diff options
Diffstat (limited to 'drivers/mxc/thermal/thermal.c')
| -rw-r--r-- | drivers/mxc/thermal/thermal.c | 79 |
1 files changed, 57 insertions, 22 deletions
diff --git a/drivers/mxc/thermal/thermal.c b/drivers/mxc/thermal/thermal.c index 7855e9fb2e9a..80c2933d4783 100644 --- a/drivers/mxc/thermal/thermal.c +++ b/drivers/mxc/thermal/thermal.c @@ -132,9 +132,9 @@ #define KELVIN_TO_CEL(t, off) (((t) - (off))) #define CEL_TO_KELVIN(t, off) (((t) + (off))) -#define DEFAULT_RAW_25C 1469 -#define DEFAULT_RAW_HOT 1375 -#define DEFAULT_TEMP_HOT 90 +#define DEFAULT_RAW_25C 1440 +#define DEFAULT_RAW_HOT 1240 +#define DEFAULT_TEMP_HOT 125 #define ANATOP_DEBUG false #define THERMAL_FUSE_NAME "/sys/fsl_otp/HW_OCOTP_ANA1" @@ -180,6 +180,10 @@ MODULE_PARM_DESC(temps, "Temperature trip points in degrees K (active,hot,critic #define _TEMP_HOT temps[ANATOP_TRIPS_POINT_HOT] #define _TEMP_ACTIVE temps[ANATOP_TRIPS_POINT_ACTIVE] +static char fusedata[32] = {0}; +module_param_string(fusedata, fusedata, sizeof(fusedata), + S_IRUGO | S_IWUSR | S_IWGRP); + /* functions */ static int anatop_thermal_add(struct anatop_device *device); static int anatop_thermal_remove(struct platform_device *pdev); @@ -301,23 +305,11 @@ int cvt_celius_to_raw(int celius) return raw_25c - change; } -static int anatop_thermal_get_temp(struct thermal_zone_device *thermal, - long *temp) +static int anatop_read_raw(void) { - struct anatop_thermal *tz = thermal->devdata; unsigned int tmp; unsigned int reg; - if (!tz) - return -EINVAL; - - if (!raw_25c || suspend_flag) { - *temp = KELVIN_TO_CEL(_TEMP_ACTIVE, KELVIN_OFFSET); - return 0; - } - - tz->last_temperature = tz->temperature; - if ((__raw_readl(anatop_base + HW_ANADIG_TEMPSENSE0) & BM_ANADIG_TEMPSENSE0_POWER_DOWN) != 0) { /* need to keep sensor power up as we enable alarm @@ -354,6 +346,28 @@ static int anatop_thermal_get_temp(struct thermal_zone_device *thermal, if (ANATOP_DEBUG) anatop_dump_temperature_register(); + + return tmp; +} + +static int anatop_thermal_get_temp(struct thermal_zone_device *thermal, + long *temp) +{ + struct anatop_thermal *tz = thermal->devdata; + unsigned int tmp; + + if (!tz) + return -EINVAL; + + if (!raw_25c || suspend_flag) { + *temp = KELVIN_TO_CEL(_TEMP_ACTIVE, KELVIN_OFFSET); + return 0; + } + + tz->last_temperature = tz->temperature; + + tmp = anatop_read_raw(); + /* only the temp between -40C and 125C is valid, this is for save */ tz->temperature = cvt_raw_to_celius(tmp); @@ -721,6 +735,14 @@ static struct thermal_zone_device_ops anatop_thermal_zone_ops = { .notify = anatop_thermal_notify, }; +static ssize_t thermal_raw_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "0x%x", anatop_read_raw()); +} + +static DEVICE_ATTR(raw, 0644, thermal_raw_show, NULL); + static int anatop_thermal_register_thermal_zone(struct anatop_thermal *tz) { int trips = 0; @@ -929,7 +951,7 @@ static int anatop_thermal_probe(struct platform_device *pdev) struct resource *res_io, *res_irq, *res_calibration; void __iomem *base, *calibration_addr; struct anatop_device *device; - unsigned fuse_data; + unsigned long fuse_data; device = kzalloc(sizeof(*device), GFP_KERNEL); if (!device) { @@ -973,11 +995,20 @@ static int anatop_thermal_probe(struct platform_device *pdev) } /* use calibration data to get ratio */ - fuse_data = __raw_readl(calibration_addr); -#if 1 - if (!fuse_data) - fuse_data = (0x552 << 8) | 58 | (0x58e << 20); -#endif + if (fusedata[0] && !kstrtoul(fusedata, 16, &fuse_data)) + dev_err(&pdev->dev, "fuse data: %s(%lx) from cmdline\n", + fusedata, fuse_data); + else { + fuse_data = __raw_readl(calibration_addr); + if (0 == fuse_data) { + dev_err(&pdev->dev, + "invalid fuse data, use defaults\n"); + fuse_data = DEFAULT_TEMP_HOT + | (DEFAULT_RAW_HOT<<8) + | (DEFAULT_RAW_25C<<20); + } + } + dev_info(&pdev->dev, "fuse data: 0x%08lx\n", fuse_data); anatop_thermal_counting_ratio(fuse_data); res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); @@ -994,6 +1025,8 @@ static int anatop_thermal_probe(struct platform_device *pdev) anatop_thermal_cpufreq_init(); pr_info("%s: default cooling device is cpufreq!\n", __func__); + if (device_create_file(&pdev->dev, &dev_attr_raw)) + printk(KERN_INFO "%s: error creating raw node\n", __func__); goto success; anatop_failed: kfree(device); @@ -1012,6 +1045,8 @@ static int anatop_thermal_remove(struct platform_device *pdev) tz = platform_get_drvdata(pdev); + device_remove_file(&pdev->dev, &dev_attr_raw); + anatop_thermal_unregister_thermal_zone(tz); mutex_destroy(&tz->lock); |