static int rs5c_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct i2c_client *client = to_i2c_client(dev); struct rs5c372 *rs5c = i2c_get_clientdata(client); unsigned char buf; int status, addr; buf = rs5c->regs[RS5C_REG_CTRL1]; if (!rs5c->has_irq) return -EINVAL; status = rs5c_get_regs(rs5c); if (status < 0) return status; addr = RS5C_ADDR(RS5C_REG_CTRL1); if (enabled) buf |= RS5C_CTRL1_AALE; else buf &= ~RS5C_CTRL1_AALE; if (i2c_smbus_write_byte_data(client, addr, buf) < 0) { printk(KERN_WARNING "%s: can't update alarm\n", rs5c->rtc->name); status = -EIO; } else rs5c->regs[RS5C_REG_CTRL1] = buf; return status; }
static int rs5c_read_alarm(struct device *dev, struct rtc_wkalrm *t) { struct i2c_client *client = to_i2c_client(dev); struct rs5c372 *rs5c = i2c_get_clientdata(client); int status; status = rs5c_get_regs(rs5c); if (status < 0) return status; /* report alarm time */ t->time.tm_sec = 0; t->time.tm_min = bcd2bin(rs5c->regs[RS5C_REG_ALARM_A_MIN] & 0x7f); t->time.tm_hour = rs5c_reg2hr(rs5c, rs5c->regs[RS5C_REG_ALARM_A_HOURS]); t->time.tm_mday = -1; t->time.tm_mon = -1; t->time.tm_year = -1; t->time.tm_wday = -1; t->time.tm_yday = -1; t->time.tm_isdst = -1; /* ... and status */ t->enabled = !!(rs5c->regs[RS5C_REG_CTRL1] & RS5C_CTRL1_AALE); t->pending = !!(rs5c->regs[RS5C_REG_CTRL2] & RS5C_CTRL2_AAFG); return 0; }
static int rs5c372_get_datetime(struct i2c_client *client, struct rtc_time *tm) { struct rs5c372 *rs5c = i2c_get_clientdata(client); int status = rs5c_get_regs(rs5c); if (status < 0) return status; tm->tm_sec = bcd2bin(rs5c->regs[RS5C372_REG_SECS] & 0x7f); tm->tm_min = bcd2bin(rs5c->regs[RS5C372_REG_MINS] & 0x7f); tm->tm_hour = rs5c_reg2hr(rs5c, rs5c->regs[RS5C372_REG_HOURS]); tm->tm_wday = bcd2bin(rs5c->regs[RS5C372_REG_WDAY] & 0x07); tm->tm_mday = bcd2bin(rs5c->regs[RS5C372_REG_DAY] & 0x3f); /* tm->tm_mon is zero-based */ tm->tm_mon = bcd2bin(rs5c->regs[RS5C372_REG_MONTH] & 0x1f) - 1; /* year is 1900 + tm->tm_year */ tm->tm_year = bcd2bin(rs5c->regs[RS5C372_REG_YEAR]) + 100; dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " "mday=%d, mon=%d, year=%d, wday=%d\n", __func__, tm->tm_sec, tm->tm_min, tm->tm_hour, tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); /* rtc might need initialization */ return rtc_valid_tm(tm); }
static int rs5c_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { struct i2c_client *client = to_i2c_client(dev); struct rs5c372 *rs5c = i2c_get_clientdata(client); unsigned char buf; int status, addr; buf = rs5c->regs[RS5C_REG_CTRL1]; switch (cmd) { case RTC_UIE_OFF: case RTC_UIE_ON: /* some 327a modes use a different IRQ pin for 1Hz irqs */ if (rs5c->type == rtc_rs5c372a && (buf & RS5C372A_CTRL1_SL1)) return -ENOIOCTLCMD; case RTC_AIE_OFF: case RTC_AIE_ON: /* these irq management calls only make sense for chips * which are wired up to an IRQ. */ if (!rs5c->has_irq) return -ENOIOCTLCMD; break; default: return -ENOIOCTLCMD; } status = rs5c_get_regs(rs5c); if (status < 0) return status; addr = RS5C_ADDR(RS5C_REG_CTRL1); switch (cmd) { case RTC_AIE_OFF: /* alarm off */ buf &= ~RS5C_CTRL1_AALE; break; case RTC_AIE_ON: /* alarm on */ buf |= RS5C_CTRL1_AALE; break; case RTC_UIE_OFF: /* update off */ buf &= ~RS5C_CTRL1_CT_MASK; break; case RTC_UIE_ON: /* update on */ buf &= ~RS5C_CTRL1_CT_MASK; buf |= RS5C_CTRL1_CT4; break; } if (i2c_smbus_write_byte_data(client, addr, buf) < 0) { printk(KERN_WARNING "%s: can't update alarm\n", rs5c->rtc->name); status = -EIO; } else rs5c->regs[RS5C_REG_CTRL1] = buf; return status; }
static int rs5c_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { struct i2c_client *client = to_i2c_client(dev); struct rs5c372 *rs5c = i2c_get_clientdata(client); unsigned char buf; int status, addr; buf = rs5c->regs[RS5C_REG_CTRL1]; switch (cmd) { case RTC_UIE_OFF: case RTC_UIE_ON: if (rs5c->type == rtc_rs5c372a && (buf & RS5C372A_CTRL1_SL1)) return -ENOIOCTLCMD; case RTC_AIE_OFF: case RTC_AIE_ON: if (!rs5c->has_irq) return -ENOIOCTLCMD; break; default: return -ENOIOCTLCMD; } status = rs5c_get_regs(rs5c); if (status < 0) return status; addr = RS5C_ADDR(RS5C_REG_CTRL1); switch (cmd) { case RTC_AIE_OFF: buf &= ~RS5C_CTRL1_AALE; break; case RTC_AIE_ON: buf |= RS5C_CTRL1_AALE; break; case RTC_UIE_OFF: buf &= ~RS5C_CTRL1_CT_MASK; break; case RTC_UIE_ON: buf &= ~RS5C_CTRL1_CT_MASK; buf |= RS5C_CTRL1_CT4; break; } if (i2c_smbus_write_byte_data(client, addr, buf) < 0) { printk(KERN_WARNING "%s: can't update alarm\n", rs5c->rtc->name); status = -EIO; } else rs5c->regs[RS5C_REG_CTRL1] = buf; return status; }
static int rs5c_set_alarm(struct device *dev, struct rtc_wkalrm *t) { struct i2c_client *client = to_i2c_client(dev); struct rs5c372 *rs5c = i2c_get_clientdata(client); int status, addr, i; unsigned char buf[3]; /* only handle up to 24 hours in the future, like RTC_ALM_SET */ if (t->time.tm_mday != -1 || t->time.tm_mon != -1 || t->time.tm_year != -1) return -EINVAL; /* REVISIT: round up tm_sec */ /* if needed, disable irq (clears pending status) */ status = rs5c_get_regs(rs5c); if (status < 0) return status; if (rs5c->regs[RS5C_REG_CTRL1] & RS5C_CTRL1_AALE) { addr = RS5C_ADDR(RS5C_REG_CTRL1); buf[0] = rs5c->regs[RS5C_REG_CTRL1] & ~RS5C_CTRL1_AALE; if (i2c_smbus_write_byte_data(client, addr, buf[0]) < 0) { pr_debug("%s: can't disable alarm\n", rs5c->rtc->name); return -EIO; } rs5c->regs[RS5C_REG_CTRL1] = buf[0]; } /* set alarm */ buf[0] = bin2bcd(t->time.tm_min); buf[1] = rs5c_hr2reg(rs5c, t->time.tm_hour); buf[2] = 0x7f; /* any/all days */ for (i = 0; i < sizeof(buf); i++) { addr = RS5C_ADDR(RS5C_REG_ALARM_A_MIN + i); if (i2c_smbus_write_byte_data(client, addr, buf[i]) < 0) { pr_debug("%s: can't set alarm time\n", rs5c->rtc->name); return -EIO; } } /* ... and maybe enable its irq */ if (t->enabled) { addr = RS5C_ADDR(RS5C_REG_CTRL1); buf[0] = rs5c->regs[RS5C_REG_CTRL1] | RS5C_CTRL1_AALE; if (i2c_smbus_write_byte_data(client, addr, buf[0]) < 0) printk(KERN_WARNING "%s: can't enable alarm\n", rs5c->rtc->name); rs5c->regs[RS5C_REG_CTRL1] = buf[0]; } return 0; }
static int rs5c_set_alarm(struct device *dev, struct rtc_wkalrm *t) { struct i2c_client *client = to_i2c_client(dev); struct rs5c372 *rs5c = i2c_get_clientdata(client); int status, addr, i; unsigned char buf[3]; if (t->time.tm_mday != -1 || t->time.tm_mon != -1 || t->time.tm_year != -1) return -EINVAL; status = rs5c_get_regs(rs5c); if (status < 0) return status; if (rs5c->regs[RS5C_REG_CTRL1] & RS5C_CTRL1_AALE) { addr = RS5C_ADDR(RS5C_REG_CTRL1); buf[0] = rs5c->regs[RS5C_REG_CTRL1] & ~RS5C_CTRL1_AALE; if (i2c_smbus_write_byte_data(client, addr, buf[0]) < 0) { pr_debug("%s: can't disable alarm\n", rs5c->rtc->name); return -EIO; } rs5c->regs[RS5C_REG_CTRL1] = buf[0]; } buf[0] = bin2bcd(t->time.tm_min); buf[1] = rs5c_hr2reg(rs5c, t->time.tm_hour); buf[2] = 0x7f; for (i = 0; i < sizeof(buf); i++) { addr = RS5C_ADDR(RS5C_REG_ALARM_A_MIN + i); if (i2c_smbus_write_byte_data(client, addr, buf[i]) < 0) { pr_debug("%s: can't set alarm time\n", rs5c->rtc->name); return -EIO; } } if (t->enabled) { addr = RS5C_ADDR(RS5C_REG_CTRL1); buf[0] = rs5c->regs[RS5C_REG_CTRL1] | RS5C_CTRL1_AALE; if (i2c_smbus_write_byte_data(client, addr, buf[0]) < 0) printk(KERN_WARNING "%s: can't enable alarm\n", rs5c->rtc->name); rs5c->regs[RS5C_REG_CTRL1] = buf[0]; } return 0; }
static int rs5c372_probe(struct i2c_client *client, const struct i2c_device_id *id) { int err = 0; int smbus_mode = 0; struct rs5c372 *rs5c372; struct rtc_time tm; dev_dbg(&client->dev, "%s\n", __func__); if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_I2C_BLOCK)) { /* * If we don't have any master mode adapter, try breaking * it down in to the barest of capabilities. */ if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_I2C_BLOCK)) smbus_mode = 1; else { /* Still no good, give up */ err = -ENODEV; goto exit; } } if (!(rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL))) { err = -ENOMEM; goto exit; } rs5c372->client = client; i2c_set_clientdata(client, rs5c372); rs5c372->type = id->driver_data; /* we read registers 0x0f then 0x00-0x0f; skip the first one */ rs5c372->regs = &rs5c372->buf[1]; rs5c372->smbus = smbus_mode; err = rs5c_get_regs(rs5c372); if (err < 0) goto exit_kfree; /* clock may be set for am/pm or 24 hr time */ switch (rs5c372->type) { case rtc_rs5c372a: case rtc_rs5c372b: /* alarm uses ALARM_A; and nINTRA on 372a, nINTR on 372b. * so does periodic irq, except some 327a modes. */ if (rs5c372->regs[RS5C_REG_CTRL2] & RS5C372_CTRL2_24) rs5c372->time24 = 1; break; case rtc_r2025sd: case rtc_rv5c386: case rtc_rv5c387a: if (rs5c372->regs[RS5C_REG_CTRL1] & RV5C387_CTRL1_24) rs5c372->time24 = 1; /* alarm uses ALARM_W; and nINTRB for alarm and periodic * irq, on both 386 and 387 */ break; default: dev_err(&client->dev, "unknown RTC type\n"); goto exit_kfree; } /* if the oscillator lost power and no other software (like * the bootloader) set it up, do it here. * * The R2025S/D does this a little differently than the other * parts, so we special case that.. */ err = rs5c_oscillator_setup(rs5c372); if (unlikely(err < 0)) { dev_err(&client->dev, "setup error\n"); goto exit_kfree; } if (rs5c372_get_datetime(client, &tm) < 0) dev_warn(&client->dev, "clock needs to be set\n"); dev_info(&client->dev, "%s found, %s, driver version " DRV_VERSION "\n", ({ char *s; switch (rs5c372->type) { case rtc_r2025sd: s = "r2025sd"; break; case rtc_rs5c372a: s = "rs5c372a"; break; case rtc_rs5c372b: s = "rs5c372b"; break; case rtc_rv5c386: s = "rv5c386"; break; case rtc_rv5c387a: s = "rv5c387a"; break; default: s = "chip"; break; }; s;}),
static int rs5c372_probe(struct i2c_adapter *adapter, int address, int kind) { int err = 0; struct i2c_client *client; struct rs5c372 *rs5c372; struct rtc_time tm; dev_dbg(adapter->class_dev.dev, "%s\n", __FUNCTION__); if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { err = -ENODEV; goto exit; } if (!(rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL))) { err = -ENOMEM; goto exit; } /* we read registers 0x0f then 0x00-0x0f; skip the first one */ rs5c372->regs=&rs5c372->buf[1]; /* On conversion to a "new style" i2c driver, we'll be handed * the i2c_client (we won't create it) */ client = &rs5c372->dev; rs5c372->client = client; /* I2C client */ client->addr = address; client->driver = &rs5c372_driver; client->adapter = adapter; strlcpy(client->name, rs5c372_driver.driver.name, I2C_NAME_SIZE); i2c_set_clientdata(client, rs5c372); /* Inform the i2c layer */ if ((err = i2c_attach_client(client))) goto exit_kfree; err = rs5c_get_regs(rs5c372); if (err < 0) goto exit_detach; /* For "new style" drivers, irq is in i2c_client and chip type * info comes from i2c_client.dev.platform_data. Meanwhile: * * STICK BOARD-SPECIFIC SETUP CODE RIGHT HERE */ if (rs5c372->type == rtc_undef) { rs5c372->type = rtc_rs5c372b; dev_warn(&client->dev, "assuming rs5c372b\n"); } /* clock may be set for am/pm or 24 hr time */ switch (rs5c372->type) { case rtc_rs5c372a: case rtc_rs5c372b: /* alarm uses ALARM_A; and nINTRA on 372a, nINTR on 372b. * so does periodic irq, except some 327a modes. */ if (rs5c372->regs[RS5C_REG_CTRL2] & RS5C372_CTRL2_24) rs5c372->time24 = 1; break; case rtc_rv5c386: case rtc_rv5c387a: if (rs5c372->regs[RS5C_REG_CTRL1] & RV5C387_CTRL1_24) rs5c372->time24 = 1; /* alarm uses ALARM_W; and nINTRB for alarm and periodic * irq, on both 386 and 387 */ break; default: dev_err(&client->dev, "unknown RTC type\n"); goto exit_detach; } /* if the oscillator lost power and no other software (like * the bootloader) set it up, do it here. */ if (rs5c372->regs[RS5C_REG_CTRL2] & RS5C_CTRL2_XSTP) { unsigned char buf[3]; rs5c372->regs[RS5C_REG_CTRL2] &= ~RS5C_CTRL2_XSTP; buf[0] = RS5C_ADDR(RS5C_REG_CTRL1); buf[1] = rs5c372->regs[RS5C_REG_CTRL1]; buf[2] = rs5c372->regs[RS5C_REG_CTRL2]; /* use 24hr mode */ switch (rs5c372->type) { case rtc_rs5c372a: case rtc_rs5c372b: buf[2] |= RS5C372_CTRL2_24; rs5c372->time24 = 1; break; case rtc_rv5c386: case rtc_rv5c387a: buf[1] |= RV5C387_CTRL1_24; rs5c372->time24 = 1; break; default: /* impossible */ break; } if ((i2c_master_send(client, buf, 3)) != 3) { dev_err(&client->dev, "setup error\n"); goto exit_detach; } rs5c372->regs[RS5C_REG_CTRL1] = buf[1]; rs5c372->regs[RS5C_REG_CTRL2] = buf[2]; } if (rs5c372_get_datetime(client, &tm) < 0) dev_warn(&client->dev, "clock needs to be set\n"); dev_info(&client->dev, "%s found, %s, driver version " DRV_VERSION "\n", ({ char *s; switch (rs5c372->type) { case rtc_rs5c372a: s = "rs5c372a"; break; case rtc_rs5c372b: s = "rs5c372b"; break; case rtc_rv5c386: s = "rv5c386"; break; case rtc_rv5c387a: s = "rv5c387a"; break; default: s = "chip"; break; }; s;}),
static int rs5c372_probe(struct i2c_client *client, const struct i2c_device_id *id) { int err = 0; int smbus_mode = 0; struct rs5c372 *rs5c372; struct rtc_time tm; dev_dbg(&client->dev, "%s\n", __func__); if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_I2C_BLOCK)) { if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_I2C_BLOCK)) smbus_mode = 1; else { err = -ENODEV; goto exit; } } if (!(rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL))) { err = -ENOMEM; goto exit; } rs5c372->client = client; i2c_set_clientdata(client, rs5c372); rs5c372->type = id->driver_data; rs5c372->regs = &rs5c372->buf[1]; rs5c372->smbus = smbus_mode; err = rs5c_get_regs(rs5c372); if (err < 0) goto exit_kfree; switch (rs5c372->type) { case rtc_rs5c372a: case rtc_rs5c372b: if (rs5c372->regs[RS5C_REG_CTRL2] & RS5C372_CTRL2_24) rs5c372->time24 = 1; break; case rtc_r2025sd: case rtc_rv5c386: case rtc_rv5c387a: if (rs5c372->regs[RS5C_REG_CTRL1] & RV5C387_CTRL1_24) rs5c372->time24 = 1; break; default: dev_err(&client->dev, "unknown RTC type\n"); goto exit_kfree; } err = rs5c_oscillator_setup(rs5c372); if (unlikely(err < 0)) { dev_err(&client->dev, "setup error\n"); goto exit_kfree; } if (rs5c372_get_datetime(client, &tm) < 0) dev_warn(&client->dev, "clock needs to be set\n"); dev_info(&client->dev, "%s found, %s, driver version " DRV_VERSION "\n", ({ char *s; switch (rs5c372->type) { case rtc_r2025sd: s = "r2025sd"; break; case rtc_rs5c372a: s = "rs5c372a"; break; case rtc_rs5c372b: s = "rs5c372b"; break; case rtc_rv5c386: s = "rv5c386"; break; case rtc_rv5c387a: s = "rv5c387a"; break; default: s = "chip"; break; }; s;}),
static int rs5c372_probe(struct i2c_client *client, const struct i2c_device_id *id) { int err = 0; struct rs5c372 *rs5c372; struct rtc_time tm; dev_dbg(&client->dev, "%s\n", __func__); if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { err = -ENODEV; goto exit; } if (!(rs5c372 = kzalloc(sizeof(struct rs5c372), GFP_KERNEL))) { err = -ENOMEM; goto exit; } rs5c372->client = client; i2c_set_clientdata(client, rs5c372); rs5c372->type = id->driver_data; /* we read registers 0x0f then 0x00-0x0f; skip the first one */ rs5c372->regs = &rs5c372->buf[1]; err = rs5c_get_regs(rs5c372); if (err < 0) goto exit_kfree; /* clock may be set for am/pm or 24 hr time */ switch (rs5c372->type) { case rtc_rs5c372a: case rtc_rs5c372b: /* alarm uses ALARM_A; and nINTRA on 372a, nINTR on 372b. * so does periodic irq, except some 327a modes. */ if (rs5c372->regs[RS5C_REG_CTRL2] & RS5C372_CTRL2_24) rs5c372->time24 = 1; break; case rtc_rv5c386: case rtc_rv5c387a: if (rs5c372->regs[RS5C_REG_CTRL1] & RV5C387_CTRL1_24) rs5c372->time24 = 1; /* alarm uses ALARM_W; and nINTRB for alarm and periodic * irq, on both 386 and 387 */ break; default: dev_err(&client->dev, "unknown RTC type\n"); goto exit_kfree; } /* if the oscillator lost power and no other software (like * the bootloader) set it up, do it here. */ if (rs5c372->regs[RS5C_REG_CTRL2] & RS5C_CTRL2_XSTP) { unsigned char buf[3]; rs5c372->regs[RS5C_REG_CTRL2] &= ~RS5C_CTRL2_XSTP; buf[0] = RS5C_ADDR(RS5C_REG_CTRL1); buf[1] = rs5c372->regs[RS5C_REG_CTRL1]; buf[2] = rs5c372->regs[RS5C_REG_CTRL2]; /* use 24hr mode */ switch (rs5c372->type) { case rtc_rs5c372a: case rtc_rs5c372b: buf[2] |= RS5C372_CTRL2_24; rs5c372->time24 = 1; break; case rtc_rv5c386: case rtc_rv5c387a: buf[1] |= RV5C387_CTRL1_24; rs5c372->time24 = 1; break; default: /* impossible */ break; } if ((i2c_master_send(client, buf, 3)) != 3) { dev_err(&client->dev, "setup error\n"); goto exit_kfree; } rs5c372->regs[RS5C_REG_CTRL1] = buf[1]; rs5c372->regs[RS5C_REG_CTRL2] = buf[2]; } if (rs5c372_get_datetime(client, &tm) < 0) dev_warn(&client->dev, "clock needs to be set\n"); dev_info(&client->dev, "%s found, %s, driver version " DRV_VERSION "\n", ({ char *s; switch (rs5c372->type) { case rtc_rs5c372a: s = "rs5c372a"; break; case rtc_rs5c372b: s = "rs5c372b"; break; case rtc_rv5c386: s = "rv5c386"; break; case rtc_rv5c387a: s = "rv5c387a"; break; default: s = "chip"; break; }; s;}),