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soc: fsl: cpm1: qmc: Introduce qmc_chan_count_phandles()

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No function in the QMC API is available to get the number of phandles
present in a phandle list.

Fill this lack introducing qmc_chan_count_phandles().

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://patch.msgid.link/20240701113038.55144-9-herve.codina@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Herve Codina 2024-07-01 13:30:35 +02:00 committed by Mark Brown
parent 37797c605d
commit af8432b2e4
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2 changed files with 15 additions and 0 deletions
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13
drivers/soc/fsl/qe/qmc.c
View File

@ -1777,6 +1777,19 @@ static struct qmc_chan *qmc_chan_get_from_qmc(struct device_node *qmc_np, unsign
return qmc_chan;
}
int qmc_chan_count_phandles(struct device_node *np, const char *phandles_name)
{
int count;
/* phandles are fixed args phandles with one arg */
count = of_count_phandle_with_args(np, phandles_name, NULL);
if (count < 0)
return count;
return count / 2;
}
EXPORT_SYMBOL(qmc_chan_count_phandles);
struct qmc_chan *qmc_chan_get_byphandles_index(struct device_node *np,
const char *phandles_name,
int index)

2
include/soc/fsl/qe/qmc.h
View File

@ -16,6 +16,8 @@ struct device_node;
struct device;
struct qmc_chan;
int qmc_chan_count_phandles(struct device_node *np, const char *phandles_name);
struct qmc_chan *qmc_chan_get_byphandles_index(struct device_node *np,
const char *phandles_name,
int index);