[PATCH 06/10] mfd: menelaus: Limit the usage of the_menelaus

From: Felipe Balbi
Date: Mon Dec 16 2013 - 19:09:56 EST

Pass a menelaus_chip pointer as argument to most functions so we can
minimize the usage of the global the_menelaus pointer. This will
help later getting of the_menelaus altogether.

Tested-by: Aaro Koskinen <aaro.koskinen@xxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/mfd/menelaus.c | 420 ++++++++++++++++++++++++++-----------------------
1 file changed, 222 insertions(+), 198 deletions(-)

diff --git a/drivers/mfd/menelaus.c b/drivers/mfd/menelaus.c
index d3e3022..ae3209d 100644
--- a/drivers/mfd/menelaus.c
+++ b/drivers/mfd/menelaus.c
@@ -177,9 +177,9 @@ struct menelaus_chip {

static struct menelaus_chip *the_menelaus;

-static int menelaus_write_reg(int reg, u8 value)
+static int menelaus_write_reg(struct menelaus_chip *m, int reg, u8 value)
{
- int val = i2c_smbus_write_byte_data(the_menelaus->client, reg, value);
+ int val = i2c_smbus_write_byte_data(m->client, reg, value);

if (val < 0) {
pr_err(DRIVER_NAME ": write error");
@@ -189,9 +189,9 @@ static int menelaus_write_reg(int reg, u8 value)
return 0;
}

-static int menelaus_read_reg(int reg)
+static int menelaus_read_reg(struct menelaus_chip *m, int reg)
{
- int val = i2c_smbus_read_byte_data(the_menelaus->client, reg);
+ int val = i2c_smbus_read_byte_data(m->client, reg);

if (val < 0)
pr_err(DRIVER_NAME ": read error");
@@ -199,65 +199,65 @@ static int menelaus_read_reg(int reg)
return val;
}

-static int menelaus_enable_irq(int irq)
+static int menelaus_enable_irq(struct menelaus_chip *m, int irq)
{
if (irq > 7) {
irq -= 8;
- the_menelaus->mask2 &= ~(1 << irq);
- return menelaus_write_reg(MENELAUS_INT_MASK2,
- the_menelaus->mask2);
+ m->mask2 &= ~(1 << irq);
+ return menelaus_write_reg(m, MENELAUS_INT_MASK2,
+ m->mask2);
} else {
- the_menelaus->mask1 &= ~(1 << irq);
- return menelaus_write_reg(MENELAUS_INT_MASK1,
- the_menelaus->mask1);
+ m->mask1 &= ~(1 << irq);
+ return menelaus_write_reg(m, MENELAUS_INT_MASK1,
+ m->mask1);
}
}

-static int menelaus_disable_irq(int irq)
+static int menelaus_disable_irq(struct menelaus_chip *m, int irq)
{
if (irq > 7) {
irq -= 8;
- the_menelaus->mask2 |= (1 << irq);
- return menelaus_write_reg(MENELAUS_INT_MASK2,
- the_menelaus->mask2);
+ m->mask2 |= (1 << irq);
+ return menelaus_write_reg(m, MENELAUS_INT_MASK2,
+ m->mask2);
} else {
- the_menelaus->mask1 |= (1 << irq);
- return menelaus_write_reg(MENELAUS_INT_MASK1,
- the_menelaus->mask1);
+ m->mask1 |= (1 << irq);
+ return menelaus_write_reg(m, MENELAUS_INT_MASK1,
+ m->mask1);
}
}

-static int menelaus_ack_irq(int irq)
+static int menelaus_ack_irq(struct menelaus_chip *m, int irq)
{
if (irq > 7)
- return menelaus_write_reg(MENELAUS_INT_ACK2, 1 << (irq - 8));
+ return menelaus_write_reg(m, MENELAUS_INT_ACK2, 1 << (irq - 8));
else
- return menelaus_write_reg(MENELAUS_INT_ACK1, 1 << irq);
+ return menelaus_write_reg(m, MENELAUS_INT_ACK1, 1 << irq);
}

/* Adds a handler for an interrupt. Does not run in interrupt context */
-static int menelaus_add_irq_work(int irq,
+static int menelaus_add_irq_work(struct menelaus_chip *m, int irq,
void (*handler)(struct menelaus_chip *))
{
int ret = 0;

- mutex_lock(&the_menelaus->lock);
- the_menelaus->handlers[irq] = handler;
- ret = menelaus_enable_irq(irq);
- mutex_unlock(&the_menelaus->lock);
+ mutex_lock(&m->lock);
+ m->handlers[irq] = handler;
+ ret = menelaus_enable_irq(m, irq);
+ mutex_unlock(&m->lock);

return ret;
}

/* Removes handler for an interrupt */
-static int menelaus_remove_irq_work(int irq)
+static int menelaus_remove_irq_work(struct menelaus_chip *m, int irq)
{
int ret = 0;

- mutex_lock(&the_menelaus->lock);
- ret = menelaus_disable_irq(irq);
- the_menelaus->handlers[irq] = NULL;
- mutex_unlock(&the_menelaus->lock);
+ mutex_lock(&m->lock);
+ ret = menelaus_disable_irq(m, irq);
+ m->handlers[irq] = NULL;
+ mutex_unlock(&m->lock);

return ret;
}
@@ -268,12 +268,12 @@ static int menelaus_remove_irq_work(int irq)
* in each slot. In this case the cards are not seen by menelaus.
* FIXME: Add handling for D1 too
*/
-static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw)
+static void menelaus_mmc_cd_work(struct menelaus_chip *m)
{
int reg;
unsigned char card_mask = 0;

- reg = menelaus_read_reg(MENELAUS_MCT_PIN_ST);
+ reg = menelaus_read_reg(m, MENELAUS_MCT_PIN_ST);
if (reg < 0)
return;

@@ -283,8 +283,8 @@ static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw)
if (!(reg & 0x2))
card_mask |= MCT_PIN_ST_S2_CD_ST;

- if (menelaus_hw->mmc_callback)
- menelaus_hw->mmc_callback(menelaus_hw->mmc_callback_data,
+ if (m->mmc_callback)
+ m->mmc_callback(m->mmc_callback_data,
card_mask);
}

@@ -293,14 +293,16 @@ static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw)
*/
int menelaus_set_mmc_opendrain(int slot, int enable)
{
+ struct menelaus_chip *m = the_menelaus;
int ret, val;

if (slot != 1 && slot != 2)
return -EINVAL;
- mutex_lock(&the_menelaus->lock);
- ret = menelaus_read_reg(MENELAUS_MCT_CTRL1);
+
+ mutex_lock(&m->lock);
+ ret = menelaus_read_reg(m, MENELAUS_MCT_CTRL1);
if (ret < 0) {
- mutex_unlock(&the_menelaus->lock);
+ mutex_unlock(&m->lock);
return ret;
}
val = ret;
@@ -315,8 +317,8 @@ int menelaus_set_mmc_opendrain(int slot, int enable)
else
val &= ~MCT_CTRL1_S2_CMD_OD;
}
- ret = menelaus_write_reg(MENELAUS_MCT_CTRL1, val);
- mutex_unlock(&the_menelaus->lock);
+ ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL1, val);
+ mutex_unlock(&m->lock);

return ret;
}
@@ -324,10 +326,12 @@ EXPORT_SYMBOL(menelaus_set_mmc_opendrain);

int menelaus_set_slot_sel(int enable)
{
+ struct menelaus_chip *m = the_menelaus;
int ret;

- mutex_lock(&the_menelaus->lock);
- ret = menelaus_read_reg(MENELAUS_GPIO_CTRL);
+ mutex_lock(&m->lock);
+
+ ret = menelaus_read_reg(m, MENELAUS_GPIO_CTRL);
if (ret < 0)
goto out;
ret |= GPIO2_DIR_INPUT;
@@ -335,15 +339,16 @@ int menelaus_set_slot_sel(int enable)
ret |= GPIO_CTRL_SLOTSELEN;
else
ret &= ~GPIO_CTRL_SLOTSELEN;
- ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret);
+ ret = menelaus_write_reg(m, MENELAUS_GPIO_CTRL, ret);
out:
- mutex_unlock(&the_menelaus->lock);
+ mutex_unlock(&m->lock);
return ret;
}
EXPORT_SYMBOL(menelaus_set_slot_sel);

int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en)
{
+ struct menelaus_chip *m = the_menelaus;
int ret, val;

if (slot != 1 && slot != 2)
@@ -351,9 +356,9 @@ int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en)
if (power >= 3)
return -EINVAL;

- mutex_lock(&the_menelaus->lock);
+ mutex_lock(&m->lock);

- ret = menelaus_read_reg(MENELAUS_MCT_CTRL2);
+ ret = menelaus_read_reg(m, MENELAUS_MCT_CTRL2);
if (ret < 0)
goto out;
val = ret;
@@ -368,11 +373,11 @@ int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en)
else
val &= ~(MCT_CTRL2_S2CD_BUFEN | MCT_CTRL2_S2CD_BEN);
}
- ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, val);
+ ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL2, val);
if (ret < 0)
goto out;

- ret = menelaus_read_reg(MENELAUS_MCT_CTRL3);
+ ret = menelaus_read_reg(m, MENELAUS_MCT_CTRL3);
if (ret < 0)
goto out;
val = ret;
@@ -388,18 +393,18 @@ int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en)
val |= MCT_CTRL3_SLOT2_EN;
else
val &= ~MCT_CTRL3_SLOT2_EN;
- b = menelaus_read_reg(MENELAUS_MCT_CTRL2);
+ b = menelaus_read_reg(m, MENELAUS_MCT_CTRL2);
b &= ~(MCT_CTRL2_VS2_SEL_D0 | MCT_CTRL2_VS2_SEL_D1);
b |= power;
- ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, b);
+ ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL2, b);
if (ret < 0)
goto out;
}
/* Disable autonomous shutdown */
val &= ~(MCT_CTRL3_S1_AUTO_EN | MCT_CTRL3_S2_AUTO_EN);
- ret = menelaus_write_reg(MENELAUS_MCT_CTRL3, val);
+ ret = menelaus_write_reg(m, MENELAUS_MCT_CTRL3, val);
out:
- mutex_unlock(&the_menelaus->lock);
+ mutex_unlock(&m->lock);
return ret;
}
EXPORT_SYMBOL(menelaus_set_mmc_slot);
@@ -407,23 +412,24 @@ EXPORT_SYMBOL(menelaus_set_mmc_slot);
int menelaus_register_mmc_callback(void (*callback)(void *data, u8 card_mask),
void *data)
{
+ struct menelaus_chip *m = the_menelaus;
int ret = 0;

- the_menelaus->mmc_callback_data = data;
- the_menelaus->mmc_callback = callback;
- ret = menelaus_add_irq_work(MENELAUS_MMC_S1CD_IRQ,
+ m->mmc_callback_data = data;
+ m->mmc_callback = callback;
+ ret = menelaus_add_irq_work(m, MENELAUS_MMC_S1CD_IRQ,
menelaus_mmc_cd_work);
if (ret < 0)
return ret;
- ret = menelaus_add_irq_work(MENELAUS_MMC_S2CD_IRQ,
+ ret = menelaus_add_irq_work(m, MENELAUS_MMC_S2CD_IRQ,
menelaus_mmc_cd_work);
if (ret < 0)
return ret;
- ret = menelaus_add_irq_work(MENELAUS_MMC_S1D1_IRQ,
+ ret = menelaus_add_irq_work(m, MENELAUS_MMC_S1D1_IRQ,
menelaus_mmc_cd_work);
if (ret < 0)
return ret;
- ret = menelaus_add_irq_work(MENELAUS_MMC_S2D1_IRQ,
+ ret = menelaus_add_irq_work(m, MENELAUS_MMC_S2D1_IRQ,
menelaus_mmc_cd_work);

return ret;
@@ -432,13 +438,15 @@ EXPORT_SYMBOL(menelaus_register_mmc_callback);

void menelaus_unregister_mmc_callback(void)
{
- menelaus_remove_irq_work(MENELAUS_MMC_S1CD_IRQ);
- menelaus_remove_irq_work(MENELAUS_MMC_S2CD_IRQ);
- menelaus_remove_irq_work(MENELAUS_MMC_S1D1_IRQ);
- menelaus_remove_irq_work(MENELAUS_MMC_S2D1_IRQ);
+ struct menelaus_chip *m = the_menelaus;
+
+ menelaus_remove_irq_work(m, MENELAUS_MMC_S1CD_IRQ);
+ menelaus_remove_irq_work(m, MENELAUS_MMC_S2CD_IRQ);
+ menelaus_remove_irq_work(m, MENELAUS_MMC_S1D1_IRQ);
+ menelaus_remove_irq_work(m, MENELAUS_MMC_S2D1_IRQ);

- the_menelaus->mmc_callback = NULL;
- the_menelaus->mmc_callback_data = NULL;
+ m->mmc_callback = NULL;
+ m->mmc_callback_data = NULL;
}
EXPORT_SYMBOL(menelaus_unregister_mmc_callback);

@@ -455,17 +463,17 @@ struct menelaus_vtg_value {
u16 val;
};

-static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV,
- int vtg_val, int mode)
+static int menelaus_set_voltage(struct menelaus_chip *m,
+ const struct menelaus_vtg *vtg, int mV, int vtg_val, int mode)
{
+ struct i2c_client *c = m->client;
int val, ret;
- struct i2c_client *c = the_menelaus->client;

- mutex_lock(&the_menelaus->lock);
+ mutex_lock(&m->lock);
if (!vtg)
goto set_voltage;

- ret = menelaus_read_reg(vtg->vtg_reg);
+ ret = menelaus_read_reg(m, vtg->vtg_reg);
if (ret < 0)
goto out;
val = ret & ~(((1 << vtg->vtg_bits) - 1) << vtg->vtg_shift);
@@ -475,13 +483,13 @@ static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV,
"to %d mV (reg 0x%02x, val 0x%02x)\n",
vtg->name, mV, vtg->vtg_reg, val);

- ret = menelaus_write_reg(vtg->vtg_reg, val);
+ ret = menelaus_write_reg(m, vtg->vtg_reg, val);
if (ret < 0)
goto out;
set_voltage:
- ret = menelaus_write_reg(vtg->mode_reg, mode);
+ ret = menelaus_write_reg(m, vtg->mode_reg, mode);
out:
- mutex_unlock(&the_menelaus->lock);
+ mutex_unlock(&m->lock);
if (ret == 0) {
/* Wait for voltage to stabilize */
msleep(1);
@@ -489,8 +497,8 @@ out:
return ret;
}

-static int menelaus_get_vtg_value(int vtg, const struct menelaus_vtg_value *tbl,
- int n)
+static int menelaus_get_vtg_value(struct menelaus_chip *m,
+ int vtg, const struct menelaus_vtg_value *tbl, int n)
{
int i;

@@ -533,10 +541,11 @@ static const struct menelaus_vtg_value vcore_values[] = {

int menelaus_set_vcore_sw(unsigned int mV)
{
+ struct menelaus_chip *m = the_menelaus;
+ struct i2c_client *c = m->client;
int val, ret;
- struct i2c_client *c = the_menelaus->client;

- val = menelaus_get_vtg_value(mV, vcore_values,
+ val = menelaus_get_vtg_value(m, mV, vcore_values,
ARRAY_SIZE(vcore_values));
if (val < 0)
return -EINVAL;
@@ -544,11 +553,11 @@ int menelaus_set_vcore_sw(unsigned int mV)
dev_dbg(&c->dev, "Setting VCORE to %d mV (val 0x%02x)\n", mV, val);

/* Set SW mode and the voltage in one go. */
- mutex_lock(&the_menelaus->lock);
- ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val);
+ mutex_lock(&m->lock);
+ ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL1, val);
if (ret == 0)
- the_menelaus->vcore_hw_mode = 0;
- mutex_unlock(&the_menelaus->lock);
+ m->vcore_hw_mode = 0;
+ mutex_unlock(&m->lock);
msleep(1);

return ret;
@@ -556,14 +565,15 @@ int menelaus_set_vcore_sw(unsigned int mV)

int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV)
{
+ struct menelaus_chip *m = the_menelaus;
+ struct i2c_client *c = m->client;
int fval, rval, val, ret;
- struct i2c_client *c = the_menelaus->client;

- rval = menelaus_get_vtg_value(roof_mV, vcore_values,
+ rval = menelaus_get_vtg_value(m, roof_mV, vcore_values,
ARRAY_SIZE(vcore_values));
if (rval < 0)
return -EINVAL;
- fval = menelaus_get_vtg_value(floor_mV, vcore_values,
+ fval = menelaus_get_vtg_value(m, floor_mV, vcore_values,
ARRAY_SIZE(vcore_values));
if (fval < 0)
return -EINVAL;
@@ -571,23 +581,23 @@ int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV)
dev_dbg(&c->dev, "Setting VCORE FLOOR to %d mV and ROOF to %d mV\n",
floor_mV, roof_mV);

- mutex_lock(&the_menelaus->lock);
- ret = menelaus_write_reg(MENELAUS_VCORE_CTRL3, fval);
+ mutex_lock(&m->lock);
+ ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL3, fval);
if (ret < 0)
goto out;
- ret = menelaus_write_reg(MENELAUS_VCORE_CTRL4, rval);
+ ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL4, rval);
if (ret < 0)
goto out;
- if (!the_menelaus->vcore_hw_mode) {
- val = menelaus_read_reg(MENELAUS_VCORE_CTRL1);
+ if (!m->vcore_hw_mode) {
+ val = menelaus_read_reg(m, MENELAUS_VCORE_CTRL1);
/* HW mode, turn OFF byte comparator */
val |= (VCORE_CTRL1_HW_NSW | VCORE_CTRL1_BYP_COMP);
- ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val);
- the_menelaus->vcore_hw_mode = 1;
+ ret = menelaus_write_reg(m, MENELAUS_VCORE_CTRL1, val);
+ m->vcore_hw_mode = 1;
}
msleep(1);
out:
- mutex_unlock(&the_menelaus->lock);
+ mutex_unlock(&m->lock);
return ret;
}

@@ -608,15 +618,16 @@ static const struct menelaus_vtg_value vmem_values[] = {

int menelaus_set_vmem(unsigned int mV)
{
+ struct menelaus_chip *m = the_menelaus;
int val;

if (mV == 0)
- return menelaus_set_voltage(&vmem_vtg, 0, 0, 0);
+ return menelaus_set_voltage(m, &vmem_vtg, 0, 0, 0);

- val = menelaus_get_vtg_value(mV, vmem_values, ARRAY_SIZE(vmem_values));
+ val = menelaus_get_vtg_value(m, mV, vmem_values, ARRAY_SIZE(vmem_values));
if (val < 0)
return -EINVAL;
- return menelaus_set_voltage(&vmem_vtg, mV, val, 0x02);
+ return menelaus_set_voltage(m, &vmem_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vmem);

@@ -637,15 +648,16 @@ static const struct menelaus_vtg_value vio_values[] = {

int menelaus_set_vio(unsigned int mV)
{
+ struct menelaus_chip *m = the_menelaus;
int val;

if (mV == 0)
- return menelaus_set_voltage(&vio_vtg, 0, 0, 0);
+ return menelaus_set_voltage(m, &vio_vtg, 0, 0, 0);

- val = menelaus_get_vtg_value(mV, vio_values, ARRAY_SIZE(vio_values));
+ val = menelaus_get_vtg_value(m, mV, vio_values, ARRAY_SIZE(vio_values));
if (val < 0)
return -EINVAL;
- return menelaus_set_voltage(&vio_vtg, mV, val, 0x02);
+ return menelaus_set_voltage(m, &vio_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vio);

@@ -678,6 +690,7 @@ static const struct menelaus_vtg vdcdc3_vtg = {

int menelaus_set_vdcdc(int dcdc, unsigned int mV)
{
+ struct menelaus_chip *m = the_menelaus;
const struct menelaus_vtg *vtg;
int val;

@@ -689,13 +702,13 @@ int menelaus_set_vdcdc(int dcdc, unsigned int mV)
vtg = &vdcdc3_vtg;

if (mV == 0)
- return menelaus_set_voltage(vtg, 0, 0, 0);
+ return menelaus_set_voltage(m, vtg, 0, 0, 0);

- val = menelaus_get_vtg_value(mV, vdcdc_values,
+ val = menelaus_get_vtg_value(m, mV, vdcdc_values,
ARRAY_SIZE(vdcdc_values));
if (val < 0)
return -EINVAL;
- return menelaus_set_voltage(vtg, mV, val, 0x03);
+ return menelaus_set_voltage(m, vtg, mV, val, 0x03);
}

static const struct menelaus_vtg_value vmmc_values[] = {
@@ -715,15 +728,16 @@ static const struct menelaus_vtg vmmc_vtg = {

int menelaus_set_vmmc(unsigned int mV)
{
+ struct menelaus_chip *m = the_menelaus;
int val;

if (mV == 0)
- return menelaus_set_voltage(&vmmc_vtg, 0, 0, 0);
+ return menelaus_set_voltage(m, &vmmc_vtg, 0, 0, 0);

- val = menelaus_get_vtg_value(mV, vmmc_values, ARRAY_SIZE(vmmc_values));
+ val = menelaus_get_vtg_value(m, mV, vmmc_values, ARRAY_SIZE(vmmc_values));
if (val < 0)
return -EINVAL;
- return menelaus_set_voltage(&vmmc_vtg, mV, val, 0x02);
+ return menelaus_set_voltage(m, &vmmc_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vmmc);

@@ -745,37 +759,41 @@ static const struct menelaus_vtg vaux_vtg = {

int menelaus_set_vaux(unsigned int mV)
{
+ struct menelaus_chip *m = the_menelaus;
int val;

if (mV == 0)
- return menelaus_set_voltage(&vaux_vtg, 0, 0, 0);
+ return menelaus_set_voltage(m, &vaux_vtg, 0, 0, 0);

- val = menelaus_get_vtg_value(mV, vaux_values, ARRAY_SIZE(vaux_values));
+ val = menelaus_get_vtg_value(m, mV, vaux_values, ARRAY_SIZE(vaux_values));
if (val < 0)
return -EINVAL;
- return menelaus_set_voltage(&vaux_vtg, mV, val, 0x02);
+ return menelaus_set_voltage(m, &vaux_vtg, mV, val, 0x02);
}
EXPORT_SYMBOL(menelaus_set_vaux);

int menelaus_get_slot_pin_states(void)
{
- return menelaus_read_reg(MENELAUS_MCT_PIN_ST);
+ struct menelaus_chip *m = the_menelaus;
+
+ return menelaus_read_reg(m, MENELAUS_MCT_PIN_ST);
}
EXPORT_SYMBOL(menelaus_get_slot_pin_states);

int menelaus_set_regulator_sleep(int enable, u32 val)
{
+ struct menelaus_chip *m = the_menelaus;
+ struct i2c_client *c = m->client;
int t, ret;
- struct i2c_client *c = the_menelaus->client;

- mutex_lock(&the_menelaus->lock);
- ret = menelaus_write_reg(MENELAUS_SLEEP_CTRL2, val);
+ mutex_lock(&m->lock);
+ ret = menelaus_write_reg(m, MENELAUS_SLEEP_CTRL2, val);
if (ret < 0)
goto out;

dev_dbg(&c->dev, "regulator sleep configuration: %02x\n", val);

- ret = menelaus_read_reg(MENELAUS_GPIO_CTRL);
+ ret = menelaus_read_reg(m, MENELAUS_GPIO_CTRL);
if (ret < 0)
goto out;
t = (GPIO_CTRL_SLPCTLEN | GPIO3_DIR_INPUT);
@@ -783,9 +801,9 @@ int menelaus_set_regulator_sleep(int enable, u32 val)
ret |= t;
else
ret &= ~t;
- ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret);
+ ret = menelaus_write_reg(m, MENELAUS_GPIO_CTRL, ret);
out:
- mutex_unlock(&the_menelaus->lock);
+ mutex_unlock(&m->lock);
return ret;
}

@@ -793,25 +811,25 @@ out:

static irqreturn_t menelaus_irq(int irq, void *_menelaus)
{
- struct menelaus_chip *menelaus = _menelaus;
- void (*handler)(struct menelaus_chip *menelaus);
+ struct menelaus_chip *m = _menelaus;
+ void (*handler)(struct menelaus_chip *m);
unsigned long isr;
unsigned long i;

- isr = (menelaus_read_reg(MENELAUS_INT_STATUS2)
- & ~menelaus->mask2) << 8;
- isr |= menelaus_read_reg(MENELAUS_INT_STATUS1)
- & ~menelaus->mask1;
+ isr = (menelaus_read_reg(m, MENELAUS_INT_STATUS2)
+ & ~m->mask2) << 8;
+ isr |= menelaus_read_reg(m, MENELAUS_INT_STATUS1)
+ & ~m->mask1;

for_each_set_bit(i, &isr, 16) {
- mutex_lock(&menelaus->lock);
- menelaus_disable_irq(i);
- menelaus_ack_irq(i);
- handler = menelaus->handlers[i];
+ mutex_lock(&m->lock);
+ menelaus_disable_irq(m, i);
+ menelaus_ack_irq(m, i);
+ handler = m->handlers[i];
if (handler)
- handler(menelaus);
- menelaus_enable_irq(i);
- mutex_unlock(&menelaus->lock);
+ handler(m);
+ menelaus_enable_irq(m, i);
+ mutex_unlock(&m->lock);
}

return IRQ_HANDLED;
@@ -839,11 +857,12 @@ static irqreturn_t menelaus_irq(int irq, void *_menelaus)

#define RTC_HR_PM (1 << 7)

-static void menelaus_to_time(char *regs, struct rtc_time *t)
+static void menelaus_to_time(struct menelaus_chip *m,
+ char *regs, struct rtc_time *t)
{
t->tm_sec = bcd2bin(regs[0]);
t->tm_min = bcd2bin(regs[1]);
- if (the_menelaus->rtc_control & RTC_CTRL_MODE12) {
+ if (m->rtc_control & RTC_CTRL_MODE12) {
t->tm_hour = bcd2bin(regs[2] & 0x1f) - 1;
if (regs[2] & RTC_HR_PM)
t->tm_hour += 12;
@@ -854,19 +873,20 @@ static void menelaus_to_time(char *regs, struct rtc_time *t)
t->tm_year = bcd2bin(regs[5]) + 100;
}

-static int time_to_menelaus(struct rtc_time *t, int regnum)
+static int time_to_menelaus(struct menelaus_chip *m,
+ struct rtc_time *t, int regnum)
{
int hour, status;

- status = menelaus_write_reg(regnum++, bin2bcd(t->tm_sec));
+ status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_sec));
if (status < 0)
goto fail;

- status = menelaus_write_reg(regnum++, bin2bcd(t->tm_min));
+ status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_min));
if (status < 0)
goto fail;

- if (the_menelaus->rtc_control & RTC_CTRL_MODE12) {
+ if (m->rtc_control & RTC_CTRL_MODE12) {
hour = t->tm_hour + 1;
if (hour > 12)
hour = RTC_HR_PM | bin2bcd(hour - 12);
@@ -874,31 +894,32 @@ static int time_to_menelaus(struct rtc_time *t, int regnum)
hour = bin2bcd(hour);
} else
hour = bin2bcd(t->tm_hour);
- status = menelaus_write_reg(regnum++, hour);
+ status = menelaus_write_reg(m, regnum++, hour);
if (status < 0)
goto fail;

- status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mday));
+ status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_mday));
if (status < 0)
goto fail;

- status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mon + 1));
+ status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_mon + 1));
if (status < 0)
goto fail;

- status = menelaus_write_reg(regnum++, bin2bcd(t->tm_year - 100));
+ status = menelaus_write_reg(m, regnum++, bin2bcd(t->tm_year - 100));
if (status < 0)
goto fail;

return 0;
fail:
- dev_err(&the_menelaus->client->dev, "rtc write reg %02x, err %d\n",
+ dev_err(&m->client->dev, "rtc write reg %02x, err %d\n",
--regnum, status);
return status;
}

static int menelaus_read_time(struct device *dev, struct rtc_time *t)
{
+ struct menelaus_chip *m = dev_get_drvdata(dev);
struct i2c_msg msg[2];
char regs[7];
int status;
@@ -916,13 +937,13 @@ static int menelaus_read_time(struct device *dev, struct rtc_time *t)
msg[1].len = sizeof(regs);
msg[1].buf = regs;

- status = i2c_transfer(the_menelaus->client->adapter, msg, 2);
+ status = i2c_transfer(m->client->adapter, msg, 2);
if (status != 2) {
dev_err(dev, "%s error %d\n", "read", status);
return -EIO;
}

- menelaus_to_time(regs, t);
+ menelaus_to_time(m, regs, t);
t->tm_wday = bcd2bin(regs[6]);

return 0;
@@ -930,23 +951,24 @@ static int menelaus_read_time(struct device *dev, struct rtc_time *t)

static int menelaus_set_time(struct device *dev, struct rtc_time *t)
{
+ struct menelaus_chip *m = dev_get_drvdata(dev);
int status;

/* write date and time registers */
- status = time_to_menelaus(t, MENELAUS_RTC_SEC);
+ status = time_to_menelaus(m, t, MENELAUS_RTC_SEC);
if (status < 0)
return status;
- status = menelaus_write_reg(MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday));
+ status = menelaus_write_reg(m, MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday));
if (status < 0) {
- dev_err(&the_menelaus->client->dev, "rtc write reg %02x "
+ dev_err(&m->client->dev, "rtc write reg %02x "
"err %d\n", MENELAUS_RTC_WKDAY, status);
return status;
}

/* now commit the write */
- status = menelaus_write_reg(MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY);
+ status = menelaus_write_reg(m, MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY);
if (status < 0)
- dev_err(&the_menelaus->client->dev, "rtc commit time, err %d\n",
+ dev_err(&m->client->dev, "rtc commit time, err %d\n",
status);

return 0;
@@ -954,6 +976,7 @@ static int menelaus_set_time(struct device *dev, struct rtc_time *t)

static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w)
{
+ struct menelaus_chip *m = dev_get_drvdata(dev);
struct i2c_msg msg[2];
char regs[6];
int status;
@@ -971,15 +994,15 @@ static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w)
msg[1].len = sizeof(regs);
msg[1].buf = regs;

- status = i2c_transfer(the_menelaus->client->adapter, msg, 2);
+ status = i2c_transfer(m->client->adapter, msg, 2);
if (status != 2) {
dev_err(dev, "%s error %d\n", "alarm read", status);
return -EIO;
}

- menelaus_to_time(regs, &w->time);
+ menelaus_to_time(m, regs, &w->time);

- w->enabled = !!(the_menelaus->rtc_control & RTC_CTRL_AL_EN);
+ w->enabled = !!(m->rtc_control & RTC_CTRL_AL_EN);

/* NOTE we *could* check if actually pending... */
w->pending = 0;
@@ -989,30 +1012,31 @@ static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w)

static int menelaus_set_alarm(struct device *dev, struct rtc_wkalrm *w)
{
+ struct menelaus_chip *m = dev_get_drvdata(dev);
int status;

- if (the_menelaus->client->irq <= 0 && w->enabled)
+ if (m->client->irq <= 0 && w->enabled)
return -ENODEV;

/* clear previous alarm enable */
- if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) {
- the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN;
- status = menelaus_write_reg(MENELAUS_RTC_CTRL,
- the_menelaus->rtc_control);
+ if (m->rtc_control & RTC_CTRL_AL_EN) {
+ m->rtc_control &= ~RTC_CTRL_AL_EN;
+ status = menelaus_write_reg(m, MENELAUS_RTC_CTRL,
+ m->rtc_control);
if (status < 0)
return status;
}

/* write alarm registers */
- status = time_to_menelaus(&w->time, MENELAUS_RTC_AL_SEC);
+ status = time_to_menelaus(m, &w->time, MENELAUS_RTC_AL_SEC);
if (status < 0)
return status;

/* enable alarm if requested */
if (w->enabled) {
- the_menelaus->rtc_control |= RTC_CTRL_AL_EN;
- status = menelaus_write_reg(MENELAUS_RTC_CTRL,
- the_menelaus->rtc_control);
+ m->rtc_control |= RTC_CTRL_AL_EN;
+ status = menelaus_write_reg(m, MENELAUS_RTC_CTRL,
+ m->rtc_control);
}

return status;
@@ -1030,44 +1054,45 @@ static void menelaus_rtc_update_work(struct menelaus_chip *m)

static int menelaus_ioctl(struct device *dev, unsigned cmd, unsigned long arg)
{
+ struct menelaus_chip *m = dev_get_drvdata(dev);
int status;

- if (the_menelaus->client->irq <= 0)
+ if (m->client->irq <= 0)
return -ENOIOCTLCMD;

switch (cmd) {
/* alarm IRQ */
case RTC_AIE_ON:
- if (the_menelaus->rtc_control & RTC_CTRL_AL_EN)
+ if (m->rtc_control & RTC_CTRL_AL_EN)
return 0;
- the_menelaus->rtc_control |= RTC_CTRL_AL_EN;
+ m->rtc_control |= RTC_CTRL_AL_EN;
break;
case RTC_AIE_OFF:
- if (!(the_menelaus->rtc_control & RTC_CTRL_AL_EN))
+ if (!(m->rtc_control & RTC_CTRL_AL_EN))
return 0;
- the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN;
+ m->rtc_control &= ~RTC_CTRL_AL_EN;
break;
/* 1/second "update" IRQ */
case RTC_UIE_ON:
- if (the_menelaus->uie)
+ if (m->uie)
return 0;
- status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ);
- status = menelaus_add_irq_work(MENELAUS_RTCTMR_IRQ,
+ status = menelaus_remove_irq_work(m, MENELAUS_RTCTMR_IRQ);
+ status = menelaus_add_irq_work(m, MENELAUS_RTCTMR_IRQ,
menelaus_rtc_update_work);
if (status == 0)
- the_menelaus->uie = 1;
+ m->uie = 1;
return status;
case RTC_UIE_OFF:
- if (!the_menelaus->uie)
+ if (!m->uie)
return 0;
- status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ);
+ status = menelaus_remove_irq_work(m, MENELAUS_RTCTMR_IRQ);
if (status == 0)
- the_menelaus->uie = 0;
+ m->uie = 0;
return status;
default:
return -ENOIOCTLCMD;
}
- return menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control);
+ return menelaus_write_reg(m, MENELAUS_RTC_CTRL, m->rtc_control);
}

#else
@@ -1092,8 +1117,8 @@ static void menelaus_rtc_alarm_work(struct menelaus_chip *m)
local_irq_enable();

/* then disable it; alarms are oneshot */
- the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN;
- menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control);
+ m->rtc_control &= ~RTC_CTRL_AL_EN;
+ menelaus_write_reg(m, MENELAUS_RTC_CTRL, m->rtc_control);
}

static inline void menelaus_rtc_init(struct menelaus_chip *m)
@@ -1101,14 +1126,14 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m)
int alarm = (m->client->irq > 0);

/* assume 32KDETEN pin is pulled high */
- if (!(menelaus_read_reg(MENELAUS_OSC_CTRL) & 0x80)) {
+ if (!(menelaus_read_reg(m, MENELAUS_OSC_CTRL) & 0x80)) {
dev_dbg(&m->client->dev, "no 32k oscillator\n");
return;
}

/* support RTC alarm; it can issue wakeups */
if (alarm) {
- if (menelaus_add_irq_work(MENELAUS_RTCALM_IRQ,
+ if (menelaus_add_irq_work(m, MENELAUS_RTCALM_IRQ,
menelaus_rtc_alarm_work) < 0) {
dev_err(&m->client->dev, "can't handle RTC alarm\n");
return;
@@ -1117,7 +1142,7 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m)
}

/* be sure RTC is enabled; allow 1/sec irqs; leave 12hr mode alone */
- m->rtc_control = menelaus_read_reg(MENELAUS_RTC_CTRL);
+ m->rtc_control = menelaus_read_reg(m, MENELAUS_RTC_CTRL);
if (!(m->rtc_control & RTC_CTRL_RTC_EN)
|| (m->rtc_control & RTC_CTRL_AL_EN)
|| (m->rtc_control & RTC_CTRL_EVERY_MASK)) {
@@ -1127,7 +1152,7 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m)
}
m->rtc_control &= ~RTC_CTRL_EVERY_MASK;
m->rtc_control &= ~RTC_CTRL_AL_EN;
- menelaus_write_reg(MENELAUS_RTC_CTRL, m->rtc_control);
+ menelaus_write_reg(m, MENELAUS_RTC_CTRL, m->rtc_control);
}

m->rtc = rtc_device_register(DRIVER_NAME,
@@ -1135,12 +1160,12 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m)
&menelaus_rtc_ops, THIS_MODULE);
if (IS_ERR(m->rtc)) {
if (alarm) {
- menelaus_remove_irq_work(MENELAUS_RTCALM_IRQ);
+ menelaus_remove_irq_work(m, MENELAUS_RTCALM_IRQ);
device_init_wakeup(&m->client->dev, 0);
}
dev_err(&m->client->dev, "can't register RTC: %d\n",
(int) PTR_ERR(m->rtc));
- the_menelaus->rtc = NULL;
+ m->rtc = NULL;
}
}

@@ -1160,7 +1185,7 @@ static struct i2c_driver menelaus_i2c_driver;
static int menelaus_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- struct menelaus_chip *menelaus;
+ struct menelaus_chip *m;
int rev = 0, val;
int err = 0;
struct menelaus_platform_data *menelaus_pdata =
@@ -1172,37 +1197,36 @@ static int menelaus_probe(struct i2c_client *client,
return -ENODEV;
}

- menelaus = devm_kzalloc(&client->dev, sizeof(*menelaus), GFP_KERNEL);
- if (!menelaus)
+ m = devm_kzalloc(&client->dev, sizeof(*m), GFP_KERNEL);
+ if (!m)
return -ENOMEM;

- i2c_set_clientdata(client, menelaus);
+ i2c_set_clientdata(client, m);

- the_menelaus = menelaus;
- menelaus->client = client;
+ the_menelaus = m;
+ m->client = client;

/* If a true probe check the device */
- rev = menelaus_read_reg(MENELAUS_REV);
+ rev = menelaus_read_reg(m, MENELAUS_REV);
if (rev < 0) {
pr_err(DRIVER_NAME ": device not found");
return -ENODEV;
}

/* Ack and disable all Menelaus interrupts */
- menelaus_write_reg(MENELAUS_INT_ACK1, 0xff);
- menelaus_write_reg(MENELAUS_INT_ACK2, 0xff);
- menelaus_write_reg(MENELAUS_INT_MASK1, 0xff);
- menelaus_write_reg(MENELAUS_INT_MASK2, 0xff);
- menelaus->mask1 = 0xff;
- menelaus->mask2 = 0xff;
+ menelaus_write_reg(m, MENELAUS_INT_ACK1, 0xff);
+ menelaus_write_reg(m, MENELAUS_INT_ACK2, 0xff);
+ menelaus_write_reg(m, MENELAUS_INT_MASK1, 0xff);
+ menelaus_write_reg(m, MENELAUS_INT_MASK2, 0xff);
+ m->mask1 = 0xff;
+ m->mask2 = 0xff;

/* Set output buffer strengths */
- menelaus_write_reg(MENELAUS_MCT_CTRL1, 0x73);
+ menelaus_write_reg(m, MENELAUS_MCT_CTRL1, 0x73);

if (client->irq > 0) {
err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
- menelaus_irq, IRQF_ONESHOT, DRIVER_NAME,
- menelaus);
+ menelaus_irq, IRQF_ONESHOT, DRIVER_NAME, m);
if (err) {
dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
client->irq, err);
@@ -1210,17 +1234,17 @@ static int menelaus_probe(struct i2c_client *client,
}
}

- mutex_init(&menelaus->lock);
+ mutex_init(&m->lock);

pr_info("Menelaus rev %d.%d\n", rev >> 4, rev & 0x0f);

- val = menelaus_read_reg(MENELAUS_VCORE_CTRL1);
+ val = menelaus_read_reg(m, MENELAUS_VCORE_CTRL1);
if (val < 0)
goto fail;
if (val & (1 << 7))
- menelaus->vcore_hw_mode = 1;
+ m->vcore_hw_mode = 1;
else
- menelaus->vcore_hw_mode = 0;
+ m->vcore_hw_mode = 0;

if (menelaus_pdata != NULL && menelaus_pdata->late_init != NULL) {
err = menelaus_pdata->late_init(&client->dev);
@@ -1228,7 +1252,7 @@ static int menelaus_probe(struct i2c_client *client,
goto fail;
}

- menelaus_rtc_init(menelaus);
+ menelaus_rtc_init(m);

return 0;
fail:
--
1.8.4.GIT

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