diff options
Diffstat (limited to 'drivers/rtc/rtc-ds1685.c')
| -rw-r--r-- | drivers/rtc/rtc-ds1685.c | 194 |
1 files changed, 26 insertions, 168 deletions
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c index 6f39f683a98c..2710f2594c42 100644 --- a/drivers/rtc/rtc-ds1685.c +++ b/drivers/rtc/rtc-ds1685.c @@ -770,33 +770,6 @@ static const char *ds1685_rtc_sqw_freq[16] = { "512Hz", "256Hz", "128Hz", "64Hz", "32Hz", "16Hz", "8Hz", "4Hz", "2Hz" }; -#ifdef CONFIG_RTC_DS1685_PROC_REGS -/** - * ds1685_rtc_print_regs - helper function to print register values. - * @hex: hex byte to convert into binary bits. - * @dest: destination char array. - * - * This is basically a hex->binary function, just with extra spacing between - * the digits. It only works on 1-byte values (8 bits). - */ -static char* -ds1685_rtc_print_regs(u8 hex, char *dest) -{ - u32 i, j; - char *tmp = dest; - - for (i = 0; i < NUM_BITS; i++) { - *tmp++ = ((hex & 0x80) != 0 ? '1' : '0'); - for (j = 0; j < NUM_SPACES; j++) - *tmp++ = ' '; - hex <<= 1; - } - *tmp++ = '\0'; - - return dest; -} -#endif - /** * ds1685_rtc_proc - procfs access function. * @dev: pointer to device structure. @@ -805,13 +778,9 @@ ds1685_rtc_print_regs(u8 hex, char *dest) static int ds1685_rtc_proc(struct device *dev, struct seq_file *seq) { - struct platform_device *pdev = to_platform_device(dev); - struct ds1685_priv *rtc = platform_get_drvdata(pdev); + struct ds1685_priv *rtc = dev_get_drvdata(dev); u8 ctrla, ctrlb, ctrlc, ctrld, ctrl4a, ctrl4b, ssn[8]; char *model; -#ifdef CONFIG_RTC_DS1685_PROC_REGS - char bits[NUM_REGS][(NUM_BITS * NUM_SPACES) + NUM_BITS + 1]; -#endif /* Read all the relevant data from the control registers. */ ds1685_rtc_switch_to_bank1(rtc); @@ -859,28 +828,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq) "Periodic IRQ\t: %s\n" "Periodic Rate\t: %s\n" "SQW Freq\t: %s\n" -#ifdef CONFIG_RTC_DS1685_PROC_REGS - "Serial #\t: %8phC\n" - "Register Status\t:\n" - " Ctrl A\t: UIP DV2 DV1 DV0 RS3 RS2 RS1 RS0\n" - "\t\t: %s\n" - " Ctrl B\t: SET PIE AIE UIE SQWE DM 2412 DSE\n" - "\t\t: %s\n" - " Ctrl C\t: IRQF PF AF UF --- --- --- ---\n" - "\t\t: %s\n" - " Ctrl D\t: VRT --- --- --- --- --- --- ---\n" - "\t\t: %s\n" -#if !defined(CONFIG_RTC_DRV_DS1685) && !defined(CONFIG_RTC_DRV_DS1689) - " Ctrl 4A\t: VRT2 INCR BME --- PAB RF WF KF\n" -#else - " Ctrl 4A\t: VRT2 INCR --- --- PAB RF WF KF\n" -#endif - "\t\t: %s\n" - " Ctrl 4B\t: ABE E32k CS RCE PRS RIE WIE KSE\n" - "\t\t: %s\n", -#else "Serial #\t: %8phC\n", -#endif model, ((ctrla & RTC_CTRL_A_DV1) ? "enabled" : "disabled"), ((ctrlb & RTC_CTRL_B_2412) ? "24-hour" : "12-hour"), @@ -894,17 +842,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq) ds1685_rtc_pirq_rate[(ctrla & RTC_CTRL_A_RS_MASK)] : "none"), (!((ctrl4b & RTC_CTRL_4B_E32K)) ? ds1685_rtc_sqw_freq[(ctrla & RTC_CTRL_A_RS_MASK)] : "32768Hz"), -#ifdef CONFIG_RTC_DS1685_PROC_REGS - ssn, - ds1685_rtc_print_regs(ctrla, bits[0]), - ds1685_rtc_print_regs(ctrlb, bits[1]), - ds1685_rtc_print_regs(ctrlc, bits[2]), - ds1685_rtc_print_regs(ctrld, bits[3]), - ds1685_rtc_print_regs(ctrl4a, bits[4]), - ds1685_rtc_print_regs(ctrl4b, bits[5])); -#else ssn); -#endif return 0; } #else @@ -927,30 +865,13 @@ ds1685_rtc_ops = { }; /* ----------------------------------------------------------------------- */ - -/* ----------------------------------------------------------------------- */ -/* SysFS interface */ - -#ifdef CONFIG_SYSFS -/** - * ds1685_rtc_sysfs_nvram_read - reads rtc nvram via sysfs. - * @file: pointer to file structure. - * @kobj: pointer to kobject structure. - * @bin_attr: pointer to bin_attribute structure. - * @buf: pointer to char array to hold the output. - * @pos: current file position pointer. - * @size: size of the data to read. - */ -static ssize_t -ds1685_rtc_sysfs_nvram_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buf, - loff_t pos, size_t size) +static int ds1685_nvram_read(void *priv, unsigned int pos, void *val, + size_t size) { - struct platform_device *pdev = - to_platform_device(container_of(kobj, struct device, kobj)); - struct ds1685_priv *rtc = platform_get_drvdata(pdev); + struct ds1685_priv *rtc = priv; ssize_t count; unsigned long flags = 0; + u8 *buf = val; spin_lock_irqsave(&rtc->lock, flags); ds1685_rtc_switch_to_bank0(rtc); @@ -1004,33 +925,16 @@ ds1685_rtc_sysfs_nvram_read(struct file *filp, struct kobject *kobj, #endif /* !CONFIG_RTC_DRV_DS1689 */ spin_unlock_irqrestore(&rtc->lock, flags); - /* - * XXX: Bug? this appears to cause the function to get executed - * several times in succession. But it's the only way to actually get - * data written out to a file. - */ - return count; + return 0; } -/** - * ds1685_rtc_sysfs_nvram_write - writes rtc nvram via sysfs. - * @file: pointer to file structure. - * @kobj: pointer to kobject structure. - * @bin_attr: pointer to bin_attribute structure. - * @buf: pointer to char array to hold the input. - * @pos: current file position pointer. - * @size: size of the data to write. - */ -static ssize_t -ds1685_rtc_sysfs_nvram_write(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, char *buf, - loff_t pos, size_t size) +static int ds1685_nvram_write(void *priv, unsigned int pos, void *val, + size_t size) { - struct platform_device *pdev = - to_platform_device(container_of(kobj, struct device, kobj)); - struct ds1685_priv *rtc = platform_get_drvdata(pdev); + struct ds1685_priv *rtc = priv; ssize_t count; unsigned long flags = 0; + u8 *buf = val; spin_lock_irqsave(&rtc->lock, flags); ds1685_rtc_switch_to_bank0(rtc); @@ -1084,26 +988,11 @@ ds1685_rtc_sysfs_nvram_write(struct file *filp, struct kobject *kobj, #endif /* !CONFIG_RTC_DRV_DS1689 */ spin_unlock_irqrestore(&rtc->lock, flags); - return count; + return 0; } -/** - * struct ds1685_rtc_sysfs_nvram_attr - sysfs attributes for rtc nvram. - * @attr: nvram attributes. - * @read: nvram read function. - * @write: nvram write function. - * @size: nvram total size (bank0 + extended). - */ -static struct bin_attribute -ds1685_rtc_sysfs_nvram_attr = { - .attr = { - .name = "nvram", - .mode = S_IRUGO | S_IWUSR, - }, - .read = ds1685_rtc_sysfs_nvram_read, - .write = ds1685_rtc_sysfs_nvram_write, - .size = NVRAM_TOTAL_SZ -}; +/* ----------------------------------------------------------------------- */ +/* SysFS interface */ /** * ds1685_rtc_sysfs_battery_show - sysfs file for main battery status. @@ -1188,43 +1077,6 @@ ds1685_rtc_sysfs_misc_grp = { .attrs = ds1685_rtc_sysfs_misc_attrs, }; -/** - * ds1685_rtc_sysfs_register - register sysfs files. - * @dev: pointer to device structure. - */ -static int -ds1685_rtc_sysfs_register(struct device *dev) -{ - int ret = 0; - - sysfs_bin_attr_init(&ds1685_rtc_sysfs_nvram_attr); - ret = sysfs_create_bin_file(&dev->kobj, &ds1685_rtc_sysfs_nvram_attr); - if (ret) - return ret; - - ret = sysfs_create_group(&dev->kobj, &ds1685_rtc_sysfs_misc_grp); - if (ret) - return ret; - - return 0; -} - -/** - * ds1685_rtc_sysfs_unregister - unregister sysfs files. - * @dev: pointer to device structure. - */ -static int -ds1685_rtc_sysfs_unregister(struct device *dev) -{ - sysfs_remove_bin_file(&dev->kobj, &ds1685_rtc_sysfs_nvram_attr); - sysfs_remove_group(&dev->kobj, &ds1685_rtc_sysfs_misc_grp); - - return 0; -} -#endif /* CONFIG_SYSFS */ - - - /* ----------------------------------------------------------------------- */ /* Driver Probe/Removal */ @@ -1242,6 +1094,12 @@ ds1685_rtc_probe(struct platform_device *pdev) u8 ctrla, ctrlb, hours; unsigned char am_pm; int ret = 0; + struct nvmem_config nvmem_cfg = { + .name = "ds1685_nvram", + .size = NVRAM_TOTAL_SZ, + .reg_read = ds1685_nvram_read, + .reg_write = ds1685_nvram_write, + }; /* Get the platform data. */ pdata = (struct ds1685_rtc_platform_data *) pdev->dev.platform_data; @@ -1499,11 +1357,15 @@ ds1685_rtc_probe(struct platform_device *pdev) /* Setup complete. */ ds1685_rtc_switch_to_bank0(rtc); -#ifdef CONFIG_SYSFS - ret = ds1685_rtc_sysfs_register(&pdev->dev); + ret = rtc_add_group(rtc_dev, &ds1685_rtc_sysfs_misc_grp); + if (ret) + return ret; + + rtc_dev->nvram_old_abi = true; + nvmem_cfg.priv = rtc; + ret = rtc_nvmem_register(rtc_dev, &nvmem_cfg); if (ret) return ret; -#endif return rtc_register_device(rtc_dev); } @@ -1517,10 +1379,6 @@ ds1685_rtc_remove(struct platform_device *pdev) { struct ds1685_priv *rtc = platform_get_drvdata(pdev); -#ifdef CONFIG_SYSFS - ds1685_rtc_sysfs_unregister(&pdev->dev); -#endif - /* Read Ctrl B and clear PIE/AIE/UIE. */ rtc->write(rtc, RTC_CTRL_B, (rtc->read(rtc, RTC_CTRL_B) & |