Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Driver for NEC VR4100 series Real Time Clock unit. |
| 3 | * |
Yoichi Yuasa | ada8e95 | 2009-07-03 00:39:38 +0900 | [diff] [blame] | 4 | * Copyright (C) 2003-2008 Yoichi Yuasa <yuasa@linux-mips.org> |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 20 | #include <linux/err.h> |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 21 | #include <linux/fs.h> |
| 22 | #include <linux/init.h> |
Sachin Kamat | 4271e7f | 2013-11-12 15:10:34 -0800 | [diff] [blame] | 23 | #include <linux/io.h> |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 24 | #include <linux/ioport.h> |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 25 | #include <linux/interrupt.h> |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 26 | #include <linux/module.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | #include <linux/rtc.h> |
| 29 | #include <linux/spinlock.h> |
| 30 | #include <linux/types.h> |
Sachin Kamat | 4271e7f | 2013-11-12 15:10:34 -0800 | [diff] [blame] | 31 | #include <linux/uaccess.h> |
Jonathan Cameron | 5d2a503 | 2009-01-06 14:42:12 -0800 | [diff] [blame] | 32 | #include <linux/log2.h> |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 33 | |
| 34 | #include <asm/div64.h> |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 35 | |
Yoichi Yuasa | ada8e95 | 2009-07-03 00:39:38 +0900 | [diff] [blame] | 36 | MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>"); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 37 | MODULE_DESCRIPTION("NEC VR4100 series RTC driver"); |
Yoichi Yuasa | 4cad443 | 2008-07-23 21:30:48 -0700 | [diff] [blame] | 38 | MODULE_LICENSE("GPL v2"); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 39 | |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 40 | /* RTC 1 registers */ |
| 41 | #define ETIMELREG 0x00 |
| 42 | #define ETIMEMREG 0x02 |
| 43 | #define ETIMEHREG 0x04 |
| 44 | /* RFU */ |
| 45 | #define ECMPLREG 0x08 |
| 46 | #define ECMPMREG 0x0a |
| 47 | #define ECMPHREG 0x0c |
| 48 | /* RFU */ |
| 49 | #define RTCL1LREG 0x10 |
| 50 | #define RTCL1HREG 0x12 |
| 51 | #define RTCL1CNTLREG 0x14 |
| 52 | #define RTCL1CNTHREG 0x16 |
| 53 | #define RTCL2LREG 0x18 |
| 54 | #define RTCL2HREG 0x1a |
| 55 | #define RTCL2CNTLREG 0x1c |
| 56 | #define RTCL2CNTHREG 0x1e |
| 57 | |
| 58 | /* RTC 2 registers */ |
| 59 | #define TCLKLREG 0x00 |
| 60 | #define TCLKHREG 0x02 |
| 61 | #define TCLKCNTLREG 0x04 |
| 62 | #define TCLKCNTHREG 0x06 |
| 63 | /* RFU */ |
| 64 | #define RTCINTREG 0x1e |
| 65 | #define TCLOCK_INT 0x08 |
| 66 | #define RTCLONG2_INT 0x04 |
| 67 | #define RTCLONG1_INT 0x02 |
| 68 | #define ELAPSEDTIME_INT 0x01 |
| 69 | |
| 70 | #define RTC_FREQUENCY 32768 |
| 71 | #define MAX_PERIODIC_RATE 6553 |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 72 | |
| 73 | static void __iomem *rtc1_base; |
| 74 | static void __iomem *rtc2_base; |
| 75 | |
| 76 | #define rtc1_read(offset) readw(rtc1_base + (offset)) |
| 77 | #define rtc1_write(offset, value) writew((value), rtc1_base + (offset)) |
| 78 | |
| 79 | #define rtc2_read(offset) readw(rtc2_base + (offset)) |
| 80 | #define rtc2_write(offset, value) writew((value), rtc2_base + (offset)) |
| 81 | |
| 82 | static unsigned long epoch = 1970; /* Jan 1 1970 00:00:00 */ |
| 83 | |
Ingo Molnar | 34af946 | 2006-06-27 02:53:55 -0700 | [diff] [blame] | 84 | static DEFINE_SPINLOCK(rtc_lock); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 85 | static char rtc_name[] = "RTC"; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 86 | static unsigned long periodic_count; |
Yoichi Yuasa | 9b5ef64 | 2007-05-08 00:33:50 -0700 | [diff] [blame] | 87 | static unsigned int alarm_enabled; |
Anton Vorontsov | 2fac667 | 2009-01-06 14:42:11 -0800 | [diff] [blame] | 88 | static int aie_irq; |
| 89 | static int pie_irq; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 90 | |
| 91 | static inline unsigned long read_elapsed_second(void) |
| 92 | { |
| 93 | |
| 94 | unsigned long first_low, first_mid, first_high; |
| 95 | |
| 96 | unsigned long second_low, second_mid, second_high; |
| 97 | |
| 98 | do { |
| 99 | first_low = rtc1_read(ETIMELREG); |
| 100 | first_mid = rtc1_read(ETIMEMREG); |
| 101 | first_high = rtc1_read(ETIMEHREG); |
| 102 | second_low = rtc1_read(ETIMELREG); |
| 103 | second_mid = rtc1_read(ETIMEMREG); |
| 104 | second_high = rtc1_read(ETIMEHREG); |
| 105 | } while (first_low != second_low || first_mid != second_mid || |
Sachin Kamat | 0218bcf | 2013-07-03 15:06:06 -0700 | [diff] [blame] | 106 | first_high != second_high); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 107 | |
| 108 | return (first_high << 17) | (first_mid << 1) | (first_low >> 15); |
| 109 | } |
| 110 | |
| 111 | static inline void write_elapsed_second(unsigned long sec) |
| 112 | { |
| 113 | spin_lock_irq(&rtc_lock); |
| 114 | |
| 115 | rtc1_write(ETIMELREG, (uint16_t)(sec << 15)); |
| 116 | rtc1_write(ETIMEMREG, (uint16_t)(sec >> 1)); |
| 117 | rtc1_write(ETIMEHREG, (uint16_t)(sec >> 17)); |
| 118 | |
| 119 | spin_unlock_irq(&rtc_lock); |
| 120 | } |
| 121 | |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 122 | static int vr41xx_rtc_read_time(struct device *dev, struct rtc_time *time) |
| 123 | { |
| 124 | unsigned long epoch_sec, elapsed_sec; |
| 125 | |
| 126 | epoch_sec = mktime(epoch, 1, 1, 0, 0, 0); |
| 127 | elapsed_sec = read_elapsed_second(); |
| 128 | |
| 129 | rtc_time_to_tm(epoch_sec + elapsed_sec, time); |
| 130 | |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | static int vr41xx_rtc_set_time(struct device *dev, struct rtc_time *time) |
| 135 | { |
| 136 | unsigned long epoch_sec, current_sec; |
| 137 | |
| 138 | epoch_sec = mktime(epoch, 1, 1, 0, 0, 0); |
| 139 | current_sec = mktime(time->tm_year + 1900, time->tm_mon + 1, time->tm_mday, |
Sachin Kamat | 0218bcf | 2013-07-03 15:06:06 -0700 | [diff] [blame] | 140 | time->tm_hour, time->tm_min, time->tm_sec); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 141 | |
| 142 | write_elapsed_second(current_sec - epoch_sec); |
| 143 | |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | static int vr41xx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wkalrm) |
| 148 | { |
| 149 | unsigned long low, mid, high; |
| 150 | struct rtc_time *time = &wkalrm->time; |
| 151 | |
| 152 | spin_lock_irq(&rtc_lock); |
| 153 | |
| 154 | low = rtc1_read(ECMPLREG); |
| 155 | mid = rtc1_read(ECMPMREG); |
| 156 | high = rtc1_read(ECMPHREG); |
Yoichi Yuasa | 9b5ef64 | 2007-05-08 00:33:50 -0700 | [diff] [blame] | 157 | wkalrm->enabled = alarm_enabled; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 158 | |
| 159 | spin_unlock_irq(&rtc_lock); |
| 160 | |
| 161 | rtc_time_to_tm((high << 17) | (mid << 1) | (low >> 15), time); |
| 162 | |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | static int vr41xx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm) |
| 167 | { |
| 168 | unsigned long alarm_sec; |
| 169 | struct rtc_time *time = &wkalrm->time; |
| 170 | |
| 171 | alarm_sec = mktime(time->tm_year + 1900, time->tm_mon + 1, time->tm_mday, |
Sachin Kamat | 0218bcf | 2013-07-03 15:06:06 -0700 | [diff] [blame] | 172 | time->tm_hour, time->tm_min, time->tm_sec); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 173 | |
| 174 | spin_lock_irq(&rtc_lock); |
| 175 | |
Yoichi Yuasa | 9b5ef64 | 2007-05-08 00:33:50 -0700 | [diff] [blame] | 176 | if (alarm_enabled) |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 177 | disable_irq(aie_irq); |
Yoichi Yuasa | 9b5ef64 | 2007-05-08 00:33:50 -0700 | [diff] [blame] | 178 | |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 179 | rtc1_write(ECMPLREG, (uint16_t)(alarm_sec << 15)); |
| 180 | rtc1_write(ECMPMREG, (uint16_t)(alarm_sec >> 1)); |
| 181 | rtc1_write(ECMPHREG, (uint16_t)(alarm_sec >> 17)); |
| 182 | |
Yoichi Yuasa | 9b5ef64 | 2007-05-08 00:33:50 -0700 | [diff] [blame] | 183 | if (wkalrm->enabled) |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 184 | enable_irq(aie_irq); |
Yoichi Yuasa | 9b5ef64 | 2007-05-08 00:33:50 -0700 | [diff] [blame] | 185 | |
| 186 | alarm_enabled = wkalrm->enabled; |
| 187 | |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 188 | spin_unlock_irq(&rtc_lock); |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
Yoichi Yuasa | 4cad443 | 2008-07-23 21:30:48 -0700 | [diff] [blame] | 193 | static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) |
| 194 | { |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 195 | switch (cmd) { |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 196 | case RTC_EPOCH_READ: |
| 197 | return put_user(epoch, (unsigned long __user *)arg); |
| 198 | case RTC_EPOCH_SET: |
| 199 | /* Doesn't support before 1900 */ |
| 200 | if (arg < 1900) |
| 201 | return -EINVAL; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 202 | epoch = arg; |
| 203 | break; |
| 204 | default: |
Alessandro Zummo | b3969e5 | 2006-05-20 15:00:29 -0700 | [diff] [blame] | 205 | return -ENOIOCTLCMD; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | return 0; |
| 209 | } |
| 210 | |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 211 | static int vr41xx_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) |
| 212 | { |
| 213 | spin_lock_irq(&rtc_lock); |
| 214 | if (enabled) { |
| 215 | if (!alarm_enabled) { |
| 216 | enable_irq(aie_irq); |
| 217 | alarm_enabled = 1; |
| 218 | } |
| 219 | } else { |
| 220 | if (alarm_enabled) { |
| 221 | disable_irq(aie_irq); |
| 222 | alarm_enabled = 0; |
| 223 | } |
| 224 | } |
| 225 | spin_unlock_irq(&rtc_lock); |
| 226 | return 0; |
| 227 | } |
| 228 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 229 | static irqreturn_t elapsedtime_interrupt(int irq, void *dev_id) |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 230 | { |
| 231 | struct platform_device *pdev = (struct platform_device *)dev_id; |
| 232 | struct rtc_device *rtc = platform_get_drvdata(pdev); |
| 233 | |
| 234 | rtc2_write(RTCINTREG, ELAPSEDTIME_INT); |
| 235 | |
David Brownell | ab6a2d7 | 2007-05-08 00:33:30 -0700 | [diff] [blame] | 236 | rtc_update_irq(rtc, 1, RTC_AF); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 237 | |
| 238 | return IRQ_HANDLED; |
| 239 | } |
| 240 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 241 | static irqreturn_t rtclong1_interrupt(int irq, void *dev_id) |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 242 | { |
| 243 | struct platform_device *pdev = (struct platform_device *)dev_id; |
| 244 | struct rtc_device *rtc = platform_get_drvdata(pdev); |
| 245 | unsigned long count = periodic_count; |
| 246 | |
| 247 | rtc2_write(RTCINTREG, RTCLONG1_INT); |
| 248 | |
| 249 | rtc1_write(RTCL1LREG, count); |
| 250 | rtc1_write(RTCL1HREG, count >> 16); |
| 251 | |
David Brownell | ab6a2d7 | 2007-05-08 00:33:30 -0700 | [diff] [blame] | 252 | rtc_update_irq(rtc, 1, RTC_PF); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 253 | |
| 254 | return IRQ_HANDLED; |
| 255 | } |
| 256 | |
David Brownell | ff8371a | 2006-09-30 23:28:17 -0700 | [diff] [blame] | 257 | static const struct rtc_class_ops vr41xx_rtc_ops = { |
Geert Uytterhoeven | a25f4a9 | 2016-03-01 09:50:01 +0100 | [diff] [blame] | 258 | .ioctl = vr41xx_rtc_ioctl, |
| 259 | .read_time = vr41xx_rtc_read_time, |
| 260 | .set_time = vr41xx_rtc_set_time, |
| 261 | .read_alarm = vr41xx_rtc_read_alarm, |
| 262 | .set_alarm = vr41xx_rtc_set_alarm, |
| 263 | .alarm_irq_enable = vr41xx_rtc_alarm_irq_enable, |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 264 | }; |
| 265 | |
Greg Kroah-Hartman | 5a167f4 | 2012-12-21 13:09:38 -0800 | [diff] [blame] | 266 | static int rtc_probe(struct platform_device *pdev) |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 267 | { |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 268 | struct resource *res; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 269 | struct rtc_device *rtc; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 270 | int retval; |
| 271 | |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 272 | if (pdev->num_resources != 4) |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 273 | return -EBUSY; |
| 274 | |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 275 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 276 | if (!res) |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 277 | return -EBUSY; |
| 278 | |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 279 | rtc1_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 280 | if (!rtc1_base) |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 281 | return -EBUSY; |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 282 | |
| 283 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 284 | if (!res) { |
| 285 | retval = -EBUSY; |
| 286 | goto err_rtc1_iounmap; |
| 287 | } |
| 288 | |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 289 | rtc2_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 290 | if (!rtc2_base) { |
| 291 | retval = -EBUSY; |
| 292 | goto err_rtc1_iounmap; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 293 | } |
| 294 | |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 295 | rtc = devm_rtc_device_register(&pdev->dev, rtc_name, &vr41xx_rtc_ops, |
| 296 | THIS_MODULE); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 297 | if (IS_ERR(rtc)) { |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 298 | retval = PTR_ERR(rtc); |
| 299 | goto err_iounmap_all; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 300 | } |
| 301 | |
Yoichi Yuasa | 4cad443 | 2008-07-23 21:30:48 -0700 | [diff] [blame] | 302 | rtc->max_user_freq = MAX_PERIODIC_RATE; |
| 303 | |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 304 | spin_lock_irq(&rtc_lock); |
| 305 | |
| 306 | rtc1_write(ECMPLREG, 0); |
| 307 | rtc1_write(ECMPMREG, 0); |
| 308 | rtc1_write(ECMPHREG, 0); |
| 309 | rtc1_write(RTCL1LREG, 0); |
| 310 | rtc1_write(RTCL1HREG, 0); |
| 311 | |
| 312 | spin_unlock_irq(&rtc_lock); |
| 313 | |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 314 | aie_irq = platform_get_irq(pdev, 0); |
Anton Vorontsov | 2fac667 | 2009-01-06 14:42:11 -0800 | [diff] [blame] | 315 | if (aie_irq <= 0) { |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 316 | retval = -EBUSY; |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 317 | goto err_iounmap_all; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 318 | } |
| 319 | |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 320 | retval = devm_request_irq(&pdev->dev, aie_irq, elapsedtime_interrupt, 0, |
| 321 | "elapsed_time", pdev); |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 322 | if (retval < 0) |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 323 | goto err_iounmap_all; |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 324 | |
| 325 | pie_irq = platform_get_irq(pdev, 1); |
Wei Yongjun | 812f147 | 2013-07-03 15:07:04 -0700 | [diff] [blame] | 326 | if (pie_irq <= 0) { |
| 327 | retval = -EBUSY; |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 328 | goto err_iounmap_all; |
Wei Yongjun | 812f147 | 2013-07-03 15:07:04 -0700 | [diff] [blame] | 329 | } |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 330 | |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 331 | retval = devm_request_irq(&pdev->dev, pie_irq, rtclong1_interrupt, 0, |
| 332 | "rtclong1", pdev); |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 333 | if (retval < 0) |
Jingoo Han | bf6ce1a | 2014-01-23 15:55:07 -0800 | [diff] [blame] | 334 | goto err_iounmap_all; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 335 | |
| 336 | platform_set_drvdata(pdev, rtc); |
| 337 | |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 338 | disable_irq(aie_irq); |
| 339 | disable_irq(pie_irq); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 340 | |
Jingoo Han | d75dcd3 | 2013-02-21 16:45:30 -0800 | [diff] [blame] | 341 | dev_info(&pdev->dev, "Real Time Clock of NEC VR4100 series\n"); |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 342 | |
| 343 | return 0; |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 344 | |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 345 | err_iounmap_all: |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 346 | rtc2_base = NULL; |
| 347 | |
| 348 | err_rtc1_iounmap: |
Yoichi Yuasa | bd076509 | 2007-05-11 21:18:48 +0900 | [diff] [blame] | 349 | rtc1_base = NULL; |
| 350 | |
| 351 | return retval; |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Kay Sievers | ad28a07 | 2008-04-10 21:29:25 -0700 | [diff] [blame] | 354 | /* work with hotplug and coldplug */ |
| 355 | MODULE_ALIAS("platform:RTC"); |
| 356 | |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 357 | static struct platform_driver rtc_platform_driver = { |
| 358 | .probe = rtc_probe, |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 359 | .driver = { |
| 360 | .name = rtc_name, |
Yoichi Yuasa | 8417eb7 | 2006-04-10 22:54:47 -0700 | [diff] [blame] | 361 | }, |
| 362 | }; |
| 363 | |
Axel Lin | 0c4eae6 | 2012-01-10 15:10:48 -0800 | [diff] [blame] | 364 | module_platform_driver(rtc_platform_driver); |