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Message-id: <20181017134159.9656-4-m.szyprowski@samsung.com>
Date: Wed, 17 Oct 2018 15:41:56 +0200
From: Marek Szyprowski <m.szyprowski@...sung.com>
To: linux-samsung-soc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
Will Deacon <will.deacon@....com>,
Catalin Marinas <catalin.marinas@....com>,
Marc Zyngier <marc.zyngier@....com>,
Thomas Gleixner <tglx@...utronix.de>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Krzysztof Kozlowski <krzk@...nel.org>,
Chanwoo Choi <cw00.choi@...sung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Inki Dae <inki.dae@...sung.com>
Subject: [PATCH v3 3/6] clocksource: exynos_mct: Refactor resources
allocation
Move interrupts allocation from exynos4_timer_resources() into separate
function together with the interrupt number parsing code from
mct_init_dt(), so the code for managing interrupts is kept together.
While touching exynos4_timer_resources() function, move of_iomap() to it.
No functional changes.
Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
---
drivers/clocksource/exynos_mct.c | 49 +++++++++++++++++++-------------
1 file changed, 30 insertions(+), 19 deletions(-)
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index 49413900b24c..02ad55db390b 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -502,11 +502,14 @@ static int exynos4_mct_dying_cpu(unsigned int cpu)
return 0;
}
-static int __init exynos4_timer_resources(struct device_node *np, void __iomem *base)
+static int __init exynos4_timer_resources(struct device_node *np)
{
- int err, cpu;
struct clk *mct_clk, *tick_clk;
+ reg_base = of_iomap(np, 0);
+ if (!reg_base)
+ panic("%s: unable to ioremap mct address space\n", __func__);
+
tick_clk = of_clk_get_by_name(np, "fin_pll");
if (IS_ERR(tick_clk))
panic("%s: unable to determine tick clock rate\n", __func__);
@@ -517,9 +520,27 @@ static int __init exynos4_timer_resources(struct device_node *np, void __iomem *
panic("%s: unable to retrieve mct clock instance\n", __func__);
clk_prepare_enable(mct_clk);
- reg_base = base;
- if (!reg_base)
- panic("%s: unable to ioremap mct address space\n", __func__);
+ return 0;
+}
+
+static int __init exynos4_timer_interrupts(struct device_node *np,
+ unsigned int int_type)
+{
+ int i, err, cpu;
+
+ mct_int_type = int_type;
+
+ /* This driver uses only one global timer interrupt */
+ mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
+
+ /*
+ * Find out the number of local irqs specified. The local
+ * timer irqs are specified after the four global timer
+ * irqs are specified.
+ */
+ nr_irqs = of_irq_count(np);
+ for (i = MCT_L0_IRQ; i < nr_irqs; i++)
+ mct_irqs[i] = irq_of_parse_and_map(np, i);
if (mct_int_type == MCT_INT_PPI) {
@@ -579,24 +600,14 @@ static int __init exynos4_timer_resources(struct device_node *np, void __iomem *
static int __init mct_init_dt(struct device_node *np, unsigned int int_type)
{
- u32 nr_irqs, i;
int ret;
- mct_int_type = int_type;
-
- /* This driver uses only one global timer interrupt */
- mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
+ ret = exynos4_timer_resources(np);
+ if (ret)
+ return ret;
- /*
- * Find out the number of local irqs specified. The local
- * timer irqs are specified after the four global timer
- * irqs are specified.
- */
- nr_irqs = of_irq_count(np);
- for (i = MCT_L0_IRQ; i < nr_irqs; i++)
- mct_irqs[i] = irq_of_parse_and_map(np, i);
- ret = exynos4_timer_resources(np, of_iomap(np, 0));
+ ret = exynos4_timer_interrupts(np, int_type);
if (ret)
return ret;
--
2.17.1
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