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-rw-r--r--drivers/clk/bcm/clk-kona.c28
-rw-r--r--drivers/clk/bcm/clk-kona.h1
-rw-r--r--drivers/cpuidle/governors/menu.c8
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h3
-rw-r--r--drivers/gpu/drm/i915/intel_panel.c1
-rw-r--r--drivers/hwmon/ina2xx.c17
-rw-r--r--drivers/hwmon/lm85.c26
-rw-r--r--drivers/hwmon/w83795.c8
-rw-r--r--drivers/media/dvb-frontends/cxd2820r_c.c2
-rw-r--r--drivers/media/dvb-frontends/cxd2820r_core.c6
-rw-r--r--drivers/media/dvb-frontends/cxd2820r_priv.h2
-rw-r--r--drivers/media/dvb-frontends/cxd2820r_t.c2
-rw-r--r--drivers/media/dvb-frontends/cxd2820r_t2.c2
-rw-r--r--drivers/memstick/core/mspro_block.c3
-rw-r--r--drivers/oprofile/buffer_sync.c30
-rw-r--r--drivers/rtc/Kconfig16
-rw-r--r--drivers/rtc/Makefile1
-rw-r--r--drivers/rtc/class.c6
-rw-r--r--drivers/rtc/hctosys.c6
-rw-r--r--drivers/rtc/interface.c5
-rw-r--r--drivers/rtc/rtc-ab-b5ze-s3.c2
-rw-r--r--drivers/rtc/rtc-at91rm9200.c4
-rw-r--r--drivers/rtc/rtc-cmos.c6
-rw-r--r--drivers/rtc/rtc-da9052.c97
-rw-r--r--drivers/rtc/rtc-digicolor.c227
-rw-r--r--drivers/rtc/rtc-ds1374.c8
-rw-r--r--drivers/rtc/rtc-ds1685.c9
-rw-r--r--drivers/rtc/rtc-ds3232.c6
-rw-r--r--drivers/rtc/rtc-efi-platform.c3
-rw-r--r--drivers/rtc/rtc-em3027.c11
-rw-r--r--drivers/rtc/rtc-hym8563.c12
-rw-r--r--drivers/rtc/rtc-m41t80.c6
-rw-r--r--drivers/rtc/rtc-max77686.c6
-rw-r--r--drivers/rtc/rtc-max8997.c8
-rw-r--r--drivers/rtc/rtc-msm6242.c4
-rw-r--r--drivers/rtc/rtc-omap.c68
-rw-r--r--drivers/rtc/rtc-opal.c3
-rw-r--r--drivers/rtc/rtc-pcf8563.c7
-rw-r--r--drivers/rtc/rtc-s3c.c193
-rw-r--r--drivers/rtc/rtc-s5m.c34
-rw-r--r--drivers/rtc/rtc-stmp3xxx.c66
-rw-r--r--drivers/rtc/rtc-twl.c9
-rw-r--r--drivers/rtc/rtc-x1205.c4
-rw-r--r--drivers/scsi/bfa/bfad.c22
44 files changed, 643 insertions, 345 deletions
diff --git a/drivers/clk/bcm/clk-kona.c b/drivers/clk/bcm/clk-kona.c
index 05abae89262e..a0ef4f75d457 100644
--- a/drivers/clk/bcm/clk-kona.c
+++ b/drivers/clk/bcm/clk-kona.c
@@ -15,6 +15,7 @@
#include "clk-kona.h"
#include <linux/delay.h>
+#include <linux/kernel.h>
/*
* "Policies" affect the frequencies of bus clocks provided by a
@@ -51,21 +52,6 @@ static inline u32 bitfield_replace(u32 reg_val, u32 shift, u32 width, u32 val)
/* Divider and scaling helpers */
-/*
- * Implement DIV_ROUND_CLOSEST() for 64-bit dividend and both values
- * unsigned. Note that unlike do_div(), the remainder is discarded
- * and the return value is the quotient (not the remainder).
- */
-u64 do_div_round_closest(u64 dividend, unsigned long divisor)
-{
- u64 result;
-
- result = dividend + ((u64)divisor >> 1);
- (void)do_div(result, divisor);
-
- return result;
-}
-
/* Convert a divider into the scaled divisor value it represents. */
static inline u64 scaled_div_value(struct bcm_clk_div *div, u32 reg_div)
{
@@ -87,7 +73,7 @@ u64 scaled_div_build(struct bcm_clk_div *div, u32 div_value, u32 billionths)
combined = (u64)div_value * BILLION + billionths;
combined <<= div->u.s.frac_width;
- return do_div_round_closest(combined, BILLION);
+ return DIV_ROUND_CLOSEST_ULL(combined, BILLION);
}
/* The scaled minimum divisor representable by a divider */
@@ -731,7 +717,7 @@ static unsigned long clk_recalc_rate(struct ccu_data *ccu,
scaled_rate = scale_rate(pre_div, parent_rate);
scaled_rate = scale_rate(div, scaled_rate);
scaled_div = divider_read_scaled(ccu, pre_div);
- scaled_parent_rate = do_div_round_closest(scaled_rate,
+ scaled_parent_rate = DIV_ROUND_CLOSEST_ULL(scaled_rate,
scaled_div);
} else {
scaled_parent_rate = scale_rate(div, parent_rate);
@@ -743,7 +729,7 @@ static unsigned long clk_recalc_rate(struct ccu_data *ccu,
* rate.
*/
scaled_div = divider_read_scaled(ccu, div);
- result = do_div_round_closest(scaled_parent_rate, scaled_div);
+ result = DIV_ROUND_CLOSEST_ULL(scaled_parent_rate, scaled_div);
return (unsigned long)result;
}
@@ -790,7 +776,7 @@ static long round_rate(struct ccu_data *ccu, struct bcm_clk_div *div,
scaled_rate = scale_rate(pre_div, parent_rate);
scaled_rate = scale_rate(div, scaled_rate);
scaled_pre_div = divider_read_scaled(ccu, pre_div);
- scaled_parent_rate = do_div_round_closest(scaled_rate,
+ scaled_parent_rate = DIV_ROUND_CLOSEST_ULL(scaled_rate,
scaled_pre_div);
} else {
scaled_parent_rate = scale_rate(div, parent_rate);
@@ -802,7 +788,7 @@ static long round_rate(struct ccu_data *ccu, struct bcm_clk_div *div,
* the best we can do.
*/
if (!divider_is_fixed(div)) {
- best_scaled_div = do_div_round_closest(scaled_parent_rate,
+ best_scaled_div = DIV_ROUND_CLOSEST_ULL(scaled_parent_rate,
rate);
min_scaled_div = scaled_div_min(div);
max_scaled_div = scaled_div_max(div);
@@ -815,7 +801,7 @@ static long round_rate(struct ccu_data *ccu, struct bcm_clk_div *div,
}
/* OK, figure out the resulting rate */
- result = do_div_round_closest(scaled_parent_rate, best_scaled_div);
+ result = DIV_ROUND_CLOSEST_ULL(scaled_parent_rate, best_scaled_div);
if (scaled_div)
*scaled_div = best_scaled_div;
diff --git a/drivers/clk/bcm/clk-kona.h b/drivers/clk/bcm/clk-kona.h
index 2537b3072910..6849a64baf6d 100644
--- a/drivers/clk/bcm/clk-kona.h
+++ b/drivers/clk/bcm/clk-kona.h
@@ -503,7 +503,6 @@ extern struct clk_ops kona_peri_clk_ops;
/* Externally visible functions */
-extern u64 do_div_round_closest(u64 dividend, unsigned long divisor);
extern u64 scaled_div_max(struct bcm_clk_div *div);
extern u64 scaled_div_build(struct bcm_clk_div *div, u32 div_value,
u32 billionths);
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 40580794e23d..b8a5fa15ca24 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -190,12 +190,6 @@ static DEFINE_PER_CPU(struct menu_device, menu_devices);
static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev);
-/* This implements DIV_ROUND_CLOSEST but avoids 64 bit division */
-static u64 div_round64(u64 dividend, u32 divisor)
-{
- return div_u64(dividend + (divisor / 2), divisor);
-}
-
/*
* Try detecting repeating patterns by keeping track of the last 8
* intervals, and checking if the standard deviation of that set
@@ -317,7 +311,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
* operands are 32 bits.
* Make sure to round up for half microseconds.
*/
- data->predicted_us = div_round64((uint64_t)data->next_timer_us *
+ data->predicted_us = DIV_ROUND_CLOSEST_ULL((uint64_t)data->next_timer_us *
data->correction_factor[data->bucket],
RESOLUTION * DECAY);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index eef79ccd0b7c..ba243db35840 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -36,9 +36,6 @@
#include <drm/drm_dp_mst_helper.h>
#include <drm/drm_rect.h>
-#define DIV_ROUND_CLOSEST_ULL(ll, d) \
-({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; })
-
/**
* _wait_for - magic (register) wait macro
*
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index d8686ce89160..08532d4ffe0a 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -30,6 +30,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/kernel.h>
#include <linux/moduleparam.h>
#include "intel_drv.h"
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index d1542b7d4bc3..4d2815079fc2 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -36,6 +36,7 @@
#include <linux/jiffies.h>
#include <linux/of.h>
#include <linux/delay.h>
+#include <linux/util_macros.h>
#include <linux/platform_data/ina2xx.h>
@@ -141,19 +142,6 @@ static const struct ina2xx_config ina2xx_config[] = {
*/
static const int ina226_avg_tab[] = { 1, 4, 16, 64, 128, 256, 512, 1024 };
-static int ina226_avg_bits(int avg)
-{
- int i;
-
- /* Get the closest average from the tab. */
- for (i = 0; i < ARRAY_SIZE(ina226_avg_tab) - 1; i++) {
- if (avg <= (ina226_avg_tab[i] + ina226_avg_tab[i + 1]) / 2)
- break;
- }
-
- return i; /* Return 0b0111 for values greater than 1024. */
-}
-
static int ina226_reg_to_interval(u16 config)
{
int avg = ina226_avg_tab[INA226_READ_AVG(config)];
@@ -171,7 +159,8 @@ static u16 ina226_interval_to_reg(int interval, u16 config)
avg = DIV_ROUND_CLOSEST(interval * 1000,
INA226_TOTAL_CONV_TIME_DEFAULT);
- avg_bits = ina226_avg_bits(avg);
+ avg_bits = find_closest(avg, ina226_avg_tab,
+ ARRAY_SIZE(ina226_avg_tab));
return (config & ~INA226_AVG_RD_MASK) | INA226_SHIFT_AVG(avg_bits);
}
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 2b4b419273fe..6ff773fcaefb 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -34,6 +34,7 @@
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/util_macros.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
@@ -190,15 +191,7 @@ static const int lm85_range_map[] = {
static int RANGE_TO_REG(long range)
{
- int i;
-
- /* Find the closest match */
- for (i = 0; i < 15; ++i) {
- if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
- break;
- }
-
- return i;
+ return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
}
#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
@@ -209,16 +202,12 @@ static const int lm85_freq_map[8] = { /* 1 Hz */
static const int adm1027_freq_map[8] = { /* 1 Hz */
11, 15, 22, 29, 35, 44, 59, 88
};
+#define FREQ_MAP_LEN 8
-static int FREQ_TO_REG(const int *map, unsigned long freq)
+static int FREQ_TO_REG(const int *map,
+ unsigned int map_size, unsigned long freq)
{
- int i;
-
- /* Find the closest match */
- for (i = 0; i < 7; ++i)
- if (freq <= (map[i] + map[i + 1]) / 2)
- break;
- return i;
+ return find_closest(freq, map, map_size);
}
static int FREQ_FROM_REG(const int *map, u8 reg)
@@ -828,7 +817,8 @@ static ssize_t set_pwm_freq(struct device *dev,
data->cfg5 &= ~ADT7468_HFPWM;
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
} else { /* Low freq. mode */
- data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
+ data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map,
+ FREQ_MAP_LEN, val);
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
(data->zone[nr].range << 4)
| data->pwm_freq[nr]);
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
index 21894131190f..49276bbdac3d 100644
--- a/drivers/hwmon/w83795.c
+++ b/drivers/hwmon/w83795.c
@@ -35,6 +35,7 @@
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/jiffies.h>
+#include <linux/util_macros.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = {
@@ -308,11 +309,8 @@ static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
unsigned long best0, best1;
/* Best fit for cksel = 0 */
- for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
- if (val > (pwm_freq_cksel0[reg0] +
- pwm_freq_cksel0[reg0 + 1]) / 2)
- break;
- }
+ reg0 = find_closest_descending(val, pwm_freq_cksel0,
+ ARRAY_SIZE(pwm_freq_cksel0));
if (val < 375) /* cksel = 1 can't beat this */
return reg0;
best0 = pwm_freq_cksel0[reg0];
diff --git a/drivers/media/dvb-frontends/cxd2820r_c.c b/drivers/media/dvb-frontends/cxd2820r_c.c
index 149fdca3fb44..72b0e2db3aab 100644
--- a/drivers/media/dvb-frontends/cxd2820r_c.c
+++ b/drivers/media/dvb-frontends/cxd2820r_c.c
@@ -79,7 +79,7 @@ int cxd2820r_set_frontend_c(struct dvb_frontend *fe)
num = if_freq / 1000; /* Hz => kHz */
num *= 0x4000;
- if_ctl = 0x4000 - cxd2820r_div_u64_round_closest(num, 41000);
+ if_ctl = 0x4000 - DIV_ROUND_CLOSEST_ULL(num, 41000);
buf[0] = (if_ctl >> 8) & 0x3f;
buf[1] = (if_ctl >> 0) & 0xff;
diff --git a/drivers/media/dvb-frontends/cxd2820r_core.c b/drivers/media/dvb-frontends/cxd2820r_core.c
index 422e84bbb008..490e090048ef 100644
--- a/drivers/media/dvb-frontends/cxd2820r_core.c
+++ b/drivers/media/dvb-frontends/cxd2820r_core.c
@@ -244,12 +244,6 @@ error:
return ret;
}
-/* 64 bit div with round closest, like DIV_ROUND_CLOSEST but 64 bit */
-u32 cxd2820r_div_u64_round_closest(u64 dividend, u32 divisor)
-{
- return div_u64(dividend + (divisor / 2), divisor);
-}
-
static int cxd2820r_set_frontend(struct dvb_frontend *fe)
{
struct cxd2820r_priv *priv = fe->demodulator_priv;
diff --git a/drivers/media/dvb-frontends/cxd2820r_priv.h b/drivers/media/dvb-frontends/cxd2820r_priv.h
index 7ff5f60c83e1..4b428959b16e 100644
--- a/drivers/media/dvb-frontends/cxd2820r_priv.h
+++ b/drivers/media/dvb-frontends/cxd2820r_priv.h
@@ -64,8 +64,6 @@ int cxd2820r_wr_reg_mask(struct cxd2820r_priv *priv, u32 reg, u8 val,
int cxd2820r_wr_regs(struct cxd2820r_priv *priv, u32 reginfo, u8 *val,
int len);
-u32 cxd2820r_div_u64_round_closest(u64 dividend, u32 divisor);
-
int cxd2820r_wr_regs(struct cxd2820r_priv *priv, u32 reginfo, u8 *val,
int len);
diff --git a/drivers/media/dvb-frontends/cxd2820r_t.c b/drivers/media/dvb-frontends/cxd2820r_t.c
index 51401d036530..008cb2ac8480 100644
--- a/drivers/media/dvb-frontends/cxd2820r_t.c
+++ b/drivers/media/dvb-frontends/cxd2820r_t.c
@@ -103,7 +103,7 @@ int cxd2820r_set_frontend_t(struct dvb_frontend *fe)
num = if_freq / 1000; /* Hz => kHz */
num *= 0x1000000;
- if_ctl = cxd2820r_div_u64_round_closest(num, 41000);
+ if_ctl = DIV_ROUND_CLOSEST_ULL(num, 41000);
buf[0] = ((if_ctl >> 16) & 0xff);
buf[1] = ((if_ctl >> 8) & 0xff);
buf[2] = ((if_ctl >> 0) & 0xff);
diff --git a/drivers/media/dvb-frontends/cxd2820r_t2.c b/drivers/media/dvb-frontends/cxd2820r_t2.c
index 9c0c4f42175c..35fe364c7182 100644
--- a/drivers/media/dvb-frontends/cxd2820r_t2.c
+++ b/drivers/media/dvb-frontends/cxd2820r_t2.c
@@ -120,7 +120,7 @@ int cxd2820r_set_frontend_t2(struct dvb_frontend *fe)
num = if_freq / 1000; /* Hz => kHz */
num *= 0x1000000;
- if_ctl = cxd2820r_div_u64_round_closest(num, 41000);
+ if_ctl = DIV_ROUND_CLOSEST_ULL(num, 41000);
buf[0] = ((if_ctl >> 16) & 0xff);
buf[1] = ((if_ctl >> 8) & 0xff);
buf[2] = ((if_ctl >> 0) & 0xff);
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index fc145d202c46..922a750640e8 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -758,7 +758,7 @@ static int mspro_block_complete_req(struct memstick_dev *card, int error)
if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
if (msb->data_dir == READ) {
- for (cnt = 0; cnt < msb->current_seg; cnt++)
+ for (cnt = 0; cnt < msb->current_seg; cnt++) {
t_len += msb->req_sg[cnt].length
/ msb->page_size;
@@ -766,6 +766,7 @@ static int mspro_block_complete_req(struct memstick_dev *card, int error)
t_len += msb->current_page - 1;
t_len *= msb->page_size;
+ }
}
} else
t_len = blk_rq_bytes(msb->block_req);
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index d93b2b6b1f7a..82f7000a285d 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -21,6 +21,7 @@
* objects.
*/
+#include <linux/file.h>
#include <linux/mm.h>
#include <linux/workqueue.h>
#include <linux/notifier.h>
@@ -224,10 +225,18 @@ static inline unsigned long fast_get_dcookie(struct path *path)
static unsigned long get_exec_dcookie(struct mm_struct *mm)
{
unsigned long cookie = NO_COOKIE;
+ struct file *exe_file;
- if (mm && mm->exe_file)
- cookie = fast_get_dcookie(&mm->exe_file->f_path);
+ if (!mm)
+ goto done;
+
+ exe_file = get_mm_exe_file(mm);
+ if (!exe_file)
+ goto done;
+ cookie = fast_get_dcookie(&exe_file->f_path);
+ fput(exe_file);
+done:
return cookie;
}
@@ -236,6 +245,8 @@ static unsigned long get_exec_dcookie(struct mm_struct *mm)
* pair that can then be added to the global event buffer. We make
* sure to do this lookup before a mm->mmap modification happens so
* we don't lose track.
+ *
+ * The caller must ensure the mm is not nil (ie: not a kernel thread).
*/
static unsigned long
lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset)
@@ -243,6 +254,7 @@ lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset)
unsigned long cookie = NO_COOKIE;
struct vm_area_struct *vma;
+ down_read(&mm->mmap_sem);
for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
if (addr < vma->vm_start || addr >= vma->vm_end)
@@ -262,6 +274,7 @@ lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset)
if (!vma)
cookie = INVALID_COOKIE;
+ up_read(&mm->mmap_sem);
return cookie;
}
@@ -402,20 +415,9 @@ static void release_mm(struct mm_struct *mm)
{
if (!mm)
return;
- up_read(&mm->mmap_sem);
mmput(mm);
}
-
-static struct mm_struct *take_tasks_mm(struct task_struct *task)
-{
- struct mm_struct *mm = get_task_mm(task);
- if (mm)
- down_read(&mm->mmap_sem);
- return mm;
-}
-
-
static inline int is_code(unsigned long val)
{
return val == ESCAPE_CODE;
@@ -532,7 +534,7 @@ void sync_buffer(int cpu)
new = (struct task_struct *)val;
oldmm = mm;
release_mm(oldmm);
- mm = take_tasks_mm(new);
+ mm = get_task_mm(new);
if (mm != oldmm)
cookie = get_exec_dcookie(mm);
add_user_ctx_switch(new, cookie);
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index b5b5c3d485d6..6149ae01e11f 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1111,6 +1111,16 @@ config RTC_DRV_DAVINCI
This driver can also be built as a module. If so, the module
will be called rtc-davinci.
+config RTC_DRV_DIGICOLOR
+ tristate "Conexant Digicolor RTC"
+ depends on ARCH_DIGICOLOR
+ help
+ If you say yes here you get support for the RTC on Conexant
+ Digicolor platforms. This currently includes the CX92755 SoC.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-digicolor.
+
config RTC_DRV_IMXDI
tristate "Freescale IMX DryIce Real Time Clock"
depends on ARCH_MXC
@@ -1121,11 +1131,11 @@ config RTC_DRV_IMXDI
will be called "rtc-imxdi".
config RTC_DRV_OMAP
- tristate "TI OMAP1"
- depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
+ tristate "TI OMAP Real Time Clock"
+ depends on ARCH_OMAP || ARCH_DAVINCI
help
Say "yes" here to support the on chip real time clock
- present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
+ present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
This driver can also be built as a module, if so, module
will be called rtc-omap.
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 69c87062b098..c31731c29762 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_RTC_DRV_DA9052) += rtc-da9052.o
obj-$(CONFIG_RTC_DRV_DA9055) += rtc-da9055.o
obj-$(CONFIG_RTC_DRV_DA9063) += rtc-da9063.o
obj-$(CONFIG_RTC_DRV_DAVINCI) += rtc-davinci.o
+obj-$(CONFIG_RTC_DRV_DIGICOLOR) += rtc-digicolor.o
obj-$(CONFIG_RTC_DRV_DM355EVM) += rtc-dm355evm.o
obj-$(CONFIG_RTC_DRV_VRTC) += rtc-mrst.o
obj-$(CONFIG_RTC_DRV_DS1216) += rtc-ds1216.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index c29ba7e14304..ea2a315df6b7 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -221,15 +221,15 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
rtc->pie_timer.function = rtc_pie_update_irq;
rtc->pie_enabled = 0;
+ strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
+ dev_set_name(&rtc->dev, "rtc%d", id);
+
/* Check to see if there is an ALARM already set in hw */
err = __rtc_read_alarm(rtc, &alrm);
if (!err && !rtc_valid_tm(&alrm.time))
rtc_initialize_alarm(rtc, &alrm);
- strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
- dev_set_name(&rtc->dev, "rtc%d", id);
-
rtc_dev_prepare(rtc);
err = device_register(&rtc->dev);
diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c
index 6c719f23520a..e1cfa06810ef 100644
--- a/drivers/rtc/hctosys.c
+++ b/drivers/rtc/hctosys.c
@@ -9,6 +9,8 @@
* published by the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/rtc.h>
/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary
@@ -32,8 +34,8 @@ static int __init rtc_hctosys(void)
struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
if (rtc == NULL) {
- pr_err("%s: unable to open rtc device (%s)\n",
- __FILE__, CONFIG_RTC_HCTOSYS_DEVICE);
+ pr_info("unable to open rtc device (%s)\n",
+ CONFIG_RTC_HCTOSYS_DEVICE);
goto err_open;
}
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index d43ee409a5f2..166fc60d8b55 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -31,13 +31,14 @@ static int __rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm)
memset(tm, 0, sizeof(struct rtc_time));
err = rtc->ops->read_time(rtc->dev.parent, tm);
if (err < 0) {
- dev_err(&rtc->dev, "read_time: fail to read\n");
+ dev_dbg(&rtc->dev, "read_time: fail to read: %d\n",
+ err);
return err;
}
err = rtc_valid_tm(tm);
if (err < 0)
- dev_err(&rtc->dev, "read_time: rtc_time isn't valid\n");
+ dev_dbg(&rtc->dev, "read_time: rtc_time isn't valid\n");
}
return err;
}
diff --git a/drivers/rtc/rtc-ab-b5ze-s3.c b/drivers/rtc/rtc-ab-b5ze-s3.c
index cfc2ef98d393..b5cbc1bf5a3e 100644
--- a/drivers/rtc/rtc-ab-b5ze-s3.c
+++ b/drivers/rtc/rtc-ab-b5ze-s3.c
@@ -881,7 +881,7 @@ static const struct rtc_class_ops rtc_ops = {
.alarm_irq_enable = abb5zes3_rtc_alarm_irq_enable,
};
-static struct regmap_config abb5zes3_rtc_regmap_config = {
+static const struct regmap_config abb5zes3_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index b283a1a573b3..35efd3f75b18 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -37,9 +37,9 @@
#include "rtc-at91rm9200.h"
#define at91_rtc_read(field) \
- __raw_readl(at91_rtc_regs + field)
+ readl_relaxed(at91_rtc_regs + field)
#define at91_rtc_write(field, val) \
- __raw_writel((val), at91_rtc_regs + field)
+ writel_relaxed((val), at91_rtc_regs + field)
#define AT91_RTC_EPOCH 1900UL /* just like arch/arm/common/rtctime.c */
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 87647f459198..a82556a0757a 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -28,6 +28,9 @@
* interrupts disabled, holding the global rtc_lock, to exclude those
* other drivers and utilities on correctly configured systems.
*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
@@ -385,8 +388,7 @@ static bool alarm_disable_quirk;
static int __init set_alarm_disable_quirk(const struct dmi_system_id *id)
{
alarm_disable_quirk = true;
- pr_info("rtc-cmos: BIOS has alarm-disable quirk. ");
- pr_info("RTC alarms disabled\n");
+ pr_info("BIOS has alarm-disable quirk - RTC alarms disabled\n");
return 0;
}
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index 613c43b7e9ae..1ba4371cbc2d 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -16,6 +16,7 @@
#include <linux/platform_device.h>
#include <linux/rtc.h>
#include <linux/err.h>
+#include <linux/delay.h>
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>
@@ -23,6 +24,8 @@
#define rtc_err(rtc, fmt, ...) \
dev_err(rtc->da9052->dev, "%s: " fmt, __func__, ##__VA_ARGS__)
+#define DA9052_GET_TIME_RETRIES 5
+
struct da9052_rtc {
struct rtc_device *rtc;
struct da9052 *da9052;
@@ -58,22 +61,43 @@ static irqreturn_t da9052_rtc_irq(int irq, void *data)
static int da9052_read_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)
{
int ret;
- uint8_t v[5];
+ uint8_t v[2][5];
+ int idx = 1;
+ int timeout = DA9052_GET_TIME_RETRIES;
- ret = da9052_group_read(rtc->da9052, DA9052_ALARM_MI_REG, 5, v);
- if (ret != 0) {
+ ret = da9052_group_read(rtc->da9052, DA9052_ALARM_MI_REG, 5, &v[0][0]);
+ if (ret) {
rtc_err(rtc, "Failed to group read ALM: %d\n", ret);
return ret;
}
- rtc_tm->tm_year = (v[4] & DA9052_RTC_YEAR) + 100;
- rtc_tm->tm_mon = (v[3] & DA9052_RTC_MONTH) - 1;
- rtc_tm->tm_mday = v[2] & DA9052_RTC_DAY;
- rtc_tm->tm_hour = v[1] & DA9052_RTC_HOUR;
- rtc_tm->tm_min = v[0] & DA9052_RTC_MIN;
+ do {
+ ret = da9052_group_read(rtc->da9052,
+ DA9052_ALARM_MI_REG, 5, &v[idx][0]);
+ if (ret) {
+ rtc_err(rtc, "Failed to group read ALM: %d\n", ret);
+ return ret;
+ }
- ret = rtc_valid_tm(rtc_tm);
- return ret;
+ if (memcmp(&v[0][0], &v[1][0], 5) == 0) {
+ rtc_tm->tm_year = (v[0][4] & DA9052_RTC_YEAR) + 100;
+ rtc_tm->tm_mon = (v[0][3] & DA9052_RTC_MONTH) - 1;
+ rtc_tm->tm_mday = v[0][2] & DA9052_RTC_DAY;
+ rtc_tm->tm_hour = v[0][1] & DA9052_RTC_HOUR;
+ rtc_tm->tm_min = v[0][0] & DA9052_RTC_MIN;
+
+ ret = rtc_valid_tm(rtc_tm);
+ return ret;
+ }
+
+ idx = (1-idx);
+ msleep(20);
+
+ } while (timeout--);
+
+ rtc_err(rtc, "Timed out reading alarm time\n");
+
+ return -EIO;
}
static int da9052_set_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)
@@ -135,24 +159,45 @@ static int da9052_rtc_get_alarm_status(struct da9052_rtc *rtc)
static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
{
struct da9052_rtc *rtc = dev_get_drvdata(dev);
- uint8_t v[6];
int ret;
+ uint8_t v[2][6];
+ int idx = 1;
+ int timeout = DA9052_GET_TIME_RETRIES;
- ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, v);
- if (ret < 0) {
+ ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, &v[0][0]);
+ if (ret) {
rtc_err(rtc, "Failed to read RTC time : %d\n", ret);
return ret;
}
- rtc_tm->tm_year = (v[5] & DA9052_RTC_YEAR) + 100;
- rtc_tm->tm_mon = (v[4] & DA9052_RTC_MONTH) - 1;
- rtc_tm->tm_mday = v[3] & DA9052_RTC_DAY;
- rtc_tm->tm_hour = v[2] & DA9052_RTC_HOUR;
- rtc_tm->tm_min = v[1] & DA9052_RTC_MIN;
- rtc_tm->tm_sec = v[0] & DA9052_RTC_SEC;
+ do {
+ ret = da9052_group_read(rtc->da9052,
+ DA9052_COUNT_S_REG, 6, &v[idx][0]);
+ if (ret) {
+ rtc_err(rtc, "Failed to read RTC time : %d\n", ret);
+ return ret;
+ }
- ret = rtc_valid_tm(rtc_tm);
- return ret;
+ if (memcmp(&v[0][0], &v[1][0], 6) == 0) {
+ rtc_tm->tm_year = (v[0][5] & DA9052_RTC_YEAR) + 100;
+ rtc_tm->tm_mon = (v[0][4] & DA9052_RTC_MONTH) - 1;
+ rtc_tm->tm_mday = v[0][3] & DA9052_RTC_DAY;
+ rtc_tm->tm_hour = v[0][2] & DA9052_RTC_HOUR;
+ rtc_tm->tm_min = v[0][1] & DA9052_RTC_MIN;
+ rtc_tm->tm_sec = v[0][0] & DA9052_RTC_SEC;
+
+ ret = rtc_valid_tm(rtc_tm);
+ return ret;
+ }
+
+ idx = (1-idx);
+ msleep(20);
+
+ } while (timeout--);
+
+ rtc_err(rtc, "Timed out reading time\n");
+
+ return -EIO;
}
static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm)
@@ -161,6 +206,10 @@ static int da9052_rtc_set_time(struct device *dev, struct rtc_time *tm)
uint8_t v[6];
int ret;
+ /* DA9052 only has 6 bits for year - to represent 2000-2063 */
+ if ((tm->tm_year < 100) || (tm->tm_year > 163))
+ return -EINVAL;
+
rtc = dev_get_drvdata(dev);
v[0] = tm->tm_sec;
@@ -198,6 +247,10 @@ static int da9052_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
struct rtc_time *tm = &alrm->time;
struct da9052_rtc *rtc = dev_get_drvdata(dev);
+ /* DA9052 only has 6 bits for year - to represent 2000-2063 */
+ if ((tm->tm_year < 100) || (tm->tm_year > 163))
+ return -EINVAL;
+
ret = da9052_rtc_enable_alarm(rtc, 0);
if (ret < 0)
return ret;
@@ -256,6 +309,8 @@ static int da9052_rtc_probe(struct platform_device *pdev)
return ret;
}
+ device_init_wakeup(&pdev->dev, true);
+
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&da9052_rtc_ops, THIS_MODULE);
return PTR_ERR_OR_ZERO(rtc->rtc);
diff --git a/drivers/rtc/rtc-digicolor.c b/drivers/rtc/rtc-digicolor.c
new file mode 100644
index 000000000000..8d05596a6765
--- /dev/null
+++ b/drivers/rtc/rtc-digicolor.c
@@ -0,0 +1,227 @@
+/*
+ * Real Time Clock driver for Conexant Digicolor
+ *
+ * Copyright (C) 2015 Paradox Innovation Ltd.
+ *
+ * Author: Baruch Siach <baruch@tkos.co.il>
+ *
+ * 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.
+ */
+
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+#include <linux/of.h>
+
+#define DC_RTC_CONTROL 0x0
+#define DC_RTC_TIME 0x8
+#define DC_RTC_REFERENCE 0xc
+#define DC_RTC_ALARM 0x10
+#define DC_RTC_INTFLAG_CLEAR 0x14
+#define DC_RTC_INTENABLE 0x16
+
+#define DC_RTC_CMD_MASK 0xf
+#define DC_RTC_GO_BUSY BIT(7)
+
+#define CMD_NOP 0
+#define CMD_RESET 1
+#define CMD_WRITE 3
+#define CMD_READ 4
+
+#define CMD_DELAY_US (10*1000)
+#define CMD_TIMEOUT_US (500*CMD_DELAY_US)
+
+struct dc_rtc {
+ struct rtc_device *rtc_dev;
+ void __iomem *regs;
+};
+
+static int dc_rtc_cmds(struct dc_rtc *rtc, const u8 *cmds, int len)
+{
+ u8 val;
+ int i, ret;
+
+ for (i = 0; i < len; i++) {
+ writeb_relaxed((cmds[i] & DC_RTC_CMD_MASK) | DC_RTC_GO_BUSY,
+ rtc->regs + DC_RTC_CONTROL);
+ ret = readb_relaxed_poll_timeout(
+ rtc->regs + DC_RTC_CONTROL, val,
+ !(val & DC_RTC_GO_BUSY), CMD_DELAY_US, CMD_TIMEOUT_US);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int dc_rtc_read(struct dc_rtc *rtc, unsigned long *val)
+{
+ static const u8 read_cmds[] = {CMD_READ, CMD_NOP};
+ u32 reference, time1, time2;
+ int ret;
+
+ ret = dc_rtc_cmds(rtc, read_cmds, ARRAY_SIZE(read_cmds));
+ if (ret < 0)
+ return ret;
+
+ reference = readl_relaxed(rtc->regs + DC_RTC_REFERENCE);
+ time1 = readl_relaxed(rtc->regs + DC_RTC_TIME);
+ /* Read twice to ensure consistency */
+ while (1) {
+ time2 = readl_relaxed(rtc->regs + DC_RTC_TIME);
+ if (time1 == time2)
+ break;
+ time1 = time2;
+ }
+
+ *val = reference + time1;
+ return 0;
+}
+
+static int dc_rtc_write(struct dc_rtc *rtc, u32 val)
+{
+ static const u8 write_cmds[] = {CMD_WRITE, CMD_NOP, CMD_RESET, CMD_NOP};
+
+ writel_relaxed(val, rtc->regs + DC_RTC_REFERENCE);
+ return dc_rtc_cmds(rtc, write_cmds, ARRAY_SIZE(write_cmds));
+}
+
+static int dc_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+ unsigned long now;
+ int ret;
+
+ ret = dc_rtc_read(rtc, &now);
+ if (ret < 0)
+ return ret;
+ rtc_time64_to_tm(now, tm);
+
+ return 0;
+}
+
+static int dc_rtc_set_mmss(struct device *dev, unsigned long secs)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+
+ return dc_rtc_write(rtc, secs);
+}
+
+static int dc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+ u32 alarm_reg, reference;
+ unsigned long now;
+ int ret;
+
+ alarm_reg = readl_relaxed(rtc->regs + DC_RTC_ALARM);
+ reference = readl_relaxed(rtc->regs + DC_RTC_REFERENCE);
+ rtc_time64_to_tm(reference + alarm_reg, &alarm->time);
+
+ ret = dc_rtc_read(rtc, &now);
+ if (ret < 0)
+ return ret;
+
+ alarm->pending = alarm_reg + reference > now;
+ alarm->enabled = readl_relaxed(rtc->regs + DC_RTC_INTENABLE);
+
+ return 0;
+}
+
+static int dc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+ time64_t alarm_time;
+ u32 reference;
+
+ alarm_time = rtc_tm_to_time64(&alarm->time);
+
+ reference = readl_relaxed(rtc->regs + DC_RTC_REFERENCE);
+ writel_relaxed(alarm_time - reference, rtc->regs + DC_RTC_ALARM);
+
+ writeb_relaxed(!!alarm->enabled, rtc->regs + DC_RTC_INTENABLE);
+
+ return 0;
+}
+
+static int dc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct dc_rtc *rtc = dev_get_drvdata(dev);
+
+ writeb_relaxed(!!enabled, rtc->regs + DC_RTC_INTENABLE);
+
+ return 0;
+}
+
+static struct rtc_class_ops dc_rtc_ops = {
+ .read_time = dc_rtc_read_time,
+ .set_mmss = dc_rtc_set_mmss,
+ .read_alarm = dc_rtc_read_alarm,
+ .set_alarm = dc_rtc_set_alarm,
+ .alarm_irq_enable = dc_rtc_alarm_irq_enable,
+};
+
+static irqreturn_t dc_rtc_irq(int irq, void *dev_id)
+{
+ struct dc_rtc *rtc = dev_id;
+
+ writeb_relaxed(1, rtc->regs + DC_RTC_INTFLAG_CLEAR);
+ rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
+
+ return IRQ_HANDLED;
+}
+
+static int __init dc_rtc_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct dc_rtc *rtc;
+ int irq, ret;
+
+ rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
+ if (!rtc)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rtc->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(rtc->regs))
+ return PTR_ERR(rtc->regs);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+ ret = devm_request_irq(&pdev->dev, irq, dc_rtc_irq, 0, pdev->name, rtc);
+ if (ret < 0)
+ return ret;
+
+ platform_set_drvdata(pdev, rtc);
+ rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, pdev->name,
+ &dc_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc->rtc_dev))
+ return PTR_ERR(rtc->rtc_dev);
+
+ return 0;
+}
+
+static const struct of_device_id dc_dt_ids[] = {
+ { .compatible = "cnxt,cx92755-rtc" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, dc_dt_ids);
+
+static struct platform_driver dc_rtc_driver = {
+ .driver = {
+ .name = "digicolor_rtc",
+ .of_match_table = of_match_ptr(dc_dt_ids),
+ },
+};
+module_platform_driver_probe(dc_rtc_driver, dc_rtc_probe);
+
+MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>");
+MODULE_DESCRIPTION("Conexant Digicolor Realtime Clock Driver (RTC)");
+MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 8605fde394b2..167783fa7ac1 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -18,6 +18,8 @@
* "Sending and receiving", using SMBus level communication is preferred.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
@@ -406,7 +408,7 @@ static int ds1374_wdt_settimeout(unsigned int timeout)
/* Set new watchdog time */
ret = ds1374_write_rtc(save_client, timeout, DS1374_REG_WDALM0, 3);
if (ret) {
- pr_info("rtc-ds1374 - couldn't set new watchdog time\n");
+ pr_info("couldn't set new watchdog time\n");
goto out;
}
@@ -539,12 +541,12 @@ static long ds1374_wdt_ioctl(struct file *file, unsigned int cmd,
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
- pr_info("rtc-ds1374: disable watchdog\n");
+ pr_info("disable watchdog\n");
ds1374_wdt_disable();
}
if (options & WDIOS_ENABLECARD) {
- pr_info("rtc-ds1374: enable watchdog\n");
+ pr_info("enable watchdog\n");
ds1374_wdt_settimeout(wdt_margin);
ds1374_wdt_ping();
}
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index 803869c7d7c2..818a3635a8c8 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -16,6 +16,8 @@
* published by the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/io.h>
@@ -799,7 +801,7 @@ 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);
u8 ctrla, ctrlb, ctrlc, ctrld, ctrl4a, ctrl4b, ssn[8];
- char *model = '\0';
+ char *model;
#ifdef CONFIG_RTC_DS1685_PROC_REGS
char bits[NUM_REGS][(NUM_BITS * NUM_SPACES) + NUM_BITS + 1];
#endif
@@ -2139,7 +2141,6 @@ ds1685_rtc_remove(struct platform_device *pdev)
static struct platform_driver ds1685_rtc_driver = {
.driver = {
.name = "rtc-ds1685",
- .owner = THIS_MODULE,
},
.probe = ds1685_rtc_probe,
.remove = ds1685_rtc_remove,
@@ -2175,7 +2176,7 @@ module_exit(ds1685_rtc_exit);
* ds1685_rtc_poweroff - uses the RTC chip to power the system off.
* @pdev: pointer to platform_device structure.
*/
-extern void __noreturn
+void __noreturn
ds1685_rtc_poweroff(struct platform_device *pdev)
{
u8 ctrla, ctrl4a, ctrl4b;
@@ -2183,7 +2184,7 @@ ds1685_rtc_poweroff(struct platform_device *pdev)
/* Check for valid RTC data, else, spin forever. */
if (unlikely(!pdev)) {
- pr_emerg("rtc-ds1685: platform device data not available, spinning forever ...\n");
+ pr_emerg("platform device data not available, spinning forever ...\n");
unreachable();
} else {
/* Get the rtc data. */
diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c
index adaf06c41479..7e48e532214f 100644
--- a/drivers/rtc/rtc-ds3232.c
+++ b/drivers/rtc/rtc-ds3232.c
@@ -15,6 +15,8 @@
* "Sending and receiving", using SMBus level communication is preferred.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
@@ -373,8 +375,8 @@ static void ds3232_work(struct work_struct *work)
if (stat & DS3232_REG_SR_A1F) {
control = i2c_smbus_read_byte_data(client, DS3232_REG_CR);
if (control < 0) {
- pr_warn("Read DS3232 Control Register error."
- "Disable IRQ%d.\n", client->irq);
+ pr_warn("Read Control Register error - Disable IRQ%d\n",
+ client->irq);
} else {
/* disable alarm1 interrupt */
control &= ~(DS3232_REG_CR_A1IE);
diff --git a/drivers/rtc/rtc-efi-platform.c b/drivers/rtc/rtc-efi-platform.c
index b40fbe332af4..1a7f1d1bc174 100644
--- a/drivers/rtc/rtc-efi-platform.c
+++ b/drivers/rtc/rtc-efi-platform.c
@@ -8,6 +8,9 @@
* Copyright (C) 1999-2000 VA Linux Systems
* Copyright (C) 1999-2000 Walt Drummond <drummond@valinux.com>
*/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c
index fccf36699245..4f4930a2004c 100644
--- a/drivers/rtc/rtc-em3027.c
+++ b/drivers/rtc/rtc-em3027.c
@@ -15,6 +15,7 @@
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/module.h>
+#include <linux/of.h>
/* Registers */
#define EM3027_REG_ON_OFF_CTRL 0x00
@@ -135,10 +136,20 @@ static struct i2c_device_id em3027_id[] = {
{ "em3027", 0 },
{ }
};
+MODULE_DEVICE_TABLE(i2c, em3027_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id em3027_of_match[] = {
+ { .compatible = "emmicro,em3027", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, em3027_of_match);
+#endif
static struct i2c_driver em3027_driver = {
.driver = {
.name = "rtc-em3027",
+ .of_match_table = of_match_ptr(em3027_of_match),
},
.probe = &em3027_probe,
.id_table = em3027_id,
diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index b936bb4096b5..0f710e98538f 100644
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -66,7 +66,7 @@
#define HYM8563_ALM_BIT_DISABLE BIT(7)
#define HYM8563_CLKOUT 0x0d
-#define HYM8563_CLKOUT_DISABLE BIT(7)
+#define HYM8563_CLKOUT_ENABLE BIT(7)
#define HYM8563_CLKOUT_32768 0
#define HYM8563_CLKOUT_1024 1
#define HYM8563_CLKOUT_32 2
@@ -309,7 +309,7 @@ static unsigned long hym8563_clkout_recalc_rate(struct clk_hw *hw,
struct i2c_client *client = hym8563->client;
int ret = i2c_smbus_read_byte_data(client, HYM8563_CLKOUT);
- if (ret < 0 || ret & HYM8563_CLKOUT_DISABLE)
+ if (ret < 0)
return 0;
ret &= HYM8563_CLKOUT_MASK;
@@ -360,9 +360,9 @@ static int hym8563_clkout_control(struct clk_hw *hw, bool enable)
return ret;
if (enable)
- ret &= ~HYM8563_CLKOUT_DISABLE;
+ ret |= HYM8563_CLKOUT_ENABLE;
else
- ret |= HYM8563_CLKOUT_DISABLE;
+ ret &= ~HYM8563_CLKOUT_ENABLE;
return i2c_smbus_write_byte_data(client, HYM8563_CLKOUT, ret);
}
@@ -386,7 +386,7 @@ static int hym8563_clkout_is_prepared(struct clk_hw *hw)
if (ret < 0)
return ret;
- return !(ret & HYM8563_CLKOUT_DISABLE);
+ return !!(ret & HYM8563_CLKOUT_ENABLE);
}
static const struct clk_ops hym8563_clkout_ops = {
@@ -407,7 +407,7 @@ static struct clk *hym8563_clkout_register_clk(struct hym8563 *hym8563)
int ret;
ret = i2c_smbus_write_byte_data(client, HYM8563_CLKOUT,
- HYM8563_CLKOUT_DISABLE);
+ 0);
if (ret < 0)
return ERR_PTR(ret);
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 7ff7427c2e6a..a82937e2f824 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -13,6 +13,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/bcd.h>
#include <linux/i2c.h>
#include <linux/init.h>
@@ -513,12 +515,12 @@ static int wdt_ioctl(struct file *file, unsigned int cmd,
return -EFAULT;
if (rv & WDIOS_DISABLECARD) {
- pr_info("rtc-m41t80: disable watchdog\n");
+ pr_info("disable watchdog\n");
wdt_disable();
}
if (rv & WDIOS_ENABLECARD) {
- pr_info("rtc-m41t80: enable watchdog\n");
+ pr_info("enable watchdog\n");
wdt_ping();
}
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index 9d71328e59b9..7632a87784c3 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -12,6 +12,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/slab.h>
#include <linux/rtc.h>
#include <linux/delay.h>
@@ -103,8 +105,8 @@ static int max77686_rtc_tm_to_data(struct rtc_time *tm, u8 *data)
data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
if (tm->tm_year < 100) {
- pr_warn("%s: MAX77686 RTC cannot handle the year %d."
- "Assume it's 2000.\n", __func__, 1900 + tm->tm_year);
+ pr_warn("RTC cannot handle the year %d. Assume it's 2000.\n",
+ 1900 + tm->tm_year);
return -EINVAL;
}
return 0;
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index 67fbe559d535..9e02bcda0c09 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -12,6 +12,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/slab.h>
#include <linux/rtc.h>
#include <linux/delay.h>
@@ -107,8 +109,8 @@ static int max8997_rtc_tm_to_data(struct rtc_time *tm, u8 *data)
data[RTC_YEAR] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
if (tm->tm_year < 100) {
- pr_warn("%s: MAX8997 RTC cannot handle the year %d."
- "Assume it's 2000.\n", __func__, 1900 + tm->tm_year);
+ pr_warn("RTC cannot handle the year %d. Assume it's 2000.\n",
+ 1900 + tm->tm_year);
return -EINVAL;
}
return 0;
@@ -424,7 +426,7 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
val = 0;
max8997_read_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, &val);
- pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
+ pr_info("WTSR_SMPL(0x%02x)\n", val);
}
static int max8997_rtc_init_reg(struct max8997_rtc_info *info)
diff --git a/drivers/rtc/rtc-msm6242.c b/drivers/rtc/rtc-msm6242.c
index 9bf877bdf836..c1c5c4e3b3b4 100644
--- a/drivers/rtc/rtc-msm6242.c
+++ b/drivers/rtc/rtc-msm6242.c
@@ -7,6 +7,8 @@
* Copyright (C) 1993 Hamish Macdonald
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/kernel.h>
@@ -111,7 +113,7 @@ static void msm6242_lock(struct msm6242_priv *priv)
}
if (!cnt)
- pr_warn("msm6242: timed out waiting for RTC (0x%x)\n",
+ pr_warn("timed out waiting for RTC (0x%x)\n",
msm6242_read(priv, MSM6242_CD));
}
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 8e5851aa4369..8b6355ffaff9 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -118,12 +118,15 @@
#define KICK0_VALUE 0x83e70b13
#define KICK1_VALUE 0x95a4f1e0
+struct omap_rtc;
+
struct omap_rtc_device_type {
bool has_32kclk_en;
- bool has_kicker;
bool has_irqwakeen;
bool has_pmic_mode;
bool has_power_up_reset;
+ void (*lock)(struct omap_rtc *rtc);
+ void (*unlock)(struct omap_rtc *rtc);
};
struct omap_rtc {
@@ -156,6 +159,26 @@ static inline void rtc_writel(struct omap_rtc *rtc, unsigned int reg, u32 val)
writel(val, rtc->base + reg);
}
+static void am3352_rtc_unlock(struct omap_rtc *rtc)
+{
+ rtc_writel(rtc, OMAP_RTC_KICK0_REG, KICK0_VALUE);
+ rtc_writel(rtc, OMAP_RTC_KICK1_REG, KICK1_VALUE);
+}
+
+static void am3352_rtc_lock(struct omap_rtc *rtc)
+{
+ rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+ rtc_writel(rtc, OMAP_RTC_KICK1_REG, 0);
+}
+
+static void default_rtc_unlock(struct omap_rtc *rtc)
+{
+}
+
+static void default_rtc_lock(struct omap_rtc *rtc)
+{
+}
+
/*
* We rely on the rtc framework to handle locking (rtc->ops_lock),
* so the only other requirement is that register accesses which
@@ -186,7 +209,9 @@ static irqreturn_t rtc_irq(int irq, void *dev_id)
/* alarm irq? */
if (irq_data & OMAP_RTC_STATUS_ALARM) {
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM);
+ rtc->type->lock(rtc);
events |= RTC_IRQF | RTC_AF;
}
@@ -218,9 +243,11 @@ static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
}
rtc_wait_not_busy(rtc);
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
if (rtc->type->has_irqwakeen)
rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
+ rtc->type->lock(rtc);
local_irq_enable();
return 0;
@@ -293,12 +320,14 @@ static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm)
local_irq_disable();
rtc_wait_not_busy(rtc);
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_YEARS_REG, tm->tm_year);
rtc_write(rtc, OMAP_RTC_MONTHS_REG, tm->tm_mon);
rtc_write(rtc, OMAP_RTC_DAYS_REG, tm->tm_mday);
rtc_write(rtc, OMAP_RTC_HOURS_REG, tm->tm_hour);
rtc_write(rtc, OMAP_RTC_MINUTES_REG, tm->tm_min);
rtc_write(rtc, OMAP_RTC_SECONDS_REG, tm->tm_sec);
+ rtc->type->lock(rtc);
local_irq_enable();
@@ -341,6 +370,7 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
local_irq_disable();
rtc_wait_not_busy(rtc);
+ rtc->type->unlock(rtc);
rtc_write(rtc, OMAP_RTC_ALARM_YEARS_REG, alm->time.tm_year);
rtc_write(rtc, OMAP_RTC_ALARM_MONTHS_REG, alm->time.tm_mon);
rtc_write(rtc, OMAP_RTC_ALARM_DAYS_REG, alm->time.tm_mday);
@@ -362,6 +392,7 @@ static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
if (rtc->type->has_irqwakeen)
rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
+ rtc->type->lock(rtc);
local_irq_enable();
@@ -391,6 +422,7 @@ static void omap_rtc_power_off(void)
unsigned long now;
u32 val;
+ rtc->type->unlock(rtc);
/* enable pmic_power_en control */
val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN);
@@ -423,6 +455,7 @@ static void omap_rtc_power_off(void)
val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG,
val | OMAP_RTC_INTERRUPTS_IT_ALARM2);
+ rtc->type->lock(rtc);
/*
* Wait for alarm to trigger (within two seconds) and external PMIC to
@@ -442,17 +475,21 @@ static struct rtc_class_ops omap_rtc_ops = {
static const struct omap_rtc_device_type omap_rtc_default_type = {
.has_power_up_reset = true,
+ .lock = default_rtc_lock,
+ .unlock = default_rtc_unlock,
};
static const struct omap_rtc_device_type omap_rtc_am3352_type = {
.has_32kclk_en = true,
- .has_kicker = true,
.has_irqwakeen = true,
.has_pmic_mode = true,
+ .lock = am3352_rtc_lock,
+ .unlock = am3352_rtc_unlock,
};
static const struct omap_rtc_device_type omap_rtc_da830_type = {
- .has_kicker = true,
+ .lock = am3352_rtc_lock,
+ .unlock = am3352_rtc_unlock,
};
static const struct platform_device_id omap_rtc_id_table[] = {
@@ -484,7 +521,7 @@ static const struct of_device_id omap_rtc_of_match[] = {
};
MODULE_DEVICE_TABLE(of, omap_rtc_of_match);
-static int __init omap_rtc_probe(struct platform_device *pdev)
+static int omap_rtc_probe(struct platform_device *pdev)
{
struct omap_rtc *rtc;
struct resource *res;
@@ -527,10 +564,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
- if (rtc->type->has_kicker) {
- rtc_writel(rtc, OMAP_RTC_KICK0_REG, KICK0_VALUE);
- rtc_writel(rtc, OMAP_RTC_KICK1_REG, KICK1_VALUE);
- }
+ rtc->type->unlock(rtc);
/*
* disable interrupts
@@ -593,6 +627,8 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
if (reg != new_ctrl)
rtc_write(rtc, OMAP_RTC_CTRL_REG, new_ctrl);
+ rtc->type->lock(rtc);
+
device_init_wakeup(&pdev->dev, true);
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
@@ -626,8 +662,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
err:
device_init_wakeup(&pdev->dev, false);
- if (rtc->type->has_kicker)
- rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+ rtc->type->lock(rtc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -646,11 +681,11 @@ static int __exit omap_rtc_remove(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 0);
+ rtc->type->unlock(rtc);
/* leave rtc running, but disable irqs */
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
- if (rtc->type->has_kicker)
- rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+ rtc->type->lock(rtc);
/* Disable the clock/module */
pm_runtime_put_sync(&pdev->dev);
@@ -666,6 +701,7 @@ static int omap_rtc_suspend(struct device *dev)
rtc->interrupts_reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+ rtc->type->unlock(rtc);
/*
* FIXME: the RTC alarm is not currently acting as a wakeup event
* source on some platforms, and in fact this enable() call is just
@@ -675,6 +711,7 @@ static int omap_rtc_suspend(struct device *dev)
enable_irq_wake(rtc->irq_alarm);
else
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
+ rtc->type->lock(rtc);
/* Disable the clock/module */
pm_runtime_put_sync(dev);
@@ -689,10 +726,12 @@ static int omap_rtc_resume(struct device *dev)
/* Enable the clock/module so that we can access the registers */
pm_runtime_get_sync(dev);
+ rtc->type->unlock(rtc);
if (device_may_wakeup(dev))
disable_irq_wake(rtc->irq_alarm);
else
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, rtc->interrupts_reg);
+ rtc->type->lock(rtc);
return 0;
}
@@ -709,12 +748,15 @@ static void omap_rtc_shutdown(struct platform_device *pdev)
* Keep the ALARM interrupt enabled to allow the system to power up on
* alarm events.
*/
+ rtc->type->unlock(rtc);
mask = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
mask &= OMAP_RTC_INTERRUPTS_IT_ALARM;
rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, mask);
+ rtc->type->lock(rtc);
}
static struct platform_driver omap_rtc_driver = {
+ .probe = omap_rtc_probe,
.remove = __exit_p(omap_rtc_remove),
.shutdown = omap_rtc_shutdown,
.driver = {
@@ -725,7 +767,7 @@ static struct platform_driver omap_rtc_driver = {
.id_table = omap_rtc_id_table,
};
-module_platform_driver_probe(omap_rtc_driver, omap_rtc_probe);
+module_platform_driver(omap_rtc_driver);
MODULE_ALIAS("platform:omap_rtc");
MODULE_AUTHOR("George G. Davis (and others)");
diff --git a/drivers/rtc/rtc-opal.c b/drivers/rtc/rtc-opal.c
index 95f652165fe9..7061dcae2b09 100644
--- a/drivers/rtc/rtc-opal.c
+++ b/drivers/rtc/rtc-opal.c
@@ -16,8 +16,9 @@
* along with this program.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#define DRVNAME "rtc-opal"
-#define pr_fmt(fmt) DRVNAME ": " fmt
#include <linux/module.h>
#include <linux/err.h>
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 96fb32e7d6f8..0ba7e59929be 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -246,7 +246,6 @@ static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm)
static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
{
struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
- int err;
unsigned char buf[9];
dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
@@ -272,12 +271,8 @@ static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm)
buf[PCF8563_REG_DW] = tm->tm_wday & 0x07;
- err = pcf8563_write_block_data(client, PCF8563_REG_SC,
+ return pcf8563_write_block_data(client, PCF8563_REG_SC,
9 - PCF8563_REG_SC, buf + PCF8563_REG_SC);
- if (err)
- return err;
-
- return 0;
}
#ifdef CONFIG_RTC_INTF_DEV
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index f4cf6851fae9..76cbad7a99d3 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -39,7 +39,6 @@ struct s3c_rtc {
void __iomem *base;
struct clk *rtc_clk;
struct clk *rtc_src_clk;
- bool enabled;
struct s3c_rtc_data *data;
@@ -67,26 +66,25 @@ struct s3c_rtc_data {
void (*disable) (struct s3c_rtc *info);
};
-static void s3c_rtc_alarm_clk_enable(struct s3c_rtc *info, bool enable)
+static void s3c_rtc_enable_clk(struct s3c_rtc *info)
{
unsigned long irq_flags;
spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
- if (enable) {
- if (!info->enabled) {
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
- info->enabled = true;
- }
- } else {
- if (info->enabled) {
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
- info->enabled = false;
- }
- }
+ clk_enable(info->rtc_clk);
+ if (info->data->needs_src_clk)
+ clk_enable(info->rtc_src_clk);
+ spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
+}
+
+static void s3c_rtc_disable_clk(struct s3c_rtc *info)
+{
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&info->alarm_clk_lock, irq_flags);
+ if (info->data->needs_src_clk)
+ clk_disable(info->rtc_src_clk);
+ clk_disable(info->rtc_clk);
spin_unlock_irqrestore(&info->alarm_clk_lock, irq_flags);
}
@@ -119,20 +117,16 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled)
dev_dbg(info->dev, "%s: aie=%d\n", __func__, enabled);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
+
tmp = readb(info->base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN;
if (enabled)
tmp |= S3C2410_RTCALM_ALMEN;
writeb(tmp, info->base + S3C2410_RTCALM);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
- s3c_rtc_alarm_clk_enable(info, enabled);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -143,18 +137,12 @@ static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq)
if (!is_power_of_2(freq))
return -EINVAL;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
spin_lock_irq(&info->pie_lock);
if (info->data->set_freq)
info->data->set_freq(info, freq);
spin_unlock_irq(&info->pie_lock);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
return 0;
}
@@ -165,9 +153,7 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
struct s3c_rtc *info = dev_get_drvdata(dev);
unsigned int have_retried = 0;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
retry_get_time:
rtc_tm->tm_min = readb(info->base + S3C2410_RTCMIN);
@@ -194,6 +180,8 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
rtc_tm->tm_mon = bcd2bin(rtc_tm->tm_mon);
rtc_tm->tm_year = bcd2bin(rtc_tm->tm_year);
+ s3c_rtc_disable_clk(info);
+
rtc_tm->tm_year += 100;
dev_dbg(dev, "read time %04d.%02d.%02d %02d:%02d:%02d\n",
@@ -202,10 +190,6 @@ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
rtc_tm->tm_mon -= 1;
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return rtc_valid_tm(rtc_tm);
}
@@ -225,9 +209,7 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
return -EINVAL;
}
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
writeb(bin2bcd(tm->tm_sec), info->base + S3C2410_RTCSEC);
writeb(bin2bcd(tm->tm_min), info->base + S3C2410_RTCMIN);
@@ -236,9 +218,7 @@ static int s3c_rtc_settime(struct device *dev, struct rtc_time *tm)
writeb(bin2bcd(tm->tm_mon + 1), info->base + S3C2410_RTCMON);
writeb(bin2bcd(year), info->base + S3C2410_RTCYEAR);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -249,9 +229,7 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
struct rtc_time *alm_tm = &alrm->time;
unsigned int alm_en;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
alm_tm->tm_sec = readb(info->base + S3C2410_ALMSEC);
alm_tm->tm_min = readb(info->base + S3C2410_ALMMIN);
@@ -262,6 +240,8 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
alm_en = readb(info->base + S3C2410_RTCALM);
+ s3c_rtc_disable_clk(info);
+
alrm->enabled = (alm_en & S3C2410_RTCALM_ALMEN) ? 1 : 0;
dev_dbg(dev, "read alarm %d, %04d.%02d.%02d %02d:%02d:%02d\n",
@@ -269,9 +249,7 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
1900 + alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
-
/* decode the alarm enable field */
-
if (alm_en & S3C2410_RTCALM_SECEN)
alm_tm->tm_sec = bcd2bin(alm_tm->tm_sec);
else
@@ -304,10 +282,6 @@ static int s3c_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
else
alm_tm->tm_year = -1;
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return 0;
}
@@ -317,15 +291,13 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
struct rtc_time *tm = &alrm->time;
unsigned int alrm_en;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
dev_dbg(dev, "s3c_rtc_setalarm: %d, %04d.%02d.%02d %02d:%02d:%02d\n",
alrm->enabled,
1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
+ s3c_rtc_enable_clk(info);
+
alrm_en = readb(info->base + S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN;
writeb(0x00, info->base + S3C2410_RTCALM);
@@ -348,11 +320,9 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
writeb(alrm_en, info->base + S3C2410_RTCALM);
- s3c_rtc_setaie(dev, alrm->enabled);
+ s3c_rtc_disable_clk(info);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_setaie(dev, alrm->enabled);
return 0;
}
@@ -361,16 +331,12 @@ static int s3c_rtc_proc(struct device *dev, struct seq_file *seq)
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
if (info->data->enable_tick)
info->data->enable_tick(info, seq);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_disable_clk(info);
return 0;
}
@@ -388,10 +354,6 @@ static void s3c24xx_rtc_enable(struct s3c_rtc *info)
{
unsigned int con, tmp;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
con = readw(info->base + S3C2410_RTCCON);
/* re-enable the device, and check it is ok */
if ((con & S3C2410_RTCCON_RTCEN) == 0) {
@@ -417,20 +379,12 @@ static void s3c24xx_rtc_enable(struct s3c_rtc *info)
writew(tmp & ~S3C2410_RTCCON_CLKRST,
info->base + S3C2410_RTCCON);
}
-
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
}
static void s3c24xx_rtc_disable(struct s3c_rtc *info)
{
unsigned int con;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
con = readw(info->base + S3C2410_RTCCON);
con &= ~S3C2410_RTCCON_RTCEN;
writew(con, info->base + S3C2410_RTCCON);
@@ -438,28 +392,16 @@ static void s3c24xx_rtc_disable(struct s3c_rtc *info)
con = readb(info->base + S3C2410_TICNT);
con &= ~S3C2410_TICNT_ENABLE;
writeb(con, info->base + S3C2410_TICNT);
-
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
}
static void s3c6410_rtc_disable(struct s3c_rtc *info)
{
unsigned int con;
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
con = readw(info->base + S3C2410_RTCCON);
con &= ~S3C64XX_RTCCON_TICEN;
con &= ~S3C2410_RTCCON_RTCEN;
writew(con, info->base + S3C2410_RTCCON);
-
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
}
static int s3c_rtc_remove(struct platform_device *pdev)
@@ -554,6 +496,20 @@ static int s3c_rtc_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
+ /* Check RTC Time */
+ if (s3c_rtc_gettime(&pdev->dev, &rtc_tm)) {
+ rtc_tm.tm_year = 100;
+ rtc_tm.tm_mon = 0;
+ rtc_tm.tm_mday = 1;
+ rtc_tm.tm_hour = 0;
+ rtc_tm.tm_min = 0;
+ rtc_tm.tm_sec = 0;
+
+ s3c_rtc_settime(&pdev->dev, &rtc_tm);
+
+ dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
+ }
+
/* register RTC and exit */
info->rtc = devm_rtc_device_register(&pdev->dev, "s3c", &s3c_rtcops,
THIS_MODULE);
@@ -577,36 +533,21 @@ static int s3c_rtc_probe(struct platform_device *pdev)
goto err_nortc;
}
- /* Check RTC Time */
- s3c_rtc_gettime(&pdev->dev, &rtc_tm);
-
- if (rtc_valid_tm(&rtc_tm)) {
- rtc_tm.tm_year = 100;
- rtc_tm.tm_mon = 0;
- rtc_tm.tm_mday = 1;
- rtc_tm.tm_hour = 0;
- rtc_tm.tm_min = 0;
- rtc_tm.tm_sec = 0;
-
- s3c_rtc_settime(&pdev->dev, &rtc_tm);
-
- dev_warn(&pdev->dev, "warning: invalid RTC value so initializing it\n");
- }
-
if (info->data->select_tick_clk)
info->data->select_tick_clk(info);
s3c_rtc_setfreq(info, 1);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
+ s3c_rtc_disable_clk(info);
return 0;
err_nortc:
if (info->data->disable)
info->data->disable(info);
+
+ if (info->data->needs_src_clk)
+ clk_disable_unprepare(info->rtc_src_clk);
clk_disable_unprepare(info->rtc_clk);
return ret;
@@ -618,9 +559,7 @@ static int s3c_rtc_suspend(struct device *dev)
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
+ s3c_rtc_enable_clk(info);
/* save TICNT for anyone using periodic interrupts */
if (info->data->save_tick_cnt)
@@ -636,10 +575,6 @@ static int s3c_rtc_suspend(struct device *dev)
dev_err(dev, "enable_irq_wake failed\n");
}
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return 0;
}
@@ -647,25 +582,19 @@ static int s3c_rtc_resume(struct device *dev)
{
struct s3c_rtc *info = dev_get_drvdata(dev);
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
-
if (info->data->enable)
info->data->enable(info);
if (info->data->restore_tick_cnt)
info->data->restore_tick_cnt(info);
+ s3c_rtc_disable_clk(info);
+
if (device_may_wakeup(dev) && info->wake_en) {
disable_irq_wake(info->irq_alarm);
info->wake_en = false;
}
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
return 0;
}
#endif
@@ -673,29 +602,13 @@ static SIMPLE_DEV_PM_OPS(s3c_rtc_pm_ops, s3c_rtc_suspend, s3c_rtc_resume);
static void s3c24xx_rtc_irq(struct s3c_rtc *info, int mask)
{
- clk_enable(info->rtc_clk);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- 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);
- if (info->data->needs_src_clk)
- clk_enable(info->rtc_src_clk);
rtc_update_irq(info->rtc, 1, RTC_AF | RTC_IRQF);
writeb(mask, info->base + S3C2410_INTP);
- if (info->data->needs_src_clk)
- clk_disable(info->rtc_src_clk);
- clk_disable(info->rtc_clk);
-
- s3c_rtc_alarm_clk_enable(info, false);
}
static void s3c2410_rtc_setfreq(struct s3c_rtc *info, int freq)
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 4008b84246ca..8c70d785ba73 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -15,6 +15,8 @@
* GNU General Public License for more details.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/bcd.h>
@@ -90,7 +92,7 @@ struct s5m_rtc_info {
struct regmap *regmap;
struct rtc_device *rtc_dev;
int irq;
- int device_type;
+ enum sec_device_type device_type;
int rtc_24hr_mode;
const struct s5m_rtc_reg_config *regs;
};
@@ -146,7 +148,7 @@ static int s5m8767_tm_to_data(struct rtc_time *tm, u8 *data)
data[RTC_YEAR1] = tm->tm_year > 100 ? (tm->tm_year - 100) : 0;
if (tm->tm_year < 100) {
- pr_err("s5m8767 RTC cannot handle the year %d.\n",
+ pr_err("RTC cannot handle the year %d\n",
1900 + tm->tm_year);
return -EINVAL;
} else {
@@ -187,6 +189,7 @@ static inline int s5m_check_peding_alarm_interrupt(struct s5m_rtc_info *info,
val &= S5M_ALARM0_STATUS;
break;
case S2MPS14X:
+ case S2MPS13X:
ret = regmap_read(info->s5m87xx->regmap_pmic, S2MPS14_REG_ST2,
&val);
val &= S2MPS_ALARM0_STATUS;
@@ -252,6 +255,9 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
case S2MPS14X:
data |= S2MPS_RTC_RUDR_MASK;
break;
+ case S2MPS13X:
+ data |= S2MPS13_RTC_AUDR_MASK;
+ break;
default:
return -EINVAL;
}
@@ -265,6 +271,11 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
ret = s5m8767_wait_for_udr_update(info);
+ /* On S2MPS13 the AUDR is not auto-cleared */
+ if (info->device_type == S2MPS13X)
+ regmap_update_bits(info->regmap, info->regs->rtc_udr_update,
+ S2MPS13_RTC_AUDR_MASK, 0);
+
return ret;
}
@@ -306,7 +317,7 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
u8 data[info->regs->regs_count];
int ret;
- if (info->device_type == S2MPS14X) {
+ if (info->device_type == S2MPS14X || info->device_type == S2MPS13X) {
ret = regmap_update_bits(info->regmap,
info->regs->rtc_udr_update,
S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK);
@@ -329,6 +340,7 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
s5m8767_data_to_tm(data, tm, info->rtc_24hr_mode);
break;
@@ -355,6 +367,7 @@ static int s5m_rtc_set_time(struct device *dev, struct rtc_time *tm)
break;
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
ret = s5m8767_tm_to_data(tm, data);
break;
default:
@@ -402,6 +415,7 @@ static int s5m_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
s5m8767_data_to_tm(data, &alrm->time, info->rtc_24hr_mode);
alrm->enabled = 0;
for (i = 0; i < info->regs->regs_count; i++) {
@@ -450,6 +464,7 @@ static int s5m_rtc_stop_alarm(struct s5m_rtc_info *info)
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
for (i = 0; i < info->regs->regs_count; i++)
data[i] &= ~ALARM_ENABLE_MASK;
@@ -494,6 +509,7 @@ static int s5m_rtc_start_alarm(struct s5m_rtc_info *info)
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
data[RTC_SEC] |= ALARM_ENABLE_MASK;
data[RTC_MIN] |= ALARM_ENABLE_MASK;
data[RTC_HOUR] |= ALARM_ENABLE_MASK;
@@ -533,6 +549,7 @@ static int s5m_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
case S5M8767X:
case S2MPS14X:
+ case S2MPS13X:
s5m8767_tm_to_data(&alrm->time, data);
break;
@@ -615,6 +632,7 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
break;
case S2MPS14X:
+ case S2MPS13X:
data[0] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
ret = regmap_write(info->regmap, info->regs->ctrl, data[0]);
break;
@@ -650,8 +668,9 @@ static int s5m_rtc_probe(struct platform_device *pdev)
if (!info)
return -ENOMEM;
- switch (pdata->device_type) {
+ switch (platform_get_device_id(pdev)->driver_data) {
case S2MPS14X:
+ case S2MPS13X:
regmap_cfg = &s2mps14_rtc_regmap_config;
info->regs = &s2mps_rtc_regs;
alarm_irq = S2MPS14_IRQ_RTCA0;
@@ -667,7 +686,9 @@ static int s5m_rtc_probe(struct platform_device *pdev)
alarm_irq = S5M8767_IRQ_RTCA1;
break;
default:
- dev_err(&pdev->dev, "Device type is not supported by RTC driver\n");
+ dev_err(&pdev->dev,
+ "Device type %lu is not supported by RTC driver\n",
+ platform_get_device_id(pdev)->driver_data);
return -ENODEV;
}
@@ -687,7 +708,7 @@ static int s5m_rtc_probe(struct platform_device *pdev)
info->dev = &pdev->dev;
info->s5m87xx = s5m87xx;
- info->device_type = s5m87xx->device_type;
+ info->device_type = platform_get_device_id(pdev)->driver_data;
if (s5m87xx->irq_data) {
info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq);
@@ -772,6 +793,7 @@ static SIMPLE_DEV_PM_OPS(s5m_rtc_pm_ops, s5m_rtc_suspend, s5m_rtc_resume);
static const struct platform_device_id s5m_rtc_id[] = {
{ "s5m-rtc", S5M8767X },
+ { "s2mps13-rtc", S2MPS13X },
{ "s2mps14-rtc", S2MPS14X },
{ },
};
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 2939cdcb2688..eb09eddf39b8 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -42,6 +42,8 @@
#define STMP3XXX_RTC_STAT 0x10
#define STMP3XXX_RTC_STAT_STALE_SHIFT 16
#define STMP3XXX_RTC_STAT_RTC_PRESENT 0x80000000
+#define STMP3XXX_RTC_STAT_XTAL32000_PRESENT 0x10000000
+#define STMP3XXX_RTC_STAT_XTAL32768_PRESENT 0x08000000
#define STMP3XXX_RTC_SECONDS 0x30
@@ -52,9 +54,13 @@
#define STMP3XXX_RTC_PERSISTENT0 0x60
#define STMP3XXX_RTC_PERSISTENT0_SET 0x64
#define STMP3XXX_RTC_PERSISTENT0_CLR 0x68
-#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN 0x00000002
-#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN 0x00000004
-#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE 0x00000080
+#define STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE (1 << 0)
+#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN (1 << 1)
+#define STMP3XXX_RTC_PERSISTENT0_ALARM_EN (1 << 2)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP (1 << 4)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP (1 << 5)
+#define STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ (1 << 6)
+#define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE (1 << 7)
#define STMP3XXX_RTC_PERSISTENT1 0x70
/* missing bitmask in headers */
@@ -248,6 +254,9 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
{
struct stmp3xxx_rtc_data *rtc_data;
struct resource *r;
+ u32 rtc_stat;
+ u32 pers0_set, pers0_clr;
+ u32 crystalfreq = 0;
int err;
rtc_data = devm_kzalloc(&pdev->dev, sizeof(*rtc_data), GFP_KERNEL);
@@ -268,8 +277,8 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
rtc_data->irq_alarm = platform_get_irq(pdev, 0);
- if (!(readl(STMP3XXX_RTC_STAT + rtc_data->io) &
- STMP3XXX_RTC_STAT_RTC_PRESENT)) {
+ rtc_stat = readl(rtc_data->io + STMP3XXX_RTC_STAT);
+ if (!(rtc_stat & STMP3XXX_RTC_STAT_RTC_PRESENT)) {
dev_err(&pdev->dev, "no device onboard\n");
return -ENODEV;
}
@@ -282,9 +291,54 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
return err;
}
+ /*
+ * Obviously the rtc needs a clock input to be able to run.
+ * This clock can be provided by an external 32k crystal. If that one is
+ * missing XTAL must not be disabled in suspend which consumes a
+ * lot of power. Normally the presence and exact frequency (supported
+ * are 32000 Hz and 32768 Hz) is detectable from fuses, but as reality
+ * proves these fuses are not blown correctly on all machines, so the
+ * frequency can be overridden in the device tree.
+ */
+ if (rtc_stat & STMP3XXX_RTC_STAT_XTAL32000_PRESENT)
+ crystalfreq = 32000;
+ else if (rtc_stat & STMP3XXX_RTC_STAT_XTAL32768_PRESENT)
+ crystalfreq = 32768;
+
+ of_property_read_u32(pdev->dev.of_node, "stmp,crystal-freq",
+ &crystalfreq);
+
+ switch (crystalfreq) {
+ case 32000:
+ /* keep 32kHz crystal running in low-power mode */
+ pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ |
+ STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
+ pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP;
+ break;
+ case 32768:
+ /* keep 32.768kHz crystal running in low-power mode */
+ pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
+ pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ;
+ break;
+ default:
+ dev_warn(&pdev->dev,
+ "invalid crystal-freq specified in device-tree. Assuming no crystal\n");
+ /* fall-through */
+ case 0:
+ /* keep XTAL on in low-power mode */
+ pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP;
+ pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP |
+ STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE;
+ }
+
+ writel(pers0_set, rtc_data->io + STMP3XXX_RTC_PERSISTENT0_SET);
+
writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN |
STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN |
- STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE,
+ STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE | pers0_clr,
rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR);
writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN |
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 5baea3f54926..2dc787dc06c1 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -18,6 +18,8 @@
* 2 of the License, or (at your option) any later version.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
@@ -145,8 +147,7 @@ static int twl_rtc_read_u8(u8 *data, u8 reg)
ret = twl_i2c_read_u8(TWL_MODULE_RTC, data, (rtc_reg_map[reg]));
if (ret < 0)
- pr_err("twl_rtc: Could not read TWL"
- "register %X - error %d\n", reg, ret);
+ pr_err("Could not read TWL register %X - error %d\n", reg, ret);
return ret;
}
@@ -159,8 +160,8 @@ static int twl_rtc_write_u8(u8 data, u8 reg)
ret = twl_i2c_write_u8(TWL_MODULE_RTC, data, (rtc_reg_map[reg]));
if (ret < 0)
- pr_err("twl_rtc: Could not write TWL"
- "register %X - error %d\n", reg, ret);
+ pr_err("Could not write TWL register %X - error %d\n",
+ reg, ret);
return ret;
}
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index b1de58e0b3d0..5638b7ba8b06 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -22,6 +22,7 @@
#include <linux/rtc.h>
#include <linux/delay.h>
#include <linux/module.h>
+#include <linux/bitops.h>
#define DRV_VERSION "1.0.8"
@@ -366,8 +367,7 @@ static int x1205_get_atrim(struct i2c_client *client, int *trim)
* perform sign extension. The formula is
* Catr = (atr * 0.25pF) + 11.00pF.
*/
- if (atr & 0x20)
- atr |= 0xC0;
+ atr = sign_extend32(atr, 5);
dev_dbg(&client->dev, "%s: raw atr=%x (%d)\n", __func__, atr, atr);
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index e90a3742f09d..cc3b9d3d6d40 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -1079,22 +1079,18 @@ bfad_start_ops(struct bfad_s *bfad) {
int
bfad_worker(void *ptr)
{
- struct bfad_s *bfad;
- unsigned long flags;
-
- bfad = (struct bfad_s *)ptr;
-
- while (!kthread_should_stop()) {
+ struct bfad_s *bfad = ptr;
+ unsigned long flags;
- /* Send event BFAD_E_INIT_SUCCESS */
- bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
+ if (kthread_should_stop())
+ return 0;
- spin_lock_irqsave(&bfad->bfad_lock, flags);
- bfad->bfad_tsk = NULL;
- spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+ /* Send event BFAD_E_INIT_SUCCESS */
+ bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
- break;
- }
+ spin_lock_irqsave(&bfad->bfad_lock, flags);
+ bfad->bfad_tsk = NULL;
+ spin_unlock_irqrestore(&bfad->bfad_lock, flags);
return 0;
}