Hi,
This series adds delay timer support for Microchip PIT64B driver.
Thank you,
Claudiu Beznea
Changed in v2:
- rebase on top of [1] and as a consequence get rid of patch 1/1 from v1
[1] https://lore.kernel.org/all/[email protected]/
Claudiu Beznea (2):
clocksource/drivers/timer-microchip-pit64b: select driver only on ARM
clocksource/drivers/timer-microchip-pit64b: add delay timer
drivers/clocksource/Kconfig | 2 +-
drivers/clocksource/timer-microchip-pit64b.c | 12 ++++++++++++
2 files changed, 13 insertions(+), 1 deletion(-)
--
2.34.1
Microchip PIT64B is currently available on ARM based devices. Thus
select it only for ARM. This allows implementing delay timer.
Signed-off-by: Claudiu Beznea <[email protected]>
---
drivers/clocksource/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 778dad0c06a9..5fc8f0e7fb38 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -706,7 +706,7 @@ config INGENIC_OST
config MICROCHIP_PIT64B
bool "Microchip PIT64B support"
- depends on OF
+ depends on OF && ARM
select TIMER_OF
help
This option enables Microchip PIT64B timer for Atmel
--
2.34.1
Add delay timer.
Signed-off-by: Claudiu Beznea <[email protected]>
---
drivers/clocksource/timer-microchip-pit64b.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/clocksource/timer-microchip-pit64b.c b/drivers/clocksource/timer-microchip-pit64b.c
index d5f1436f33d9..57209bb38c70 100644
--- a/drivers/clocksource/timer-microchip-pit64b.c
+++ b/drivers/clocksource/timer-microchip-pit64b.c
@@ -9,6 +9,7 @@
#include <linux/clk.h>
#include <linux/clockchips.h>
+#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -92,6 +93,8 @@ struct mchp_pit64b_clksrc {
static void __iomem *mchp_pit64b_cs_base;
/* Default cycles for clockevent timer. */
static u64 mchp_pit64b_ce_cycles;
+/* Delay timer. */
+static struct delay_timer mchp_pit64b_dt;
static inline u64 mchp_pit64b_cnt_read(void __iomem *base)
{
@@ -169,6 +172,11 @@ static u64 notrace mchp_pit64b_sched_read_clk(void)
return mchp_pit64b_cnt_read(mchp_pit64b_cs_base);
}
+static unsigned long notrace mchp_pit64b_dt_read(void)
+{
+ return mchp_pit64b_cnt_read(mchp_pit64b_cs_base);
+}
+
static int mchp_pit64b_clkevt_shutdown(struct clock_event_device *cedev)
{
struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev);
@@ -376,6 +384,10 @@ static int __init mchp_pit64b_init_clksrc(struct mchp_pit64b_timer *timer,
sched_clock_register(mchp_pit64b_sched_read_clk, 64, clk_rate);
+ mchp_pit64b_dt.read_current_timer = mchp_pit64b_dt_read;
+ mchp_pit64b_dt.freq = clk_rate;
+ register_current_timer_delay(&mchp_pit64b_dt);
+
return 0;
}
--
2.34.1
On 03/02/2023 14:05, Claudiu Beznea wrote:
> Hi,
>
> This series adds delay timer support for Microchip PIT64B driver.
>
> Thank you,
> Claudiu Beznea
>
> Changed in v2:
> - rebase on top of [1] and as a consequence get rid of patch 1/1 from v1
Applied, thanks
--
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The following commit has been merged into the timers/core branch of tip:
Commit-ID: f3af3dc7cc351bd22742eac992c72c76749ce8c3
Gitweb: https://git.kernel.org/tip/f3af3dc7cc351bd22742eac992c72c76749ce8c3
Author: Claudiu Beznea <[email protected]>
AuthorDate: Fri, 03 Feb 2023 15:05:37 +02:00
Committer: Daniel Lezcano <[email protected]>
CommitterDate: Mon, 13 Feb 2023 13:10:17 +01:00
clocksource/drivers/timer-microchip-pit64b: Add delay timer
Add delay timer.
Signed-off-by: Claudiu Beznea <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/clocksource/timer-microchip-pit64b.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/clocksource/timer-microchip-pit64b.c b/drivers/clocksource/timer-microchip-pit64b.c
index d5f1436..57209bb 100644
--- a/drivers/clocksource/timer-microchip-pit64b.c
+++ b/drivers/clocksource/timer-microchip-pit64b.c
@@ -9,6 +9,7 @@
#include <linux/clk.h>
#include <linux/clockchips.h>
+#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -92,6 +93,8 @@ struct mchp_pit64b_clksrc {
static void __iomem *mchp_pit64b_cs_base;
/* Default cycles for clockevent timer. */
static u64 mchp_pit64b_ce_cycles;
+/* Delay timer. */
+static struct delay_timer mchp_pit64b_dt;
static inline u64 mchp_pit64b_cnt_read(void __iomem *base)
{
@@ -169,6 +172,11 @@ static u64 notrace mchp_pit64b_sched_read_clk(void)
return mchp_pit64b_cnt_read(mchp_pit64b_cs_base);
}
+static unsigned long notrace mchp_pit64b_dt_read(void)
+{
+ return mchp_pit64b_cnt_read(mchp_pit64b_cs_base);
+}
+
static int mchp_pit64b_clkevt_shutdown(struct clock_event_device *cedev)
{
struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev);
@@ -376,6 +384,10 @@ static int __init mchp_pit64b_init_clksrc(struct mchp_pit64b_timer *timer,
sched_clock_register(mchp_pit64b_sched_read_clk, 64, clk_rate);
+ mchp_pit64b_dt.read_current_timer = mchp_pit64b_dt_read;
+ mchp_pit64b_dt.freq = clk_rate;
+ register_current_timer_delay(&mchp_pit64b_dt);
+
return 0;
}
The following commit has been merged into the timers/core branch of tip:
Commit-ID: d19c8b2ed176c6aaf3dfefd149c740f73ce4875e
Gitweb: https://git.kernel.org/tip/d19c8b2ed176c6aaf3dfefd149c740f73ce4875e
Author: Claudiu Beznea <[email protected]>
AuthorDate: Fri, 03 Feb 2023 15:05:36 +02:00
Committer: Daniel Lezcano <[email protected]>
CommitterDate: Mon, 13 Feb 2023 13:10:17 +01:00
clocksource/drivers/timer-microchip-pit64b: Select driver only on ARM
Microchip PIT64B is currently available on ARM based devices. Thus
select it only for ARM. This allows implementing delay timer.
Signed-off-by: Claudiu Beznea <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>
---
drivers/clocksource/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 45085ab..ac22c1a 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -706,7 +706,7 @@ config INGENIC_OST
config MICROCHIP_PIT64B
bool "Microchip PIT64B support"
- depends on OF
+ depends on OF && ARM
select TIMER_OF
help
This option enables Microchip PIT64B timer for Atmel