1 // SPDX-License-Identifier: GPL-2.0-or-later
18 #include <linux/soc/ixp4xx/cpu.h>
46 	lo = __raw_readl(&regs->systime_lo);  in ixp_systime_read()
47 	hi = __raw_readl(&regs->systime_hi);  in ixp_systime_read()
64 	__raw_writel(lo, &regs->systime_lo);  in ixp_systime_write()
65 	__raw_writel(hi, &regs->systime_hi);  in ixp_systime_write()
75 	struct ixp46x_ts_regs *regs = ixp_clock->regs;  in isr()
79 	val = __raw_readl(&regs->event);  in isr()
83 		if (ixp_clock->exts0_enabled) {  in isr()
84 			hi = __raw_readl(&regs->asms_hi);  in isr()
85 			lo = __raw_readl(&regs->asms_lo);  in isr()
91 			ptp_clock_event(ixp_clock->ptp_clock, &event);  in isr()
97 		if (ixp_clock->exts1_enabled) {  in isr()
98 			hi = __raw_readl(&regs->amms_hi);  in isr()
99 			lo = __raw_readl(&regs->amms_lo);  in isr()
105 			ptp_clock_event(ixp_clock->ptp_clock, &event);  in isr()
113 		__raw_writel(ack, &regs->event);  in isr()
129 	struct ixp46x_ts_regs *regs = ixp_clock->regs;  in ptp_ixp_adjfreq()
133 		ppb = -ppb;  in ptp_ixp_adjfreq()
140 	addend = neg_adj ? addend - diff : addend + diff;  in ptp_ixp_adjfreq()
142 	__raw_writel(addend, &regs->addend);  in ptp_ixp_adjfreq()
152 	struct ixp46x_ts_regs *regs = ixp_clock->regs;  in ptp_ixp_adjtime()
170 	struct ixp46x_ts_regs *regs = ixp_clock->regs;  in ptp_ixp_gettime()
188 	struct ixp46x_ts_regs *regs = ixp_clock->regs;  in ptp_ixp_settime()
206 	switch (rq->type) {  in ptp_ixp_enable()
208 		switch (rq->extts.index) {  in ptp_ixp_enable()
210 			ixp_clock->exts0_enabled = on ? 1 : 0;  in ptp_ixp_enable()
213 			ixp_clock->exts1_enabled = on ? 1 : 0;  in ptp_ixp_enable()
216 			return -EINVAL;  in ptp_ixp_enable()
223 	return -EOPNOTSUPP;  in ptp_ixp_enable()
228 	.name		= "IXP46X timer",
250 		return -EPROBE_DEFER;  in ixp46x_ptp_find()
267 	struct device *dev = &pdev->dev;  in ptp_ixp_probe()
275 		return -ENXIO;  in ptp_ixp_probe()
291 	__raw_writel(DEFAULT_ADDEND, &ixp_clock.regs->addend);  in ptp_ixp_probe()
292 	__raw_writel(1, &ixp_clock.regs->trgt_lo);  in ptp_ixp_probe()
293 	__raw_writel(0, &ixp_clock.regs->trgt_hi);  in ptp_ixp_probe()
294 	__raw_writel(TTIPEND, &ixp_clock.regs->event);  in ptp_ixp_probe()
315 		.compatible = "intel,ixp46x-ptp-timer",
322 		.name = "ptp-ixp46x",
331 MODULE_DESCRIPTION("PTP clock using the IXP46X timer");