+++ /dev/null
-/*
- * Copyright 2009 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- *
- * loosely based on an earlier driver that has
- * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
- *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License version 2 as published by the
- * Free Software Foundation.
- */
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/mutex.h>
-#include <linux/interrupt.h>
-#include <linux/spi/spi.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/mc13783.h>
-
-struct mc13783 {
- struct spi_device *spidev;
- struct mutex lock;
- int irq;
- int flags;
-
- irq_handler_t irqhandler[MC13783_NUM_IRQ];
- void *irqdata[MC13783_NUM_IRQ];
-
- /* XXX these should go as platformdata to the regulator subdevice */
- struct mc13783_regulator_init_data *regulators;
- int num_regulators;
-};
-
-#define MC13783_REG_REVISION 7
-#define MC13783_REG_ADC_0 43
-#define MC13783_REG_ADC_1 44
-#define MC13783_REG_ADC_2 45
-
-#define MC13783_IRQSTAT0 0
-#define MC13783_IRQSTAT0_ADCDONEI (1 << 0)
-#define MC13783_IRQSTAT0_ADCBISDONEI (1 << 1)
-#define MC13783_IRQSTAT0_TSI (1 << 2)
-#define MC13783_IRQSTAT0_WHIGHI (1 << 3)
-#define MC13783_IRQSTAT0_WLOWI (1 << 4)
-#define MC13783_IRQSTAT0_CHGDETI (1 << 6)
-#define MC13783_IRQSTAT0_CHGOVI (1 << 7)
-#define MC13783_IRQSTAT0_CHGREVI (1 << 8)
-#define MC13783_IRQSTAT0_CHGSHORTI (1 << 9)
-#define MC13783_IRQSTAT0_CCCVI (1 << 10)
-#define MC13783_IRQSTAT0_CHGCURRI (1 << 11)
-#define MC13783_IRQSTAT0_BPONI (1 << 12)
-#define MC13783_IRQSTAT0_LOBATLI (1 << 13)
-#define MC13783_IRQSTAT0_LOBATHI (1 << 14)
-#define MC13783_IRQSTAT0_UDPI (1 << 15)
-#define MC13783_IRQSTAT0_USBI (1 << 16)
-#define MC13783_IRQSTAT0_IDI (1 << 19)
-#define MC13783_IRQSTAT0_SE1I (1 << 21)
-#define MC13783_IRQSTAT0_CKDETI (1 << 22)
-#define MC13783_IRQSTAT0_UDMI (1 << 23)
-
-#define MC13783_IRQMASK0 1
-#define MC13783_IRQMASK0_ADCDONEM MC13783_IRQSTAT0_ADCDONEI
-#define MC13783_IRQMASK0_ADCBISDONEM MC13783_IRQSTAT0_ADCBISDONEI
-#define MC13783_IRQMASK0_TSM MC13783_IRQSTAT0_TSI
-#define MC13783_IRQMASK0_WHIGHM MC13783_IRQSTAT0_WHIGHI
-#define MC13783_IRQMASK0_WLOWM MC13783_IRQSTAT0_WLOWI
-#define MC13783_IRQMASK0_CHGDETM MC13783_IRQSTAT0_CHGDETI
-#define MC13783_IRQMASK0_CHGOVM MC13783_IRQSTAT0_CHGOVI
-#define MC13783_IRQMASK0_CHGREVM MC13783_IRQSTAT0_CHGREVI
-#define MC13783_IRQMASK0_CHGSHORTM MC13783_IRQSTAT0_CHGSHORTI
-#define MC13783_IRQMASK0_CCCVM MC13783_IRQSTAT0_CCCVI
-#define MC13783_IRQMASK0_CHGCURRM MC13783_IRQSTAT0_CHGCURRI
-#define MC13783_IRQMASK0_BPONM MC13783_IRQSTAT0_BPONI
-#define MC13783_IRQMASK0_LOBATLM MC13783_IRQSTAT0_LOBATLI
-#define MC13783_IRQMASK0_LOBATHM MC13783_IRQSTAT0_LOBATHI
-#define MC13783_IRQMASK0_UDPM MC13783_IRQSTAT0_UDPI
-#define MC13783_IRQMASK0_USBM MC13783_IRQSTAT0_USBI
-#define MC13783_IRQMASK0_IDM MC13783_IRQSTAT0_IDI
-#define MC13783_IRQMASK0_SE1M MC13783_IRQSTAT0_SE1I
-#define MC13783_IRQMASK0_CKDETM MC13783_IRQSTAT0_CKDETI
-#define MC13783_IRQMASK0_UDMM MC13783_IRQSTAT0_UDMI
-
-#define MC13783_IRQSTAT1 3
-#define MC13783_IRQSTAT1_1HZI (1 << 0)
-#define MC13783_IRQSTAT1_TODAI (1 << 1)
-#define MC13783_IRQSTAT1_ONOFD1I (1 << 3)
-#define MC13783_IRQSTAT1_ONOFD2I (1 << 4)
-#define MC13783_IRQSTAT1_ONOFD3I (1 << 5)
-#define MC13783_IRQSTAT1_SYSRSTI (1 << 6)
-#define MC13783_IRQSTAT1_RTCRSTI (1 << 7)
-#define MC13783_IRQSTAT1_PCI (1 << 8)
-#define MC13783_IRQSTAT1_WARMI (1 << 9)
-#define MC13783_IRQSTAT1_MEMHLDI (1 << 10)
-#define MC13783_IRQSTAT1_PWRRDYI (1 << 11)
-#define MC13783_IRQSTAT1_THWARNLI (1 << 12)
-#define MC13783_IRQSTAT1_THWARNHI (1 << 13)
-#define MC13783_IRQSTAT1_CLKI (1 << 14)
-#define MC13783_IRQSTAT1_SEMAFI (1 << 15)
-#define MC13783_IRQSTAT1_MC2BI (1 << 17)
-#define MC13783_IRQSTAT1_HSDETI (1 << 18)
-#define MC13783_IRQSTAT1_HSLI (1 << 19)
-#define MC13783_IRQSTAT1_ALSPTHI (1 << 20)
-#define MC13783_IRQSTAT1_AHSSHORTI (1 << 21)
-
-#define MC13783_IRQMASK1 4
-#define MC13783_IRQMASK1_1HZM MC13783_IRQSTAT1_1HZI
-#define MC13783_IRQMASK1_TODAM MC13783_IRQSTAT1_TODAI
-#define MC13783_IRQMASK1_ONOFD1M MC13783_IRQSTAT1_ONOFD1I
-#define MC13783_IRQMASK1_ONOFD2M MC13783_IRQSTAT1_ONOFD2I
-#define MC13783_IRQMASK1_ONOFD3M MC13783_IRQSTAT1_ONOFD3I
-#define MC13783_IRQMASK1_SYSRSTM MC13783_IRQSTAT1_SYSRSTI
-#define MC13783_IRQMASK1_RTCRSTM MC13783_IRQSTAT1_RTCRSTI
-#define MC13783_IRQMASK1_PCM MC13783_IRQSTAT1_PCI
-#define MC13783_IRQMASK1_WARMM MC13783_IRQSTAT1_WARMI
-#define MC13783_IRQMASK1_MEMHLDM MC13783_IRQSTAT1_MEMHLDI
-#define MC13783_IRQMASK1_PWRRDYM MC13783_IRQSTAT1_PWRRDYI
-#define MC13783_IRQMASK1_THWARNLM MC13783_IRQSTAT1_THWARNLI
-#define MC13783_IRQMASK1_THWARNHM MC13783_IRQSTAT1_THWARNHI
-#define MC13783_IRQMASK1_CLKM MC13783_IRQSTAT1_CLKI
-#define MC13783_IRQMASK1_SEMAFM MC13783_IRQSTAT1_SEMAFI
-#define MC13783_IRQMASK1_MC2BM MC13783_IRQSTAT1_MC2BI
-#define MC13783_IRQMASK1_HSDETM MC13783_IRQSTAT1_HSDETI
-#define MC13783_IRQMASK1_HSLM MC13783_IRQSTAT1_HSLI
-#define MC13783_IRQMASK1_ALSPTHM MC13783_IRQSTAT1_ALSPTHI
-#define MC13783_IRQMASK1_AHSSHORTM MC13783_IRQSTAT1_AHSSHORTI
-
-#define MC13783_ADC1 44
-#define MC13783_ADC1_ADEN (1 << 0)
-#define MC13783_ADC1_RAND (1 << 1)
-#define MC13783_ADC1_ADSEL (1 << 3)
-#define MC13783_ADC1_ASC (1 << 20)
-#define MC13783_ADC1_ADTRIGIGN (1 << 21)
-
-#define MC13783_NUMREGS 0x3f
-
-void mc13783_lock(struct mc13783 *mc13783)
-{
- if (!mutex_trylock(&mc13783->lock)) {
- dev_dbg(&mc13783->spidev->dev, "wait for %s from %pf\n",
- __func__, __builtin_return_address(0));
-
- mutex_lock(&mc13783->lock);
- }
- dev_dbg(&mc13783->spidev->dev, "%s from %pf\n",
- __func__, __builtin_return_address(0));
-}
-EXPORT_SYMBOL(mc13783_lock);
-
-void mc13783_unlock(struct mc13783 *mc13783)
-{
- dev_dbg(&mc13783->spidev->dev, "%s from %pf\n",
- __func__, __builtin_return_address(0));
- mutex_unlock(&mc13783->lock);
-}
-EXPORT_SYMBOL(mc13783_unlock);
-
-#define MC13783_REGOFFSET_SHIFT 25
-int mc13783_reg_read(struct mc13783 *mc13783, unsigned int offset, u32 *val)
-{
- struct spi_transfer t;
- struct spi_message m;
- int ret;
-
- BUG_ON(!mutex_is_locked(&mc13783->lock));
-
- if (offset > MC13783_NUMREGS)
- return -EINVAL;
-
- *val = offset << MC13783_REGOFFSET_SHIFT;
-
- memset(&t, 0, sizeof(t));
-
- t.tx_buf = val;
- t.rx_buf = val;
- t.len = sizeof(u32);
-
- spi_message_init(&m);
- spi_message_add_tail(&t, &m);
-
- ret = spi_sync(mc13783->spidev, &m);
-
- /* error in message.status implies error return from spi_sync */
- BUG_ON(!ret && m.status);
-
- if (ret)
- return ret;
-
- *val &= 0xffffff;
-
- dev_vdbg(&mc13783->spidev->dev, "[0x%02x] -> 0x%06x\n", offset, *val);
-
- return 0;
-}
-EXPORT_SYMBOL(mc13783_reg_read);
-
-int mc13783_reg_write(struct mc13783 *mc13783, unsigned int offset, u32 val)
-{
- u32 buf;
- struct spi_transfer t;
- struct spi_message m;
- int ret;
-
- BUG_ON(!mutex_is_locked(&mc13783->lock));
-
- dev_vdbg(&mc13783->spidev->dev, "[0x%02x] <- 0x%06x\n", offset, val);
-
- if (offset > MC13783_NUMREGS || val > 0xffffff)
- return -EINVAL;
-
- buf = 1 << 31 | offset << MC13783_REGOFFSET_SHIFT | val;
-
- memset(&t, 0, sizeof(t));
-
- t.tx_buf = &buf;
- t.rx_buf = &buf;
- t.len = sizeof(u32);
-
- spi_message_init(&m);
- spi_message_add_tail(&t, &m);
-
- ret = spi_sync(mc13783->spidev, &m);
-
- BUG_ON(!ret && m.status);
-
- if (ret)
- return ret;
-
- return 0;
-}
-EXPORT_SYMBOL(mc13783_reg_write);
-
-int mc13783_reg_rmw(struct mc13783 *mc13783, unsigned int offset,
- u32 mask, u32 val)
-{
- int ret;
- u32 valread;
-
- BUG_ON(val & ~mask);
-
- ret = mc13783_reg_read(mc13783, offset, &valread);
- if (ret)
- return ret;
-
- valread = (valread & ~mask) | val;
-
- return mc13783_reg_write(mc13783, offset, valread);
-}
-EXPORT_SYMBOL(mc13783_reg_rmw);
-
-int mc13783_get_flags(struct mc13783 *mc13783)
-{
- return mc13783->flags;
-}
-EXPORT_SYMBOL(mc13783_get_flags);
-
-int mc13783_irq_mask(struct mc13783 *mc13783, int irq)
-{
- int ret;
- unsigned int offmask = irq < 24 ? MC13783_IRQMASK0 : MC13783_IRQMASK1;
- u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
- u32 mask;
-
- if (irq < 0 || irq >= MC13783_NUM_IRQ)
- return -EINVAL;
-
- ret = mc13783_reg_read(mc13783, offmask, &mask);
- if (ret)
- return ret;
-
- if (mask & irqbit)
- /* already masked */
- return 0;
-
- return mc13783_reg_write(mc13783, offmask, mask | irqbit);
-}
-EXPORT_SYMBOL(mc13783_irq_mask);
-
-int mc13783_irq_unmask(struct mc13783 *mc13783, int irq)
-{
- int ret;
- unsigned int offmask = irq < 24 ? MC13783_IRQMASK0 : MC13783_IRQMASK1;
- u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
- u32 mask;
-
- if (irq < 0 || irq >= MC13783_NUM_IRQ)
- return -EINVAL;
-
- ret = mc13783_reg_read(mc13783, offmask, &mask);
- if (ret)
- return ret;
-
- if (!(mask & irqbit))
- /* already unmasked */
- return 0;
-
- return mc13783_reg_write(mc13783, offmask, mask & ~irqbit);
-}
-EXPORT_SYMBOL(mc13783_irq_unmask);
-
-int mc13783_irq_status(struct mc13783 *mc13783, int irq,
- int *enabled, int *pending)
-{
- int ret;
- unsigned int offmask = irq < 24 ? MC13783_IRQMASK0 : MC13783_IRQMASK1;
- unsigned int offstat = irq < 24 ? MC13783_IRQSTAT0 : MC13783_IRQSTAT1;
- u32 irqbit = 1 << (irq < 24 ? irq : irq - 24);
-
- if (irq < 0 || irq >= MC13783_NUM_IRQ)
- return -EINVAL;
-
- if (enabled) {
- u32 mask;
-
- ret = mc13783_reg_read(mc13783, offmask, &mask);
- if (ret)
- return ret;
-
- *enabled = mask & irqbit;
- }
-
- if (pending) {
- u32 stat;
-
- ret = mc13783_reg_read(mc13783, offstat, &stat);
- if (ret)
- return ret;
-
- *pending = stat & irqbit;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(mc13783_irq_status);
-
-int mc13783_irq_ack(struct mc13783 *mc13783, int irq)
-{
- unsigned int offstat = irq < 24 ? MC13783_IRQSTAT0 : MC13783_IRQSTAT1;
- unsigned int val = 1 << (irq < 24 ? irq : irq - 24);
-
- BUG_ON(irq < 0 || irq >= MC13783_NUM_IRQ);
-
- return mc13783_reg_write(mc13783, offstat, val);
-}
-EXPORT_SYMBOL(mc13783_irq_ack);
-
-int mc13783_irq_request_nounmask(struct mc13783 *mc13783, int irq,
- irq_handler_t handler, const char *name, void *dev)
-{
- BUG_ON(!mutex_is_locked(&mc13783->lock));
- BUG_ON(!handler);
-
- if (irq < 0 || irq >= MC13783_NUM_IRQ)
- return -EINVAL;
-
- if (mc13783->irqhandler[irq])
- return -EBUSY;
-
- mc13783->irqhandler[irq] = handler;
- mc13783->irqdata[irq] = dev;
-
- return 0;
-}
-EXPORT_SYMBOL(mc13783_irq_request_nounmask);
-
-int mc13783_irq_request(struct mc13783 *mc13783, int irq,
- irq_handler_t handler, const char *name, void *dev)
-{
- int ret;
-
- ret = mc13783_irq_request_nounmask(mc13783, irq, handler, name, dev);
- if (ret)
- return ret;
-
- ret = mc13783_irq_unmask(mc13783, irq);
- if (ret) {
- mc13783->irqhandler[irq] = NULL;
- mc13783->irqdata[irq] = NULL;
- return ret;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(mc13783_irq_request);
-
-int mc13783_irq_free(struct mc13783 *mc13783, int irq, void *dev)
-{
- int ret;
- BUG_ON(!mutex_is_locked(&mc13783->lock));
-
- if (irq < 0 || irq >= MC13783_NUM_IRQ || !mc13783->irqhandler[irq] ||
- mc13783->irqdata[irq] != dev)
- return -EINVAL;
-
- ret = mc13783_irq_mask(mc13783, irq);
- if (ret)
- return ret;
-
- mc13783->irqhandler[irq] = NULL;
- mc13783->irqdata[irq] = NULL;
-
- return 0;
-}
-EXPORT_SYMBOL(mc13783_irq_free);
-
-static inline irqreturn_t mc13783_irqhandler(struct mc13783 *mc13783, int irq)
-{
- return mc13783->irqhandler[irq](irq, mc13783->irqdata[irq]);
-}
-
-/*
- * returns: number of handled irqs or negative error
- * locking: holds mc13783->lock
- */
-static int mc13783_irq_handle(struct mc13783 *mc13783,
- unsigned int offstat, unsigned int offmask, int baseirq)
-{
- u32 stat, mask;
- int ret = mc13783_reg_read(mc13783, offstat, &stat);
- int num_handled = 0;
-
- if (ret)
- return ret;
-
- ret = mc13783_reg_read(mc13783, offmask, &mask);
- if (ret)
- return ret;
-
- while (stat & ~mask) {
- int irq = __ffs(stat & ~mask);
-
- stat &= ~(1 << irq);
-
- if (likely(mc13783->irqhandler[baseirq + irq])) {
- irqreturn_t handled;
-
- handled = mc13783_irqhandler(mc13783, baseirq + irq);
- if (handled == IRQ_HANDLED)
- num_handled++;
- } else {
- dev_err(&mc13783->spidev->dev,
- "BUG: irq %u but no handler\n",
- baseirq + irq);
-
- mask |= 1 << irq;
-
- ret = mc13783_reg_write(mc13783, offmask, mask);
- }
- }
-
- return num_handled;
-}
-
-static irqreturn_t mc13783_irq_thread(int irq, void *data)
-{
- struct mc13783 *mc13783 = data;
- irqreturn_t ret;
- int handled = 0;
-
- mc13783_lock(mc13783);
-
- ret = mc13783_irq_handle(mc13783, MC13783_IRQSTAT0,
- MC13783_IRQMASK0, MC13783_IRQ_ADCDONE);
- if (ret > 0)
- handled = 1;
-
- ret = mc13783_irq_handle(mc13783, MC13783_IRQSTAT1,
- MC13783_IRQMASK1, MC13783_IRQ_1HZ);
- if (ret > 0)
- handled = 1;
-
- mc13783_unlock(mc13783);
-
- return IRQ_RETVAL(handled);
-}
-
-#define MC13783_ADC1_CHAN0_SHIFT 5
-#define MC13783_ADC1_CHAN1_SHIFT 8
-
-struct mc13783_adcdone_data {
- struct mc13783 *mc13783;
- struct completion done;
-};
-
-static irqreturn_t mc13783_handler_adcdone(int irq, void *data)
-{
- struct mc13783_adcdone_data *adcdone_data = data;
-
- mc13783_irq_ack(adcdone_data->mc13783, irq);
-
- complete_all(&adcdone_data->done);
-
- return IRQ_HANDLED;
-}
-
-#define MC13783_ADC_WORKING (1 << 16)
-
-int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode,
- unsigned int channel, unsigned int *sample)
-{
- u32 adc0, adc1, old_adc0;
- int i, ret;
- struct mc13783_adcdone_data adcdone_data = {
- .mc13783 = mc13783,
- };
- init_completion(&adcdone_data.done);
-
- dev_dbg(&mc13783->spidev->dev, "%s\n", __func__);
-
- mc13783_lock(mc13783);
-
- if (mc13783->flags & MC13783_ADC_WORKING) {
- ret = -EBUSY;
- goto out;
- }
-
- mc13783->flags |= MC13783_ADC_WORKING;
-
- mc13783_reg_read(mc13783, MC13783_ADC0, &old_adc0);
-
- adc0 = MC13783_ADC0_ADINC1 | MC13783_ADC0_ADINC2;
- adc1 = MC13783_ADC1_ADEN | MC13783_ADC1_ADTRIGIGN | MC13783_ADC1_ASC;
-
- if (channel > 7)
- adc1 |= MC13783_ADC1_ADSEL;
-
- switch (mode) {
- case MC13783_ADC_MODE_TS:
- adc0 |= MC13783_ADC0_ADREFEN | MC13783_ADC0_TSMOD0 |
- MC13783_ADC0_TSMOD1;
- adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT;
- break;
-
- case MC13783_ADC_MODE_SINGLE_CHAN:
- adc0 |= old_adc0 & MC13783_ADC0_TSMOD_MASK;
- adc1 |= (channel & 0x7) << MC13783_ADC1_CHAN0_SHIFT;
- adc1 |= MC13783_ADC1_RAND;
- break;
-
- case MC13783_ADC_MODE_MULT_CHAN:
- adc0 |= old_adc0 & MC13783_ADC0_TSMOD_MASK;
- adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT;
- break;
-
- default:
- mc13783_unlock(mc13783);
- return -EINVAL;
- }
-
- dev_dbg(&mc13783->spidev->dev, "%s: request irq\n", __func__);
- mc13783_irq_request(mc13783, MC13783_IRQ_ADCDONE,
- mc13783_handler_adcdone, __func__, &adcdone_data);
- mc13783_irq_ack(mc13783, MC13783_IRQ_ADCDONE);
-
- mc13783_reg_write(mc13783, MC13783_REG_ADC_0, adc0);
- mc13783_reg_write(mc13783, MC13783_REG_ADC_1, adc1);
-
- mc13783_unlock(mc13783);
-
- ret = wait_for_completion_interruptible_timeout(&adcdone_data.done, HZ);
-
- if (!ret)
- ret = -ETIMEDOUT;
-
- mc13783_lock(mc13783);
-
- mc13783_irq_free(mc13783, MC13783_IRQ_ADCDONE, &adcdone_data);
-
- if (ret > 0)
- for (i = 0; i < 4; ++i) {
- ret = mc13783_reg_read(mc13783,
- MC13783_REG_ADC_2, &sample[i]);
- if (ret)
- break;
- }
-
- if (mode == MC13783_ADC_MODE_TS)
- /* restore TSMOD */
- mc13783_reg_write(mc13783, MC13783_REG_ADC_0, old_adc0);
-
- mc13783->flags &= ~MC13783_ADC_WORKING;
-out:
- mc13783_unlock(mc13783);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(mc13783_adc_do_conversion);
-
-static int mc13783_add_subdevice_pdata(struct mc13783 *mc13783,
- const char *name, void *pdata, size_t pdata_size)
-{
- struct mfd_cell cell = {
- .name = name,
- .platform_data = pdata,
- .data_size = pdata_size,
- };
-
- return mfd_add_devices(&mc13783->spidev->dev, -1, &cell, 1, NULL, 0);
-}
-
-static int mc13783_add_subdevice(struct mc13783 *mc13783, const char *name)
-{
- return mc13783_add_subdevice_pdata(mc13783, name, NULL, 0);
-}
-
-static int mc13783_check_revision(struct mc13783 *mc13783)
-{
- u32 rev_id, rev1, rev2, finid, icid;
-
- mc13783_reg_read(mc13783, MC13783_REG_REVISION, &rev_id);
-
- rev1 = (rev_id & 0x018) >> 3;
- rev2 = (rev_id & 0x007);
- icid = (rev_id & 0x01C0) >> 6;
- finid = (rev_id & 0x01E00) >> 9;
-
- /* Ver 0.2 is actually 3.2a. Report as 3.2 */
- if ((rev1 == 0) && (rev2 == 2))
- rev1 = 3;
-
- if (rev1 == 0 || icid != 2) {
- dev_err(&mc13783->spidev->dev, "No MC13783 detected.\n");
- return -ENODEV;
- }
-
- dev_info(&mc13783->spidev->dev,
- "MC13783 Rev %d.%d FinVer %x detected\n",
- rev1, rev2, finid);
-
- return 0;
-}
-
-static int mc13783_probe(struct spi_device *spi)
-{
- struct mc13783 *mc13783;
- struct mc13783_platform_data *pdata = dev_get_platdata(&spi->dev);
- int ret;
-
- mc13783 = kzalloc(sizeof(*mc13783), GFP_KERNEL);
- if (!mc13783)
- return -ENOMEM;
-
- dev_set_drvdata(&spi->dev, mc13783);
- spi->mode = SPI_MODE_0 | SPI_CS_HIGH;
- spi->bits_per_word = 32;
- spi_setup(spi);
-
- mc13783->spidev = spi;
-
- mutex_init(&mc13783->lock);
- mc13783_lock(mc13783);
-
- ret = mc13783_check_revision(mc13783);
- if (ret)
- goto err_revision;
-
- /* mask all irqs */
- ret = mc13783_reg_write(mc13783, MC13783_IRQMASK0, 0x00ffffff);
- if (ret)
- goto err_mask;
-
- ret = mc13783_reg_write(mc13783, MC13783_IRQMASK1, 0x00ffffff);
- if (ret)
- goto err_mask;
-
- ret = request_threaded_irq(spi->irq, NULL, mc13783_irq_thread,
- IRQF_ONESHOT | IRQF_TRIGGER_HIGH, "mc13783", mc13783);
-
- if (ret) {
-err_mask:
-err_revision:
- mutex_unlock(&mc13783->lock);
- dev_set_drvdata(&spi->dev, NULL);
- kfree(mc13783);
- return ret;
- }
-
- /* This should go away (BEGIN) */
- if (pdata) {
- mc13783->flags = pdata->flags;
- mc13783->regulators = pdata->regulators;
- mc13783->num_regulators = pdata->num_regulators;
- }
- /* This should go away (END) */
-
- mc13783_unlock(mc13783);
-
- if (pdata->flags & MC13783_USE_ADC)
- mc13783_add_subdevice(mc13783, "mc13783-adc");
-
- if (pdata->flags & MC13783_USE_CODEC)
- mc13783_add_subdevice(mc13783, "mc13783-codec");
-
- if (pdata->flags & MC13783_USE_REGULATOR) {
- struct mc13783_regulator_platform_data regulator_pdata = {
- .num_regulators = pdata->num_regulators,
- .regulators = pdata->regulators,
- };
-
- mc13783_add_subdevice_pdata(mc13783, "mc13783-regulator",
- ®ulator_pdata, sizeof(regulator_pdata));
- }
-
- if (pdata->flags & MC13783_USE_RTC)
- mc13783_add_subdevice(mc13783, "mc13783-rtc");
-
- if (pdata->flags & MC13783_USE_TOUCHSCREEN)
- mc13783_add_subdevice(mc13783, "mc13783-ts");
-
- if (pdata->flags & MC13783_USE_LED)
- mc13783_add_subdevice_pdata(mc13783, "mc13783-led",
- pdata->leds, sizeof(*pdata->leds));
-
- return 0;
-}
-
-static int __devexit mc13783_remove(struct spi_device *spi)
-{
- struct mc13783 *mc13783 = dev_get_drvdata(&spi->dev);
-
- free_irq(mc13783->spidev->irq, mc13783);
-
- mfd_remove_devices(&spi->dev);
-
- return 0;
-}
-
-static struct spi_driver mc13783_driver = {
- .driver = {
- .name = "mc13783",
- .bus = &spi_bus_type,
- .owner = THIS_MODULE,
- },
- .probe = mc13783_probe,
- .remove = __devexit_p(mc13783_remove),
-};
-
-static int __init mc13783_init(void)
-{
- return spi_register_driver(&mc13783_driver);
-}
-subsys_initcall(mc13783_init);
-
-static void __exit mc13783_exit(void)
-{
- spi_unregister_driver(&mc13783_driver);
-}
-module_exit(mc13783_exit);
-
-MODULE_DESCRIPTION("Core driver for Freescale MC13783 PMIC");
-MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
-MODULE_LICENSE("GPL v2");
projects / mv-sheeva.git / blobdiff