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| author | Magnus Damm <damm+renesas@opensource.se> | 2017-09-18 15:46:42 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2017-10-19 23:48:54 +0200 |
| commit | 464eed841f54b56df35132434497235f06b154f6 (patch) | |
| tree | c23f7a877f43de54912ace975c7d9313a951ebb4 /drivers/clocksource | |
| parent | e20824e944c3bf4352fcd8d9f446c41b53901e7b (diff) | |
| download | linux-464eed841f54b56df35132434497235f06b154f6.tar.gz linux-464eed841f54b56df35132434497235f06b154f6.tar.bz2 linux-464eed841f54b56df35132434497235f06b154f6.zip | |
clocksource/drivers/sh_cmt: Use 0x3f mask for SH_CMT_48BIT case
Always use 0x3f as channel mask for the SH_CMT_48BIT type of devices.
Once this patch is applied the "renesas,channels-mask" property will
be ignored by the driver for older devices matching SH_CMT_48BIT. In
the future when all CMT types store channel mask in the driver then
we will be able to deprecate and remove "renesas,channels-mask" from DTS.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/sh_cmt.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index e09e8bf0bb9b..c104c80424c8 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -74,6 +74,8 @@ enum sh_cmt_model { struct sh_cmt_info { enum sh_cmt_model model; + unsigned int channels_mask; + unsigned long width; /* 16 or 32 bit version of hardware block */ unsigned long overflow_bit; unsigned long clear_bits; @@ -212,6 +214,7 @@ static const struct sh_cmt_info sh_cmt_info[] = { }, [SH_CMT_48BIT] = { .model = SH_CMT_48BIT, + .channels_mask = 0x3f, .width = 32, .overflow_bit = SH_CMT32_CMCSR_CMF, .clear_bits = ~(SH_CMT32_CMCSR_CMF | SH_CMT32_CMCSR_OVF), @@ -966,9 +969,14 @@ static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev) id = of_match_node(sh_cmt_of_table, pdev->dev.of_node); cmt->info = id->data; - ret = sh_cmt_parse_dt(cmt); - if (ret < 0) - return ret; + /* prefer in-driver channel configuration over DT */ + if (cmt->info->channels_mask) { + cmt->hw_channels = cmt->info->channels_mask; + } else { + ret = sh_cmt_parse_dt(cmt); + if (ret < 0) + return ret; + } } else if (pdev->dev.platform_data) { struct sh_timer_config *cfg = pdev->dev.platform_data; const struct platform_device_id *id = pdev->id_entry; |