linux-kernel - [PATCH v2 10/12] ARM: davinci: dm644x: switch to using the clocksource driver

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Date:   Mon,  4 Feb 2019 18:17:55 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH v2 10/12] ARM: davinci: dm644x: switch to using the clocksource driver

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

We now have a proper clocksource driver for davinci. Switch the platform
to using it.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 arch/arm/mach-davinci/dm644x.c | 36 ++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 13 deletions(-)

diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 070660cfd93a..b80346954977 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -26,7 +26,8 @@
 #include <mach/irqs.h>
 #include <mach/mux.h>
 #include <mach/serial.h>
-#include <mach/time.h>
+
+#include <clocksource/timer-davinci.h>
 
 #include "asp.h"
 #include "davinci.h"
@@ -558,16 +559,24 @@ static struct davinci_id dm644x_ids[] = {
 	},
 };
 
-/*
- * T0_BOT: Timer 0, bottom:  clockevent source for hrtimers
- * T0_TOP: Timer 0, top   :  clocksource for generic timekeeping
- * T1_BOT: Timer 1, bottom:  (used by DSP in TI DSPLink code)
- * T1_TOP: Timer 1, top   :  <unused>
- */
-static struct davinci_timer_info dm644x_timer_info = {
-	.timers		= davinci_timer_instance,
-	.clockevent_id	= T0_BOT,
-	.clocksource_id	= T0_TOP,
+static const struct davinci_timer_cfg dm644x_timer_cfg = {
+	.reg = {
+		.start		= DAVINCI_TIMER0_BASE,
+		.end		= DAVINCI_TIMER0_BASE + SZ_4K,
+		.flags		= IORESOURCE_MEM,
+	},
+	.irq = {
+		{
+			.start	= IRQ_TINT0_TINT12,
+			.end	= IRQ_TINT0_TINT12,
+			.flags	= IORESOURCE_IRQ,
+		},
+		{
+			.start	= IRQ_TINT0_TINT34,
+			.end	= IRQ_TINT0_TINT34,
+			.flags	= IORESOURCE_IRQ,
+		}
+	}
 };
 
 static struct plat_serial8250_port dm644x_serial0_platform_data[] = {
@@ -649,7 +658,6 @@ static const struct davinci_soc_info davinci_soc_info_dm644x = {
 	.intc_type		= DAVINCI_INTC_TYPE_AINTC,
 	.intc_irq_prios 	= dm644x_default_priorities,
 	.intc_irq_num		= DAVINCI_N_AINTC_IRQ,
-	.timer_info		= &dm644x_timer_info,
 	.emac_pdata		= &dm644x_emac_pdata,
 	.sram_dma		= 0x00008000,
 	.sram_len		= SZ_16K,
@@ -671,6 +679,7 @@ void __init dm644x_init_time(void)
 {
 	void __iomem *pll1, *psc;
 	struct clk *clk;
+	int rv;
 
 	clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DM644X_REF_FREQ);
 
@@ -686,7 +695,8 @@ void __init dm644x_init_time(void)
 		return;
 	}
 
-	davinci_timer_init(clk);
+	rv = davinci_timer_register(clk, &dm644x_timer_cfg);
+	WARN(rv, "Unable to register the timer: %d\n", rv);
 }
 
 static struct resource dm644x_pll2_resources[] = {
-- 
2.20.1