C++ (Cpp) spear_clocksource_init Examples

Example #1

File: time.c Project: 4atty/linux

void __init spear_setup_of_timer(void)
{
	struct device_node *np;
	int irq, ret;

	np = of_find_matching_node(NULL, timer_of_match);
	if (!np) {
		pr_err("%s: No timer passed via DT\n", __func__);
		return;
	}

	irq = irq_of_parse_and_map(np, 0);
	if (!irq) {
		pr_err("%s: No irq passed for timer via DT\n", __func__);
		return;
	}

	gpt_base = of_iomap(np, 0);
	if (!gpt_base) {
		pr_err("%s: of iomap failed\n", __func__);
		return;
	}

	gpt_clk = clk_get_sys("gpt0", NULL);
	if (!gpt_clk) {
		pr_err("%s:couldn't get clk for gpt\n", __func__);
		goto err_iomap;
	}

	ret = clk_prepare_enable(gpt_clk);
	if (ret < 0) {
		pr_err("%s:couldn't prepare-enable gpt clock\n", __func__);
		goto err_prepare_enable_clk;
	}

	spear_clockevent_init(irq);
	spear_clocksource_init();

	return;

err_prepare_enable_clk:
	clk_put(gpt_clk);
err_iomap:
	iounmap(gpt_base);
}

Example #2

File: time.c Project: Blackburn29/PsycoKernel

void __init spear_setup_timer(void)
{
	int ret;

	if (!request_mem_region(SPEAR_GPT0_BASE, SZ_1K, "gpt0")) {
		pr_err("%s:cannot get IO addr\n", __func__);
		return;
	}

	gpt_base = (void __iomem *)ioremap(SPEAR_GPT0_BASE, SZ_1K);
	if (!gpt_base) {
		pr_err("%s:ioremap failed for gpt\n", __func__);
		goto err_mem;
	}

	gpt_clk = clk_get_sys("gpt0", NULL);
	if (!gpt_clk) {
		pr_err("%s:couldn't get clk for gpt\n", __func__);
		goto err_iomap;
	}

	ret = clk_enable(gpt_clk);
	if (ret < 0) {
		pr_err("%s:couldn't enable gpt clock\n", __func__);
		goto err_clk;
	}

	spear_clockevent_init();
	spear_clocksource_init();

	return;

err_clk:
	clk_put(gpt_clk);
err_iomap:
	iounmap(gpt_base);
err_mem:
	release_mem_region(SPEAR_GPT0_BASE, SZ_1K);
}