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path: root/drivers/rtc/rtc-x1205.c
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Diffstat (limited to 'drivers/rtc/rtc-x1205.c')
-rw-r--r--drivers/rtc/rtc-x1205.c53
1 files changed, 18 insertions, 35 deletions
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c
index 6583c1a8b070..9aae49139a0a 100644
--- a/drivers/rtc/rtc-x1205.c
+++ b/drivers/rtc/rtc-x1205.c
@@ -155,11 +155,11 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr)
155} 155}
156 156
157static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, 157static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
158 int datetoo, u8 reg_base, unsigned char alm_enable) 158 u8 reg_base, unsigned char alm_enable)
159{ 159{
160 int i, xfer, nbytes; 160 int i, xfer;
161 unsigned char buf[8];
162 unsigned char rdata[10] = { 0, reg_base }; 161 unsigned char rdata[10] = { 0, reg_base };
162 unsigned char *buf = rdata + 2;
163 163
164 static const unsigned char wel[3] = { 0, X1205_REG_SR, 164 static const unsigned char wel[3] = { 0, X1205_REG_SR,
165 X1205_SR_WEL }; 165 X1205_SR_WEL };
@@ -170,9 +170,9 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
170 static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 }; 170 static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 };
171 171
172 dev_dbg(&client->dev, 172 dev_dbg(&client->dev,
173 "%s: secs=%d, mins=%d, hours=%d\n", 173 "%s: sec=%d min=%d hour=%d mday=%d mon=%d year=%d wday=%d\n",
174 __func__, 174 __func__, tm->tm_sec, tm->tm_min, tm->tm_hour, tm->tm_mday,
175 tm->tm_sec, tm->tm_min, tm->tm_hour); 175 tm->tm_mon, tm->tm_year, tm->tm_wday);
176 176
177 buf[CCR_SEC] = bin2bcd(tm->tm_sec); 177 buf[CCR_SEC] = bin2bcd(tm->tm_sec);
178 buf[CCR_MIN] = bin2bcd(tm->tm_min); 178 buf[CCR_MIN] = bin2bcd(tm->tm_min);
@@ -180,23 +180,15 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
180 /* set hour and 24hr bit */ 180 /* set hour and 24hr bit */
181 buf[CCR_HOUR] = bin2bcd(tm->tm_hour) | X1205_HR_MIL; 181 buf[CCR_HOUR] = bin2bcd(tm->tm_hour) | X1205_HR_MIL;
182 182
183 /* should we also set the date? */ 183 buf[CCR_MDAY] = bin2bcd(tm->tm_mday);
184 if (datetoo) {
185 dev_dbg(&client->dev,
186 "%s: mday=%d, mon=%d, year=%d, wday=%d\n",
187 __func__,
188 tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
189 184
190 buf[CCR_MDAY] = bin2bcd(tm->tm_mday); 185 /* month, 1 - 12 */
186 buf[CCR_MONTH] = bin2bcd(tm->tm_mon + 1);
191 187
192 /* month, 1 - 12 */ 188 /* year, since the rtc epoch*/
193 buf[CCR_MONTH] = bin2bcd(tm->tm_mon + 1); 189 buf[CCR_YEAR] = bin2bcd(tm->tm_year % 100);
194 190 buf[CCR_WDAY] = tm->tm_wday & 0x07;
195 /* year, since the rtc epoch*/ 191 buf[CCR_Y2K] = bin2bcd((tm->tm_year + 1900) / 100);
196 buf[CCR_YEAR] = bin2bcd(tm->tm_year % 100);
197 buf[CCR_WDAY] = tm->tm_wday & 0x07;
198 buf[CCR_Y2K] = bin2bcd((tm->tm_year + 1900) / 100);
199 }
200 192
201 /* If writing alarm registers, set compare bits on registers 0-4 */ 193 /* If writing alarm registers, set compare bits on registers 0-4 */
202 if (reg_base < X1205_CCR_BASE) 194 if (reg_base < X1205_CCR_BASE)
@@ -214,17 +206,8 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm,
214 return -EIO; 206 return -EIO;
215 } 207 }
216 208
217 209 xfer = i2c_master_send(client, rdata, sizeof(rdata));
218 /* write register's data */ 210 if (xfer != sizeof(rdata)) {
219 if (datetoo)
220 nbytes = 8;
221 else
222 nbytes = 3;
223 for (i = 0; i < nbytes; i++)
224 rdata[2+i] = buf[i];
225
226 xfer = i2c_master_send(client, rdata, nbytes+2);
227 if (xfer != nbytes+2) {
228 dev_err(&client->dev, 211 dev_err(&client->dev,
229 "%s: result=%d addr=%02x, data=%02x\n", 212 "%s: result=%d addr=%02x, data=%02x\n",
230 __func__, 213 __func__,
@@ -282,7 +265,7 @@ static int x1205_fix_osc(struct i2c_client *client)
282 265
283 memset(&tm, 0, sizeof(tm)); 266 memset(&tm, 0, sizeof(tm));
284 267
285 err = x1205_set_datetime(client, &tm, 1, X1205_CCR_BASE, 0); 268 err = x1205_set_datetime(client, &tm, X1205_CCR_BASE, 0);
286 if (err < 0) 269 if (err < 0)
287 dev_err(&client->dev, "unable to restart the oscillator\n"); 270 dev_err(&client->dev, "unable to restart the oscillator\n");
288 271
@@ -481,7 +464,7 @@ static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
481static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) 464static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
482{ 465{
483 return x1205_set_datetime(to_i2c_client(dev), 466 return x1205_set_datetime(to_i2c_client(dev),
484 &alrm->time, 1, X1205_ALM0_BASE, alrm->enabled); 467 &alrm->time, X1205_ALM0_BASE, alrm->enabled);
485} 468}
486 469
487static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm) 470static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
@@ -493,7 +476,7 @@ static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm)
493static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm) 476static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm)
494{ 477{
495 return x1205_set_datetime(to_i2c_client(dev), 478 return x1205_set_datetime(to_i2c_client(dev),
496 tm, 1, X1205_CCR_BASE, 0); 479 tm, X1205_CCR_BASE, 0);
497} 480}
498 481
499static int x1205_rtc_proc(struct device *dev, struct seq_file *seq) 482static int x1205_rtc_proc(struct device *dev, struct seq_file *seq)