#include <asm/irq.h>
#include "rtc-s3c.h"
-enum s3c_cpu_type {
- TYPE_S3C2410,
- TYPE_S3C2416,
- TYPE_S3C2443,
- TYPE_S3C64XX,
-};
-
-struct s3c_rtc_drv_data {
- int cpu_type;
-};
-
struct s3c_rtc {
struct device *dev;
struct rtc_device *rtc;
struct clk *rtc_clk;
bool enabled;
- enum s3c_cpu_type cpu_type;
+ struct s3c_rtc_data *data;
int irq_alarm;
int irq_tick;
bool wake_en;
};
+struct s3c_rtc_data {
+ int max_user_freq;
+
+ void (*irq_handler) (struct s3c_rtc *info, int mask);
+ void (*set_freq) (struct s3c_rtc *info, int freq);
+ void (*enable_tick) (struct s3c_rtc *info, struct seq_file *seq);
+ void (*select_tick_clk) (struct s3c_rtc *info);
+ void (*save_tick_cnt) (struct s3c_rtc *info);
+ void (*restore_tick_cnt) (struct s3c_rtc *info);
+ void (*enable) (struct s3c_rtc *info);
+ void (*disable) (struct s3c_rtc *info);
+};
+
static void s3c_rtc_alarm_clk_enable(struct s3c_rtc *info, bool enable)
{
unsigned long irq_flags;
}
/* IRQ Handlers */
-static irqreturn_t s3c_rtc_alarmirq(int irq, void *id)
+static irqreturn_t s3c_rtc_tickirq(int irq, void *id)
{
struct s3c_rtc *info = (struct s3c_rtc *)id;
- clk_enable(info->rtc_clk);
- rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
-
- if (info->cpu_type == TYPE_S3C64XX)
- writeb(S3C2410_INTP_ALM, info->base + S3C2410_INTP);
-
- clk_disable(info->rtc_clk);
-
- s3c_rtc_alarm_clk_enable(info, false);
+ if (info->data->irq_handler)
+ info->data->irq_handler(info, S3C2410_INTP_TIC);
return IRQ_HANDLED;
}
-static irqreturn_t s3c_rtc_tickirq(int irq, void *id)
+static irqreturn_t s3c_rtc_alarmirq(int irq, void *id)
{
struct s3c_rtc *info = (struct s3c_rtc *)id;
- clk_enable(info->rtc_clk);
- rtc_update_irq(info->rtc, 1, RTC_PF | RTC_IRQF);
-
- if (info->cpu_type == TYPE_S3C64XX)
- writeb(S3C2410_INTP_TIC, info->base + S3C2410_INTP);
-
- clk_disable(info->rtc_clk);
+ if (info->data->irq_handler)
+ info->data->irq_handler(info, S3C2410_INTP_ALM);
return IRQ_HANDLED;
}
return 0;
}
+/* Set RTC frequency */
static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq)
{
- unsigned int tmp = 0;
- int val;
-
if (!is_power_of_2(freq))
return -EINVAL;
clk_enable(info->rtc_clk);
spin_lock_irq(&info->pie_lock);
- if (info->cpu_type != TYPE_S3C64XX) {
- tmp = readb(info->base + S3C2410_TICNT);
- tmp &= S3C2410_TICNT_ENABLE;
- }
-
- val = (info->rtc->max_user_freq / freq) - 1;
-
- if (info->cpu_type == TYPE_S3C2416 || info->cpu_type == TYPE_S3C2443) {
- tmp |= S3C2443_TICNT_PART(val);
- writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1);
+ if (info->data->set_freq)
+ info->data->set_freq(info, freq);
- if (info->cpu_type == TYPE_S3C2416)
- writel(S3C2416_TICNT2_PART(val),
- info->base + S3C2416_TICNT2);
- } else {
- tmp |= val;
- }
-
- writel(tmp, info->base + S3C2410_TICNT);
spin_unlock_irq(&info->pie_lock);
clk_disable(info->rtc_clk);
}
/* Time read/write */
-
static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
{
struct s3c_rtc *info = dev_get_drvdata(dev);
static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- unsigned int ticnt;
clk_enable(info->rtc_clk);
- if (info->cpu_type == TYPE_S3C64XX) {
- ticnt = readw(info->base + S3C2410_RTCCON);
- ticnt &= S3C64XX_RTCCON_TICEN;
- } else {
- ticnt = readb(info->base + S3C2410_TICNT);
- ticnt &= S3C2410_TICNT_ENABLE;
- }
- seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no");
+ if (info->data->enable_tick)
+ info->data->enable_tick(info, seq);
+
clk_disable(info->rtc_clk);
+
return 0;
}
.alarm_irq_enable = s3c_rtc_setaie,
};
-static void s3c_rtc_enable(struct s3c_rtc *info, int en)
+static void s3c24xx_rtc_enable(struct s3c_rtc *info)
{
unsigned int con, tmp;
clk_enable(info->rtc_clk);
con = readw(info->base + S3C2410_RTCCON);
- if (!en) {
- if (info->cpu_type == TYPE_S3C64XX)
- con &= ~S3C64XX_RTCCON_TICEN;
- con &= ~S3C2410_RTCCON_RTCEN;
- writew(con, info->base + S3C2410_RTCCON);
-
- if (info->cpu_type != TYPE_S3C64XX) {
- con = readb(info->base + S3C2410_TICNT);
- con &= ~S3C2410_TICNT_ENABLE;
- writeb(con, info->base + S3C2410_TICNT);
- }
- } else {
- /* re-enable the device, and check it is ok */
- if ((con & S3C2410_RTCCON_RTCEN) == 0) {
- dev_info(info->dev, "rtc disabled, re-enabling\n");
+ /* re-enable the device, and check it is ok */
+ if ((con & S3C2410_RTCCON_RTCEN) == 0) {
+ dev_info(info->dev, "rtc disabled, re-enabling\n");
- tmp = readw(info->base + S3C2410_RTCCON);
- writew(tmp | S3C2410_RTCCON_RTCEN,
- info->base + S3C2410_RTCCON);
- }
+ tmp = readw(info->base + S3C2410_RTCCON);
+ writew(tmp | S3C2410_RTCCON_RTCEN,
+ info->base + S3C2410_RTCCON);
+ }
- if (con & S3C2410_RTCCON_CNTSEL) {
- dev_info(info->dev, "removing RTCCON_CNTSEL\n");
+ if (con & S3C2410_RTCCON_CNTSEL) {
+ dev_info(info->dev, "removing RTCCON_CNTSEL\n");
- tmp = readw(info->base + S3C2410_RTCCON);
- writew(tmp & ~S3C2410_RTCCON_CNTSEL,
- info->base + S3C2410_RTCCON);
- }
+ tmp = readw(info->base + S3C2410_RTCCON);
+ writew(tmp & ~S3C2410_RTCCON_CNTSEL,
+ info->base + S3C2410_RTCCON);
+ }
- if (con & S3C2410_RTCCON_CLKRST) {
- dev_info(info->dev, "removing RTCCON_CLKRST\n");
+ if (con & S3C2410_RTCCON_CLKRST) {
+ dev_info(info->dev, "removing RTCCON_CLKRST\n");
- tmp = readw(info->base + S3C2410_RTCCON);
- writew(tmp & ~S3C2410_RTCCON_CLKRST,
- info->base + S3C2410_RTCCON);
- }
+ tmp = readw(info->base + S3C2410_RTCCON);
+ writew(tmp & ~S3C2410_RTCCON_CLKRST,
+ info->base + S3C2410_RTCCON);
}
+
+ clk_disable(info->rtc_clk);
+}
+
+static void s3c24xx_rtc_disable(struct s3c_rtc *info)
+{
+ unsigned int con;
+
+ clk_enable(info->rtc_clk);
+
+ con = readw(info->base + S3C2410_RTCCON);
+ con &= ~S3C2410_RTCCON_RTCEN;
+ writew(con, info->base + S3C2410_RTCCON);
+
+ con = readb(info->base + S3C2410_TICNT);
+ con &= ~S3C2410_TICNT_ENABLE;
+ writeb(con, info->base + S3C2410_TICNT);
+
+ clk_disable(info->rtc_clk);
+}
+
+static void s3c6410_rtc_disable(struct s3c_rtc *info)
+{
+ unsigned int con;
+
+ clk_enable(info->rtc_clk);
+
+ con = readw(info->base + S3C2410_RTCCON);
+ con &= ~S3C64XX_RTCCON_TICEN;
+ con &= ~S3C2410_RTCCON_RTCEN;
+ writew(con, info->base + S3C2410_RTCCON);
+
clk_disable(info->rtc_clk);
}
static const struct of_device_id s3c_rtc_dt_match[];
-static inline int s3c_rtc_get_driver_data(struct platform_device *pdev)
+static struct s3c_rtc_data *s3c_rtc_get_data(struct platform_device *pdev)
{
-#ifdef CONFIG_OF
- struct s3c_rtc_drv_data *data;
+ const struct of_device_id *match;
- if (pdev->dev.of_node) {
- const struct of_device_id *match;
-
- match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node);
- data = (struct s3c_rtc_drv_data *) match->data;
- return data->cpu_type;
- }
-#endif
- return platform_get_device_id(pdev)->driver_data;
+ match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node);
+ return (struct s3c_rtc_data *)match->data;
}
static int s3c_rtc_probe(struct platform_device *pdev)
struct rtc_time rtc_tm;
struct resource *res;
int ret;
- int tmp;
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info)
}
info->dev = &pdev->dev;
- info->cpu_type = s3c_rtc_get_driver_data(pdev);
+ info->data = s3c_rtc_get_data(pdev);
+ if (!info->data) {
+ dev_err(&pdev->dev, "failed getting s3c_rtc_data\n");
+ return -EINVAL;
+ }
spin_lock_init(&info->pie_lock);
spin_lock_init(&info->alarm_clk_lock);
clk_prepare_enable(info->rtc_clk);
/* check to see if everything is setup correctly */
- s3c_rtc_enable(info, 1);
+ if (info->data->enable)
+ info->data->enable(info);
dev_dbg(&pdev->dev, "s3c2410_rtc: RTCCON=%02x\n",
readw(info->base + S3C2410_RTCCON));
dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
}
- if (info->cpu_type != TYPE_S3C2410)
- info->rtc->max_user_freq = 32768;
- else
- info->rtc->max_user_freq = 128;
-
- if (info->cpu_type == TYPE_S3C2416 || info->cpu_type == TYPE_S3C2443) {
- tmp = readw(info->base + S3C2410_RTCCON);
- tmp |= S3C2443_RTCCON_TICSEL;
- writew(tmp, info->base + S3C2410_RTCCON);
- }
+ if (info->data->select_tick_clk)
+ info->data->select_tick_clk(info);
s3c_rtc_setfreq(info, 1);
return 0;
err_nortc:
- s3c_rtc_enable(info, 0);
+ if (info->data->disable)
+ info->data->disable(info);
clk_disable_unprepare(info->rtc_clk);
return ret;
struct s3c_rtc *info = dev_get_drvdata(dev);
clk_enable(info->rtc_clk);
+
/* save TICNT for anyone using periodic interrupts */
- if (info->cpu_type == TYPE_S3C64XX) {
- info->ticnt_en_save = readw(info->base + S3C2410_RTCCON);
- info->ticnt_en_save &= S3C64XX_RTCCON_TICEN;
- info->ticnt_save = readl(info->base + S3C2410_TICNT);
- } else {
- info->ticnt_save = readb(info->base + S3C2410_TICNT);
- }
- s3c_rtc_enable(info, 0);
+ if (info->data->save_tick_cnt)
+ info->data->save_tick_cnt(info);
+
+ if (info->data->disable)
+ info->data->disable(info);
if (device_may_wakeup(dev) && !info->wake_en) {
if (enable_irq_wake(info->irq_alarm) == 0)
else
dev_err(dev, "enable_irq_wake failed\n");
}
+
clk_disable(info->rtc_clk);
return 0;
static int s3c_rtc_resume(struct device *dev)
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- unsigned int tmp;
clk_enable(info->rtc_clk);
- s3c_rtc_enable(info, 1);
- if (info->cpu_type == TYPE_S3C64XX) {
- writel(info->ticnt_save, info->base + S3C2410_TICNT);
- if (info->ticnt_en_save) {
- tmp = readw(info->base + S3C2410_RTCCON);
- writew(tmp | info->ticnt_en_save,
- info->base + S3C2410_RTCCON);
- }
- } else {
- writeb(info->ticnt_save, info->base + S3C2410_TICNT);
- }
+
+ if (info->data->enable)
+ info->data->enable(info);
+
+ if (info->data->restore_tick_cnt)
+ info->data->restore_tick_cnt(info);
if (device_may_wakeup(dev) && info->wake_en) {
disable_irq_wake(info->irq_alarm);
info->wake_en = false;
}
+
clk_disable(info->rtc_clk);
return 0;
#endif
static SIMPLE_DEV_PM_OPS(s3c_rtc_pm_ops, s3c_rtc_suspend, s3c_rtc_resume);
-#ifdef CONFIG_OF
-static struct s3c_rtc_drv_data s3c_rtc_drv_data_array[] = {
- [TYPE_S3C2410] = { TYPE_S3C2410 },
- [TYPE_S3C2416] = { TYPE_S3C2416 },
- [TYPE_S3C2443] = { TYPE_S3C2443 },
- [TYPE_S3C64XX] = { TYPE_S3C64XX },
+static void s3c24xx_rtc_irq(struct s3c_rtc *info, int mask)
+{
+ clk_enable(info->rtc_clk);
+ rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
+ clk_disable(info->rtc_clk);
+
+ s3c_rtc_alarm_clk_enable(info, false);
+}
+
+static void s3c6410_rtc_irq(struct s3c_rtc *info, int mask)
+{
+ clk_enable(info->rtc_clk);
+ rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
+ writeb(mask, info->base + S3C2410_INTP);
+ clk_disable(info->rtc_clk);
+
+ s3c_rtc_alarm_clk_enable(info, false);
+}
+
+static void s3c2410_rtc_setfreq(struct s3c_rtc *info, int freq)
+{
+ unsigned int tmp = 0;
+ int val;
+
+ tmp = readb(info->base + S3C2410_TICNT);
+ tmp &= S3C2410_TICNT_ENABLE;
+
+ val = (info->rtc->max_user_freq / freq) - 1;
+ tmp |= val;
+
+ writel(tmp, info->base + S3C2410_TICNT);
+}
+
+static void s3c2416_rtc_setfreq(struct s3c_rtc *info, int freq)
+{
+ unsigned int tmp = 0;
+ int val;
+
+ tmp = readb(info->base + S3C2410_TICNT);
+ tmp &= S3C2410_TICNT_ENABLE;
+
+ val = (info->rtc->max_user_freq / freq) - 1;
+
+ tmp |= S3C2443_TICNT_PART(val);
+ writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1);
+
+ writel(S3C2416_TICNT2_PART(val), info->base + S3C2416_TICNT2);
+
+ writel(tmp, info->base + S3C2410_TICNT);
+}
+
+static void s3c2443_rtc_setfreq(struct s3c_rtc *info, int freq)
+{
+ unsigned int tmp = 0;
+ int val;
+
+ tmp = readb(info->base + S3C2410_TICNT);
+ tmp &= S3C2410_TICNT_ENABLE;
+
+ val = (info->rtc->max_user_freq / freq) - 1;
+
+ tmp |= S3C2443_TICNT_PART(val);
+ writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1);
+
+ writel(tmp, info->base + S3C2410_TICNT);
+}
+
+static void s3c6410_rtc_setfreq(struct s3c_rtc *info, int freq)
+{
+ int val;
+
+ val = (info->rtc->max_user_freq / freq) - 1;
+ writel(val, info->base + S3C2410_TICNT);
+}
+
+static void s3c24xx_rtc_enable_tick(struct s3c_rtc *info, struct seq_file *seq)
+{
+ unsigned int ticnt;
+
+ ticnt = readb(info->base + S3C2410_TICNT);
+ ticnt &= S3C2410_TICNT_ENABLE;
+
+ seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no");
+}
+
+static void s3c2416_rtc_select_tick_clk(struct s3c_rtc *info)
+{
+ unsigned int con;
+
+ con = readw(info->base + S3C2410_RTCCON);
+ con |= S3C2443_RTCCON_TICSEL;
+ writew(con, info->base + S3C2410_RTCCON);
+}
+
+static void s3c6410_rtc_enable_tick(struct s3c_rtc *info, struct seq_file *seq)
+{
+ unsigned int ticnt;
+
+ ticnt = readw(info->base + S3C2410_RTCCON);
+ ticnt &= S3C64XX_RTCCON_TICEN;
+
+ seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no");
+}
+
+static void s3c24xx_rtc_save_tick_cnt(struct s3c_rtc *info)
+{
+ info->ticnt_save = readb(info->base + S3C2410_TICNT);
+}
+
+static void s3c24xx_rtc_restore_tick_cnt(struct s3c_rtc *info)
+{
+ writeb(info->ticnt_save, info->base + S3C2410_TICNT);
+}
+
+static void s3c6410_rtc_save_tick_cnt(struct s3c_rtc *info)
+{
+ info->ticnt_en_save = readw(info->base + S3C2410_RTCCON);
+ info->ticnt_en_save &= S3C64XX_RTCCON_TICEN;
+ info->ticnt_save = readl(info->base + S3C2410_TICNT);
+}
+
+static void s3c6410_rtc_restore_tick_cnt(struct s3c_rtc *info)
+{
+ unsigned int con;
+
+ writel(info->ticnt_save, info->base + S3C2410_TICNT);
+ if (info->ticnt_en_save) {
+ con = readw(info->base + S3C2410_RTCCON);
+ writew(con | info->ticnt_en_save,
+ info->base + S3C2410_RTCCON);
+ }
+}
+
+static struct s3c_rtc_data const s3c2410_rtc_data = {
+ .max_user_freq = 128,
+ .irq_handler = s3c24xx_rtc_irq,
+ .set_freq = s3c2410_rtc_setfreq,
+ .enable_tick = s3c24xx_rtc_enable_tick,
+ .save_tick_cnt = s3c24xx_rtc_save_tick_cnt,
+ .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt,
+ .enable = s3c24xx_rtc_enable,
+ .disable = s3c24xx_rtc_disable,
+};
+
+static struct s3c_rtc_data const s3c2416_rtc_data = {
+ .max_user_freq = 32768,
+ .irq_handler = s3c24xx_rtc_irq,
+ .set_freq = s3c2416_rtc_setfreq,
+ .enable_tick = s3c24xx_rtc_enable_tick,
+ .select_tick_clk = s3c2416_rtc_select_tick_clk,
+ .save_tick_cnt = s3c24xx_rtc_save_tick_cnt,
+ .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt,
+ .enable = s3c24xx_rtc_enable,
+ .disable = s3c24xx_rtc_disable,
+};
+
+static struct s3c_rtc_data const s3c2443_rtc_data = {
+ .max_user_freq = 32768,
+ .irq_handler = s3c24xx_rtc_irq,
+ .set_freq = s3c2443_rtc_setfreq,
+ .enable_tick = s3c24xx_rtc_enable_tick,
+ .select_tick_clk = s3c2416_rtc_select_tick_clk,
+ .save_tick_cnt = s3c24xx_rtc_save_tick_cnt,
+ .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt,
+ .enable = s3c24xx_rtc_enable,
+ .disable = s3c24xx_rtc_disable,
+};
+
+static struct s3c_rtc_data const s3c6410_rtc_data = {
+ .max_user_freq = 32768,
+ .irq_handler = s3c6410_rtc_irq,
+ .set_freq = s3c6410_rtc_setfreq,
+ .enable_tick = s3c6410_rtc_enable_tick,
+ .save_tick_cnt = s3c6410_rtc_save_tick_cnt,
+ .restore_tick_cnt = s3c6410_rtc_restore_tick_cnt,
+ .enable = s3c24xx_rtc_enable,
+ .disable = s3c6410_rtc_disable,
};
static const struct of_device_id s3c_rtc_dt_match[] = {
{
.compatible = "samsung,s3c2410-rtc",
- .data = &s3c_rtc_drv_data_array[TYPE_S3C2410],
+ .data = (void *)&s3c2410_rtc_data,
}, {
.compatible = "samsung,s3c2416-rtc",
- .data = &s3c_rtc_drv_data_array[TYPE_S3C2416],
+ .data = (void *)&s3c2416_rtc_data,
}, {
.compatible = "samsung,s3c2443-rtc",
- .data = &s3c_rtc_drv_data_array[TYPE_S3C2443],
+ .data = (void *)&s3c2443_rtc_data,
}, {
.compatible = "samsung,s3c6410-rtc",
- .data = &s3c_rtc_drv_data_array[TYPE_S3C64XX],
+ .data = (void *)&s3c6410_rtc_data,
},
- {},
+ { /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, s3c_rtc_dt_match);
-#endif
-
-static struct platform_device_id s3c_rtc_driver_ids[] = {
- {
- .name = "s3c2410-rtc",
- .driver_data = TYPE_S3C2410,
- }, {
- .name = "s3c2416-rtc",
- .driver_data = TYPE_S3C2416,
- }, {
- .name = "s3c2443-rtc",
- .driver_data = TYPE_S3C2443,
- }, {
- .name = "s3c64xx-rtc",
- .driver_data = TYPE_S3C64XX,
- },
- { }
-};
-
-MODULE_DEVICE_TABLE(platform, s3c_rtc_driver_ids);
static struct platform_driver s3c_rtc_driver = {
.probe = s3c_rtc_probe,
.remove = s3c_rtc_remove,
- .id_table = s3c_rtc_driver_ids,
.driver = {
.name = "s3c-rtc",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(s3c_rtc_dt_match),
},
};
-
module_platform_driver(s3c_rtc_driver);
MODULE_DESCRIPTION("Samsung S3C RTC Driver");
projects / openwrt / staging / blogic.git / commitdiff