ab8500-bm: Add support for the new ab8540 platform
Provide AB8540 platform specific information required to run the
Battery Management subsystem on AB8540 based devices. For this to
happen we see the introduction of separate platform specific data
structures and a means in which to process them.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index f249a65..6089ee7 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -57,7 +57,9 @@
#define MAIN_CH_INPUT_CURR_SHIFT 4
#define VBUS_IN_CURR_LIM_SHIFT 4
+#define AB8540_VBUS_IN_CURR_LIM_SHIFT 2
#define AUTO_VBUS_IN_CURR_LIM_SHIFT 4
+#define AB8540_AUTO_VBUS_IN_CURR_MASK 0x3F
#define VBUS_IN_CURR_LIM_RETRY_SET_TIME 30 /* seconds */
#define LED_INDICATOR_PWM_ENA 0x01
@@ -82,6 +84,7 @@
#define AB8500_USB_LINK_STATUS 0x78
#define AB8505_USB_LINK_STATUS 0xF8
#define AB8500_STD_HOST_SUSP 0x18
+#define USB_LINK_STATUS_SHIFT 3
/* Watchdog timeout constant */
#define WD_TIMER 0x30 /* 4min */
@@ -751,8 +754,7 @@
"VBUS has collapsed\n");
ret = -ENXIO;
break;
- }
- if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+ } else {
dev_dbg(di->dev, "USB Type - Charging not allowed\n");
di->max_usb_in_curr.usb_type_max =
USB_CH_IP_CUR_LVL_0P05;
@@ -807,30 +809,22 @@
dev_err(di->dev, "%s ab8500 read failed\n", __func__);
return ret;
}
- if (is_ab8500(di->parent)) {
+ if (is_ab8500(di->parent))
ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
- AB8500_USB_LINE_STAT_REG, &val);
- } else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
- ret = abx500_get_register_interruptible(di->dev,
- AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
- } else {
- dev_err(di->dev, "%s unsupported analog baseband\n", __func__);
- return -ENXIO;
- }
+ AB8500_USB_LINE_STAT_REG, &val);
+ else
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
if (ret < 0) {
dev_err(di->dev, "%s ab8500 read failed\n", __func__);
return ret;
}
/* get the USB type */
- if (is_ab8500(di->parent)) {
- val = (val & AB8500_USB_LINK_STATUS) >> 3;
- } else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
- val = (val & AB8505_USB_LINK_STATUS) >> 3;
- } else {
- dev_err(di->dev, "%s unsupported analog baseband\n", __func__);
- return -ENXIO;
- }
+ if (is_ab8500(di->parent))
+ val = (val & AB8500_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT;
+ else
+ val = (val & AB8505_USB_LINK_STATUS) >> USB_LINK_STATUS_SHIFT;
ret = ab8500_charger_max_usb_curr(di,
(enum ab8500_charger_link_status) val);
@@ -866,16 +860,12 @@
return ret;
}
- if (is_ab8500(di->parent)) {
+ if (is_ab8500(di->parent))
ret = abx500_get_register_interruptible(di->dev,
AB8500_USB, AB8500_USB_LINE_STAT_REG, &val);
- } else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
+ else
ret = abx500_get_register_interruptible(di->dev,
AB8500_USB, AB8500_USB_LINK1_STAT_REG, &val);
- } else {
- dev_err(di->dev, "%s unsupported analog baseband\n", __func__);
- return -ENXIO;
- }
if (ret < 0) {
dev_err(di->dev, "%s ab8500 read failed\n", __func__);
return ret;
@@ -889,14 +879,12 @@
*/
/* get the USB type */
- if (is_ab8500(di->parent)) {
- val = (val & AB8500_USB_LINK_STATUS) >> 3;
- } else if (is_ab9540(di->parent) || is_ab8505(di->parent)) {
- val = (val & AB8505_USB_LINK_STATUS) >> 3;
- } else {
- dev_err(di->dev, "%s unsupported analog baseband\n", __func__);
- return -ENXIO;
- }
+ if (is_ab8500(di->parent))
+ val = (val & AB8500_USB_LINK_STATUS) >>
+ USB_LINK_STATUS_SHIFT;
+ else
+ val = (val & AB8505_USB_LINK_STATUS) >>
+ USB_LINK_STATUS_SHIFT;
if (val)
break;
}
@@ -991,51 +979,6 @@
4600 ,
};
-/*
- * This array maps the raw hex value to charger current used by the AB8500
- * Values taken from the UM0836
- */
-static int ab8500_charger_current_map[] = {
- 100 ,
- 200 ,
- 300 ,
- 400 ,
- 500 ,
- 600 ,
- 700 ,
- 800 ,
- 900 ,
- 1000 ,
- 1100 ,
- 1200 ,
- 1300 ,
- 1400 ,
- 1500 ,
-};
-
-/*
- * This array maps the raw hex value to VBUS input current used by the AB8500
- * Values taken from the UM0836
- */
-static int ab8500_charger_vbus_in_curr_map[] = {
- USB_CH_IP_CUR_LVL_0P05,
- USB_CH_IP_CUR_LVL_0P09,
- USB_CH_IP_CUR_LVL_0P19,
- USB_CH_IP_CUR_LVL_0P29,
- USB_CH_IP_CUR_LVL_0P38,
- USB_CH_IP_CUR_LVL_0P45,
- USB_CH_IP_CUR_LVL_0P5,
- USB_CH_IP_CUR_LVL_0P6,
- USB_CH_IP_CUR_LVL_0P7,
- USB_CH_IP_CUR_LVL_0P8,
- USB_CH_IP_CUR_LVL_0P9,
- USB_CH_IP_CUR_LVL_1P0,
- USB_CH_IP_CUR_LVL_1P1,
- USB_CH_IP_CUR_LVL_1P3,
- USB_CH_IP_CUR_LVL_1P4,
- USB_CH_IP_CUR_LVL_1P5,
-};
-
static int ab8500_voltage_to_regval(int voltage)
{
int i;
@@ -1057,41 +1000,41 @@
return -1;
}
-static int ab8500_current_to_regval(int curr)
+static int ab8500_current_to_regval(struct ab8500_charger *di, int curr)
{
int i;
- if (curr < ab8500_charger_current_map[0])
+ if (curr < di->bm->chg_output_curr[0])
return 0;
- for (i = 0; i < ARRAY_SIZE(ab8500_charger_current_map); i++) {
- if (curr < ab8500_charger_current_map[i])
+ for (i = 0; i < di->bm->n_chg_out_curr; i++) {
+ if (curr < di->bm->chg_output_curr[i])
return i - 1;
}
/* If not last element, return error */
- i = ARRAY_SIZE(ab8500_charger_current_map) - 1;
- if (curr == ab8500_charger_current_map[i])
+ i = di->bm->n_chg_out_curr - 1;
+ if (curr == di->bm->chg_output_curr[i])
return i;
else
return -1;
}
-static int ab8500_vbus_in_curr_to_regval(int curr)
+static int ab8500_vbus_in_curr_to_regval(struct ab8500_charger *di, int curr)
{
int i;
- if (curr < ab8500_charger_vbus_in_curr_map[0])
+ if (curr < di->bm->chg_input_curr[0])
return 0;
- for (i = 0; i < ARRAY_SIZE(ab8500_charger_vbus_in_curr_map); i++) {
- if (curr < ab8500_charger_vbus_in_curr_map[i])
+ for (i = 0; i < di->bm->n_chg_in_curr; i++) {
+ if (curr < di->bm->chg_input_curr[i])
return i - 1;
}
/* If not last element, return error */
- i = ARRAY_SIZE(ab8500_charger_vbus_in_curr_map) - 1;
- if (curr == ab8500_charger_vbus_in_curr_map[i])
+ i = di->bm->n_chg_in_curr - 1;
+ if (curr == di->bm->chg_input_curr[i])
return i;
else
return -1;
@@ -1169,7 +1112,7 @@
int ich, int reg)
{
int ret = 0;
- int auto_curr_index, curr_index, prev_curr_index, shift_value, i;
+ int curr_index, prev_curr_index, shift_value, i;
u8 reg_value;
u32 step_udelay;
bool no_stepping = false;
@@ -1187,39 +1130,27 @@
case AB8500_MCH_IPT_CURLVL_REG:
shift_value = MAIN_CH_INPUT_CURR_SHIFT;
prev_curr_index = (reg_value >> shift_value);
- curr_index = ab8500_current_to_regval(ich);
+ curr_index = ab8500_current_to_regval(di, ich);
step_udelay = STEP_UDELAY;
if (!di->ac.charger_connected)
no_stepping = true;
break;
case AB8500_USBCH_IPT_CRNTLVL_REG:
- shift_value = VBUS_IN_CURR_LIM_SHIFT;
+ if (is_ab8540(di->parent))
+ shift_value = AB8540_VBUS_IN_CURR_LIM_SHIFT;
+ else
+ shift_value = VBUS_IN_CURR_LIM_SHIFT;
prev_curr_index = (reg_value >> shift_value);
- curr_index = ab8500_vbus_in_curr_to_regval(ich);
+ curr_index = ab8500_vbus_in_curr_to_regval(di, ich);
step_udelay = STEP_UDELAY * 100;
- ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
- AB8500_CH_USBCH_STAT2_REG, ®_value);
- if (ret < 0) {
- dev_err(di->dev, "%s read failed\n", __func__);
- goto exit_set_current;
- }
- auto_curr_index =
- reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT;
-
- dev_dbg(di->dev, "%s Auto VBUS curr is %d mA\n",
- __func__,
- ab8500_charger_vbus_in_curr_map[auto_curr_index]);
-
- prev_curr_index = min(prev_curr_index, auto_curr_index);
-
if (!di->usb.charger_connected)
no_stepping = true;
break;
case AB8500_CH_OPT_CRNTLVL_REG:
shift_value = 0;
prev_curr_index = (reg_value >> shift_value);
- curr_index = ab8500_current_to_regval(ich);
+ curr_index = ab8500_current_to_regval(di, ich);
step_udelay = STEP_UDELAY;
if (curr_index && (curr_index - prev_curr_index) > 1)
step_udelay *= 100;
@@ -1459,8 +1390,8 @@
/* Check if the requested voltage or current is valid */
volt_index = ab8500_voltage_to_regval(vset);
- curr_index = ab8500_current_to_regval(iset);
- input_curr_index = ab8500_current_to_regval(
+ curr_index = ab8500_current_to_regval(di, iset);
+ input_curr_index = ab8500_current_to_regval(di,
di->bm->chg_params->ac_curr_max);
if (volt_index < 0 || curr_index < 0 || input_curr_index < 0) {
dev_err(di->dev,
@@ -1631,7 +1562,7 @@
/* Check if the requested voltage or current is valid */
volt_index = ab8500_voltage_to_regval(vset);
- curr_index = ab8500_current_to_regval(ich_out);
+ curr_index = ab8500_current_to_regval(di, ich_out);
if (volt_index < 0 || curr_index < 0) {
dev_err(di->dev,
"Charger voltage or current too high, "
@@ -2396,18 +2327,21 @@
else
dev_dbg(di->dev, "Error reading USB link status\n");
- if (is_ab9540(di->parent) || is_ab8505(di->parent))
- link_status = AB8505_USB_LINK_STATUS;
- else
+ if (is_ab8500(di->parent))
link_status = AB8500_USB_LINK_STATUS;
+ else
+ link_status = AB8505_USB_LINK_STATUS;
if (detected_chargers & USB_PW_CONN) {
- if (((val & link_status) >> 3) == USB_STAT_NOT_VALID_LINK &&
+ if (((val & link_status) >> USB_LINK_STATUS_SHIFT) ==
+ USB_STAT_NOT_VALID_LINK &&
di->invalid_charger_detect_state == 0) {
- dev_dbg(di->dev, "Invalid charger detected, state= 0\n");
+ dev_dbg(di->dev,
+ "Invalid charger detected, state= 0\n");
/*Enable charger*/
abx500_mask_and_set_register_interruptible(di->dev,
- AB8500_CHARGER, AB8500_USBCH_CTRL1_REG, 0x01, 0x01);
+ AB8500_CHARGER, AB8500_USBCH_CTRL1_REG,
+ USB_CH_ENA, USB_CH_ENA);
/*Enable charger detection*/
abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x01);
@@ -2417,15 +2351,17 @@
}
if (di->invalid_charger_detect_state == 1) {
- dev_dbg(di->dev, "Invalid charger detected, state= 1\n");
+ dev_dbg(di->dev,
+ "Invalid charger detected, state= 1\n");
/*Stop charger detection*/
abx500_mask_and_set_register_interruptible(di->dev, AB8500_USB,
AB8500_MCH_IPT_CURLVL_REG, 0x01, 0x00);
/*Check link status*/
- ret = abx500_get_register_interruptible(di->dev, AB8500_USB,
+ ret = abx500_get_register_interruptible(di->dev,
+ AB8500_USB,
AB8500_USB_LINE_STAT_REG, &val);
dev_dbg(di->dev, "USB link status= 0x%02x\n",
- (val & link_status) >> 3);
+ (val & link_status) >> USB_LINK_STATUS_SHIFT);
di->invalid_charger_detect_state = 2;
}
} else {
@@ -2741,7 +2677,7 @@
{
struct ab8500_charger *di = container_of(work,
struct ab8500_charger, vbus_drop_end_work.work);
- int ret;
+ int ret, curr;
u8 reg_value;
di->flags.vbus_drop_end = false;
@@ -2749,32 +2685,41 @@
/* Reset the drop counter */
abx500_set_register_interruptible(di->dev,
AB8500_CHARGER, AB8500_CHARGER_CTRL, 0x01);
- ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
- AB8500_CH_USBCH_STAT2_REG,
- ®_value);
+
+ if (is_ab8540(di->parent))
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8540_CH_USBCH_STAT3_REG, ®_value);
+ else
+ ret = abx500_get_register_interruptible(di->dev, AB8500_CHARGER,
+ AB8500_CH_USBCH_STAT2_REG, ®_value);
if (ret < 0) {
- dev_err(di->dev, "%s ab8500 read failed\n", __func__);
- } else {
- int curr = ab8500_charger_vbus_in_curr_map[
+ dev_err(di->dev, "%s read failed\n", __func__);
+ return;
+ }
+
+ if (is_ab8540(di->parent))
+ curr = di->bm->chg_input_curr[
+ reg_value & AB8540_AUTO_VBUS_IN_CURR_MASK];
+ else
+ curr = di->bm->chg_input_curr[
reg_value >> AUTO_VBUS_IN_CURR_LIM_SHIFT];
- if (di->max_usb_in_curr.calculated_max != curr) {
- /* USB source is collapsing */
- di->max_usb_in_curr.calculated_max = curr;
- dev_dbg(di->dev,
- "VBUS input current limiting to %d mA\n",
- di->max_usb_in_curr.calculated_max);
- } else {
- /*
- * USB source can not give more than this amount.
- * Taking more will collapse the source.
- */
- di->max_usb_in_curr.set_max =
- di->max_usb_in_curr.calculated_max;
- dev_dbg(di->dev,
- "VBUS input current limited to %d mA\n",
- di->max_usb_in_curr.set_max);
- return;
- }
+
+ if (di->max_usb_in_curr.calculated_max != curr) {
+ /* USB source is collapsing */
+ di->max_usb_in_curr.calculated_max = curr;
+ dev_dbg(di->dev,
+ "VBUS input current limiting to %d mA\n",
+ di->max_usb_in_curr.calculated_max);
+ } else {
+ /*
+ * USB source can not give more than this amount.
+ * Taking more will collapse the source.
+ */
+ di->max_usb_in_curr.set_max =
+ di->max_usb_in_curr.calculated_max;
+ dev_dbg(di->dev,
+ "VBUS input current limited to %d mA\n",
+ di->max_usb_in_curr.set_max);
}
if (di->usb.charger_connected)
@@ -3134,9 +3079,14 @@
goto out;
}
- ret = abx500_set_register_interruptible(di->dev,
- AB8500_CHARGER,
- AB8500_CH_OPT_CRNTLVL_MAX_REG, CH_OP_CUR_LVL_1P6);
+ if (is_ab8540(di->parent))
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG,
+ CH_OP_CUR_LVL_2P);
+ else
+ ret = abx500_set_register_interruptible(di->dev,
+ AB8500_CHARGER, AB8500_CH_OPT_CRNTLVL_MAX_REG,
+ CH_OP_CUR_LVL_1P6);
if (ret) {
dev_err(di->dev,
"failed to set CH_OPT_CRNTLVL_MAX_REG\n");
@@ -3144,7 +3094,8 @@
}
}
- if (is_ab9540_2p0(di->parent) || is_ab8505_2p0(di->parent))
+ if (is_ab9540_2p0(di->parent) || is_ab9540_3p0(di->parent)
+ || is_ab8505_2p0(di->parent) || is_ab8540(di->parent))
ret = abx500_mask_and_set_register_interruptible(di->dev,
AB8500_CHARGER,
AB8500_USBCH_CTRL2_REG,
@@ -3250,7 +3201,8 @@
AB8500_RTC_CTRL1_REG,
bup_vch_range | vbup33_vrtcn);
if (ret) {
- dev_err(di->dev, "failed to setup backup battery charging\n");
+ dev_err(di->dev,
+ "failed to setup backup battery charging\n");
goto out;
}
}
@@ -3267,14 +3219,16 @@
AB8500_CHARGER, AB8540_USB_PP_MODE_REG,
BUS_VSYS_VOL_SELECT_MASK, BUS_VSYS_VOL_SELECT_3P6V);
if (ret) {
- dev_err(di->dev, "failed to setup usb power path vsys voltage\n");
+ dev_err(di->dev,
+ "failed to setup usb power path vsys voltage\n");
goto out;
}
ret = abx500_mask_and_set_register_interruptible(di->dev,
AB8500_CHARGER, AB8540_USB_PP_CHR_REG,
BUS_PP_PRECHG_CURRENT_MASK, 0);
if (ret) {
- dev_err(di->dev, "failed to setup usb power path prechage current\n");
+ dev_err(di->dev,
+ "failed to setup usb power path prechage current\n");
goto out;
}
}
@@ -3537,8 +3491,8 @@
di->ac_chg.ops.update_curr = &ab8500_charger_update_charger_current;
di->ac_chg.max_out_volt = ab8500_charger_voltage_map[
ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
- di->ac_chg.max_out_curr = ab8500_charger_current_map[
- ARRAY_SIZE(ab8500_charger_current_map) - 1];
+ di->ac_chg.max_out_curr =
+ di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1];
di->ac_chg.wdt_refresh = CHG_WD_INTERVAL;
di->ac_chg.enabled = di->bm->ac_enabled;
di->ac_chg.external = false;
@@ -3566,8 +3520,8 @@
di->usb_chg.ops.pre_chg_enable = &ab8540_charger_usb_pre_chg_enable;
di->usb_chg.max_out_volt = ab8500_charger_voltage_map[
ARRAY_SIZE(ab8500_charger_voltage_map) - 1];
- di->usb_chg.max_out_curr = ab8500_charger_current_map[
- ARRAY_SIZE(ab8500_charger_current_map) - 1];
+ di->usb_chg.max_out_curr =
+ di->bm->chg_output_curr[di->bm->n_chg_out_curr - 1];
di->usb_chg.wdt_refresh = CHG_WD_INTERVAL;
di->usb_chg.enabled = di->bm->usb_enabled;
di->usb_chg.external = false;