static void gta02_bl_set_intensity(int intensity)
{
struct pcf50633 *pcf = gta02_pcf;
int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
int ret;
intensity >>= 2;
/*
* One code path that leads here is from a kernel panic. Trying to turn
* the backlight on just gives us a nearly endless stream of complaints
* and accomplishes nothing. We can't win. Just give up.
*
* In the unlikely event that there's another path leading here while
* we're atomic, we print at least a warning.
*/
if (in_atomic()) {
printk(KERN_ERR
"gta02_bl_set_intensity called while atomic\n");
return;
}
if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
old_intensity = 0;
else
old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
if (intensity == old_intensity)
return;
/* We can't do this anywhere else */
pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);
/*
* The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
* if seen, you have to re-enable the LED unit
*/
if (!intensity || !old_intensity)
pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);
if (!intensity) /* illegal to set LEDOUT to 0 */
ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
2);
else
ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
intensity);
if (intensity)
pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);
}
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);
}
static void gta02_bl_set_intensity(int intensity)
{
struct pcf50633 *pcf = gta02_pcf;
int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
/* We map 8-bit intensity to 6-bit intensity in hardware. */
intensity >>= 2;
/*
* This can happen during, eg, print of panic on blanked console,
* but we can't service i2c without interrupts active, so abort.
*/
if (in_atomic()) {
printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n");
return;
}
old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
if (intensity == old_intensity)
return;
/* We can't do this anywhere else. */
pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);
if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
old_intensity = 0;
/*
* The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
* if seen, you have to re-enable the LED unit.
*/
if (!intensity || !old_intensity)
pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);
/* Illegal to set LEDOUT to 0. */
if (!intensity)
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2);
else
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
intensity);
if (intensity)
pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);
}
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);
}
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;
int charging_start = 1;
u8 mbcs2, chgmod;
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;
charging_start = 0;
}
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);
mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
else
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
mbc->usb_active = charging_start;
power_supply_changed(&mbc->usb);
return ret;
}
int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf,
int gpio, int regulator, int on)
{
u8 reg, val, mask;
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);
}
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 void pcf50633_mbc_charging_restart(struct work_struct *work)
{
struct pcf50633_mbc *mbc;
u8 mbcs2, chgmod;
mbc = container_of(work, struct pcf50633_mbc,
charging_restart_work.work);
mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
return;
pcf50633_reg_set_bit_mask(mbc->pcf, PCF50633_REG_MBCC1,
PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
mbc->usb_active = 1;
power_supply_changed(&mbc->usb);
dev_info(mbc->pcf->dev, "Charging restarted\n");
}
static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask)
{
u8 reg, bit;
int ret = 0, idx;
idx = irq >> 3;
reg = PCF50633_REG_INT1M + idx;
bit = 1 << (irq & 0x07);
pcf50633_reg_set_bit_mask(pcf, reg, bit, mask ? bit : 0);
mutex_lock(&pcf->lock);
if (mask)
pcf->mask_regs[idx] |= bit;
else
pcf->mask_regs[idx] &= ~bit;
mutex_unlock(&pcf->lock);
return ret;
}
static irqreturn_t pcf50633_irq(int irq, void *data)
{
struct pcf50633 *pcf = data;
int ret, i, j;
u8 pcf_int[5], chgstat;
/* 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;
}
/* defeat 8s death from lowsys on A5 */
pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN, 0x04);
/* 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] &= ~PCF50633_INT1_USBREM;
else
pcf_int[0] &= ~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] &= ~PCF50633_INT1_ADPREM;
else
pcf_int[0] &= ~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:
return IRQ_HANDLED;
}
static void gta02_pmu_force_shutdown(struct pcf50633 *pcf)
{
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_OOCSHDWN,
PCF50633_OOCSHDWN_GOSTDBY, PCF50633_OOCSHDWN_GOSTDBY);
}
static void gta02_poweroff(void)
{
pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN,
PCF50633_OOCSHDWN_GOSTDBY, PCF50633_OOCSHDWN_GOSTDBY);
}
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;
u8 mbcs2, chgmod;
unsigned int mbcc5;
if (ma >= 1000) {
bits = PCF50633_MBCC7_USB_1000mA;
ma = 1000;
} else if (ma >= 500) {
bits = PCF50633_MBCC7_USB_500mA;
ma = 500;
} else if (ma >= 100) {
bits = PCF50633_MBCC7_USB_100mA;
ma = 100;
} else {
bits = PCF50633_MBCC7_USB_SUSPEND;
ma = 0;
}
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);
/*
* We limit the charging current to be the USB current limit.
* The reason is that on pcf50633, when it enters PMU Standby mode,
* which it does when the device goes "off", the USB current limit
* reverts to the variant default. In at least one common case, that
* default is 500mA. By setting the charging current to be the same
* as the USB limit we set here before PMU standby, we enforce it only
* using the correct amount of current even when the USB current limit
* gets reset to the wrong thing
*/
if (mbc->pcf->pdata->charger_reference_current_ma) {
mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
if (mbcc5 > 255)
mbcc5 = 255;
pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
}
mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
/* If chgmod == BATFULL, setting chgena has no effect.
* Datasheet says we need to set resume instead but when autoresume is
* used resume doesn't work. Clear and set chgena instead.
*/
if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
else {
pcf50633_reg_clear_bits(pcf, PCF50633_REG_MBCC1,
PCF50633_MBCC1_CHGENA);
pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
}
power_supply_changed(mbc->usb);
return ret;
}
