diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.26/0182-fix-pcf50633-migrate-gta02-peripherals-out.patch.patch')
| -rwxr-xr-x | target/linux/s3c24xx/patches-2.6.26/0182-fix-pcf50633-migrate-gta02-peripherals-out.patch.patch | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/0182-fix-pcf50633-migrate-gta02-peripherals-out.patch.patch b/target/linux/s3c24xx/patches-2.6.26/0182-fix-pcf50633-migrate-gta02-peripherals-out.patch.patch new file mode 100755 index 0000000000..0184f8ff6b --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.26/0182-fix-pcf50633-migrate-gta02-peripherals-out.patch.patch @@ -0,0 +1,220 @@ +From d74710dd508eb1b60b410048a151e1d541d749d2 Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Fri, 25 Jul 2008 23:06:15 +0100 +Subject: [PATCH] fix-pcf50633-migrate-gta02-peripherals-out.patch + +pcf50633.c shouldn't know GTAxx at all. Move to using a +platform callback to allow definition of platform devices +with pcf50633 as parent device (good for enforcing suspend / +resume ordering). Remove all code references to GTAxx from +the sources (one string left for compatability). + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + arch/arm/mach-s3c2440/mach-gta02.c | 30 ++++++++++++++++++- + drivers/i2c/chips/pcf50633.c | 57 ++++++++++++++++++----------------- + include/linux/pcf50633.h | 9 +++++- + 3 files changed, 66 insertions(+), 30 deletions(-) + +diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c +index 309e484..fd746fd 100644 +--- a/arch/arm/mach-s3c2440/mach-gta02.c ++++ b/arch/arm/mach-s3c2440/mach-gta02.c +@@ -464,6 +464,29 @@ static int pmu_callback(struct device *dev, unsigned int feature, + return 0; + } + ++static struct platform_device gta01_pm_gps_dev = { ++ .name = "neo1973-pm-gps", ++}; ++ ++static struct platform_device gta01_pm_bt_dev = { ++ .name = "neo1973-pm-bt", ++}; ++ ++/* this is called when pc50633 is probed, unfortunately quite late in the ++ * day since it is an I2C bus device. Here we can belatedly define some ++ * platform devices with the advantage that we can mark the pcf50633 as the ++ * parent. This makes them get suspended and resumed with their parent ++ * the pcf50633 still around. ++ */ ++ ++static void gta02_pcf50633_attach_child_devices(struct device *parent_device) ++{ ++ gta01_pm_gps_dev.dev.parent = parent_device; ++ gta01_pm_bt_dev.dev.parent = parent_device; ++ platform_device_register(>a01_pm_bt_dev); ++ platform_device_register(>a01_pm_gps_dev); ++} ++ + static struct pcf50633_platform_data gta02_pcf_pdata = { + .used_features = PCF50633_FEAT_MBC | + PCF50633_FEAT_BBC | +@@ -478,6 +501,7 @@ static struct pcf50633_platform_data gta02_pcf_pdata = { + .r_fix_batt = 10000, + .r_fix_batt_par = 10000, + .r_sense_milli = 220, ++ .flag_use_apm_emulation = 0, + .resumers = { + [0] = PCF50633_INT1_USBINS | + PCF50633_INT1_USBREM | +@@ -577,7 +601,9 @@ static struct pcf50633_platform_data gta02_pcf_pdata = { + }, + }, + .defer_resume_backlight = 1, +- .resume_backlight_ramp_speed = 5 ++ .resume_backlight_ramp_speed = 5, ++ .attach_child_devices = gta02_pcf50633_attach_child_devices ++ + }; + + #if 0 /* currently unused */ +@@ -772,6 +798,7 @@ struct platform_device s3c24xx_pwm_device = { + .num_resources = 0, + }; + ++ + static struct platform_device *gta02_devices[] __initdata = { + &s3c_device_usb, + &s3c_device_wdt, +@@ -786,6 +813,7 @@ static struct platform_device *gta02_devices[] __initdata = { + >a02_version_device, + >a02_resume_reason_device, + &s3c24xx_pwm_device, ++ + }; + + static struct s3c2410_nand_set gta02_nand_sets[] = { +diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c +index 6745993..850bf93 100644 +--- a/drivers/i2c/chips/pcf50633.c ++++ b/drivers/i2c/chips/pcf50633.c +@@ -50,7 +50,6 @@ + #include <linux/jiffies.h> + + #include <asm/mach-types.h> +-#include <asm/arch/gta02.h> + + #include "pcf50633.h" + #include <linux/resume-dependency.h> +@@ -2004,18 +2003,6 @@ static DEVICE_ATTR(dump_regs, 0400, show_dump_regs, NULL); + * Driver initialization + ***********************************************************************/ + +-#ifdef CONFIG_MACH_NEO1973_GTA02 +-/* We currently place those platform devices here to make sure the device +- * suspend/resume order is correct */ +-static struct platform_device gta01_pm_gps_dev = { +- .name = "neo1973-pm-gps", +-}; +- +-static struct platform_device gta01_pm_bt_dev = { +- .name = "neo1973-pm-bt", +-}; +-#endif +- + /* + * CARE! This table is modified at runtime! + */ +@@ -2209,14 +2196,15 @@ static int pcf50633_detect(struct i2c_adapter *adapter, int address, int kind) + apm_get_power_status = pcf50633_get_power_status; + data->probe_completed = 1; + +-#ifdef CONFIG_MACH_NEO1973_GTA02 +- if (machine_is_neo1973_gta02()) { +- gta01_pm_gps_dev.dev.parent = &new_client->dev; +- gta01_pm_bt_dev.dev.parent = &new_client->dev; +- platform_device_register(>a01_pm_bt_dev); +- platform_device_register(>a01_pm_gps_dev); +- } +-#endif ++ if (data->pdata->flag_use_apm_emulation) ++ apm_get_power_status = pcf50633_get_power_status; ++ ++ /* if platform was interested, give him a chance to register ++ * platform devices that switch power with us as the parent ++ * at registration time -- ensures suspend / resume ordering ++ */ ++ if (data->pdata->attach_child_devices) ++ (data->pdata->attach_child_devices)(&new_client->dev); + + return 0; + exit_rtc: +@@ -2261,13 +2249,6 @@ static int pcf50633_detach_client(struct i2c_client *client) + if (pcf->pdata->used_features & PCF50633_FEAT_RTC) + rtc_device_unregister(pcf->rtc); + +-#ifdef CONFIG_MACH_NEO1973_GTA02 +- if (machine_is_neo1973_gta02()) { +- platform_device_unregister(>a01_pm_bt_dev); +- platform_device_unregister(>a01_pm_gps_dev); +- } +-#endif +- + sysfs_remove_group(&client->dev.kobj, &pcf_attr_group); + + pm_power_off = NULL; +@@ -2465,6 +2446,26 @@ int pcf50633_ready(struct pcf50633_data *pcf) + } + EXPORT_SYMBOL_GPL(pcf50633_ready); + ++int pcf50633_wait_for_ready(struct pcf50633_data *pcf, int timeout_ms, ++ char *name) ++{ ++ /* so we always go once */ ++ timeout_ms += 5; ++ ++ while ((timeout_ms >= 5) && (pcf50633_ready(pcf))) { ++ timeout_ms -= 5; /* well, it isn't very accurate, but OK */ ++ msleep(5); ++ } ++ ++ if (timeout_ms < 5) { ++ printk(KERN_ERR"pcf50633_wait_for_ready: " ++ "%s BAILING on timeout\n", name); ++ return -EBUSY; ++ } ++ ++ return 0; ++} ++EXPORT_SYMBOL_GPL(pcf50633_wait_for_ready); + + /* + * if backlight resume is selected to be deferred by platform, then it +diff --git a/include/linux/pcf50633.h b/include/linux/pcf50633.h +index b94b72a..4653285 100644 +--- a/include/linux/pcf50633.h ++++ b/include/linux/pcf50633.h +@@ -132,7 +132,9 @@ pcf50633_register_resume_dependency(struct pcf50633_data *pcf, + extern int + pcf50633_notify_usb_current_limit_change(struct pcf50633_data *pcf, + unsigned int ma); +- ++extern int ++pcf50633_wait_for_ready(struct pcf50633_data *pcf, int timeout_ms, ++ char *name); + + /* 0 = initialized and resumed and ready to roll, !=0 = either not + * initialized or not resumed yet +@@ -155,6 +157,10 @@ struct pcf50633_platform_data { + unsigned int onkey_seconds_sig_init; + unsigned int onkey_seconds_shutdown; + ++ /* callback to attach platform children (to enforce suspend / resume ++ * ordering */ ++ void (*attach_child_devices)(struct device *parent_device); ++ + /* voltage regulator related */ + struct pmu_voltage_rail rails[__NUM_PCF50633_REGULATORS]; + unsigned int used_regulators; +@@ -163,6 +169,7 @@ struct pcf50633_platform_data { + unsigned int r_fix_batt; + unsigned int r_fix_batt_par; + unsigned int r_sense_milli; ++ int flag_use_apm_emulation; + + unsigned char resumers[5]; + +-- +1.5.6.3 + |