ptp_qoriq: add little enadian support
There is QorIQ 1588 timer IP block on the new ENETC Ethernet controller. However it uses little endian mode which is different with before. This patch is to add little endian support for the driver by using "little-endian" dts node property. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -43,8 +43,8 @@ static u64 tmr_cnt_read(struct ptp_qoriq *ptp_qoriq)
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u64 ns;
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u32 lo, hi;
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lo = qoriq_read(®s->ctrl_regs->tmr_cnt_l);
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hi = qoriq_read(®s->ctrl_regs->tmr_cnt_h);
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lo = ptp_qoriq->read(®s->ctrl_regs->tmr_cnt_l);
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hi = ptp_qoriq->read(®s->ctrl_regs->tmr_cnt_h);
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ns = ((u64) hi) << 32;
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ns |= lo;
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return ns;
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@ -57,8 +57,8 @@ static void tmr_cnt_write(struct ptp_qoriq *ptp_qoriq, u64 ns)
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u32 hi = ns >> 32;
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u32 lo = ns & 0xffffffff;
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qoriq_write(®s->ctrl_regs->tmr_cnt_l, lo);
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qoriq_write(®s->ctrl_regs->tmr_cnt_h, hi);
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ptp_qoriq->write(®s->ctrl_regs->tmr_cnt_l, lo);
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ptp_qoriq->write(®s->ctrl_regs->tmr_cnt_h, hi);
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}
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/* Caller must hold ptp_qoriq->lock. */
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@ -73,8 +73,8 @@ static void set_alarm(struct ptp_qoriq *ptp_qoriq)
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ns -= ptp_qoriq->tclk_period;
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hi = ns >> 32;
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lo = ns & 0xffffffff;
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qoriq_write(®s->alarm_regs->tmr_alarm1_l, lo);
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qoriq_write(®s->alarm_regs->tmr_alarm1_h, hi);
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ptp_qoriq->write(®s->alarm_regs->tmr_alarm1_l, lo);
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ptp_qoriq->write(®s->alarm_regs->tmr_alarm1_h, hi);
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}
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/* Caller must hold ptp_qoriq->lock. */
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@ -83,8 +83,8 @@ static void set_fipers(struct ptp_qoriq *ptp_qoriq)
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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set_alarm(ptp_qoriq);
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qoriq_write(®s->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
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qoriq_write(®s->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
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ptp_qoriq->write(®s->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
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ptp_qoriq->write(®s->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
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}
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static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
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@ -115,8 +115,8 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
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event.index = index;
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do {
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lo = qoriq_read(reg_etts_l);
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hi = qoriq_read(reg_etts_h);
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lo = ptp_qoriq->read(reg_etts_l);
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hi = ptp_qoriq->read(reg_etts_h);
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if (update_event) {
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event.timestamp = ((u64) hi) << 32;
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@ -124,7 +124,7 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
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ptp_clock_event(ptp_qoriq->clock, &event);
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}
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stat = qoriq_read(®s->ctrl_regs->tmr_stat);
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stat = ptp_qoriq->read(®s->ctrl_regs->tmr_stat);
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} while (ptp_qoriq->extts_fifo_support && (stat & valid));
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return 0;
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@ -144,8 +144,8 @@ irqreturn_t ptp_qoriq_isr(int irq, void *priv)
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spin_lock(&ptp_qoriq->lock);
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val = qoriq_read(®s->ctrl_regs->tmr_tevent);
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mask = qoriq_read(®s->ctrl_regs->tmr_temask);
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val = ptp_qoriq->read(®s->ctrl_regs->tmr_tevent);
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mask = ptp_qoriq->read(®s->ctrl_regs->tmr_temask);
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spin_unlock(&ptp_qoriq->lock);
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@ -173,14 +173,14 @@ irqreturn_t ptp_qoriq_isr(int irq, void *priv)
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ns = ptp_qoriq->alarm_value + ptp_qoriq->alarm_interval;
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hi = ns >> 32;
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lo = ns & 0xffffffff;
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qoriq_write(®s->alarm_regs->tmr_alarm2_l, lo);
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qoriq_write(®s->alarm_regs->tmr_alarm2_h, hi);
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ptp_qoriq->write(®s->alarm_regs->tmr_alarm2_l, lo);
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ptp_qoriq->write(®s->alarm_regs->tmr_alarm2_h, hi);
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ptp_qoriq->alarm_value = ns;
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} else {
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spin_lock(&ptp_qoriq->lock);
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mask = qoriq_read(®s->ctrl_regs->tmr_temask);
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mask = ptp_qoriq->read(®s->ctrl_regs->tmr_temask);
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mask &= ~ALM2EN;
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qoriq_write(®s->ctrl_regs->tmr_temask, mask);
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ptp_qoriq->write(®s->ctrl_regs->tmr_temask, mask);
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spin_unlock(&ptp_qoriq->lock);
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ptp_qoriq->alarm_value = 0;
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ptp_qoriq->alarm_interval = 0;
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@ -194,7 +194,7 @@ irqreturn_t ptp_qoriq_isr(int irq, void *priv)
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}
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if (ack) {
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qoriq_write(®s->ctrl_regs->tmr_tevent, ack);
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ptp_qoriq->write(®s->ctrl_regs->tmr_tevent, ack);
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return IRQ_HANDLED;
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} else
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return IRQ_NONE;
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@ -229,7 +229,7 @@ int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
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tmr_add = neg_adj ? tmr_add - diff : tmr_add + diff;
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qoriq_write(®s->ctrl_regs->tmr_add, tmr_add);
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ptp_qoriq->write(®s->ctrl_regs->tmr_add, tmr_add);
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return 0;
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}
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@ -326,15 +326,15 @@ int ptp_qoriq_enable(struct ptp_clock_info *ptp,
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spin_lock_irqsave(&ptp_qoriq->lock, flags);
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mask = qoriq_read(®s->ctrl_regs->tmr_temask);
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mask = ptp_qoriq->read(®s->ctrl_regs->tmr_temask);
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if (on) {
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mask |= bit;
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qoriq_write(®s->ctrl_regs->tmr_tevent, bit);
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ptp_qoriq->write(®s->ctrl_regs->tmr_tevent, bit);
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} else {
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mask &= ~bit;
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}
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qoriq_write(®s->ctrl_regs->tmr_temask, mask);
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ptp_qoriq->write(®s->ctrl_regs->tmr_temask, mask);
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spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
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return 0;
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@ -496,6 +496,14 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
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return -ENODEV;
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}
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if (of_property_read_bool(node, "little-endian")) {
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ptp_qoriq->read = qoriq_read_le;
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ptp_qoriq->write = qoriq_write_le;
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} else {
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ptp_qoriq->read = qoriq_read_be;
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ptp_qoriq->write = qoriq_write_be;
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}
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if (of_device_is_compatible(node, "fsl,fman-ptp-timer")) {
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ptp_qoriq->regs.ctrl_regs = base + FMAN_CTRL_REGS_OFFSET;
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ptp_qoriq->regs.alarm_regs = base + FMAN_ALARM_REGS_OFFSET;
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@ -519,13 +527,14 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
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spin_lock_irqsave(&ptp_qoriq->lock, flags);
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regs = &ptp_qoriq->regs;
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qoriq_write(®s->ctrl_regs->tmr_ctrl, tmr_ctrl);
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qoriq_write(®s->ctrl_regs->tmr_add, ptp_qoriq->tmr_add);
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qoriq_write(®s->ctrl_regs->tmr_prsc, ptp_qoriq->tmr_prsc);
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qoriq_write(®s->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
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qoriq_write(®s->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
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ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, tmr_ctrl);
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ptp_qoriq->write(®s->ctrl_regs->tmr_add, ptp_qoriq->tmr_add);
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ptp_qoriq->write(®s->ctrl_regs->tmr_prsc, ptp_qoriq->tmr_prsc);
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ptp_qoriq->write(®s->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
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ptp_qoriq->write(®s->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
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set_alarm(ptp_qoriq);
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qoriq_write(®s->ctrl_regs->tmr_ctrl, tmr_ctrl|FIPERST|RTPE|TE|FRD);
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ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl,
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tmr_ctrl|FIPERST|RTPE|TE|FRD);
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spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
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@ -543,8 +552,8 @@ void ptp_qoriq_free(struct ptp_qoriq *ptp_qoriq)
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{
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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qoriq_write(®s->ctrl_regs->tmr_temask, 0);
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qoriq_write(®s->ctrl_regs->tmr_ctrl, 0);
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ptp_qoriq->write(®s->ctrl_regs->tmr_temask, 0);
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ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, 0);
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ptp_qoriq_remove_debugfs(ptp_qoriq);
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ptp_clock_unregister(ptp_qoriq->clock);
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@ -11,7 +11,7 @@ static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
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*val = ctrl & PP1L ? 1 : 0;
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return 0;
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@ -23,13 +23,13 @@ static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
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if (val == 0)
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ctrl &= ~PP1L;
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else
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ctrl |= PP1L;
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qoriq_write(®s->ctrl_regs->tmr_ctrl, ctrl);
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ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, ctrl);
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return 0;
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}
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@ -42,7 +42,7 @@ static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
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*val = ctrl & PP2L ? 1 : 0;
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return 0;
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@ -54,13 +54,13 @@ static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
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struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
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u32 ctrl;
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ctrl = qoriq_read(®s->ctrl_regs->tmr_ctrl);
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ctrl = ptp_qoriq->read(®s->ctrl_regs->tmr_ctrl);
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if (val == 0)
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ctrl &= ~PP2L;
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else
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ctrl |= PP2L;
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qoriq_write(®s->ctrl_regs->tmr_ctrl, ctrl);
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ptp_qoriq->write(®s->ctrl_regs->tmr_ctrl, ctrl);
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return 0;
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}
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@ -157,21 +157,30 @@ struct ptp_qoriq {
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u32 cksel;
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u32 tmr_fiper1;
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u32 tmr_fiper2;
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u32 (*read)(unsigned __iomem *addr);
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void (*write)(unsigned __iomem *addr, u32 val);
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};
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static inline u32 qoriq_read(unsigned __iomem *addr)
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static inline u32 qoriq_read_be(unsigned __iomem *addr)
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{
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u32 val;
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val = ioread32be(addr);
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return val;
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return ioread32be(addr);
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}
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static inline void qoriq_write(unsigned __iomem *addr, u32 val)
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static inline void qoriq_write_be(unsigned __iomem *addr, u32 val)
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{
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iowrite32be(val, addr);
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}
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static inline u32 qoriq_read_le(unsigned __iomem *addr)
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{
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return ioread32(addr);
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}
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static inline void qoriq_write_le(unsigned __iomem *addr, u32 val)
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{
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iowrite32(val, addr);
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}
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irqreturn_t ptp_qoriq_isr(int irq, void *priv);
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int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
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const struct ptp_clock_info caps);
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