litmus-rt.git - The LITMUS^RT kernel.

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author	John Johansen <john.johansen@canonical.com>	2010-10-09 03:47:53 -0400
committer	James Morris <jmorris@namei.org>	2010-10-20 19:12:46 -0400
commit	3ed02ada2a5e695e2fbb5e4a0008cfcb0f50feaa (patch)
tree	8b01e83cfa6b18fe8b83b342733931d5f98bc1b2 /security/selinux/exports.c
parent	9f1c1d426b0402b25cd0d7ca719ffc8e20e46d5f (diff)

AppArmor: Ensure the size of the copy is < the buffer allocated to hold it

Actually I think in this case the appropriate thing to do is to BUG as there is currently a case (remove) where the alloc_size needs to be larger than the copy_size, and if copy_size is ever greater than alloc_size there is a mistake in the caller code. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees.cook@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>

Diffstat (limited to 'security/selinux/exports.c')

0 files changed, 0 insertions, 0 deletions

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/* * vt1211.c - driver for the VIA VT1211 Super-I/O chip integrated hardware * monitoring features * Copyright (C) 2006 Juerg Haefliger <juergh@gmail.com> * * This driver is based on the driver for kernel 2.4 by Mark D. Studebaker * and its port to kernel 2.6 by Lars Ekman. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/hwmon-vid.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/ioport.h> #include <linux/acpi.h> #include <asm/io.h> static int uch_config = -1; module_param(uch_config, int, 0); MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration"); static int int_mode = -1; module_param(int_mode, int, 0); MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode"); static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(force_id, "Override the detected device ID"); static struct platform_device *pdev; #define DRVNAME "vt1211" /* --------------------------------------------------------------------- * Registers * * The sensors are defined as follows. * * Sensor Voltage Mode Temp Mode Notes (from the datasheet) * -------- ------------ --------- -------------------------- * Reading 1 temp1 Intel thermal diode * Reading 3 temp2 Internal thermal diode * UCH1/Reading2 in0 temp3 NTC type thermistor * UCH2 in1 temp4 +2.5V * UCH3 in2 temp5 VccP * UCH4 in3 temp6 +5V * UCH5 in4 temp7 +12V * 3.3V in5 Internal VDD (+3.3V) * * --------------------------------------------------------------------- */ /* Voltages (in) numbered 0-5 (ix) */ #define VT1211_REG_IN(ix) (0x21 + (ix)) #define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0x3e : 0x2a + 2 * (ix)) #define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0x3d : 0x29 + 2 * (ix)) /* Temperatures (temp) numbered 0-6 (ix) */ static u8 regtemp[] = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25}; static u8 regtempmax[] = {0x39, 0x1d, 0x3d, 0x2b, 0x2d, 0x2f, 0x31}; static u8 regtemphyst[] = {0x3a, 0x1e, 0x3e, 0x2c, 0x2e, 0x30, 0x32}; /* Fans numbered 0-1 (ix) */ #define VT1211_REG_FAN(ix) (0x29 + (ix)) #define VT1211_REG_FAN_MIN(ix) (0x3b + (ix)) #define VT1211_REG_FAN_DIV 0x47 /* PWMs numbered 0-1 (ix) */ /* Auto points numbered 0-3 (ap) */ #define VT1211_REG_PWM(ix) (0x60 + (ix)) #define VT1211_REG_PWM_CLK 0x50 #define VT1211_REG_PWM_CTL 0x51 #define VT1211_REG_PWM_AUTO_TEMP(ap) (0x55 - (ap)) #define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0x58 + 2 * (ix) - (ap)) /* Miscellaneous registers */ #define VT1211_REG_CONFIG 0x40 #define VT1211_REG_ALARM1 0x41 #define VT1211_REG_ALARM2 0x42 #define VT1211_REG_VID 0x45 #define VT1211_REG_UCH_CONFIG 0x4a #define VT1211_REG_TEMP1_CONFIG 0x4b #define VT1211_REG_TEMP2_CONFIG 0x4c /* In, temp & fan alarm bits */ static const u8 bitalarmin[] = {11, 0, 1, 3, 8, 2, 9}; static const u8 bitalarmtemp[] = {4, 15, 11, 0, 1, 3, 8}; static const u8 bitalarmfan[] = {6, 7}; /* --------------------------------------------------------------------- * Data structures and manipulation thereof * --------------------------------------------------------------------- */ struct vt1211_data { unsigned short addr; const char *name; struct device *hwmon_dev; struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ /* Register values */ u8 in[6]; u8 in_max[6]; u8 in_min[6]; u8 temp[7]; u8 temp_max[7]; u8 temp_hyst[7]; u8 fan[2]; u8 fan_min[2]; u8 fan_div[2]; u8 fan_ctl; u8 pwm[2]; u8 pwm_ctl[2]; u8 pwm_clk; u8 pwm_auto_temp[4]; u8 pwm_auto_pwm[2][4]; u8 vid; /* Read once at init time */ u8 vrm; u8 uch_config; /* Read once at init time */ u16 alarms; }; /* ix = [0-5] */ #define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \ !(((uch_config) >> ((ix) + 2)) & 1)) /* ix = [0-6] */ #define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \ ((uch_config) >> (ix)) & 1) /* in5 (ix = 5) is special. It's the internal 3.3V so it's scaled in the driver according to the VT1211 BIOS porting guide */ #define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \ (((reg) - 3) * 15882 + 479) / 958 : \ (((reg) - 3) * 10000 + 479) / 958) #define IN_TO_REG(ix, val) (SENSORS_LIMIT((ix) == 5 ? \ ((val) * 958 + 7941) / 15882 + 3 : \ ((val) * 958 + 5000) / 10000 + 3, 0, 255)) /* temp1 (ix = 0) is an intel thermal diode which is scaled in user space. temp2 (ix = 1) is the internal temp diode so it's scaled in the driver according to some measurements that I took on an EPIA M10000. temp3-7 are thermistor based so the driver returns the voltage measured at the pin (range 0V - 2.2V). */ #define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \ (ix) == 1 ? (reg) < 51 ? 0 : \ ((reg) - 51) * 1000 : \ ((253 - (reg)) * 2200 + 105) / 210) #define TEMP_TO_REG(ix, val) SENSORS_LIMIT( \ ((ix) == 0 ? ((val) + 500) / 1000 : \ (ix) == 1 ? ((val) + 500) / 1000 + 51 : \ 253 - ((val) * 210 + 1100) / 2200), 0, 255) #define DIV_FROM_REG(reg) (1 << (reg)) #define RPM_FROM_REG(reg, div) (((reg) == 0) || ((reg) == 255) ? 0 : \ 1310720 / (reg) / DIV_FROM_REG(div)) #define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \ SENSORS_LIMIT((1310720 / (val) / \ DIV_FROM_REG(div)), 1, 254)) /* --------------------------------------------------------------------- * Super-I/O constants and functions * --------------------------------------------------------------------- */ /* Configuration index port registers * The vt1211 can live at 2 different addresses so we need to probe both */ #define SIO_REG_CIP1 0x2e #define SIO_REG_CIP2 0x4e /* Configuration registers */ #define SIO_VT1211_LDN 0x07 /* logical device number */ #define SIO_VT1211_DEVID 0x20 /* device ID */ #define SIO_VT1211_DEVREV 0x21 /* device revision */ #define SIO_VT1211_ACTIVE 0x30 /* HW monitor active */ #define SIO_VT1211_BADDR 0x60 /* base I/O address */ #define SIO_VT1211_ID 0x3c /* VT1211 device ID */ /* VT1211 logical device numbers */ #define SIO_VT1211_LDN_HWMON 0x0b /* HW monitor */ static inline void superio_outb(int sio_cip, int reg, int val) { outb(reg, sio_cip); outb(val, sio_cip + 1); } static inline int superio_inb(int sio_cip, int reg) { outb(reg, sio_cip); return inb(sio_cip + 1); } static inline void superio_select(int sio_cip, int ldn) { outb(SIO_VT1211_LDN, sio_cip); outb(ldn, sio_cip + 1); } static inline void superio_enter(int sio_cip) { outb(0x87, sio_cip); outb(0x87, sio_cip); } static inline void superio_exit(int sio_cip) { outb(0xaa, sio_cip); } /* --------------------------------------------------------------------- * Device I/O access * --------------------------------------------------------------------- */ static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg) { return inb(data->addr + reg); } static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val) { outb(val, data->addr + reg); } static struct vt1211_data *vt1211_update_device(struct device *dev) { struct vt1211_data *data = dev_get_drvdata(dev); int ix, val; mutex_lock(&data->update_lock); /* registers cache is refreshed after 1 second */ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { /* read VID */ data->vid = vt1211_read8(data, VT1211_REG_VID) & 0x1f; /* voltage (in) registers */ for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) { if (ISVOLT(ix, data->uch_config)) { data->in[ix] = vt1211_read8(data, VT1211_REG_IN(ix)); data->in_min[ix] = vt1211_read8(data, VT1211_REG_IN_MIN(ix)); data->in_max[ix] = vt1211_read8(data, VT1211_REG_IN_MAX(ix)); } } /* temp registers */ for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) { if (ISTEMP(ix, data->uch_config)) { data->temp[ix] = vt1211_read8(data, regtemp[ix]); data->temp_max[ix] = vt1211_read8(data, regtempmax[ix]); data->temp_hyst[ix] = vt1211_read8(data, regtemphyst[ix]); } } /* fan & pwm registers */ for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) { data->fan[ix] = vt1211_read8(data, VT1211_REG_FAN(ix)); data->fan_min[ix] = vt1211_read8(data, VT1211_REG_FAN_MIN(ix)); data->pwm[ix] = vt1211_read8(data, VT1211_REG_PWM(ix)); } val = vt1211_read8(data, VT1211_REG_FAN_DIV); data->fan_div[0] = (val >> 4) & 3; data->fan_div[1] = (val >> 6) & 3; data->fan_ctl = val & 0xf; val = vt1211_read8(data, VT1211_REG_PWM_CTL); data->pwm_ctl[0] = val & 0xf; data->pwm_ctl[1] = (val >> 4) & 0xf; data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK); /* pwm & temp auto point registers */ data->pwm_auto_pwm[0][1] = vt1211_read8(data, VT1211_REG_PWM_AUTO_PWM(0, 1)); data->pwm_auto_pwm[0][2] = vt1211_read8(data, VT1211_REG_PWM_AUTO_PWM(0, 2)); data->pwm_auto_pwm[1][1] = vt1211_read8(data, VT1211_REG_PWM_AUTO_PWM(1, 1)); data->pwm_auto_pwm[1][2] = vt1211_read8(data, VT1211_REG_PWM_AUTO_PWM(1, 2)); for (ix = 0; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) { data->pwm_auto_temp[ix] = vt1211_read8(data, VT1211_REG_PWM_AUTO_TEMP(ix)); } /* alarm registers */ data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8) | vt1211_read8(data, VT1211_REG_ALARM1); data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } /* --------------------------------------------------------------------- * Voltage sysfs interfaces * ix = [0-5] * --------------------------------------------------------------------- */ #define SHOW_IN_INPUT 0 #define SHOW_SET_IN_MIN 1 #define SHOW_SET_IN_MAX 2 #define SHOW_IN_ALARM 3 static ssize_t show_in(struct device *dev, struct device_attribute *attr, char *buf) { struct vt1211_data *data = vt1211_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SHOW_IN_INPUT: res = IN_FROM_REG(ix, data->in[ix]); break; case SHOW_SET_IN_MIN: res = IN_FROM_REG(ix, data->in_min[ix]); break; case SHOW_SET_IN_MAX: res = IN_FROM_REG(ix, data->in_max[ix]); break; case SHOW_IN_ALARM: res = (data->alarms >> bitalarmin[ix]) & 1; break; default: res = 0; dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_in(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct vt1211_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); switch (fn) { case SHOW_SET_IN_MIN: data->in_min[ix] = IN_TO_REG(ix, val); vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]); break; case SHOW_SET_IN_MAX: data->in_max[ix] = IN_TO_REG(ix, val); vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]); break; default: dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * Temperature sysfs interfaces * ix = [0-6] * --------------------------------------------------------------------- */ #define SHOW_TEMP_INPUT 0 #define SHOW_SET_TEMP_MAX 1 #define SHOW_SET_TEMP_MAX_HYST 2 #define SHOW_TEMP_ALARM 3 static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) { struct vt1211_data *data = vt1211_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SHOW_TEMP_INPUT: res = TEMP_FROM_REG(ix, data->temp[ix]); break; case SHOW_SET_TEMP_MAX: res = TEMP_FROM_REG(ix, data->temp_max[ix]); break; case SHOW_SET_TEMP_MAX_HYST: res = TEMP_FROM_REG(ix, data->temp_hyst[ix]); break; case SHOW_TEMP_ALARM: res = (data->alarms >> bitalarmtemp[ix]) & 1; break; default: res = 0; dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_temp(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct vt1211_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); switch (fn) { case SHOW_SET_TEMP_MAX: data->temp_max[ix] = TEMP_TO_REG(ix, val); vt1211_write8(data, regtempmax[ix], data->temp_max[ix]); break; case SHOW_SET_TEMP_MAX_HYST: data->temp_hyst[ix] = TEMP_TO_REG(ix, val); vt1211_write8(data, regtemphyst[ix], data->temp_hyst[ix]); break; default: dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * Fan sysfs interfaces * ix = [0-1] * --------------------------------------------------------------------- */ #define SHOW_FAN_INPUT 0 #define SHOW_SET_FAN_MIN 1 #define SHOW_SET_FAN_DIV 2 #define SHOW_FAN_ALARM 3 static ssize_t show_fan(struct device *dev, struct device_attribute *attr, char *buf) { struct vt1211_data *data = vt1211_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SHOW_FAN_INPUT: res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]); break; case SHOW_SET_FAN_MIN: res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]); break; case SHOW_SET_FAN_DIV: res = DIV_FROM_REG(data->fan_div[ix]); break; case SHOW_FAN_ALARM: res = (data->alarms >> bitalarmfan[ix]) & 1; break; default: res = 0; dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_fan(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct vt1211_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val = simple_strtol(buf, NULL, 10); int reg; mutex_lock(&data->update_lock); /* sync the data cache */ reg = vt1211_read8(data, VT1211_REG_FAN_DIV); data->fan_div[0] = (reg >> 4) & 3; data->fan_div[1] = (reg >> 6) & 3; data->fan_ctl = reg & 0xf; switch (fn) { case SHOW_SET_FAN_MIN: data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]); vt1211_write8(data, VT1211_REG_FAN_MIN(ix), data->fan_min[ix]); break; case SHOW_SET_FAN_DIV: switch (val) { case 1: data->fan_div[ix] = 0; break; case 2: data->fan_div[ix] = 1; break; case 4: data->fan_div[ix] = 2; break; case 8: data->fan_div[ix] = 3; break; default: count = -EINVAL; dev_warn(dev, "fan div value %ld not " "supported. Choose one of 1, 2, " "4, or 8.\n", val); goto EXIT; } vt1211_write8(data, VT1211_REG_FAN_DIV, ((data->fan_div[1] << 6) | (data->fan_div[0] << 4) | data->fan_ctl)); break; default: dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } EXIT: mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * PWM sysfs interfaces * ix = [0-1] * --------------------------------------------------------------------- */ #define SHOW_PWM 0 #define SHOW_SET_PWM_ENABLE 1 #define SHOW_SET_PWM_FREQ 2 #define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, char *buf) { struct vt1211_data *data = vt1211_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; int res; switch (fn) { case SHOW_PWM: res = data->pwm[ix]; break; case SHOW_SET_PWM_ENABLE: res = ((data->pwm_ctl[ix] >> 3) & 1) ? 2 : 0; break; case SHOW_SET_PWM_FREQ: res = 90000 >> (data->pwm_clk & 7); break; case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: res = (data->pwm_ctl[ix] & 7) + 1; break; default: res = 0; dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } return sprintf(buf, "%d\n", res); } static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct vt1211_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int fn = sensor_attr_2->nr; long val = simple_strtol(buf, NULL, 10); int tmp, reg; mutex_lock(&data->update_lock); switch (fn) { case SHOW_SET_PWM_ENABLE: /* sync the data cache */ reg = vt1211_read8(data, VT1211_REG_FAN_DIV); data->fan_div[0] = (reg >> 4) & 3; data->fan_div[1] = (reg >> 6) & 3; data->fan_ctl = reg & 0xf; reg = vt1211_read8(data, VT1211_REG_PWM_CTL); data->pwm_ctl[0] = reg & 0xf; data->pwm_ctl[1] = (reg >> 4) & 0xf; switch (val) { case 0: data->pwm_ctl[ix] &= 7; /* disable SmartGuardian if both PWM outputs are * disabled */ if ((data->pwm_ctl[ix ^ 1] & 1) == 0) { data->fan_ctl &= 0xe; } break; case 2: data->pwm_ctl[ix] |= 8; data->fan_ctl |= 1; break; default: count = -EINVAL; dev_warn(dev, "pwm mode %ld not supported. " "Choose one of 0 or 2.\n", val); goto EXIT; } vt1211_write8(data, VT1211_REG_PWM_CTL, ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0])); vt1211_write8(data, VT1211_REG_FAN_DIV, ((data->fan_div[1] << 6) | (data->fan_div[0] << 4) | data->fan_ctl)); break; case SHOW_SET_PWM_FREQ: val = 135000 / SENSORS_LIMIT(val, 135000 >> 7, 135000); /* calculate tmp = log2(val) */ tmp = 0; for (val >>= 1; val > 0; val >>= 1) { tmp++; } /* sync the data cache */ reg = vt1211_read8(data, VT1211_REG_PWM_CLK); data->pwm_clk = (reg & 0xf8) | tmp; vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk); break; case SHOW_SET_PWM_AUTO_CHANNELS_TEMP: if ((val < 1) || (val > 7)) { count = -EINVAL; dev_warn(dev, "temp channel %ld not supported. " "Choose a value between 1 and 7.\n", val); goto EXIT; } if (!ISTEMP(val - 1, data->uch_config)) { count = -EINVAL; dev_warn(dev, "temp channel %ld is not available.\n", val); goto EXIT; } /* sync the data cache */ reg = vt1211_read8(data, VT1211_REG_PWM_CTL); data->pwm_ctl[0] = reg & 0xf; data->pwm_ctl[1] = (reg >> 4) & 0xf; data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8) | (val - 1); vt1211_write8(data, VT1211_REG_PWM_CTL, ((data->pwm_ctl[1] << 4) | data->pwm_ctl[0])); break; default: dev_dbg(dev, "Unknown attr fetch (%d)\n", fn); } EXIT: mutex_unlock(&data->update_lock); return count; } /* --------------------------------------------------------------------- * PWM auto point definitions * ix = [0-1] * ap = [0-3] * --------------------------------------------------------------------- */ /* * pwm[ix+1]_auto_point[ap+1]_temp mapping table: * Note that there is only a single set of temp auto points that controls both * PWM controllers. We still create 2 sets of sysfs files to make it look * more consistent even though they map to the same registers. * * ix ap : description * ------------------- * 0 0 : pwm1/2 off temperature (pwm_auto_temp[0]) * 0 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) * 0 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) * 0 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) * 1 0 : pwm1/2 off temperature (pwm_auto_temp[0]) * 1 1 : pwm1/2 low speed temperature (pwm_auto_temp[1]) * 1 2 : pwm1/2 high speed temperature (pwm_auto_temp[2]) * 1 3 : pwm1/2 full speed temperature (pwm_auto_temp[3]) */ static ssize_t show_pwm_auto_point_temp(struct device *dev, struct device_attribute *attr, char *buf) { struct vt1211_data *data = vt1211_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int ap = sensor_attr_2->nr; return sprintf(buf, "%d\n", TEMP_FROM_REG(data->pwm_ctl[ix] & 7, data->pwm_auto_temp[ap])); } static ssize_t set_pwm_auto_point_temp(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct vt1211_data *data = dev_get_drvdata(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr); int ix = sensor_attr_2->index; int ap = sensor_attr_2->nr; long val = simple_strtol(buf, NULL, 10); int reg; mutex_lock(&data->update_lock); /* sync the data cache */ reg = vt1211_read8(data, VT1211_REG_PWM_CTL); data->pwm_ctl[0] = reg & 0xf; data->pwm_ctl[1] = (reg >> 4) & 0xf; data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7, val); vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap), data->pwm_auto_temp[ap]); mutex_unlock(&data->update_lock); return count; } /* * pwm[ix+1]_auto_point[ap+1]_pwm mapping table: * Note that the PWM auto points 0 & 3 are hard-wired in the VT1211 and can't * be changed. * * ix ap : description * ------------------- * 0 0 : pwm1 off (pwm_auto_pwm[0][0], hard-wired to 0) * 0 1 : pwm1 low speed duty cycle (pwm_auto_pwm[0][1]) * 0 2 : pwm1 high speed duty cycle (pwm_auto_pwm[0][2]) * 0 3 : pwm1 full speed (pwm_auto_pwm[0][3], hard-wired to 255) * 1 0 : pwm2 off (pwm_auto_pwm[1][0], hard-wired to 0) * 1 1 : pwm2 low speed duty cycle (pwm_auto_pwm[1][1]) * 1 2 : pwm2 high speed duty cycle (pwm_auto_pwm[1][2]) * 1 3 : pwm2 full speed (pwm_auto_pwm[1][3], hard-wired to 255) */ static ssize_t show_pwm_auto_point_pwm(struct device *dev, struct device_attribute *attr, char *buf) { struct vt1211_data *data = vt1211_update_device(dev); struct sensor_device_attribute_2 *sensor_attr_2 = to_sensor_dev_attr_2(attr);


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