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clocksource/drivers/sh_cmt: Use 0x3f mask for SH_CMT_48BIT case

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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>
This commit is contained in:
Magnus Damm 2017-09-18 15:46:42 +02:00 committed by Daniel Lezcano
parent e20824e944
commit 464eed841f
1 changed files with 11 additions and 3 deletions
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14
drivers/clocksource/sh_cmt.c
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@ -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;