soc: fsl: qe: support fsl,qe-snums property (5cfca891) · Commits · 戴 / test

Add driver support for the newly introduced fsl,qe-snums property. Conveniently, of_property_read_variable_u8_array does exactly what we need: If the property fsl,qe-snums is found (and has an allowed size), the array of values get copied to snums, and the return value is the number of snums - we cannot assign directly to num_of_snums, since we need to check whether the return value is negative. Reviewed-by:

Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by:

Qiang Zhao <qiang.zhao@nxp.com> Signed-off-by:

Rasmus Villemoes <rasmus.villemoes@prevas.dk> Signed-off-by:

Li Yang <leoyang.li@nxp.com>

drivers/soc/fsl/qe/qe.c

+14 −2

Original line number	Diff line number	Diff line
		@@ -283,7 +283,6 @@ EXPORT_SYMBOL(qe_clock_source);
		*/
		static void qe_snums_init(void)
		{
		int i;
		static const u8 snum_init_76[] = {
		0x04, 0x05, 0x0C, 0x0D, 0x14, 0x15, 0x1C, 0x1D,
		0x24, 0x25, 0x2C, 0x2D, 0x34, 0x35, 0x88, 0x89,
		@@ -304,7 +303,21 @@ static void qe_snums_init(void)
		0x28, 0x29, 0x38, 0x39, 0x48, 0x49, 0x58, 0x59,
		0x68, 0x69, 0x78, 0x79, 0x80, 0x81,
		};
		struct device_node *qe;
		const u8 *snum_init;
		int i;

		bitmap_zero(snum_state, QE_NUM_OF_SNUM);
		qe = qe_get_device_node();
		if (qe) {
		i = of_property_read_variable_u8_array(qe, "fsl,qe-snums",
		snums, 1, QE_NUM_OF_SNUM);
		of_node_put(qe);
		if (i > 0) {
		qe_num_of_snum = i;
		return;
		}
		}

		qe_num_of_snum = qe_get_num_of_snums();

		@@ -313,7 +326,6 @@ static void qe_snums_init(void)
		else
		snum_init = snum_init_46;

		bitmap_zero(snum_state, QE_NUM_OF_SNUM);
		memcpy(snums, snum_init, qe_num_of_snum);
		}

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