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From be0f111b3d1570dec174ff301d08bad995ccf1e6 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@openmoko.com>
Date: Tue, 22 Jul 2008 22:17:15 +0100
Subject: [PATCH] fix-pcf50633-only-do-platform-callback-once-per-event.patch
Reported-by: Holger Freyther <zecke@openmoko.org>
We harmlessly repeated PMU platform callbacks about charging state twice.
Clean it up and leave it to pcf50633_charge_enable() to report once.
Also tidies the sequencing so we set current limit before we enable
charger now.
Signed-off-by: Andy Green <andy@openmoko.com>
---
drivers/i2c/chips/pcf50633.c | 35 ++++++++++++++++-------------------
1 files changed, 16 insertions(+), 19 deletions(-)
diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
index bd47ebc..98c254c 100644
--- a/drivers/i2c/chips/pcf50633.c
+++ b/drivers/i2c/chips/pcf50633.c
@@ -1392,6 +1392,7 @@ static DEVICE_ATTR(voltage_hcldo, S_IRUGO | S_IWUSR, show_vreg, set_vreg);
static void pcf50633_usb_curlim_set(struct pcf50633_data *pcf, int ma)
{
u_int8_t bits;
+ int active = 0;
pcf->last_curlim_set = ma;
@@ -1407,30 +1408,26 @@ static void pcf50633_usb_curlim_set(struct pcf50633_data *pcf, int ma)
else
bits = PCF50633_MBCC7_USB_SUSPEND;
- DEBUGPC("pcf50633_usb_curlim_set -> %dmA\n", ma);
-
- if (!pcf->pdata->cb)
- goto set_it;
+ /* set the nearest charging limit */
+ reg_set_bit_mask(pcf, PCF50633_REG_MBCC7, PCF56033_MBCC7_USB_MASK,
+ bits);
+ /* with this charging limit, is charging actually meaningful? */
switch (bits) {
- case PCF50633_MBCC7_USB_100mA:
- case PCF50633_MBCC7_USB_SUSPEND:
- /* no charging is gonna be happening */
- pcf->pdata->cb(&pcf->client.dev,
- PCF50633_FEAT_MBC, PMU_EVT_CHARGER_IDLE);
- pcf50633_charge_enable(pcf50633_global, 0);
+ case PCF50633_MBCC7_USB_500mA:
+ case PCF50633_MBCC7_USB_1000mA:
+ /* yes with this charging limit, we can do real charging */
+ active = 1;
break;
- default: /* right charging context that if there is power, we charge */
- if (pcf->flags & PCF50633_F_USB_PRESENT)
- pcf->pdata->cb(&pcf->client.dev,
- PCF50633_FEAT_MBC, PMU_EVT_CHARGER_ACTIVE);
- pcf50633_charge_enable(pcf50633_global, 1);
+ default:
+ /* no charging is gonna be happening */
break;
}
-
-set_it:
- reg_set_bit_mask(pcf, PCF50633_REG_MBCC7, PCF56033_MBCC7_USB_MASK,
- bits);
+ /*
+ * enable or disable charging according to current limit -- this will
+ * also throw a platform notification callback about it
+ */
+ pcf50633_charge_enable(pcf50633_global, active);
/* clear batfull */
reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
--
1.5.6.5
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