) + j); + } + +out: + put_device(pcf->dev); + enable_irq(pcf->irq); +} + +static irqreturn_t pcf50633_irq(int irq, void *data) +{ + struct pcf50633 *pcf = data; + + dev_dbg(pcf->dev, "pcf50633_irq\n"); + + get_device(pcf->dev); + disable_irq(pcf->irq); + schedule_work(&pcf->irq_work); + + return IRQ_HANDLED; +} + +static void +pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name, + struct platform_device **pdev) +{ + struct pcf50633_subdev_pdata *subdev_pdata; + int ret; + + *pdev = platform_device_alloc(name, -1); + if (!*pdev) { + dev_err(pcf->dev, "Falied to allocate %s\n", name); + return; + } + + subdev_pdata = kmalloc(sizeof(*subdev_pdata), GFP_KERNEL); + if (!subdev_pdata) { + dev_err(pcf->dev, "Error allocating subdev pdata\n"); + platform_device_put(*pdev); + } + + subdev_pdata->pcf = pcf; + platform_device_add_data(*pdev, subdev_pdata, sizeof(*subdev_pdata)); + + (*pdev)->dev.parent = pcf->dev; + + ret = platform_device_add(*pdev); + if (ret) { + 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 = 0, 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 any running IRQ worker has quit */ + cancel_work_sync(&pcf->irq_work); + + /* Save the masks */ + ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M, + ARRAY_SIZE(pcf->suspend_irq_masks), + pcf->suspend_irq_masks); + if (ret < 0) { + dev_err(pcf->dev, "error saving irq masks\n"); + goto out; + } + + /* Write wakeup irq masks */ + for (i = 0; i < ARRAY_SIZE(res); i++) + res[i] = ~pcf->pdata->resumers[i]; + + ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M, + ARRAY_SIZE(res), &res[0]); + if (ret < 0) { + dev_err(pcf->dev, "error writing wakeup irq masks\n"); + goto out; + } + + pcf->is_suspended = 1; + +out: + return ret; +} + +static int pcf50633_resume(struct device *dev) +{ + struct pcf50633 *pcf; + int ret; + + pcf = dev_get_drvdata(dev); + + /* Write the saved mask registers */ + ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M, + ARRAY_SIZE(pcf->suspend_irq_masks), + pcf->suspend_irq_masks); + if (ret < 0) + dev_err(pcf->dev, "Error restoring saved suspend masks\n"); + + /* Restore regulators' state */ + + + get_device(pcf->dev); + + /* + * Clear any pending interrupts and set resume reason if any. + * This will leave with enable_irq() + */ + pcf50633_irq_worker(&pcf->irq_work); + + return 0; +} +#else +#define pcf50633_suspend NULL +#define pcf50633_resume NULL +#endif + +static int __devinit pcf50633_probe(struct i2c_client *client, + const struct i2c_device_id *ids) +{ + struct pcf50633 *pcf; + struct pcf50633_platform_data *pdata = client->dev.platform_data; + int i, ret = 0; + int version, variant; + + pcf = kzalloc(sizeof(*pcf), GFP_KERNEL); + if (!pcf) + return -ENOMEM; + + pcf->pdata = pdata; + + mutex_init(&pcf->lock); + + i2c_set_clientdata(client, pcf); + pcf->dev = &client->dev; + pcf->i2c_client = client; + pcf->irq = client->irq; + + INIT_WORK(&pcf->irq_work, pcf50633_irq_worker); + + version = pcf50633_reg_read(pcf, 0); + variant = pcf50633_reg_read(pcf, 1); + if (version < 0 || variant < 0) { + dev_err(pcf->dev, "Unable to probe pcf50633\n"); + ret = -ENODEV; + goto err; + } + + dev_info(pcf->dev, "Probed device version %d variant %d\n", + version, variant); + + /* Enable all interrupts except RTC SECOND */ + pcf->mask_regs[0] = 0x80; + pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]); + 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); + + /* Create sub devices */ + 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); + + 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->regulator_pdev[i] = pdev; + + platform_device_add(pdev); + } + + if (client->irq) { + set_irq_handler(client->irq, handle_level_irq); + ret = request_irq(client->irq, pcf50633_irq, + IRQF_TRIGGER_LOW, "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); + + 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 __devexit pcf50633_remove(struct i2c_client *client) +{ + struct pcf50633 *pcf = i2c_get_clientdata(client); + int i; + + free_irq(pcf->irq, pcf); + + platform_device_unregister(pcf->input_pdev); + platform_device_unregister(pcf->rtc_pdev); + platform_device_unregister(pcf->mbc_pdev); + platform_device_unregister(pcf->adc_pdev); + + for (i = 0; i < PCF50633_NUM_REGULATORS; i++) + platform_device_unregister(pcf->regulator_pdev[i]); + + 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 = __devexit_p(pcf50633_remove), +}; + +static int __init pcf50633_init(void) +{ + return i2c_add_driver(&pcf50633_driver); +} + +static void __exit 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); -- cgit v1.2.3 From 08c3e06a5eb27d43b712adef18379f8464425e71 Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:49:26 +0100 Subject: mfd: PCF50633 adc driver This patch adds basic support for the PCF50633 ADC. The subtractive mode is not supported yet. Since we don't have adc subsystem, it currently lives in drivers/mfd. Signed-off-by: Balaji Rao Cc: Andy Green Acked-by: Jonathan Cameron Signed-off-by: Samuel Ortiz --- drivers/mfd/Kconfig | 7 ++ drivers/mfd/Makefile | 3 +- drivers/mfd/pcf50633-adc.c | 277 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 286 insertions(+), 1 deletion(-) create mode 100644 drivers/mfd/pcf50633-adc.c (limited to 'drivers') diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3ac32e45b03..2fa3504e165 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -226,6 +226,13 @@ config MFD_PCF50633 facilities, and registers devices for the various functions so that function-specific drivers can bind to them. +config PCF50633_ADC + tristate "Support for NXP PCF50633 ADC" + depends on MFD_PCF50633 + help + Say yes here if you want to include support for ADC in the + NXP PCF50633 chip. + endmenu menu "Multimedia Capabilities Port drivers" diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 23d4d10981b..138f9c4d3d7 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -38,4 +38,5 @@ obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o obj-$(CONFIG_PMIC_DA903X) += da903x.o -obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o \ No newline at end of file +obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o +obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o \ No newline at end of file diff --git a/drivers/mfd/pcf50633-adc.c b/drivers/mfd/pcf50633-adc.c new file mode 100644 index 00000000000..c2d05becfa9 --- /dev/null +++ b/drivers/mfd/pcf50633-adc.c @@ -0,0 +1,277 @@ +/* NXP PCF50633 ADC Driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Balaji Rao + * All rights reserved. + * + * Broken down from monstrous PCF50633 driver mainly by + * Harald Welte, Andy Green and Werner Almesberger + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * NOTE: This driver does not yet support subtractive ADC mode, which means + * you can do only one measurement per read request. + */ + +#include +#include +#include +#include +#include +#include + +#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; + +}; + +#define PCF50633_MAX_ADC_FIFO_DEPTH 8 + +struct pcf50633_adc { + struct pcf50633 *pcf; + + /* Private stuff */ + struct pcf50633_adc_request *queue[PCF50633_MAX_ADC_FIFO_DEPTH]; + int queue_head; + int queue_tail; + struct mutex queue_mutex; +}; + +static inline struct pcf50633_adc *__to_adc(struct pcf50633 *pcf) +{ + return platform_get_drvdata(pcf->adc_pdev); +} + +static void adc_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 on 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) +{ + struct pcf50633_adc *adc = __to_adc(pcf); + int head; + + mutex_lock(&adc->queue_mutex); + + head = adc->queue_head; + + if (!adc->queue[head]) { + mutex_unlock(&adc->queue_mutex); + return; + } + mutex_unlock(&adc->queue_mutex); + + adc_setup(pcf, adc->queue[head]->mux, adc->queue[head]->avg); +} + +static int +adc_enqueue_request(struct pcf50633 *pcf, struct pcf50633_adc_request *req) +{ + struct pcf50633_adc *adc = __to_adc(pcf); + int head, tail; + + mutex_lock(&adc->queue_mutex); + + head = adc->queue_head; + tail = adc->queue_tail; + + if (adc->queue[tail]) { + mutex_unlock(&adc->queue_mutex); + return -EBUSY; + } + + adc->queue[tail] = req; + adc->queue_tail = (tail + 1) & (PCF50633_MAX_ADC_FIFO_DEPTH - 1); + + mutex_unlock(&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 = param; + + req->result = result; + complete(&req->completion); +} + +int pcf50633_adc_sync_read(struct pcf50633 *pcf, int mux, int avg) +{ + struct pcf50633_adc_request *req; + + /* req is freed when the result is ready, in interrupt handler */ + 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); + + return req->result; +} +EXPORT_SYMBOL_GPL(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 interrupt handler */ + 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_GPL(pcf50633_adc_async_read); + +static int adc_result(struct pcf50633 *pcf) +{ + u8 adcs1, adcs3; + u16 result; + + adcs1 = pcf50633_reg_read(pcf, PCF50633_REG_ADCS1); + adcs3 = pcf50633_reg_read(pcf, PCF50633_REG_ADCS3); + result = (adcs1 << 2) | (adcs3 & PCF50633_ADCS3_ADCDAT1L_MASK); + + dev_dbg(pcf->dev, "adc result = %d\n", result); + + return result; +} + +static void pcf50633_adc_irq(int irq, void *data) +{ + struct pcf50633_adc *adc = data; + struct pcf50633 *pcf = adc->pcf; + struct pcf50633_adc_request *req; + int head; + + mutex_lock(&adc->queue_mutex); + head = adc->queue_head; + + req = adc->queue[head]; + if (WARN_ON(!req)) { + dev_err(pcf->dev, "pcf50633-adc irq: ADC queue empty!\n"); + mutex_unlock(&adc->queue_mutex); + return; + } + adc->queue[head] = NULL; + adc->queue_head = (head + 1) & + (PCF50633_MAX_ADC_FIFO_DEPTH - 1); + + mutex_unlock(&adc->queue_mutex); + + req->callback(pcf, req->callback_param, adc_result(pcf)); + kfree(req); + + trigger_next_adc_job_if_any(pcf); +} + +static int __devinit pcf50633_adc_probe(struct platform_device *pdev) +{ + struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data; + struct pcf50633_adc *adc; + + adc = kzalloc(sizeof(*adc), GFP_KERNEL); + if (!adc) + return -ENOMEM; + + adc->pcf = pdata->pcf; + platform_set_drvdata(pdev, adc); + + pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ADCRDY, + pcf50633_adc_irq, adc); + + mutex_init(&adc->queue_mutex); + + return 0; +} + +static int __devexit pcf50633_adc_remove(struct platform_device *pdev) +{ + struct pcf50633_adc *adc = platform_get_drvdata(pdev); + int i, head; + + pcf50633_free_irq(adc->pcf, PCF50633_IRQ_ADCRDY); + + mutex_lock(&adc->queue_mutex); + head = adc->queue_head; + + if (WARN_ON(adc->queue[head])) + dev_err(adc->pcf->dev, + "adc driver removed with request pending\n"); + + for (i = 0; i < PCF50633_MAX_ADC_FIFO_DEPTH; i++) + kfree(adc->queue[i]); + + mutex_unlock(&adc->queue_mutex); + kfree(adc); + + return 0; +} + +static 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"); + -- cgit v1.2.3 From 6a3d119b4ce29cf32bfe91eb61d46e9dbd8ce38a Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:49:37 +0100 Subject: mfd: PCF50633 gpio support What the PCF05633 calls as a 'GPIO' is much more than the GPIO in the linux sense and there are only 4 of them - which means, the gpiolib is not used here. Signed-off-by: Balaji Rao Cc: Andy Green Signed-off-by: Samuel Ortiz --- drivers/mfd/Kconfig | 7 +++ drivers/mfd/Makefile | 3 +- drivers/mfd/pcf50633-gpio.c | 118 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 127 insertions(+), 1 deletion(-) create mode 100644 drivers/mfd/pcf50633-gpio.c (limited to 'drivers') diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 2fa3504e165..06a2b0f7737 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -233,6 +233,13 @@ config PCF50633_ADC Say yes here if you want to include support for ADC in the NXP PCF50633 chip. +config PCF50633_GPIO + tristate "Support for NXP PCF50633 GPIO" + depends on MFD_PCF50633 + help + Say yes here if you want to include support GPIO for pins on + the PCF50633 chip. + endmenu menu "Multimedia Capabilities Port drivers" diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 138f9c4d3d7..3afb5192e4d 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -39,4 +39,5 @@ obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o obj-$(CONFIG_PMIC_DA903X) += da903x.o obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o -obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o \ No newline at end of file +obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o +obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o \ No newline at end of file diff --git a/drivers/mfd/pcf50633-gpio.c b/drivers/mfd/pcf50633-gpio.c new file mode 100644 index 00000000000..2fa2eca5c9c --- /dev/null +++ b/drivers/mfd/pcf50633-gpio.c @@ -0,0 +1,118 @@ +/* NXP PCF50633 GPIO Driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Balaji Rao + * All rights reserved. + * + * Broken down from monstrous PCF50633 driver mainly by + * Harald Welte, Andy Green and Werner Almesberger + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include + +#include +#include + +enum pcf50633_regulator_id { + PCF50633_REGULATOR_AUTO, + PCF50633_REGULATOR_DOWN1, + PCF50633_REGULATOR_DOWN2, + PCF50633_REGULATOR_LDO1, + PCF50633_REGULATOR_LDO2, + PCF50633_REGULATOR_LDO3, + PCF50633_REGULATOR_LDO4, + PCF50633_REGULATOR_LDO5, + PCF50633_REGULATOR_LDO6, + PCF50633_REGULATOR_HCLDO, + PCF50633_REGULATOR_MEMLDO, +}; + +#define PCF50633_REG_AUTOOUT 0x1a +#define PCF50633_REG_DOWN1OUT 0x1e +#define PCF50633_REG_DOWN2OUT 0x22 +#define PCF50633_REG_MEMLDOOUT 0x26 +#define PCF50633_REG_LDO1OUT 0x2d +#define PCF50633_REG_LDO2OUT 0x2f +#define PCF50633_REG_LDO3OUT 0x31 +#define PCF50633_REG_LDO4OUT 0x33 +#define PCF50633_REG_LDO5OUT 0x35 +#define PCF50633_REG_LDO6OUT 0x37 +#define PCF50633_REG_HCLDOOUT 0x39 + +static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { + [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, + [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, + [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, + [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, + [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, + [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, + [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, + [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, + [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, + [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, + [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, +}; + +int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val) +{ + u8 reg; + + reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; + + return pcf50633_reg_set_bit_mask(pcf, reg, 0x07, val); +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_set); + +u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) +{ + u8 reg, val; + + reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; + val = pcf50633_reg_read(pcf, reg) & 0x07; + + return val; +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_get); + +int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert) +{ + u8 val, reg; + + reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; + val = !!invert << 3; + + return pcf50633_reg_set_bit_mask(pcf, reg, 1 << 3, val); +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); + +int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio) +{ + u8 reg, val; + + reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; + val = pcf50633_reg_read(pcf, reg); + + return val & (1 << 3); +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); + +int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf, + int gpio, int regulator, int on) +{ + u8 reg, val, mask; + + /* the *ENA register is always one after the *OUT register */ + reg = pcf50633_regulator_registers[regulator] + 1; + + val = !!on << (gpio - PCF50633_GPIO1); + mask = 1 << (gpio - PCF50633_GPIO1); + + return pcf50633_reg_set_bit_mask(pcf, reg, mask, val); +} +EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set); -- cgit v1.2.3 From eae854b22d25a6d08524c0783a2c772e67121840 Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:50:51 +0100 Subject: rtc: PCF50633 rtc driver Signed-off-by: Balaji Rao Cc: Andy Green Acked-by: Alessandro Zummo Cc: Paul Gortmaker Cc: rtc-linux@googlegroups.com Signed-off-by: Samuel Ortiz --- drivers/rtc/Kconfig | 7 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-pcf50633.c | 344 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 352 insertions(+) create mode 100644 drivers/rtc/rtc-pcf50633.c (limited to 'drivers') diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 4ad831de41a..cced4d10831 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -502,6 +502,13 @@ config RTC_DRV_WM8350 This driver can also be built as a module. If so, the module will be called "rtc-wm8350". +config RTC_DRV_PCF50633 + depends on MFD_PCF50633 + tristate "NXP PCF50633 RTC" + help + If you say yes here you get support for the RTC subsystem of the + NXP PCF50633 used in embedded systems. + comment "on-CPU RTC drivers" config RTC_DRV_OMAP diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 9a4340d48f2..6e28021abb9 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -74,3 +74,4 @@ obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o +obj-$(CONFIG_RTC_DRV_PCF50633) += rtc-pcf50633.o diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c new file mode 100644 index 00000000000..f4dd87e2907 --- /dev/null +++ b/drivers/rtc/rtc-pcf50633.c @@ -0,0 +1,344 @@ +/* NXP PCF50633 RTC Driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Balaji Rao + * All rights reserved. + * + * Broken down from monstrous PCF50633 driver mainly by + * Harald Welte, Andy Green and Werner Almesberger + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define PCF50633_REG_RTCSC 0x59 /* Second */ +#define PCF50633_REG_RTCMN 0x5a /* Minute */ +#define PCF50633_REG_RTCHR 0x5b /* Hour */ +#define PCF50633_REG_RTCWD 0x5c /* Weekday */ +#define PCF50633_REG_RTCDT 0x5d /* Day */ +#define PCF50633_REG_RTCMT 0x5e /* Month */ +#define PCF50633_REG_RTCYR 0x5f /* Year */ +#define PCF50633_REG_RTCSCA 0x60 /* Alarm Second */ +#define PCF50633_REG_RTCMNA 0x61 /* Alarm Minute */ +#define PCF50633_REG_RTCHRA 0x62 /* Alarm Hour */ +#define PCF50633_REG_RTCWDA 0x63 /* Alarm Weekday */ +#define PCF50633_REG_RTCDTA 0x64 /* Alarm Day */ +#define PCF50633_REG_RTCMTA 0x65 /* Alarm Month */ +#define PCF50633_REG_RTCYRA 0x66 /* Alarm Year */ + +enum pcf50633_time_indexes { + PCF50633_TI_SEC, + PCF50633_TI_MIN, + PCF50633_TI_HOUR, + PCF50633_TI_WKDAY, + PCF50633_TI_DAY, + PCF50633_TI_MONTH, + PCF50633_TI_YEAR, + PCF50633_TI_EXTENT /* always last */ +}; + +struct pcf50633_time { + u_int8_t time[PCF50633_TI_EXTENT]; +}; + +struct pcf50633_rtc { + int alarm_enabled; + int second_enabled; + + struct pcf50633 *pcf; + struct rtc_device *rtc_dev; +}; + +static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf) +{ + rtc->tm_sec = bcd2bin(pcf->time[PCF50633_TI_SEC]); + rtc->tm_min = bcd2bin(pcf->time[PCF50633_TI_MIN]); + rtc->tm_hour = bcd2bin(pcf->time[PCF50633_TI_HOUR]); + rtc->tm_wday = bcd2bin(pcf->time[PCF50633_TI_WKDAY]); + rtc->tm_mday = bcd2bin(pcf->time[PCF50633_TI_DAY]); + rtc->tm_mon = bcd2bin(pcf->time[PCF50633_TI_MONTH]); + rtc->tm_year = bcd2bin(pcf->time[PCF50633_TI_YEAR]) + 100; +} + +static void rtc2pcf_time(struct pcf50633_time *pcf, struct rtc_time *rtc) +{ + pcf->time[PCF50633_TI_SEC] = bin2bcd(rtc->tm_sec); + pcf->time[PCF50633_TI_MIN] = bin2bcd(rtc->tm_min); + pcf->time[PCF50633_TI_HOUR] = bin2bcd(rtc->tm_hour); + pcf->time[PCF50633_TI_WKDAY] = bin2bcd(rtc->tm_wday); + pcf->time[PCF50633_TI_DAY] = bin2bcd(rtc->tm_mday); + pcf->time[PCF50633_TI_MONTH] = bin2bcd(rtc->tm_mon); + pcf->time[PCF50633_TI_YEAR] = bin2bcd(rtc->tm_year % 100); +} + +static int +pcf50633_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) +{ + struct pcf50633_rtc *rtc = dev_get_drvdata(dev); + int err; + + if (enabled) + err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); + else + err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); + + if (err < 0) + return err; + + rtc->alarm_enabled = enabled; + + return 0; +} + +static int +pcf50633_rtc_update_irq_enable(struct device *dev, unsigned int enabled) +{ + struct pcf50633_rtc *rtc = dev_get_drvdata(dev); + int err; + + if (enabled) + err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_SECOND); + else + err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_SECOND); + + if (err < 0) + return err; + + rtc->second_enabled = enabled; + + return 0; +} + +static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct pcf50633_rtc *rtc; + struct pcf50633_time pcf_tm; + int ret; + + rtc = dev_get_drvdata(dev); + + ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSC, + PCF50633_TI_EXTENT, + &pcf_tm.time[0]); + if (ret != PCF50633_TI_EXTENT) { + dev_err(dev, "Failed to read time\n"); + return -EIO; + } + + dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n", + pcf_tm.time[PCF50633_TI_DAY], + pcf_tm.time[PCF50633_TI_MONTH], + pcf_tm.time[PCF50633_TI_YEAR], + pcf_tm.time[PCF50633_TI_HOUR], + pcf_tm.time[PCF50633_TI_MIN], + pcf_tm.time[PCF50633_TI_SEC]); + + pcf2rtc_time(tm, &pcf_tm); + + dev_dbg(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n", + tm->tm_mday, tm->tm_mon, tm->tm_year, + tm->tm_hour, tm->tm_min, tm->tm_sec); + + return rtc_valid_tm(tm); +} + +static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct pcf50633_rtc *rtc; + struct pcf50633_time pcf_tm; + int second_masked, alarm_masked, ret = 0; + + rtc = dev_get_drvdata(dev); + + dev_dbg(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n", + tm->tm_mday, tm->tm_mon, tm->tm_year, + tm->tm_hour, tm->tm_min, tm->tm_sec); + + rtc2pcf_time(&pcf_tm, tm); + + dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n", + pcf_tm.time[PCF50633_TI_DAY], + pcf_tm.time[PCF50633_TI_MONTH], + pcf_tm.time[PCF50633_TI_YEAR], + pcf_tm.time[PCF50633_TI_HOUR], + pcf_tm.time[PCF50633_TI_MIN], + pcf_tm.time[PCF50633_TI_SEC]); + + + second_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_SECOND); + alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM); + + if (!second_masked) + pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_SECOND); + if (!alarm_masked) + pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); + + /* Returns 0 on success */ + ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSC, + PCF50633_TI_EXTENT, + &pcf_tm.time[0]); + + if (!second_masked) + pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_SECOND); + if (!alarm_masked) + pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); + + return ret; +} + +static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct pcf50633_rtc *rtc; + struct pcf50633_time pcf_tm; + int ret = 0; + + rtc = dev_get_drvdata(dev); + + alrm->enabled = rtc->alarm_enabled; + + ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSCA, + PCF50633_TI_EXTENT, &pcf_tm.time[0]); + if (ret != PCF50633_TI_EXTENT) { + dev_err(dev, "Failed to read time\n"); + return -EIO; + } + + pcf2rtc_time(&alrm->time, &pcf_tm); + + return rtc_valid_tm(&alrm->time); +} + +static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct pcf50633_rtc *rtc; + struct pcf50633_time pcf_tm; + int alarm_masked, ret = 0; + + rtc = dev_get_drvdata(dev); + + rtc2pcf_time(&pcf_tm, &alrm->time); + + /* do like mktime does and ignore tm_wday */ + pcf_tm.time[PCF50633_TI_WKDAY] = 7; + + alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM); + + /* disable alarm interrupt */ + if (!alarm_masked) + pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); + + /* Returns 0 on success */ + ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSCA, + PCF50633_TI_EXTENT, &pcf_tm.time[0]); + + if (!alarm_masked) + pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); + + return ret; +} + +static struct rtc_class_ops pcf50633_rtc_ops = { + .read_time = pcf50633_rtc_read_time, + .set_time = pcf50633_rtc_set_time, + .read_alarm = pcf50633_rtc_read_alarm, + .set_alarm = pcf50633_rtc_set_alarm, + .alarm_irq_enable = pcf50633_rtc_alarm_irq_enable, + .update_irq_enable = pcf50633_rtc_update_irq_enable, +}; + +static void pcf50633_rtc_irq(int irq, void *data) +{ + struct pcf50633_rtc *rtc = data; + + switch (irq) { + case PCF50633_IRQ_ALARM: + rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF); + break; + case PCF50633_IRQ_SECOND: + rtc_update_irq(rtc->rtc_dev, 1, RTC_UF | RTC_IRQF); + break; + } +} + +static int __devinit pcf50633_rtc_probe(struct platform_device *pdev) +{ + struct pcf50633_subdev_pdata *pdata; + struct pcf50633_rtc *rtc; + + + rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); + if (!rtc) + return -ENOMEM; + + pdata = pdev->dev.platform_data; + rtc->pcf = pdata->pcf; + platform_set_drvdata(pdev, rtc); + rtc->rtc_dev = rtc_device_register("pcf50633-rtc", &pdev->dev, + &pcf50633_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc->rtc_dev)) { + kfree(rtc); + return PTR_ERR(rtc->rtc_dev); + } + + pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM, + pcf50633_rtc_irq, rtc); + pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_SECOND, + pcf50633_rtc_irq, rtc); + + return 0; +} + +static int __devexit pcf50633_rtc_remove(struct platform_device *pdev) +{ + struct pcf50633_rtc *rtc; + + rtc = platform_get_drvdata(pdev); + + pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM); + pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_SECOND); + + rtc_device_unregister(rtc->rtc_dev); + kfree(rtc); + + return 0; +} + +static struct platform_driver pcf50633_rtc_driver = { + .driver = { + .name = "pcf50633-rtc", + }, + .probe = pcf50633_rtc_probe, + .remove = __devexit_p(pcf50633_rtc_remove), +}; + +static int __init pcf50633_rtc_init(void) +{ + return platform_driver_register(&pcf50633_rtc_driver); +} +module_init(pcf50633_rtc_init); + +static void __exit pcf50633_rtc_exit(void) +{ + platform_driver_unregister(&pcf50633_rtc_driver); +} +module_exit(pcf50633_rtc_exit); + +MODULE_DESCRIPTION("PCF50633 RTC driver"); +MODULE_AUTHOR("Balaji Rao "); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3 From f5714dc97d63cc0dd1219bd0eb2e1f8df1e4347a Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:50:55 +0100 Subject: power_supply: PCF50633 battery charger driver Signed-off-by: Balaji Rao Cc: Andy Green Cc: David Woodhouse Acked-by: Anton Vorontsov Signed-off-by: Samuel Ortiz --- drivers/power/Kconfig | 6 + drivers/power/Makefile | 1 + drivers/power/pcf50633-charger.c | 358 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 365 insertions(+) create mode 100644 drivers/power/pcf50633-charger.c (limited to 'drivers') diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 668472405a5..33da1127992 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -82,4 +82,10 @@ config BATTERY_DA9030 Say Y here to enable support for batteries charger integrated into DA9030 PMIC. +config CHARGER_PCF50633 + tristate "NXP PCF50633 MBC" + depends on MFD_PCF50633 + help + Say Y to include support for NXP PCF50633 Main Battery Charger. + endif # POWER_SUPPLY diff --git a/drivers/power/Makefile b/drivers/power/Makefile index eebb15505a4..2fcf41d13e5 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -25,3 +25,4 @@ obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o +obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o \ No newline at end of file diff --git a/drivers/power/pcf50633-charger.c b/drivers/power/pcf50633-charger.c new file mode 100644 index 00000000000..e988ec130fc --- /dev/null +++ b/drivers/power/pcf50633-charger.c @@ -0,0 +1,358 @@ +/* NXP PCF50633 Main Battery Charger Driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Balaji Rao + * All rights reserved. + * + * Broken down from monstrous PCF50633 driver mainly by + * Harald Welte, Andy Green and Werner Almesberger + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +struct pcf50633_mbc { + struct pcf50633 *pcf; + + int adapter_active; + int adapter_online; + int usb_active; + int usb_online; + + struct power_supply usb; + struct power_supply adapter; +}; + +int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma) +{ + struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev); + int ret = 0; + 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(&mbc->usb); + + return ret; +} +EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set); + +int pcf50633_mbc_get_status(struct pcf50633 *pcf) +{ + struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev); + int status = 0; + + if (mbc->usb_online) + status |= PCF50633_MBC_USB_ONLINE; + if (mbc->usb_active) + status |= PCF50633_MBC_USB_ACTIVE; + if (mbc->adapter_online) + status |= PCF50633_MBC_ADAPTER_ONLINE; + if (mbc->adapter_active) + status |= PCF50633_MBC_ADAPTER_ACTIVE; + + return status; +} +EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status); + +void pcf50633_mbc_set_status(struct pcf50633 *pcf, int what, int status) +{ + struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev); + + if (what & PCF50633_MBC_USB_ONLINE) + mbc->usb_online = !!status; + if (what & PCF50633_MBC_USB_ACTIVE) + mbc->usb_active = !!status; + if (what & PCF50633_MBC_ADAPTER_ONLINE) + mbc->adapter_online = !!status; + if (what & PCF50633_MBC_ADAPTER_ACTIVE) + mbc->adapter_active = !!status; +} +EXPORT_SYMBOL_GPL(pcf50633_mbc_set_status); + +static ssize_t +show_chgmode(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct pcf50633_mbc *mbc = dev_get_drvdata(dev); + + u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2); + u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK); + + return sprintf(buf, "%d\n", chgmod); +} +static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL); + +static ssize_t +show_usblim(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct pcf50633_mbc *mbc = dev_get_drvdata(dev); + u8 usblim = pcf50633_reg_read(mbc->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 ssize_t set_usblim(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct pcf50633_mbc *mbc = dev_get_drvdata(dev); + unsigned long ma; + int ret; + + ret = strict_strtoul(buf, 10, &ma); + if (ret) + return -EINVAL; + + pcf50633_mbc_usb_curlim_set(mbc->pcf, ma); + + return count; +} + +static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim); + +static struct attribute *pcf50633_mbc_sysfs_entries[] = { + &dev_attr_chgmode.attr, + &dev_attr_usb_curlim.attr, + NULL, +}; + +static struct attribute_group mbc_attr_group = { + .name = NULL, /* put in device directory */ + .attrs = pcf50633_mbc_sysfs_entries, +}; + +static void +pcf50633_mbc_irq_handler(int irq, void *data) +{ + struct pcf50633_mbc *mbc = data; + + /* 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(mbc->pcf, 0); + } + + /* Adapter */ + if (irq == PCF50633_IRQ_ADPINS) { + mbc->adapter_online = 1; + 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 (mbc->pcf->pdata->mbc_event_callback) + mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq); +} + +static int adapter_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb); + int ret = 0; + + 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) +{ + struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb); + int ret = 0; + + 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, +}; + +static const u8 mbc_irq_handlers[] = { + PCF50633_IRQ_ADPINS, + PCF50633_IRQ_ADPREM, + PCF50633_IRQ_USBINS, + PCF50633_IRQ_USBREM, + PCF50633_IRQ_BATFULL, + PCF50633_IRQ_CHGHALT, + PCF50633_IRQ_THLIMON, + PCF50633_IRQ_THLIMOFF, + PCF50633_IRQ_USBLIMON, + PCF50633_IRQ_USBLIMOFF, + PCF50633_IRQ_LOWSYS, + PCF50633_IRQ_LOWBAT, +}; + +static int __devinit pcf50633_mbc_probe(struct platform_device *pdev) +{ + struct pcf50633_mbc *mbc; + struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data; + int ret; + int i; + u8 mbcs1; + + mbc = kzalloc(sizeof(*mbc), GFP_KERNEL); + if (!mbc) + return -ENOMEM; + + platform_set_drvdata(pdev, mbc); + mbc->pcf = pdata->pcf; + + /* Set up IRQ handlers */ + for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++) + pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i], + pcf50633_mbc_irq_handler, mbc); + + /* 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 = mbc->pcf->pdata->batteries; + mbc->adapter.num_supplicants = mbc->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 = mbc->pcf->pdata->batteries; + mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries; + + ret = power_supply_register(&pdev->dev, &mbc->adapter); + if (ret) { + dev_err(mbc->pcf->dev, "failed to register adapter\n"); + kfree(mbc); + return ret; + } + + ret = power_supply_register(&pdev->dev, &mbc->usb); + if (ret) { + dev_err(mbc->pcf->dev, "failed to register usb\n"); + power_supply_unregister(&mbc->adapter); + kfree(mbc); + return ret; + } + + ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group); + if (ret) + dev_err(mbc->pcf->dev, "failed to create sysfs entries\n"); + + mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1); + if (mbcs1 & PCF50633_MBCS1_USBPRES) + pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc); + if (mbcs1 & PCF50633_MBCS1_ADAPTPRES) + pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc); + + return 0; +} + +static int __devexit pcf50633_mbc_remove(struct platform_device *pdev) +{ + struct pcf50633_mbc *mbc = platform_get_drvdata(pdev); + int i; + + /* Remove IRQ handlers */ + for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++) + pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]); + + power_supply_unregister(&mbc->usb); + power_supply_unregister(&mbc->adapter); + + kfree(mbc); + + return 0; +} + +static 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 From 1851b06ac40c57fe4efe7ddefc3c04dab4f99e67 Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:50:58 +0100 Subject: input: PCF50633 input driver Signed-off-by: Balaji Rao Cc: Andy Green Cc: Dmitry Torokhov Acked-by: Dmitry Torokhov Signed-off-by: Samuel Ortiz --- drivers/input/misc/Kconfig | 7 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/pcf50633-input.c | 132 ++++++++++++++++++++++++++++++++++++ 3 files changed, 140 insertions(+) create mode 100644 drivers/input/misc/pcf50633-input.c (limited to 'drivers') diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 199055db508..67e5553f699 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -220,4 +220,11 @@ config HP_SDC_RTC Say Y here if you want to support the built-in real time clock of the HP SDC controller. +config INPUT_PCF50633_PMU + tristate "PCF50633 PMU events" + depends on MFD_PCF50633 + help + Say Y to include support for delivering PMU events via input + layer on NXP PCF50633. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index d7db2aeb8a9..bb62e6efacf 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -21,3 +21,4 @@ obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o obj-$(CONFIG_INPUT_UINPUT) += uinput.o obj-$(CONFIG_INPUT_APANEL) += apanel.o obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o +obj-$(CONFIG_INPUT_PCF50633_PMU) += pcf50633-input.o diff --git a/drivers/input/misc/pcf50633-input.c b/drivers/input/misc/pcf50633-input.c new file mode 100644 index 00000000000..039dcb00ebd --- /dev/null +++ b/drivers/input/misc/pcf50633-input.c @@ -0,0 +1,132 @@ +/* NXP PCF50633 Input Driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Balaji Rao + * All rights reserved. + * + * Broken down from monstrous PCF50633 driver mainly by + * Harald Welte, Andy Green and Werner Almesberger + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include + +#include + +#define PCF50633_OOCSTAT_ONKEY 0x01 +#define PCF50633_REG_OOCSTAT 0x12 +#define PCF50633_REG_OOCMODE 0x10 + +struct pcf50633_input { + struct pcf50633 *pcf; + struct input_dev *input_dev; +}; + +static void +pcf50633_input_irq(int irq, void *data) +{ + struct pcf50633_input *input; + int onkey_released; + + input = data; + + /* We report only one event depending on the key press status */ + onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT) + & PCF50633_OOCSTAT_ONKEY; + + if (irq == PCF50633_IRQ_ONKEYF && !onkey_released) + input_report_key(input->input_dev, KEY_POWER, 1); + else if (irq == PCF50633_IRQ_ONKEYR && onkey_released) + input_report_key(input->input_dev, KEY_POWER, 0); + + input_sync(input->input_dev); +} + +static int __devinit pcf50633_input_probe(struct platform_device *pdev) +{ + struct pcf50633_input *input; + struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data; + struct input_dev *input_dev; + int ret; + + + input = kzalloc(sizeof(*input), GFP_KERNEL); + if (!input) + return -ENOMEM; + + input_dev = input_allocate_device(); + if (!input_dev) { + kfree(input); + return -ENOMEM; + } + + platform_set_drvdata(pdev, input); + input->pcf = pdata->pcf; + input->input_dev = input_dev; + + input_dev->name = "PCF50633 PMU events"; + input_dev->id.bustype = BUS_I2C; + input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR); + set_bit(KEY_POWER, input_dev->keybit); + + ret = input_register_device(input_dev); + if (ret) { + input_free_device(input_dev); + kfree(input); + return ret; + } + pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYR, + pcf50633_input_irq, input); + pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYF, + pcf50633_input_irq, input); + + return 0; +} + +static int __devexit pcf50633_input_remove(struct platform_device *pdev) +{ + struct pcf50633_input *input = platform_get_drvdata(pdev); + + pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR); + pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF); + + input_unregister_device(input->input_dev); + kfree(input); + + return 0; +} + +static struct platform_driver pcf50633_input_driver = { + .driver = { + .name = "pcf50633-input", + }, + .probe = pcf50633_input_probe, + .remove = __devexit_p(pcf50633_input_remove), +}; + +static int __init pcf50633_input_init(void) +{ + return platform_driver_register(&pcf50633_input_driver); +} +module_init(pcf50633_input_init); + +static void __exit pcf50633_input_exit(void) +{ + platform_driver_unregister(&pcf50633_input_driver); +} +module_exit(pcf50633_input_exit); + +MODULE_AUTHOR("Balaji Rao "); +MODULE_DESCRIPTION("PCF50633 input driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcf50633-input"); -- cgit v1.2.3 From 5ec271e745350c7df6a6ebca24b43cb7a10bfa4a Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Fri, 9 Jan 2009 01:51:01 +0100 Subject: regulator: PCF50633 pmic driver Changes from V1: - Removed support for suspend_enable & suspend_disable functions. Signed-off-by: Balaji Rao Cc: Andy Green Cc: Liam Girdwood Acked-by: Mark Brown Signed-off-by: Samuel Ortiz --- drivers/regulator/Kconfig | 7 + drivers/regulator/Makefile | 1 + drivers/regulator/pcf50633-regulator.c | 329 +++++++++++++++++++++++++++++++++ 3 files changed, 337 insertions(+) create mode 100644 drivers/regulator/pcf50633-regulator.c (limited to 'drivers') diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 39360e2a454..e7e0cf102d6 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -73,4 +73,11 @@ config REGULATOR_DA903X Say y here to support the BUCKs and LDOs regulators found on Dialog Semiconductor DA9030/DA9034 PMIC. +config REGULATOR_PCF50633 + tristate "PCF50633 regulator driver" + depends on MFD_PCF50633 + help + Say Y here to support the voltage regulators and convertors + on PCF50633 + endif diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 254d40c02ee..61b30c6ddec 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -11,5 +11,6 @@ obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o obj-$(CONFIG_REGULATOR_DA903X) += da903x.o +obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c new file mode 100644 index 00000000000..4cc85ec6e12 --- /dev/null +++ b/drivers/regulator/pcf50633-regulator.c @@ -0,0 +1,329 @@ +/* NXP PCF50633 PMIC Driver + * + * (C) 2006-2008 by Openmoko, Inc. + * Author: Balaji Rao + * All rights reserved. + * + * Broken down from monstrous PCF50633 driver mainly by + * Harald Welte and Andy Green and Werner Almesberger + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#define PCF50633_REGULATOR(_name, _id) \ + { \ + .name = _name, \ + .id = _id, \ + .ops = &pcf50633_regulator_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + } + +static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { + [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, + [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, + [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, + [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, + [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, + [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, + [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, + [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, + [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, + [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, + [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, +}; + +/* Bits from voltage value */ +static u8 auto_voltage_bits(unsigned int millivolts) +{ + if (millivolts < 1800) + return 0; + if (millivolts > 3800) + return 0xff; + + millivolts -= 625; + + return millivolts / 25; +} + +static u8 down_voltage_bits(unsigned int millivolts) +{ + if (millivolts < 625) + return 0; + else if (millivolts > 3000) + return 0xff; + + millivolts -= 625; + + return millivolts / 25; +} + +static u8 ldo_voltage_bits(unsigned int millivolts) +{ + if (millivolts < 900) + return 0; + else if (millivolts > 3600) + return 0x1f; + + millivolts -= 900; + return millivolts / 100; +} + +/* Obtain voltage value from bits */ +static unsigned int auto_voltage_value(u8 bits) +{ + if (bits < 0x2f) + return 0; + + return 625 + (bits * 25); +} + + +static unsigned int down_voltage_value(u8 bits) +{ + return 625 + (bits * 25); +} + + +static unsigned int ldo_voltage_value(u8 bits) +{ + bits &= 0x1f; + + return 900 + (bits * 100); +} + +static int pcf50633_regulator_set_voltage(struct regulator_dev *rdev, + int min_uV, int max_uV) +{ + struct pcf50633 *pcf; + int regulator_id, millivolts; + u8 volt_bits, regnr; + + pcf = rdev_get_drvdata(rdev); + + regulator_id = rdev_get_id(rdev); + if (regulator_id >= PCF50633_NUM_REGULATORS) + return -EINVAL; + + millivolts = min_uV / 1000; + + regnr = pcf50633_regulator_registers[regulator_id]; + + switch (regulator_id) { + case PCF50633_REGULATOR_AUTO: + volt_bits = auto_voltage_bits(millivolts); + break; + case PCF50633_REGULATOR_DOWN1: + volt_bits = down_voltage_bits(millivolts); + break; + case PCF50633_REGULATOR_DOWN2: + volt_bits = down_voltage_bits(millivolts); + break; + case PCF50633_REGULATOR_LDO1: + case PCF50633_REGULATOR_LDO2: + case PCF50633_REGULATOR_LDO3: + case PCF50633_REGULATOR_LDO4: + case PCF50633_REGULATOR_LDO5: + case PCF50633_REGULATOR_LDO6: + case PCF50633_REGULATOR_HCLDO: + volt_bits = ldo_voltage_bits(millivolts); + break; + default: + return -EINVAL; + } + + return pcf50633_reg_write(pcf, regnr, volt_bits); +} + +static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev) +{ + struct pcf50633 *pcf; + int regulator_id, millivolts, volt_bits; + u8 regnr; + + pcf = rdev_get_drvdata(rdev);; + + regulator_id = rdev_get_id(rdev); + if (regulator_id >= PCF50633_NUM_REGULATORS) + return -EINVAL; + + regnr = pcf50633_regulator_registers[regulator_id]; + + volt_bits = pcf50633_reg_read(pcf, regnr); + if (volt_bits < 0) + return -1; + + switch (regulator_id) { + case PCF50633_REGULATOR_AUTO: + millivolts = auto_voltage_value(volt_bits); + break; + case PCF50633_REGULATOR_DOWN1: + millivolts = down_voltage_value(volt_bits); + break; + case PCF50633_REGULATOR_DOWN2: + millivolts = down_voltage_value(volt_bits); + break; + case PCF50633_REGULATOR_LDO1: + case PCF50633_REGULATOR_LDO2: + case PCF50633_REGULATOR_LDO3: + case PCF50633_REGULATOR_LDO4: + case PCF50633_REGULATOR_LDO5: + case PCF50633_REGULATOR_LDO6: + case PCF50633_REGULATOR_HCLDO: + millivolts = ldo_voltage_value(volt_bits); + break; + default: + return -EINVAL; + } + + return millivolts * 1000; +} + +static int pcf50633_regulator_enable(struct regulator_dev *rdev) +{ + struct pcf50633 *pcf = rdev_get_drvdata(rdev); + int regulator_id; + u8 regnr; + + regulator_id = rdev_get_id(rdev); + if (regulator_id >= PCF50633_NUM_REGULATORS) + return -EINVAL; + + /* The *ENA register is always one after the *OUT register */ + regnr = pcf50633_regulator_registers[regulator_id] + 1; + + return pcf50633_reg_set_bit_mask(pcf, regnr, PCF50633_REGULATOR_ON, + PCF50633_REGULATOR_ON); +} + +static int pcf50633_regulator_disable(struct regulator_dev *rdev) +{ + struct pcf50633 *pcf = rdev_get_drvdata(rdev); + int regulator_id; + u8 regnr; + + regulator_id = rdev_get_id(rdev); + if (regulator_id >= PCF50633_NUM_REGULATORS) + return -EINVAL; + + /* the *ENA register is always one after the *OUT register */ + regnr = pcf50633_regulator_registers[regulator_id] + 1; + + return pcf50633_reg_set_bit_mask(pcf, regnr, + PCF50633_REGULATOR_ON, 0); +} + +static int pcf50633_regulator_is_enabled(struct regulator_dev *rdev) +{ + struct pcf50633 *pcf = rdev_get_drvdata(rdev); + int regulator_id = rdev_get_id(rdev); + u8 regnr; + + regulator_id = rdev_get_id(rdev); + if (regulator_id >= PCF50633_NUM_REGULATORS) + return -EINVAL; + + /* the *ENA register is always one after the *OUT register */ + regnr = pcf50633_regulator_registers[regulator_id] + 1; + + return pcf50633_reg_read(pcf, regnr) & PCF50633_REGULATOR_ON; +} + +static struct regulator_ops pcf50633_regulator_ops = { + .set_voltage = pcf50633_regulator_set_voltage, + .get_voltage = pcf50633_regulator_get_voltage, + .enable = pcf50633_regulator_enable, + .disable = pcf50633_regulator_disable, + .is_enabled = pcf50633_regulator_is_enabled, +}; + +static struct regulator_desc regulators[] = { + [PCF50633_REGULATOR_AUTO] = + PCF50633_REGULATOR("auto", PCF50633_REGULATOR_AUTO), + [PCF50633_REGULATOR_DOWN1] = + PCF50633_REGULATOR("down1", PCF50633_REGULATOR_DOWN1), + [PCF50633_REGULATOR_DOWN2] = + PCF50633_REGULATOR("down2", PCF50633_REGULATOR_DOWN2), + [PCF50633_REGULATOR_LDO1] = + PCF50633_REGULATOR("ldo1", PCF50633_REGULATOR_LDO1), + [PCF50633_REGULATOR_LDO2] = + PCF50633_REGULATOR("ldo2", PCF50633_REGULATOR_LDO2), + [PCF50633_REGULATOR_LDO3] = + PCF50633_REGULATOR("ldo3", PCF50633_REGULATOR_LDO3), + [PCF50633_REGULATOR_LDO4] = + PCF50633_REGULATOR("ldo4", PCF50633_REGULATOR_LDO4), + [PCF50633_REGULATOR_LDO5] = + PCF50633_REGULATOR("ldo5", PCF50633_REGULATOR_LDO5), + [PCF50633_REGULATOR_LDO6] = + PCF50633_REGULATOR("ldo6", PCF50633_REGULATOR_LDO6), + [PCF50633_REGULATOR_HCLDO] = + PCF50633_REGULATOR("hcldo", PCF50633_REGULATOR_HCLDO), + [PCF50633_REGULATOR_MEMLDO] = + PCF50633_REGULATOR("memldo", PCF50633_REGULATOR_MEMLDO), +}; + +static int __devinit pcf50633_regulator_probe(struct platform_device *pdev) +{ + struct regulator_dev *rdev; + struct pcf50633 *pcf; + + /* Already set by core driver */ + pcf = platform_get_drvdata(pdev); + + rdev = regulator_register(®ulators[pdev->id], &pdev->dev, pcf); + if (IS_ERR(rdev)) + return PTR_ERR(rdev); + + if (pcf->pdata->regulator_registered) + pcf->pdata->regulator_registered(pcf, pdev->id); + + return 0; +} + +static int __devexit pcf50633_regulator_remove(struct platform_device *pdev) +{ + struct regulator_dev *rdev = platform_get_drvdata(pdev); + + regulator_unregister(rdev); + + return 0; +} + +static struct platform_driver pcf50633_regulator_driver = { + .driver = { + .name = "pcf50633-regltr", + }, + .probe = pcf50633_regulator_probe, + .remove = __devexit_p(pcf50633_regulator_remove), +}; + +static int __init pcf50633_regulator_init(void) +{ + return platform_driver_register(&pcf50633_regulator_driver); +} +module_init(pcf50633_regulator_init); + +static void __exit pcf50633_regulator_exit(void) +{ + platform_driver_unregister(&pcf50633_regulator_driver); +} +module_exit(pcf50633_regulator_exit); + +MODULE_AUTHOR("Balaji Rao "); +MODULE_DESCRIPTION("PCF50633 regulator driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:pcf50633-regulator"); -- cgit v1.2.3 From d1fdb4f6fbb155af88363bc949a35daa11872d9f Mon Sep 17 00:00:00 2001 From: David Brownell Date: Fri, 9 Jan 2009 02:02:42 +0100 Subject: mfd: dm355 evm MMC/SD card detection Support card detect and writeprotect switches on DM355 EVM. Signed-off-by: David Brownell Signed-off-by: Kevin Hilman Signed-off-by: Samuel Ortiz --- drivers/mfd/dm355evm_msp.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers') diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c index 4214b3f7242..7ac12cb0be4 100644 --- a/drivers/mfd/dm355evm_msp.c +++ b/drivers/mfd/dm355evm_msp.c @@ -107,6 +107,9 @@ static const u8 msp_gpios[] = { MSP_GPIO(0, SWITCH1), MSP_GPIO(1, SWITCH1), MSP_GPIO(2, SWITCH1), MSP_GPIO(3, SWITCH1), MSP_GPIO(4, SWITCH1), + /* switches on MMC/SD sockets */ + MSP_GPIO(1, SDMMC), MSP_GPIO(2, SDMMC), /* mmc0 WP, nCD */ + MSP_GPIO(3, SDMMC), MSP_GPIO(4, SDMMC), /* mmc1 WP, nCD */ }; #define MSP_GPIO_REG(offset) (msp_gpios[(offset)] >> 3) @@ -304,6 +307,13 @@ static int add_children(struct i2c_client *client) gpio_export(gpio, false); } + /* MMC/SD inputs -- right after the last config input */ + if (client->dev.platform_data) { + void (*mmcsd_setup)(unsigned) = client->dev.platform_data; + + mmcsd_setup(dm355evm_msp_gpio.base + 8 + 5); + } + /* RTC is a 32 bit counter, no alarm */ if (msp_has_rtc()) { child = add_child(client, "rtc-dm355evm", -- cgit v1.2.3 From 98325f8f8e950818c306cbc224897a1dda471945 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 10 Jan 2009 16:59:53 +0100 Subject: mfd: Ensure sm501 GPIO pin mode is GPIO when configured When setting an GPIO to either input or output, we should ensure that the pin configuration elsewhere in the chip is set to GPIO in-case the initial setup has not been done correctly. Signed-off-by: Ben Dooks Signed-off-by: Samuel Ortiz --- drivers/mfd/sm501.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c index 170f9d47c2f..0e5761f1263 100644 --- a/drivers/mfd/sm501.c +++ b/drivers/mfd/sm501.c @@ -41,6 +41,7 @@ struct sm501_gpio_chip { struct gpio_chip gpio; struct sm501_gpio *ourgpio; /* to get back to parent. */ void __iomem *regbase; + void __iomem *control; /* address of control reg. */ }; struct sm501_gpio { @@ -908,6 +909,25 @@ static int sm501_gpio_get(struct gpio_chip *chip, unsigned offset) return result & 1UL; } +static void sm501_gpio_ensure_gpio(struct sm501_gpio_chip *smchip, + unsigned long bit) +{ + unsigned long ctrl; + + /* check and modify if this pin is not set as gpio. */ + + if (readl(smchip->control) & bit) { + dev_info(sm501_gpio_to_dev(smchip->ourgpio)->dev, + "changing mode of gpio, bit %08lx\n", bit); + + ctrl = readl(smchip->control); + ctrl &= ~bit; + writel(ctrl, smchip->control); + + sm501_sync_regs(sm501_gpio_to_dev(smchip->ourgpio)); + } +} + static void sm501_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { @@ -929,6 +949,8 @@ static void sm501_gpio_set(struct gpio_chip *chip, unsigned offset, int value) writel(val, regs); sm501_sync_regs(sm501_gpio_to_dev(smgpio)); + sm501_gpio_ensure_gpio(smchip, bit); + spin_unlock_irqrestore(&smgpio->lock, save); } @@ -941,8 +963,8 @@ static int sm501_gpio_input(struct gpio_chip *chip, unsigned offset) unsigned long save; unsigned long ddr; - dev_info(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d)\n", - __func__, chip, offset); + dev_dbg(sm501_gpio_to_dev(smgpio)->dev, "%s(%p,%d)\n", + __func__, chip, offset); spin_lock_irqsave(&smgpio->lock, save); @@ -950,6 +972,8 @@ static int sm501_gpio_input(struct gpio_chip *chip, unsigned offset) writel(ddr & ~bit, regs + SM501_GPIO_DDR_LOW); sm501_sync_regs(sm501_gpio_to_dev(smgpio)); + sm501_gpio_ensure_gpio(smchip, bit); + spin_unlock_irqrestore(&smgpio->lock, save); return 0; @@ -1012,9 +1036,11 @@ static int __devinit sm501_gpio_register_chip(struct sm501_devdata *sm, if (base > 0) base += 32; chip->regbase = gpio->regs + SM501_GPIO_DATA_HIGH; + chip->control = sm->regs + SM501_GPIO63_32_CONTROL; gchip->label = "SM501-HIGH"; } else { chip->regbase = gpio->regs + SM501_GPIO_DATA_LOW; + chip->control = sm->regs + SM501_GPIO31_0_CONTROL; gchip->label = "SM501-LOW"; } -- cgit v1.2.3 From b29c06ae96acc47e866f29d19075707f91df69c8 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Sun, 11 Jan 2009 01:21:48 +0100 Subject: mfd: Fix twl4030-core build Fixes: drivers/mfd/twl4030-core.c:657: error: implicit declaration of function 'cpu_is_omap2430' Not the nicest fix, but this should be improved by a better OMAP clock API implementation. Signed-off-by: Samuel Ortiz --- drivers/mfd/twl4030-core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c index b59c385cbc1..074b11ffbf4 100644 --- a/drivers/mfd/twl4030-core.c +++ b/drivers/mfd/twl4030-core.c @@ -38,6 +38,9 @@ #include #include +#ifdef CONFIG_ARM +#include +#endif /* * The TWL4030 "Triton 2" is one of a family of a multi-function "Power -- cgit v1.2.3