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| author | Jarkko Nikula <jarkko.nikula@bitmer.com> | 2011-09-26 07:45:49 (GMT) |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2011-09-27 00:49:07 (GMT) |
| commit | 7bc0c4bac72375517d904e02c46da2a23e079e8b (patch) | |
| tree | ce6c581b486751062adafd0e33c126ccb183c116 /arch/arm/mach-omap2/mcbsp.c | |
| parent | 09d28d2c19fe5c2d51b3133329584166dec89f86 (diff) | |
| download | linux-7bc0c4bac72375517d904e02c46da2a23e079e8b.tar.xz | |
ARM: OMAP: mcbsp: Start generalize signal muxing functions
This generalizes the omap2_mcbsp1_mux_clkr_src and omap2_mcbsp1_mux_fsr_src
implementation between generic McBSP and OMAP2 specific McBSP code. These
functions are used to select source for CLKR and FSR signals on OMAP2+.
Start generalizing the code by implementing an optional mux_signal function
pointer in platform data that will implement the actual muxing and which is
called now from omap2_mcbsp1_mux_clkr_src and omap2_mcbsp1_mux_fsr_src.
These functions are to be removed later and cleanup the API so that
mux_signal gets its arguments directly from client code.
Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/mcbsp.c')
| -rw-r--r-- | arch/arm/mach-omap2/mcbsp.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c index 3dd4c47..5063f25 100644 --- a/arch/arm/mach-omap2/mcbsp.c +++ b/arch/arm/mach-omap2/mcbsp.c @@ -34,33 +34,36 @@ #include "cm2xxx_3xxx.h" #include "cm-regbits-34xx.h" -/* McBSP internal signal muxing functions */ - -void omap2_mcbsp1_mux_clkr_src(u8 mux) +/* McBSP internal signal muxing function */ +static int omap2_mcbsp1_mux_rx_clk(struct device *dev, const char *signal, + const char *src) { u32 v; v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); - if (mux == CLKR_SRC_CLKR) - v &= ~OMAP2_MCBSP1_CLKR_MASK; - else if (mux == CLKR_SRC_CLKX) - v |= OMAP2_MCBSP1_CLKR_MASK; - omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); -} -EXPORT_SYMBOL(omap2_mcbsp1_mux_clkr_src); -void omap2_mcbsp1_mux_fsr_src(u8 mux) -{ - u32 v; + if (!strcmp(signal, "clkr")) { + if (!strcmp(src, "clkr")) + v &= ~OMAP2_MCBSP1_CLKR_MASK; + else if (!strcmp(src, "clkx")) + v |= OMAP2_MCBSP1_CLKR_MASK; + else + return -EINVAL; + } else if (!strcmp(signal, "fsr")) { + if (!strcmp(src, "fsr")) + v &= ~OMAP2_MCBSP1_FSR_MASK; + else if (!strcmp(src, "fsx")) + v |= OMAP2_MCBSP1_FSR_MASK; + else + return -EINVAL; + } else { + return -EINVAL; + } - v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); - if (mux == FSR_SRC_FSR) - v &= ~OMAP2_MCBSP1_FSR_MASK; - else if (mux == FSR_SRC_FSX) - v |= OMAP2_MCBSP1_FSR_MASK; omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0); + + return 0; } -EXPORT_SYMBOL(omap2_mcbsp1_mux_fsr_src); /* McBSP CLKS source switching function */ static int omap2_mcbsp_set_clk_src(struct device *dev, struct clk *clk, @@ -181,6 +184,8 @@ static int omap_init_mcbsp(struct omap_hwmod *oh, void *unused) return PTR_ERR(pdev); } pdata->set_clk_src = omap2_mcbsp_set_clk_src; + if (id == 1) + pdata->mux_signal = omap2_mcbsp1_mux_rx_clk; omap_mcbsp_count++; return 0; } |