linux-kernel - [PATCH 11/17] ARM: davinci: da830: switch to using the clocksource driver

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Message-Id: <20190111172134.30147-12-brgl@bgdev.pl>
Date:   Fri, 11 Jan 2019 18:21:28 +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 11/17] ARM: davinci: da830: 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/da830.c | 56 ++++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 27 deletions(-)

diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
index ceb0417f10f6..0d81a8fdd9e6 100644
--- a/arch/arm/mach-davinci/da830.c
+++ b/arch/arm/mach-davinci/da830.c
@@ -20,7 +20,8 @@
 #include <mach/cputype.h>
 #include <mach/da8xx.h>
 #include <mach/irqs.h>
-#include <mach/time.h>
+
+#include <clocksource/timer-davinci.h>
 
 #include "mux.h"
 
@@ -769,32 +770,32 @@ int __init da830_register_gpio(void)
 	return da8xx_register_gpio(&da830_gpio_platform_data);
 }
 
-static struct davinci_timer_instance da830_timer_instance[2] = {
-	{
-		.base		= DA8XX_TIMER64P0_BASE,
-		.bottom_irq	= IRQ_DA8XX_TINT12_0,
-		.top_irq	= IRQ_DA8XX_TINT34_0,
-		.cmp_off	= DA830_CMP12_0,
-		.cmp_irq	= IRQ_DA830_T12CMPINT0_0,
+static const struct davinci_timer_cfg da830_timer_cfg = {
+	.reg = {
+		.start		= DA8XX_TIMER64P0_BASE,
+		.end		= DA8XX_TIMER64P0_BASE + SZ_4K,
+		.flags		= IORESOURCE_MEM,
 	},
-	{
-		.base		= DA8XX_TIMER64P1_BASE,
-		.bottom_irq	= IRQ_DA8XX_TINT12_1,
-		.top_irq	= IRQ_DA8XX_TINT34_1,
-		.cmp_off	= DA830_CMP12_0,
-		.cmp_irq	= IRQ_DA830_T12CMPINT0_1,
+	.irq = {
+		{
+			.start	= IRQ_DA8XX_TINT12_0,
+			.end	= IRQ_DA8XX_TINT12_0,
+			.flags	= IORESOURCE_IRQ,
+		},
+		{
+			.start	= IRQ_DA8XX_TINT34_0,
+			.end	= IRQ_DA8XX_TINT34_0,
+			.flags	= IORESOURCE_IRQ,
+		},
 	},
-};
-
-/*
- * T0_BOT: Timer 0, bottom		: Used for clock_event & clocksource
- * T0_TOP: Timer 0, top			: Used by DSP
- * T1_BOT, T1_TOP: Timer 1, bottom & top: Used for watchdog timer
- */
-static struct davinci_timer_info da830_timer_info = {
-	.timers		= da830_timer_instance,
-	.clockevent_id	= T0_BOT,
-	.clocksource_id	= T0_BOT,
+	.cmp = {
+		.irq = {
+			.start	= IRQ_DA830_T12CMPINT0_0,
+			.end	= IRQ_DA830_T12CMPINT0_0,
+			.flags	= IORESOURCE_IRQ,
+		},
+		.offset		= DA830_CMP12_0,
+	}
 };
 
 static const struct davinci_soc_info davinci_soc_info_da830 = {
@@ -810,7 +811,6 @@ static const struct davinci_soc_info davinci_soc_info_da830 = {
 	.intc_type		= DAVINCI_INTC_TYPE_CP_INTC,
 	.intc_irq_prios		= da830_default_priorities,
 	.intc_irq_num		= DA830_N_CP_INTC_IRQ,
-	.timer_info		= &da830_timer_info,
 	.emac_pdata		= &da8xx_emac_pdata,
 };
 
@@ -826,6 +826,7 @@ void __init da830_init_time(void)
 {
 	void __iomem *pll;
 	struct clk *clk;
+	int rv;
 
 	clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DA830_REF_FREQ);
 
@@ -836,7 +837,8 @@ void __init da830_init_time(void)
 	clk = clk_get(NULL, "timer0");
 	WARN(IS_ERR(clk), "Unable to get the timer clock\n");
 
-	davinci_timer_init(clk);
+	rv = davinci_timer_register(clk, &da830_timer_cfg);
+	WARN(rv, "Unable to register the timer: %d\n", rv);
 }
 
 static struct resource da830_psc0_resources[] = {
-- 
2.19.1