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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-omap2/clkt2xxx_osc.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_osc.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_osc.c | 76 |
1 files changed, 76 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 00000000..c3460928 --- /dev/null +++ b/arch/arm/mach-omap2/clkt2xxx_osc.c @@ -0,0 +1,76 @@ +/* + * OMAP2xxx osc_clk-specific clock code + * + * Copyright (C) 2005-2008 Texas Instruments, Inc. + * Copyright (C) 2004-2010 Nokia Corporation + * + * Contacts: + * Richard Woodruff <r-woodruff2@ti.com> + * Paul Walmsley + * + * Based on earlier work by Tuukka Tikkanen, Tony Lindgren, + * Gordon McNutt and RidgeRun, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#undef DEBUG + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <plat/clock.h> + +#include "clock.h" +#include "clock2xxx.h" +#include "prm2xxx_3xxx.h" +#include "prm-regbits-24xx.h" + +/* + * XXX This does not actually enable the osc_ck, since the osc_ck must + * be running for this function to be called. Instead, this function + * is used to disable an autoidle mode on the osc_ck. The existing + * clk_enable/clk_disable()-based usecounting for osc_ck should be + * replaced with autoidle-based usecounting. + */ +static int omap2_enable_osc_ck(struct clk *clk) +{ + u32 pcc; + + pcc = __raw_readl(prcm_clksrc_ctrl); + + __raw_writel(pcc & ~OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl); + + return 0; +} + +/* + * XXX This does not actually disable the osc_ck, since doing so would + * immediately halt the system. Instead, this function is used to + * enable an autoidle mode on the osc_ck. The existing + * clk_enable/clk_disable()-based usecounting for osc_ck should be + * replaced with autoidle-based usecounting. + */ +static void omap2_disable_osc_ck(struct clk *clk) +{ + u32 pcc; + + pcc = __raw_readl(prcm_clksrc_ctrl); + + __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl); +} + +const struct clkops clkops_oscck = { + .enable = omap2_enable_osc_ck, + .disable = omap2_disable_osc_ck, +}; + +unsigned long omap2_osc_clk_recalc(struct clk *clk) +{ + return omap2xxx_get_apll_clkin() * omap2xxx_get_sysclkdiv(); +} + |