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Message-id: <1410922044-4170-3-git-send-email-jonghwa3.lee@samsung.com>
Date: Wed, 17 Sep 2014 11:47:24 +0900
From: Jonghwa Lee <jonghwa3.lee@...sung.com>
To: linux-kernel@...r.kernel.org
Cc: linux-pm@...r.kernel.org, sre@...nel.org, dbaryshkov@...il.com,
dwmw2@...radead.org, anton@...msg.org, pavel@....cz,
Jonghwa Lee <jonghwa3.lee@...sung.com>
Subject: [PATCH 2/2] power: smb347-charger: Support Summit SMB358 charger IC.
Summit microelectronics' SMB358 charger chip has almost same register map
and functionality with SMB347. The voltage and current table are only differed.
Thus, SMB347 driver can support SMB358 chip fully with few modifications.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
Acked-by : Chanwoo Choi <cw00.choi@...sung.com>
Acked-by : Myungjoo Ham <myungjoo.ham@...sung.com>
---
.../bindings/power_supply/smb347_charger.txt | 1 +
drivers/power/smb347-charger.c | 98 +++++++++-----------
2 files changed, 47 insertions(+), 52 deletions(-)
diff --git a/Documentation/devicetree/bindings/power_supply/smb347_charger.txt b/Documentation/devicetree/bindings/power_supply/smb347_charger.txt
index 91570a5..776ae29 100644
--- a/Documentation/devicetree/bindings/power_supply/smb347_charger.txt
+++ b/Documentation/devicetree/bindings/power_supply/smb347_charger.txt
@@ -3,6 +3,7 @@ smb347_charger bindings
[Required porperties]
- compatible : "summit,smb347"
+ "summit,smb358"
- reg : Slave address for i2c interface
# At least one of followings should be set
- enable-usb-charging
diff --git a/drivers/power/smb347-charger.c b/drivers/power/smb347-charger.c
index 8073879..1bfb115 100644
--- a/drivers/power/smb347-charger.c
+++ b/drivers/power/smb347-charger.c
@@ -136,6 +136,7 @@
* @pdata: pointer to platform data
*/
struct smb347_charger {
+ int id;
struct mutex lock;
struct device *dev;
struct regmap *regmap;
@@ -148,58 +149,46 @@ struct smb347_charger {
const struct smb347_charger_platform_data *pdata;
};
+enum smb_charger_chipid {
+ SMB347,
+ SMB358,
+ NUM_CHIP_TYPES,
+};
+
/* Fast charge current in uA */
-static const unsigned int fcc_tbl[] = {
- 700000,
- 900000,
- 1200000,
- 1500000,
- 1800000,
- 2000000,
- 2200000,
- 2500000,
+static const unsigned int fcc_tbl[NUM_CHIP_TYPES][8] = {
+ [SMB347] = { 700000, 900000, 1200000, 1500000,
+ 1800000, 2000000, 2200000, 2500000 },
+ [SMB358] = { 200000, 450000, 600000, 900000,
+ 1300000, 1500000, 1800000, 2000000 },
};
/* Pre-charge current in uA */
-static const unsigned int pcc_tbl[] = {
- 100000,
- 150000,
- 200000,
- 250000,
+static const unsigned int pcc_tbl[NUM_CHIP_TYPES][4] = {
+ [SMB347] = { 100000, 150000, 200000, 250000 },
+ [SMB358] = { 150000, 250000, 350000, 450000 },
};
/* Termination current in uA */
-static const unsigned int tc_tbl[] = {
- 37500,
- 50000,
- 100000,
- 150000,
- 200000,
- 250000,
- 500000,
- 600000,
+static const unsigned int tc_tbl[NUM_CHIP_TYPES][8] = {
+ [SMB347] = { 37500, 50000, 100000, 150000,
+ 200000, 250000, 500000, 600000 },
+ [SMB358] = { 30000, 40000, 60000, 80000,
+ 100000, 125000, 150000, 200000 },
};
/* Input current limit in uA */
-static const unsigned int icl_tbl[] = {
- 300000,
- 500000,
- 700000,
- 900000,
- 1200000,
- 1500000,
- 1800000,
- 2000000,
- 2200000,
- 2500000,
+static const unsigned int icl_tbl[NUM_CHIP_TYPES][10] = {
+ [SMB347] = { 300000, 500000, 700000, 900000, 1200000,
+ 1500000, 1800000, 2000000, 2200000, 2500000 },
+ [SMB358] = { 300000, 500000, 700000, 1000000, 1500000,
+ 1800000, 2000000, 2000000, 2000000, 2000000 },
};
/* Charge current compensation in uA */
-static const unsigned int ccc_tbl[] = {
- 250000,
- 700000,
- 900000,
- 1200000,
+static const unsigned int ccc_tbl[NUM_CHIP_TYPES][4] = {
+ [SMB347] = { 250000, 700000, 900000, 1200000 },
+ [SMB358] = { 200000, 450000, 600000, 900000 },
};
/* Convert register value to current using lookup table */
@@ -354,10 +343,10 @@ static int smb347_start_stop_charging(struct smb347_charger *smb)
static int smb347_set_charge_current(struct smb347_charger *smb)
{
- int ret;
+ int ret, id = smb->id;
if (smb->pdata->max_charge_current) {
- ret = current_to_hw(fcc_tbl, ARRAY_SIZE(fcc_tbl),
+ ret = current_to_hw(fcc_tbl[id], ARRAY_SIZE(fcc_tbl[id]),
smb->pdata->max_charge_current);
if (ret < 0)
return ret;
@@ -370,7 +359,7 @@ static int smb347_set_charge_current(struct smb347_charger *smb)
}
if (smb->pdata->pre_charge_current) {
- ret = current_to_hw(pcc_tbl, ARRAY_SIZE(pcc_tbl),
+ ret = current_to_hw(pcc_tbl[id], ARRAY_SIZE(pcc_tbl[id]),
smb->pdata->pre_charge_current);
if (ret < 0)
return ret;
@@ -383,7 +372,7 @@ static int smb347_set_charge_current(struct smb347_charger *smb)
}
if (smb->pdata->termination_current) {
- ret = current_to_hw(tc_tbl, ARRAY_SIZE(tc_tbl),
+ ret = current_to_hw(tc_tbl[id], ARRAY_SIZE(tc_tbl[id]),
smb->pdata->termination_current);
if (ret < 0)
return ret;
@@ -399,10 +388,10 @@ static int smb347_set_charge_current(struct smb347_charger *smb)
static int smb347_set_current_limits(struct smb347_charger *smb)
{
- int ret;
+ int ret, id = smb->id;
if (smb->pdata->mains_current_limit) {
- ret = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ ret = current_to_hw(icl_tbl[id], ARRAY_SIZE(icl_tbl[id]),
smb->pdata->mains_current_limit);
if (ret < 0)
return ret;
@@ -415,7 +404,7 @@ static int smb347_set_current_limits(struct smb347_charger *smb)
}
if (smb->pdata->usb_hc_current_limit) {
- ret = current_to_hw(icl_tbl, ARRAY_SIZE(icl_tbl),
+ ret = current_to_hw(icl_tbl[id], ARRAY_SIZE(icl_tbl[id]),
smb->pdata->usb_hc_current_limit);
if (ret < 0)
return ret;
@@ -467,7 +456,7 @@ static int smb347_set_temp_limits(struct smb347_charger *smb)
{
bool enable_therm_monitor = false;
int ret = 0;
- int val;
+ int val, id = smb->id;
if (smb->pdata->chip_temp_threshold) {
val = smb->pdata->chip_temp_threshold;
@@ -589,7 +578,7 @@ static int smb347_set_temp_limits(struct smb347_charger *smb)
}
if (smb->pdata->charge_current_compensation) {
- val = current_to_hw(ccc_tbl, ARRAY_SIZE(ccc_tbl),
+ val = current_to_hw(ccc_tbl[id], ARRAY_SIZE(ccc_tbl[id]),
smb->pdata->charge_current_compensation);
if (val < 0)
return val;
@@ -879,7 +868,7 @@ out:
*/
static int get_const_charge_current(struct smb347_charger *smb)
{
- int ret, intval;
+ int ret, intval, id = smb->id;
unsigned int v;
if (!smb347_is_ps_online(smb))
@@ -894,10 +883,12 @@ static int get_const_charge_current(struct smb347_charger *smb)
* and we can detect which table to use from bit 5.
*/
if (v & 0x20) {
- intval = hw_to_current(fcc_tbl, ARRAY_SIZE(fcc_tbl), v & 7);
+ intval = hw_to_current(fcc_tbl[id],
+ ARRAY_SIZE(fcc_tbl[id]), v & 7);
} else {
v >>= 3;
- intval = hw_to_current(pcc_tbl, ARRAY_SIZE(pcc_tbl), v & 7);
+ intval = hw_to_current(pcc_tbl[id],
+ ARRAY_SIZE(pcc_tbl[id]), v & 7);
}
return intval;
@@ -1282,6 +1273,7 @@ static int smb347_probe(struct i2c_client *client,
i2c_set_clientdata(client, smb);
mutex_init(&smb->lock);
+ smb->id = id->driver_data;
smb->dev = &client->dev;
smb->regmap = devm_regmap_init_i2c(client, &smb347_regmap);
@@ -1369,7 +1361,8 @@ static int smb347_remove(struct i2c_client *client)
}
static const struct i2c_device_id smb347_id[] = {
- { "smb347", 0 },
+ { "smb347", SMB347 },
+ { "smb358", SMB358 },
{ }
};
MODULE_DEVICE_TABLE(i2c, smb347_id);
@@ -1377,6 +1370,7 @@ MODULE_DEVICE_TABLE(i2c, smb347_id);
#ifdef CONFIG_OF
static struct of_device_id of_smb347_ids[] = {
{ .compatible = "summit,smb347" },
+ { .compatible = "summit,smb358" },
{},
};
#endif
--
1.7.9.5
--
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