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Date: Thu, 22 Apr 2010 13:41:41 +0200
From: Sascha Hauer <s.hauer@...gutronix.de>
To: Amit Kucheria <amit.kucheria@...onical.com>
Cc: Russell King <linux@....linux.org.uk>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mxc: Change gpt timer code to be more generic by using
V2 instead of MX3
On Wed, Apr 21, 2010 at 09:34:36PM +0300, Amit Kucheria wrote:
> Replace mx3_ with v2_ since the register layout is the same for all SoCs using
> version 2 of the timer (mx25, mx31, mx37 and now mx51)
Ok, applied.
>
> Signed-off-by: Amit Kucheria <amit.kucheria@...onical.com>
> ---
> arch/arm/plat-mxc/time.c | 44 ++++++++++++++++++++++----------------------
> 1 files changed, 22 insertions(+), 22 deletions(-)
>
> diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c
> index c1ce51a..714bdef 100644
> --- a/arch/arm/plat-mxc/time.c
> +++ b/arch/arm/plat-mxc/time.c
> @@ -54,14 +54,14 @@
> #define MX2_TSTAT_COMP (1 << 0)
>
> /* MX31, MX35, MX25, MXC91231, MX5 */
> -#define MX3_TCTL_WAITEN (1 << 3) /* Wait enable mode */
> -#define MX3_TCTL_CLK_IPG (1 << 6)
> -#define MX3_TCTL_FRR (1 << 9)
> -#define MX3_IR 0x0c
> -#define MX3_TSTAT 0x08
> -#define MX3_TSTAT_OF1 (1 << 0)
> -#define MX3_TCN 0x24
> -#define MX3_TCMP 0x10
> +#define V2_TCTL_WAITEN (1 << 3) /* Wait enable mode */
> +#define V2_TCTL_CLK_IPG (1 << 6)
> +#define V2_TCTL_FRR (1 << 9)
> +#define V2_IR 0x0c
> +#define V2_TSTAT 0x08
> +#define V2_TSTAT_OF1 (1 << 0)
> +#define V2_TCN 0x24
> +#define V2_TCMP 0x10
>
> #define timer_is_v1() (cpu_is_mx1() || cpu_is_mx21() || cpu_is_mx27())
> #define timer_is_v2() (!timer_is_v1())
> @@ -76,7 +76,7 @@ static inline void gpt_irq_disable(void)
> unsigned int tmp;
>
> if (timer_is_v2())
> - __raw_writel(0, timer_base + MX3_IR);
> + __raw_writel(0, timer_base + V2_IR);
> else {
> tmp = __raw_readl(timer_base + MXC_TCTL);
> __raw_writel(tmp & ~MX1_2_TCTL_IRQEN, timer_base + MXC_TCTL);
> @@ -86,7 +86,7 @@ static inline void gpt_irq_disable(void)
> static inline void gpt_irq_enable(void)
> {
> if (timer_is_v2())
> - __raw_writel(1<<0, timer_base + MX3_IR);
> + __raw_writel(1<<0, timer_base + V2_IR);
> else {
> __raw_writel(__raw_readl(timer_base + MXC_TCTL) | MX1_2_TCTL_IRQEN,
> timer_base + MXC_TCTL);
> @@ -110,9 +110,9 @@ static cycle_t mx1_2_get_cycles(struct clocksource *cs)
> return __raw_readl(timer_base + MX1_2_TCN);
> }
>
> -static cycle_t mx3_get_cycles(struct clocksource *cs)
> +static cycle_t v2_get_cycles(struct clocksource *cs)
> {
> - return __raw_readl(timer_base + MX3_TCN);
> + return __raw_readl(timer_base + V2_TCN);
> }
>
> static struct clocksource clocksource_mxc = {
> @@ -129,7 +129,7 @@ static int __init mxc_clocksource_init(struct clk *timer_clk)
> unsigned int c = clk_get_rate(timer_clk);
>
> if (timer_is_v2())
> - clocksource_mxc.read = mx3_get_cycles;
> + clocksource_mxc.read = v2_get_cycles;
>
> clocksource_mxc.mult = clocksource_hz2mult(c,
> clocksource_mxc.shift);
> @@ -153,16 +153,16 @@ static int mx1_2_set_next_event(unsigned long evt,
> -ETIME : 0;
> }
>
> -static int mx3_set_next_event(unsigned long evt,
> +static int v2_set_next_event(unsigned long evt,
> struct clock_event_device *unused)
> {
> unsigned long tcmp;
>
> - tcmp = __raw_readl(timer_base + MX3_TCN) + evt;
> + tcmp = __raw_readl(timer_base + V2_TCN) + evt;
>
> - __raw_writel(tcmp, timer_base + MX3_TCMP);
> + __raw_writel(tcmp, timer_base + V2_TCMP);
>
> - return (int)(tcmp - __raw_readl(timer_base + MX3_TCN)) < 0 ?
> + return (int)(tcmp - __raw_readl(timer_base + V2_TCN)) < 0 ?
> -ETIME : 0;
> }
>
> @@ -192,8 +192,8 @@ static void mxc_set_mode(enum clock_event_mode mode,
> if (mode != clockevent_mode) {
> /* Set event time into far-far future */
> if (timer_is_v2())
> - __raw_writel(__raw_readl(timer_base + MX3_TCN) - 3,
> - timer_base + MX3_TCMP);
> + __raw_writel(__raw_readl(timer_base + V2_TCN) - 3,
> + timer_base + V2_TCMP);
> else
> __raw_writel(__raw_readl(timer_base + MX1_2_TCN) - 3,
> timer_base + MX1_2_TCMP);
> @@ -245,7 +245,7 @@ static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id)
> uint32_t tstat;
>
> if (timer_is_v2())
> - tstat = __raw_readl(timer_base + MX3_TSTAT);
> + tstat = __raw_readl(timer_base + V2_TSTAT);
> else
> tstat = __raw_readl(timer_base + MX1_2_TSTAT);
>
> @@ -276,7 +276,7 @@ static int __init mxc_clockevent_init(struct clk *timer_clk)
> unsigned int c = clk_get_rate(timer_clk);
>
> if (timer_is_v2())
> - clockevent_mxc.set_next_event = mx3_set_next_event;
> + clockevent_mxc.set_next_event = v2_set_next_event;
>
> clockevent_mxc.mult = div_sc(c, NSEC_PER_SEC,
> clockevent_mxc.shift);
> @@ -308,7 +308,7 @@ void __init mxc_timer_init(struct clk *timer_clk, void __iomem *base, int irq)
> __raw_writel(0, timer_base + MXC_TPRER); /* see datasheet note */
>
> if (timer_is_v2())
> - tctl_val = MX3_TCTL_CLK_IPG | MX3_TCTL_FRR | MX3_TCTL_WAITEN | MXC_TCTL_TEN;
> + tctl_val = V2_TCTL_CLK_IPG | V2_TCTL_FRR | V2_TCTL_WAITEN | MXC_TCTL_TEN;
> else
> tctl_val = MX1_2_TCTL_FRR | MX1_2_TCTL_CLK_PCLK1 | MXC_TCTL_TEN;
>
> --
> 1.7.0.4
>
>
--
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