diff options
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_osc.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_osc.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_osc.c b/arch/arm/mach-omap2/clkt2xxx_osc.c new file mode 100644 index 00000000000..2167be84a5b --- /dev/null +++ b/arch/arm/mach-omap2/clkt2xxx_osc.c | |||
@@ -0,0 +1,62 @@ | |||
1 | /* | ||
2 | * OMAP2xxx osc_clk-specific clock code | ||
3 | * | ||
4 | * Copyright (C) 2005-2008 Texas Instruments, Inc. | ||
5 | * Copyright (C) 2004-2010 Nokia Corporation | ||
6 | * | ||
7 | * Contacts: | ||
8 | * Richard Woodruff <r-woodruff2@ti.com> | ||
9 | * Paul Walmsley | ||
10 | * | ||
11 | * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, | ||
12 | * Gordon McNutt and RidgeRun, Inc. | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or modify | ||
15 | * it under the terms of the GNU General Public License version 2 as | ||
16 | * published by the Free Software Foundation. | ||
17 | */ | ||
18 | #undef DEBUG | ||
19 | |||
20 | #include <linux/module.h> | ||
21 | #include <linux/kernel.h> | ||
22 | #include <linux/errno.h> | ||
23 | #include <linux/clk.h> | ||
24 | #include <linux/io.h> | ||
25 | |||
26 | #include <plat/clock.h> | ||
27 | |||
28 | #include "clock.h" | ||
29 | #include "clock2xxx.h" | ||
30 | #include "prm.h" | ||
31 | #include "prm-regbits-24xx.h" | ||
32 | |||
33 | static int omap2_enable_osc_ck(struct clk *clk) | ||
34 | { | ||
35 | u32 pcc; | ||
36 | |||
37 | pcc = __raw_readl(prcm_clksrc_ctrl); | ||
38 | |||
39 | __raw_writel(pcc & ~OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl); | ||
40 | |||
41 | return 0; | ||
42 | } | ||
43 | |||
44 | static void omap2_disable_osc_ck(struct clk *clk) | ||
45 | { | ||
46 | u32 pcc; | ||
47 | |||
48 | pcc = __raw_readl(prcm_clksrc_ctrl); | ||
49 | |||
50 | __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl); | ||
51 | } | ||
52 | |||
53 | const struct clkops clkops_oscck = { | ||
54 | .enable = omap2_enable_osc_ck, | ||
55 | .disable = omap2_disable_osc_ck, | ||
56 | }; | ||
57 | |||
58 | unsigned long omap2_osc_clk_recalc(struct clk *clk) | ||
59 | { | ||
60 | return omap2xxx_get_apll_clkin() * omap2xxx_get_sysclkdiv(); | ||
61 | } | ||
62 | |||