diff options
Diffstat (limited to 'arch/arm/plat-s3c24xx')
| -rw-r--r-- | arch/arm/plat-s3c24xx/neo1973_pm_gsm.c | 132 |
1 files changed, 71 insertions, 61 deletions
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c index c493018b737..63591cdff6f 100644 --- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c +++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c @@ -92,75 +92,78 @@ out_1: return strlcpy(buf, "1\n", 3); } -static ssize_t gsm_write(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static void gsm_on_off(struct device *dev, int on) { - unsigned long on = simple_strtoul(buf, NULL, 10); + if (!on) { + /* do not drive into powered-down GSM side */ + s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPIO_INPUT); + s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPIO_INPUT); - if (!strcmp(attr->attr.name, "power_on")) { - if (on) { - if (gta01_gsm.con) { - dev_dbg(dev, "powering up GSM, thus " - "disconnecting serial console\n"); + if (machine_is_neo1973_gta02()) + pcf50633_gpio_set(gta02_pcf, PCF50633_GPIO2, 0); - console_stop(gta01_gsm.con); - s3c24xx_serial_console_set_silence(1); - } + if (gta01_gsm.gpio_ngsm_en) + s3c2410_gpio_setpin(gta01_gsm.gpio_ngsm_en, 1); - if (gta01_gsm.gpio_ngsm_en) - s3c2410_gpio_setpin(gta01_gsm.gpio_ngsm_en, 0); - - if (machine_is_neo1973_gta02()) { - switch (system_rev) { - case GTA02v2_SYSTEM_REV: - case GTA02v3_SYSTEM_REV: - case GTA02v4_SYSTEM_REV: - case GTA02v5_SYSTEM_REV: - case GTA02v6_SYSTEM_REV: - pcf50633_gpio_set(gta02_pcf, - PCF50633_GPIO2, 7); - break; - } - } - msleep(100); + if (gta01_gsm.con) { + s3c24xx_serial_console_set_silence(0); + console_start(gta01_gsm.con); - neo1973_gpb_setpin(GTA01_GPIO_MODEM_ON, 1); - msleep(500); - neo1973_gpb_setpin(GTA01_GPIO_MODEM_ON, 0); + dev_dbg(dev, "powered down GTA01 GSM, enabling " + "serial console\n"); + } - /* workaround for calypso firmware moko10 and earlier, - without this it will leave IRQ line high after booting */ - s3c2410_gpio_setpin(S3C2410_GPH1, 1); - s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP); - msleep(1000); - s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0); - } else { - /* FIXME should all GPIOs connected to the modem be tri-stated? */ - if (machine_is_neo1973_gta02()) { - switch (system_rev) { - case GTA02v2_SYSTEM_REV: - case GTA02v3_SYSTEM_REV: - case GTA02v4_SYSTEM_REV: - case GTA02v5_SYSTEM_REV: - case GTA02v6_SYSTEM_REV: - pcf50633_gpio_set(gta02_pcf, - PCF50633_GPIO2, 0); - break; - } - } + return; + } - if (gta01_gsm.gpio_ngsm_en) - s3c2410_gpio_setpin(gta01_gsm.gpio_ngsm_en, 1); + if (gta01_gsm.con) { + dev_dbg(dev, "powering up GSM, thus " + "disconnecting serial console\n"); - if (gta01_gsm.con) { - s3c24xx_serial_console_set_silence(0); - console_start(gta01_gsm.con); + console_stop(gta01_gsm.con); + s3c24xx_serial_console_set_silence(1); + } - dev_dbg(dev, "powered down GSM, thus enabling " - "serial console\n"); - } - } - } else if (!strcmp(attr->attr.name, "download")) { + /* allow UART to talk to GSM side now we will power it */ + s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0); + s3c2410_gpio_cfgpin(S3C2410_GPH2, S3C2410_GPH2_TXD0); + + if (gta01_gsm.gpio_ngsm_en) + s3c2410_gpio_setpin(gta01_gsm.gpio_ngsm_en, 0); + + if (machine_is_neo1973_gta02()) + pcf50633_gpio_set(gta02_pcf, PCF50633_GPIO2, 7); + + msleep(100); + + neo1973_gpb_setpin(GTA01_GPIO_MODEM_ON, 1); + msleep(500); + neo1973_gpb_setpin(GTA01_GPIO_MODEM_ON, 0); + + /* + * workaround for calypso firmware moko10 and earlier, + * without this it will leave IRQ line high after + * booting + */ + s3c2410_gpio_setpin(S3C2410_GPH1, 1); + s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_OUTP); + msleep(1000); + s3c2410_gpio_cfgpin(S3C2410_GPH1, S3C2410_GPH1_nRTS0); + +} + +static ssize_t gsm_write(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + unsigned long on = simple_strtoul(buf, NULL, 10); + + if (!strcmp(attr->attr.name, "power_on")) { + gsm_on_off(dev, on); + + return count; + } + + if (!strcmp(attr->attr.name, "download")) { if (machine_is_neo1973_gta01()) s3c2410_gpio_setpin(GTA01_GPIO_MODEM_DNLOAD, on); @@ -187,7 +190,11 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr, gta01_gsm.gpio_ndl_gsm = !on; s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, !on); } - } else if (!strcmp(attr->attr.name, "flowcontrolled")) { + + return count; + } + + if (!strcmp(attr->attr.name, "flowcontrolled")) { if (on) { gta_gsm_interrupts = 0; s3c2410_gpio_setpin(S3C2410_GPH1, 1); @@ -325,6 +332,9 @@ static int __init gta01_gsm_probe(struct platform_device *pdev) if (machine_is_neo1973_gta02()) s3c2410_gpio_setpin(GTA02_GPIO_nDL_GSM, 1); + /* GSM is to be initially off (at boot, or if this module inserted) */ + gsm_on_off(&pdev->dev, 0); + return sysfs_create_group(&pdev->dev.kobj, >a01_gsm_attr_group); } |