Commit cbd07781 authored by Martin Kaiser's avatar Martin Kaiser Committed by Herbert Xu
Browse files

hwrng: imx-rngc - use bitfield macros to read rng type 



Use the mechanism from bitfield.h to read the rng type field in the
version_id register. This makes the code a tiny bit simpler.

Signed-off-by: default avatarMartin Kaiser <martin@kaiser.cx>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 97ecafc4

drivers/char/hw_random/imx-rngc.c

+2 −2
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ 
#define RNGC_FIFO			0x0014



/* the fields in the ver id register */

#define RNGC_TYPE_SHIFT		28

#define RNG_TYPE			GENMASK(31, 28)

#define RNGC_VER_MAJ_SHIFT		8



/* the rng_type field */
@@ -251,7 +251,7 @@ static int imx_rngc_probe(struct platform_device *pdev) 
		return irq;



	ver_id = readl(rngc->base + RNGC_VER_ID);

	rng_type = ver_id >> RNGC_TYPE_SHIFT;

	rng_type = FIELD_GET(RNG_TYPE, ver_id);

	/*

	 * This driver supports only RNGC and RNGB. (There's a different

	 * driver for RNGA.)