r3136 - trunk/src/target/kernel/patches
laforge at sita.openmoko.org
laforge at sita.openmoko.org
Tue Oct 9 19:26:45 CEST 2007
Author: laforge
Date: 2007-10-09 19:26:37 +0200 (Tue, 09 Oct 2007)
New Revision: 3136
Modified:
trunk/src/target/kernel/patches/gta02-core.patch
trunk/src/target/kernel/patches/pcf50633.patch
Log:
GTA02: implement USB battery charging control using pcf50633
Modified: trunk/src/target/kernel/patches/gta02-core.patch
===================================================================
--- trunk/src/target/kernel/patches/gta02-core.patch 2007-10-09 17:11:49 UTC (rev 3135)
+++ trunk/src/target/kernel/patches/gta02-core.patch 2007-10-09 17:26:37 UTC (rev 3136)
@@ -2,7 +2,7 @@
===================================================================
--- /dev/null
+++ linux-2.6.22.5-moko/arch/arm/mach-s3c2440/mach-gta02.c
-@@ -0,0 +1,666 @@
+@@ -0,0 +1,658 @@
+/*
+ * linux/arch/arm/mach-s3c2440/mach-gta02.c
+ *
@@ -128,11 +128,11 @@
+ switch (event) {
+ case PMU_EVT_INSERT:
+ case PMU_EVT_USB_INSERT:
-+ pcf50633_charge_fast(pcf50633_global, 1);
++ pcf50633_charge_enable(pcf50633_global, 1);
+ break;
+ case PMU_EVT_REMOVE:
+ case PMU_EVT_USB_REMOVE:
-+ pcf50633_charge_fast(pcf50633_global, 0);
++ pcf50633_charge_enable(pcf50633_global, 0);
+ break;
+ default:
+ break;
@@ -385,15 +385,7 @@
+
+static void __gta02_udc_vbus_draw(struct work_struct *work)
+{
-+ if (gta02_udc_vbus_drawer.ma >= 500) {
-+ /* enable fast charge */
-+ printk(KERN_DEBUG "udc: enabling fast charge\n");
-+ pcf50633_charge_fast(pcf50633_global, 1);
-+ } else {
-+ /* disable fast charge */
-+ printk(KERN_DEBUG "udc: disabling fast charge\n");
-+ pcf50633_charge_fast(pcf50633_global, 0);
-+ }
++ pcf50633_usb_curlim_set(pcf50633_global, gta02_udc_vbus_drawer.ma);
+}
+
+static void gta02_udc_vbus_draw(unsigned int ma)
Modified: trunk/src/target/kernel/patches/pcf50633.patch
===================================================================
--- trunk/src/target/kernel/patches/pcf50633.patch 2007-10-09 17:11:49 UTC (rev 3135)
+++ trunk/src/target/kernel/patches/pcf50633.patch 2007-10-09 17:26:37 UTC (rev 3136)
@@ -34,7 +34,7 @@
===================================================================
--- /dev/null
+++ linux-2.6.22.5-moko/drivers/i2c/chips/pcf50633.c
-@@ -0,0 +1,1716 @@
+@@ -0,0 +1,1736 @@
+/* Philips PCF50633 Power Management Unit (PMU) driver
+ *
+ * (C) 2006-2007 by OpenMoko, Inc.
@@ -105,9 +105,8 @@
+
+I2C_CLIENT_INSMOD_1(pcf50633);
+
-+#define PCF50633_F_CHG_FAST 0x00000001 /* Charger Fast allowed */
++#define PCF50633_F_CHG_ENABLED 0x00000001 /* Charger enabled */
+#define PCF50633_F_CHG_PRESENT 0x00000002 /* Charger present */
-+#define PCF50633_F_CHG_FOK 0x00000004 /* Fast OK for battery */
+#define PCF50633_F_CHG_ERR 0x00000008 /* Charger Error */
+#define PCF50633_F_CHG_PROT 0x00000010 /* Charger Protection */
+#define PCF50633_F_CHG_READY 0x00000020 /* Charging completed */
@@ -632,10 +631,12 @@
+ }
+ if (int3 & PCF50633_INT3_THLIMON) {
+ DEBUGPC("THLIMON ");
++ pcf->flags |= PCF50633_F_CHG_PROT;
+ /* FIXME: signal this to userspace */
+ }
+ if (int3 & PCF50633_INT3_THLIMOFF) {
+ DEBUGPC("THLIMOFF ");
++ pcf->flags &= ~PCF50633_F_CHG_PROT;
+ /* FIXME: signal this to userspace */
+ }
+ if (int3 & PCF50633_INT3_USBLIMON) {
@@ -857,34 +858,66 @@
+ * Charger Control
+ ***********************************************************************/
+
-+/* Enable/disable fast charging (500mA in the GTA02) */
-+void pcf50633_charge_fast(struct pcf50633_data *pcf, int on)
++/* Set maximum USB current limit */
++void pcf50633_usb_curlim_set(struct pcf50633_data *pcf, int ma)
+{
-+#if 0
-+ if (!(pcf->pdata->used_features & PCF50606_FEAT_MBC))
++ u_int8_t bits;
++
++ dev_dbg(&pcf->client.dev, "setting usb current limit to %d ma", ma);
++
++ 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;
++
++ reg_set_bit_mask(pcf, PCF50633_REG_MBCC7, PCF56033_MBCC7_USB_MASK,
++ bits);
++}
++EXPORT_SYMBOL_GPL(pcf50633_usb_curlim_set);
++
++static ssize_t show_usblim(struct device *dev, struct device_attribute *attr,
++ char *buf)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pcf50633_data *pcf = i2c_get_clientdata(client);
++ u_int8_t usblim = reg_read(pcf, PCF50633_REG_MBCC7) &
++ PCF56033_MBCC7_USB_MASK;
++ unsigned int ma;
++
++ if (usblim == PCF50633_MBCC7_USB_1000mA)
++ ma = 1000;
++ else if (usblim == PCF50633_MBCC7_USB_500mA)
++ ma = 500;
++ else if (usblim == PCF50633_MBCC7_USB_100mA)
++ ma = 100;
++ else
++ ma = 0;
++
++ return sprintf(buf, "%u\n", ma);
++}
++static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, NULL);
++
++/* Enable/disable charging */
++void pcf50633_charge_enable(struct pcf50633_data *pcf, int on)
++{
++ u_int8_t bits;
++
++ if (!(pcf->pdata->used_features & PCF50633_FEAT_MBC))
+ return;
+
+ if (on) {
-+ /* We can allow PCF to automatically charge
-+ * using Ifast */
-+ pcf->flags |= PCF50606_F_CHG_FAST;
-+ reg_set_bit_mask(pcf, PCF50606_REG_MBCC1,
-+ PCF50606_MBCC1_AUTOFST,
-+ PCF50606_MBCC1_AUTOFST);
++ pcf->flags |= PCF50633_F_CHG_ENABLED;
++ bits = PCF50633_MBCC1_CHGENA;
+ } else {
-+ pcf->flags &= ~PCF50606_F_CHG_FAST;
-+ /* disable automatic fast-charge */
-+ reg_clear_bits(pcf, PCF50606_REG_MBCC1,
-+ PCF50606_MBCC1_AUTOFST);
-+ /* switch to idle mode to abort existing charge
-+ * process */
-+ reg_set_bit_mask(pcf, PCF50606_REG_MBCC1,
-+ PCF50606_MBCC1_CHGMOD_MASK,
-+ PCF50606_MBCC1_CHGMOD_IDLE);
++ pcf->flags &= ~PCF50633_F_CHG_ENABLED;
++ bits = 0;
+ }
-+#endif
+}
-+EXPORT_SYMBOL_GPL(pcf50633_charge_fast);
++EXPORT_SYMBOL_GPL(pcf50633_charge_enable);
+
+#define ONE 1000000
+static inline u_int16_t adc_to_rntc(struct pcf50633_data *pcf, u_int16_t adc)
@@ -981,36 +1014,24 @@
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf50633_data *pcf = i2c_get_clientdata(client);
-+#if 0
-+ u_int8_t mbcc1 = reg_read(pcf, PCF50606_REG_MBCC1);
+
-+ mbcc1 &= ~PCF50606_MBCC1_CHGMOD_MASK;
++ /* As opposed to the PCF50606, we can only enable or disable
++ * charging and not directly jump into a certain mode! */
+
-+ if (!strcmp(buf, "qualification"))
-+ mbcc1 |= PCF50606_MBCC1_CHGMOD_QUAL;
-+ else if (!strcmp(buf, "pre"))
-+ mbcc1 |= PCF50606_MBCC1_CHGMOD_PRE;
-+ else if (!strcmp(buf, "trickle"))
-+ mbcc1 |= PCF50606_MBCC1_CHGMOD_TRICKLE;
-+ else if (!strcmp(buf, "fast_cccv"))
-+ mbcc1 |= PCF50606_MBCC1_CHGMOD_FAST_CCCV;
-+ /* We don't allow the other fast modes for security reasons */
-+ else if (!strcmp(buf, "idle"))
-+ mbcc1 |= PCF50606_MBCC1_CHGMOD_IDLE;
++ if (!strcmp(buf, "0\n"))
++ pcf50633_charge_enable(pcf, 0);
+ else
-+ return -EINVAL;
++ pcf50633_charge_enable(pcf, 1);
+
-+ reg_write(pcf, PCF50606_REG_MBCC1, mbcc1);
-+#endif
+ return count;
+}
+
+static DEVICE_ATTR(chgmode, S_IRUGO | S_IWUSR, show_chgmode, set_chgmode);
+
+static const char *chgstate_names[] = {
-+ [PCF50633_F_CHG_FAST] = "fast_enabled",
-+ [PCF50633_F_CHG_PRESENT] = "present",
-+ [PCF50633_F_CHG_FOK] = "fast_ok",
++ [PCF50633_F_CHG_ENABLED] = "enabled",
++ [PCF50633_F_CHG_PRESENT] = "charger_present",
++ [PCF50633_F_USB_PRESENT] = "usb_present",
+ [PCF50633_F_CHG_ERR] = "error",
+ [PCF50633_F_CHG_PROT] = "protection",
+ [PCF50633_F_CHG_READY] = "ready",
@@ -1021,7 +1042,7 @@
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf50633_data *pcf = i2c_get_clientdata(client);
-+#if 0
++
+ char *b = buf;
+ int i;
+
@@ -1033,8 +1054,6 @@
+ b += sprintf(b, "\n");
+
+ return b - buf;
-+#endif
-+ return 0;
+}
+static DEVICE_ATTR(chgstate, S_IRUGO | S_IWUSR, show_chgstate, NULL);
+
@@ -1323,7 +1342,7 @@
+};
+#endif
+
-+static struct attribute *pcf_sysfs_entries[17] = {
++static struct attribute *pcf_sysfs_entries[18] = {
+ &dev_attr_voltage_auto.attr,
+ &dev_attr_voltage_down1.attr,
+ &dev_attr_voltage_down2.attr,
@@ -1354,6 +1373,7 @@
+ if (pcf->pdata->used_features & PCF50633_FEAT_MBC) {
+ pcf_sysfs_entries[i++] = &dev_attr_chgstate.attr;
+ pcf_sysfs_entries[i++] = &dev_attr_chgmode.attr;
++ pcf_sysfs_entries[i++] = &dev_attr_usb_curlim.attr;
+ }
+
+ if (pcf->pdata->used_features & PCF50633_FEAT_CHGCUR)
@@ -1755,7 +1775,7 @@
===================================================================
--- /dev/null
+++ linux-2.6.22.5-moko/include/linux/pcf50633.h
-@@ -0,0 +1,110 @@
+@@ -0,0 +1,113 @@
+#ifndef _LINUX_PCF50633_H
+#define _LINUX_PCF50633_H
+
@@ -1810,6 +1830,9 @@
+ enum pcf50633_regulator_id reg, int on);
+
+extern void
++pcf50633_usb_curlim_set(struct pcf50633_data *pcf, int ma);
++
++extern void
+pcf50633_charge_fast(struct pcf50633_data *pcf, int on);
+
+/* FIXME: sharded with pcf50606 */
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