diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c index 594f7f786e9a..6142740e8000 100644 --- a/arch/arm/mach-imx/time.c +++ b/arch/arm/mach-imx/time.c @@ -92,6 +92,11 @@ struct imx_timer { int irq; struct clk *clk_per; struct clk *clk_ipg; + const struct imx_gpt_data *gpt; +}; + +struct imx_gpt_data { + void (*gpt_setup_tctl)(struct imx_timer *imxtm); }; static void __iomem *timer_base; @@ -307,13 +312,83 @@ static int __init mxc_clockevent_init(struct imx_timer *imxtm) return 0; } +static void imx1_gpt_setup_tctl(struct imx_timer *imxtm) +{ + u32 tctl_val; + + tctl_val = MX1_2_TCTL_FRR | MX1_2_TCTL_CLK_PCLK1 | MXC_TCTL_TEN; + writel_relaxed(tctl_val, imxtm->base + MXC_TCTL); +} +#define imx21_gpt_setup_tctl imx1_gpt_setup_tctl + +static void imx31_gpt_setup_tctl(struct imx_timer *imxtm) +{ + u32 tctl_val; + + tctl_val = V2_TCTL_FRR | V2_TCTL_WAITEN | MXC_TCTL_TEN; + if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) + tctl_val |= V2_TCTL_CLK_OSC_DIV8; + else + tctl_val |= V2_TCTL_CLK_PER; + + writel_relaxed(tctl_val, imxtm->base + MXC_TCTL); +} + +static void imx6dl_gpt_setup_tctl(struct imx_timer *imxtm) +{ + u32 tctl_val; + + tctl_val = V2_TCTL_FRR | V2_TCTL_WAITEN | MXC_TCTL_TEN; + if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) { + tctl_val |= V2_TCTL_CLK_OSC_DIV8; + /* 24 / 8 = 3 MHz */ + writel_relaxed(7 << V2_TPRER_PRE24M, imxtm->base + MXC_TPRER); + tctl_val |= V2_TCTL_24MEN; + } else { + tctl_val |= V2_TCTL_CLK_PER; + } + + writel_relaxed(tctl_val, imxtm->base + MXC_TCTL); +} + +static const struct imx_gpt_data imx1_gpt_data = { + .gpt_setup_tctl = imx1_gpt_setup_tctl, +}; + +static const struct imx_gpt_data imx21_gpt_data = { + .gpt_setup_tctl = imx21_gpt_setup_tctl, +}; + +static const struct imx_gpt_data imx31_gpt_data = { + .gpt_setup_tctl = imx31_gpt_setup_tctl, +}; + +static const struct imx_gpt_data imx6dl_gpt_data = { + .gpt_setup_tctl = imx6dl_gpt_setup_tctl, +}; + static void __init _mxc_timer_init(struct imx_timer *imxtm) { - uint32_t tctl_val; - /* Temporary */ timer_base = imxtm->base; + switch (imxtm->type) { + case GPT_TYPE_IMX1: + imxtm->gpt = &imx1_gpt_data; + break; + case GPT_TYPE_IMX21: + imxtm->gpt = &imx21_gpt_data; + break; + case GPT_TYPE_IMX31: + imxtm->gpt = &imx31_gpt_data; + break; + case GPT_TYPE_IMX6DL: + imxtm->gpt = &imx6dl_gpt_data; + break; + default: + BUG(); + } + if (IS_ERR(imxtm->clk_per)) { pr_err("i.MX timer: unable to get clk\n"); return; @@ -331,24 +406,7 @@ static void __init _mxc_timer_init(struct imx_timer *imxtm) writel_relaxed(0, imxtm->base + MXC_TCTL); writel_relaxed(0, imxtm->base + MXC_TPRER); /* see datasheet note */ - if (timer_is_v2()) { - tctl_val = V2_TCTL_FRR | V2_TCTL_WAITEN | MXC_TCTL_TEN; - if (clk_get_rate(imxtm->clk_per) == V2_TIMER_RATE_OSC_DIV8) { - tctl_val |= V2_TCTL_CLK_OSC_DIV8; - if (cpu_is_imx6dl() || cpu_is_imx6sx()) { - /* 24 / 8 = 3 MHz */ - writel_relaxed(7 << V2_TPRER_PRE24M, - imxtm->base + MXC_TPRER); - tctl_val |= V2_TCTL_24MEN; - } - } else { - tctl_val |= V2_TCTL_CLK_PER; - } - } else { - tctl_val = MX1_2_TCTL_FRR | MX1_2_TCTL_CLK_PCLK1 | MXC_TCTL_TEN; - } - - writel_relaxed(tctl_val, imxtm->base + MXC_TCTL); + imxtm->gpt->gpt_setup_tctl(imxtm); /* init and register the timer to the framework */ mxc_clocksource_init(imxtm);