From 3a61a5dae49bf3d1afb7f75c8acb3607f26565af Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 19 Jan 2012 10:13:40 +0100 Subject: ARM: at91/tc: add device tree support to atmel_tclib Device tree support added to atmel_tclib: the generic Timer Counter library. This is used by the clocksource/clockevent driver tcb_clksrc. The current DT enabled platforms are also modified to use it: - .dtsi files are modified to add Timer Counter Block entries - alias are created to allow identification of each block - clkdev lookup tables are added for clocks identification. Signed-off-by: Nicolas Ferre Acked-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Grant Likely --- drivers/misc/atmel_tclib.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) (limited to 'drivers/misc/atmel_tclib.c') diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c index 7a6512a148d4..de6dea7c5d52 100644 --- a/drivers/misc/atmel_tclib.c +++ b/drivers/misc/atmel_tclib.c @@ -6,8 +6,10 @@ #include #include #include +#include #include #include +#include /* * This is a thin library to solve the problem of how to portably allocate @@ -48,7 +50,13 @@ struct atmel_tc *atmel_tc_alloc(unsigned block, const char *name) spin_lock(&tc_list_lock); list_for_each_entry(tc, &tc_list, node) { - if (tc->pdev->id == block) { + if (tc->pdev->dev.of_node) { + if (of_alias_get_id(tc->pdev->dev.of_node, "tcb") + == block) { + pdev = tc->pdev; + break; + } + } else if (tc->pdev->id == block) { pdev = tc->pdev; break; } @@ -105,6 +113,18 @@ void atmel_tc_free(struct atmel_tc *tc) } EXPORT_SYMBOL_GPL(atmel_tc_free); +#if defined(CONFIG_OF) +static const struct of_device_id atmel_tcb_dt_ids[] = { + { + .compatible = "atmel,at91rm9200-tcb", + }, { + /* sentinel */ + } +}; + +MODULE_DEVICE_TABLE(of, atmel_tcb_dt_ids); +#endif + static int __init tc_probe(struct platform_device *pdev) { struct atmel_tc *tc; @@ -154,7 +174,10 @@ static int __init tc_probe(struct platform_device *pdev) } static struct platform_driver tc_driver = { - .driver.name = "atmel_tcb", + .driver = { + .name = "atmel_tcb", + .of_match_table = of_match_ptr(atmel_tcb_dt_ids), + }, }; static int __init tc_init(void) -- cgit v1.2.3