2  * HP i8042 SDC + MSM-58321 BBRTC driver.
31  *      for Part Number 1820-4784 Revision B.  Dwg No. A-1820-4784-2
51 MODULE_DESCRIPTION("HP i8042 SDC + MSM-58321 RTC Driver");
90 	if (hp_sdc_enqueue_transaction(&t)) return -1;  in hp_sdc_rtc_do_read_bbrtc()
94 		return -1;  in hp_sdc_rtc_do_read_bbrtc()
100 		return -1;  in hp_sdc_rtc_do_read_bbrtc()
103 	rtctm->tm_year = (tseq[83] & 0x0f) + (tseq[90] & 0x0f) * 10;  in hp_sdc_rtc_do_read_bbrtc()
104 	rtctm->tm_mon  = (tseq[69] & 0x0f) + (tseq[76] & 0x0f) * 10;  in hp_sdc_rtc_do_read_bbrtc()
105 	rtctm->tm_mday = (tseq[55] & 0x0f) + (tseq[62] & 0x0f) * 10;  in hp_sdc_rtc_do_read_bbrtc()
106 	rtctm->tm_wday = (tseq[48] & 0x0f);  in hp_sdc_rtc_do_read_bbrtc()
107 	rtctm->tm_hour = (tseq[34] & 0x0f) + (tseq[41] & 0x0f) * 10;  in hp_sdc_rtc_do_read_bbrtc()
108 	rtctm->tm_min  = (tseq[20] & 0x0f) + (tseq[27] & 0x0f) * 10;  in hp_sdc_rtc_do_read_bbrtc()
109 	rtctm->tm_sec  = (tseq[6]  & 0x0f) + (tseq[13] & 0x0f) * 10;  in hp_sdc_rtc_do_read_bbrtc()
119 	/* MSM-58321 has no read latch, so must read twice and compare. */  in hp_sdc_rtc_read_bbrtc()
121 	if (hp_sdc_rtc_do_read_bbrtc(&tm_last)) return -1;  in hp_sdc_rtc_read_bbrtc()
122 	if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;  in hp_sdc_rtc_read_bbrtc()
125 		if (i++ > 4) return -1;  in hp_sdc_rtc_read_bbrtc()
127 		if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;  in hp_sdc_rtc_read_bbrtc()
156 	tseq[t.endidx - 4] |= HP_SDC_ACT_SEMAPHORE; /* numreg assumed > 1 */  in hp_sdc_rtc_read_i8042timer()
163 		return -1;  in hp_sdc_rtc_read_i8042timer()
167 		return -1;  in hp_sdc_rtc_read_i8042timer()
172 		return -1;  in hp_sdc_rtc_read_i8042timer()
182 /* Read the i8042 real-time clock */
189 	if (raw < 0) return -1;  in hp_sdc_rtc_read_rt()
194 	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;  in hp_sdc_rtc_read_rt()
195 	res->tv_sec =  (tenms / 100) + (time64_t)days * 86400;  in hp_sdc_rtc_read_rt()
201 /* Read the i8042 fast handshake timer */
207 	if (raw < 0) return -1;  in hp_sdc_rtc_read_fhs()
211 	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;  in hp_sdc_rtc_read_fhs()
212 	res->tv_sec  = (time64_t)(tenms / 100);  in hp_sdc_rtc_read_fhs()
218 /* Read the i8042 match timer (a.k.a. alarm) */
224 	if (raw < 0) return -1;  in hp_sdc_rtc_read_mt()
228 	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;  in hp_sdc_rtc_read_mt()
229 	res->tv_sec  = (time64_t)(tenms / 100);  in hp_sdc_rtc_read_mt()
235 /* Read the i8042 delay timer */
241 	if (raw < 0) return -1;  in hp_sdc_rtc_read_dt()
245 	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;  in hp_sdc_rtc_read_dt()
246 	res->tv_sec  = (time64_t)(tenms / 100);  in hp_sdc_rtc_read_dt()
252 /* Read the i8042 cycle timer (a.k.a. periodic) */
258 	if (raw < 0) return -1;  in hp_sdc_rtc_read_ct()
262 	res->tv_nsec = (long)(tenms % 100) * 10000 * 1000;  in hp_sdc_rtc_read_ct()
263 	res->tv_sec  = (time64_t)(tenms / 100);  in hp_sdc_rtc_read_ct()
353 		return -ENODEV;  in hp_sdc_rtc_init()
363 	printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support loaded "  in hp_sdc_rtc_init()
373         printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support unloaded\n");  in hp_sdc_rtc_exit()