From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-arm@nongnu.org, qemu-devel@nongnu.org
Cc: "Damien Hedde" <damien.hedde@greensocs.com>,
"Luc Michel" <luc@lmichel.fr>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: [PATCH 19/25] hw/timer/cmsdk-apb-dualtimer: Convert to use Clock input
Date: Thu, 21 Jan 2021 19:06:16 +0000 [thread overview]
Message-ID: <20210121190622.22000-20-peter.maydell@linaro.org> (raw)
In-Reply-To: <20210121190622.22000-1-peter.maydell@linaro.org>
Switch the CMSDK APB dualtimer device over to using its Clock input;
the pclk-frq property is now ignored.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/timer/cmsdk-apb-dualtimer.c | 42 ++++++++++++++++++++++++++++++----
1 file changed, 37 insertions(+), 5 deletions(-)
diff --git a/hw/timer/cmsdk-apb-dualtimer.c b/hw/timer/cmsdk-apb-dualtimer.c
index 781b496037b..828127b366f 100644
--- a/hw/timer/cmsdk-apb-dualtimer.c
+++ b/hw/timer/cmsdk-apb-dualtimer.c
@@ -106,6 +106,22 @@ static void cmsdk_apb_dualtimer_update(CMSDKAPBDualTimer *s)
qemu_set_irq(s->timerintc, timintc);
}
+static int cmsdk_dualtimermod_divisor(CMSDKAPBDualTimerModule *m)
+{
+ /* Return the divisor set by the current CONTROL.PRESCALE value */
+ switch (FIELD_EX32(m->control, CONTROL, PRESCALE)) {
+ case 0:
+ return 1;
+ case 1:
+ return 16;
+ case 2:
+ case 3: /* UNDEFINED, we treat like 2 (and complained when it was set) */
+ return 256;
+ default:
+ g_assert_not_reached();
+ }
+}
+
static void cmsdk_dualtimermod_write_control(CMSDKAPBDualTimerModule *m,
uint32_t newctrl)
{
@@ -146,7 +162,7 @@ static void cmsdk_dualtimermod_write_control(CMSDKAPBDualTimerModule *m,
default:
g_assert_not_reached();
}
- ptimer_set_freq(m->timer, m->parent->pclk_frq / divisor);
+ ptimer_set_period_from_clock(m->timer, m->parent->timclk, divisor);
}
if (changed & R_CONTROL_MODE_MASK) {
@@ -414,7 +430,8 @@ static void cmsdk_dualtimermod_reset(CMSDKAPBDualTimerModule *m)
* limit must both be set to 0xffff, so we wrap at 16 bits.
*/
ptimer_set_limit(m->timer, 0xffff, 1);
- ptimer_set_freq(m->timer, m->parent->pclk_frq);
+ ptimer_set_period_from_clock(m->timer, m->parent->timclk,
+ cmsdk_dualtimermod_divisor(m));
ptimer_transaction_commit(m->timer);
}
@@ -432,6 +449,20 @@ static void cmsdk_apb_dualtimer_reset(DeviceState *dev)
s->timeritop = 0;
}
+static void cmsdk_apb_dualtimer_clk_update(void *opaque)
+{
+ CMSDKAPBDualTimer *s = CMSDK_APB_DUALTIMER(opaque);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s->timermod); i++) {
+ CMSDKAPBDualTimerModule *m = &s->timermod[i];
+ ptimer_transaction_begin(m->timer);
+ ptimer_set_period_from_clock(m->timer, m->parent->timclk,
+ cmsdk_dualtimermod_divisor(m));
+ ptimer_transaction_commit(m->timer);
+ }
+}
+
static void cmsdk_apb_dualtimer_init(Object *obj)
{
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
@@ -446,7 +477,8 @@ static void cmsdk_apb_dualtimer_init(Object *obj)
for (i = 0; i < ARRAY_SIZE(s->timermod); i++) {
sysbus_init_irq(sbd, &s->timermod[i].timerint);
}
- s->timclk = qdev_init_clock_in(DEVICE(s), "TIMCLK", NULL, NULL);
+ s->timclk = qdev_init_clock_in(DEVICE(s), "TIMCLK",
+ cmsdk_apb_dualtimer_clk_update, s);
}
static void cmsdk_apb_dualtimer_realize(DeviceState *dev, Error **errp)
@@ -454,8 +486,8 @@ static void cmsdk_apb_dualtimer_realize(DeviceState *dev, Error **errp)
CMSDKAPBDualTimer *s = CMSDK_APB_DUALTIMER(dev);
int i;
- if (s->pclk_frq == 0) {
- error_setg(errp, "CMSDK APB timer: pclk-frq property must be set");
+ if (!clock_has_source(s->timclk)) {
+ error_setg(errp, "CMSDK APB dualtimer: TIMCLK clock must be connected");
return;
}
--
2.20.1
next prev parent reply other threads:[~2021-01-21 19:20 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-21 19:05 [PATCH 00/25] Convert CMSDK timer, watchdog, dualtimer to Clock framework Peter Maydell
2021-01-21 19:05 ` [PATCH 01/25] ptimer: Add new ptimer_set_period_from_clock() function Peter Maydell
2021-01-22 14:08 ` Luc Michel
2021-01-21 19:05 ` [PATCH 02/25] clock: Add new clock_has_source() function Peter Maydell
2021-01-22 14:15 ` Luc Michel
2021-01-27 21:56 ` Philippe Mathieu-Daudé
2021-01-21 19:06 ` [PATCH 03/25] tests: Add a simple test of the CMSDK APB timer Peter Maydell
2021-01-21 19:56 ` Philippe Mathieu-Daudé
2021-01-24 12:50 ` Luc Michel
2021-01-21 19:06 ` [PATCH 04/25] tests: Add a simple test of the CMSDK APB watchdog Peter Maydell
2021-01-24 13:10 ` Luc Michel
2021-01-27 21:54 ` Philippe Mathieu-Daudé
2021-01-21 19:06 ` [PATCH 05/25] tests: Add a simple test of the CMSDK APB dual timer Peter Maydell
2021-01-24 13:24 ` Luc Michel
2021-01-21 19:06 ` [PATCH 06/25] hw/timer/cmsdk-apb-timer: Rename CMSDKAPBTIMER struct to CMSDKAPBTimer Peter Maydell
2021-01-21 20:21 ` Philippe Mathieu-Daudé
2021-01-22 14:22 ` Luc Michel
2021-01-21 19:06 ` [PATCH 07/25] hw/timer/cmsdk-apb-timer: Add Clock input Peter Maydell
2021-01-21 20:22 ` Philippe Mathieu-Daudé
2021-01-22 15:11 ` Luc Michel
2021-01-21 19:06 ` [PATCH 08/25] hw/timer/cmsdk-apb-dualtimer: " Peter Maydell
2021-01-21 21:49 ` Philippe Mathieu-Daudé
2021-01-22 15:17 ` Luc Michel
2021-01-21 19:06 ` [PATCH 09/25] hw/watchdog/cmsdk-apb-watchdog: " Peter Maydell
2021-01-21 20:27 ` Philippe Mathieu-Daudé
2021-01-22 15:18 ` Luc Michel
2021-01-21 19:06 ` [PATCH 10/25] hw/arm/armsse: Rename "MAINCLK" property to "MAINCLK_FRQ" Peter Maydell
2021-01-21 20:28 ` Philippe Mathieu-Daudé
2021-01-22 15:22 ` Luc Michel
2021-01-21 19:06 ` [PATCH 11/25] hw/arm/armsse: Wire up clocks Peter Maydell
2021-01-21 20:30 ` Philippe Mathieu-Daudé
2021-01-22 15:34 ` Luc Michel
2021-01-21 19:06 ` [PATCH 12/25] hw/arm/mps2: Inline CMSDK_APB_TIMER creation Peter Maydell
2021-01-21 22:14 ` Philippe Mathieu-Daudé
2021-01-22 15:33 ` Luc Michel
2021-01-21 19:06 ` [PATCH 13/25] hw/arm/mps2: Create and connect SYSCLK Clock Peter Maydell
2021-01-21 21:24 ` Philippe Mathieu-Daudé
2021-01-22 19:52 ` Luc Michel
2021-01-21 19:06 ` [PATCH 14/25] hw/arm/mps2-tz: Create and connect ARMSSE Clocks Peter Maydell
2021-01-21 21:30 ` Philippe Mathieu-Daudé
2021-01-22 19:52 ` Luc Michel
2021-01-21 19:06 ` [PATCH 15/25] hw/arm/musca: " Peter Maydell
2021-01-21 21:30 ` Philippe Mathieu-Daudé
2021-01-22 20:01 ` Luc Michel
2021-01-21 19:06 ` [PATCH 16/25] hw/arm/stellaris: Convert SSYS to QOM device Peter Maydell
2021-01-21 22:13 ` Philippe Mathieu-Daudé
2021-01-25 11:48 ` Peter Maydell
2021-01-27 22:10 ` Philippe Mathieu-Daudé
2021-01-22 20:26 ` Luc Michel
2021-01-21 19:06 ` [PATCH 17/25] hw/arm/stellaris: Create Clock input for watchdog Peter Maydell
2021-01-21 21:59 ` Philippe Mathieu-Daudé
2021-01-27 22:16 ` Philippe Mathieu-Daudé
2021-01-22 20:30 ` Luc Michel
2021-01-21 19:06 ` [PATCH 18/25] hw/timer/cmsdk-apb-timer: Convert to use Clock input Peter Maydell
2021-01-21 22:01 ` Philippe Mathieu-Daudé
2021-01-22 20:33 ` Luc Michel
2021-01-21 19:06 ` Peter Maydell [this message]
2021-01-22 20:49 ` [PATCH 19/25] hw/timer/cmsdk-apb-dualtimer: " Luc Michel
2021-01-22 21:41 ` Peter Maydell
2021-01-23 19:58 ` Luc Michel
2021-01-27 22:00 ` Philippe Mathieu-Daudé
2021-01-21 19:06 ` [PATCH 20/25] hw/watchdog/cmsdk-apb-watchdog: " Peter Maydell
2021-01-21 22:01 ` Philippe Mathieu-Daudé
2021-01-22 20:51 ` Luc Michel
2021-01-21 19:06 ` [PATCH 21/25] tests/qtest/cmsdk-apb-watchdog-test: Test clock changes Peter Maydell
2021-01-21 22:04 ` Philippe Mathieu-Daudé
2021-01-24 13:35 ` Luc Michel
2021-01-21 19:06 ` [PATCH 22/25] hw/arm/armsse: Use Clock to set system_clock_scale Peter Maydell
2021-01-21 22:05 ` Philippe Mathieu-Daudé
2021-01-23 20:31 ` Luc Michel
2021-01-23 22:33 ` Peter Maydell
2021-01-21 19:06 ` [PATCH 23/25] arm: Don't set freq properties on CMSDK timer, dualtimer, watchdog, ARMSSE Peter Maydell
2021-01-21 22:06 ` Philippe Mathieu-Daudé
2021-01-23 20:32 ` Luc Michel
2021-01-21 19:06 ` [PATCH 24/25] arm: Remove frq " Peter Maydell
2021-01-21 22:09 ` Philippe Mathieu-Daudé
2021-01-23 20:33 ` Luc Michel
2021-01-21 19:06 ` [PATCH 25/25] hw/arm/stellaris: Remove board-creation reset of STELLARIS_SYS Peter Maydell
2021-01-23 20:33 ` Luc Michel
2021-01-27 22:10 ` Philippe Mathieu-Daudé
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