* [PATCH 0/3] hwrng: imx-rngc - simplify register definitions
@ 2023-04-27 18:53 Martin Kaiser
2023-04-27 18:53 ` [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level Martin Kaiser
` (3 more replies)
0 siblings, 4 replies; 11+ messages in thread
From: Martin Kaiser @ 2023-04-27 18:53 UTC (permalink / raw)
To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser
This series simplifies some definitions for register bits and fields. We can
then use the FIELD_GET macro to read register fields instead of masking and
shifting manually.
Tested on an imx258 board (rngb).
Martin Kaiser (3):
hwrng: imx-rngc - use bitfield macros to read fifo level
hwrng: imx-rngc - use bitfield macros to read rng type
hwrng: imx-rngc - use BIT(x) for register bit defines
drivers/char/hw_random/imx-rngc.c | 32 +++++++++++++++----------------
1 file changed, 15 insertions(+), 17 deletions(-)
--
2.30.2
^ permalink raw reply [flat|nested] 11+ messages in thread* [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level 2023-04-27 18:53 [PATCH 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser @ 2023-04-27 18:53 ` Martin Kaiser 2023-05-11 5:16 ` Herbert Xu 2023-04-27 18:53 ` [PATCH 2/3] hwrng: imx-rngc - use bitfield macros to read rng type Martin Kaiser ` (2 subsequent siblings) 3 siblings, 1 reply; 11+ messages in thread From: Martin Kaiser @ 2023-04-27 18:53 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser Use the mechanism from bitfield.h to read the fifo level field in the status register. This makes the code a tiny bit simpler. Signed-off-by: Martin Kaiser <martin@kaiser.cx> --- drivers/char/hw_random/imx-rngc.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index a1c24148ed31..861a615ac7df 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -17,6 +17,7 @@ #include <linux/hw_random.h> #include <linux/completion.h> #include <linux/io.h> +#include <linux/bitfield.h> #define RNGC_VER_ID 0x0000 #define RNGC_COMMAND 0x0004 @@ -44,8 +45,7 @@ #define RNGC_CTRL_AUTO_SEED 0x00000010 #define RNGC_STATUS_ERROR 0x00010000 -#define RNGC_STATUS_FIFO_LEVEL_MASK 0x00000f00 -#define RNGC_STATUS_FIFO_LEVEL_SHIFT 8 +#define RNGC_STATUS_FIFO_LEVEL GENMASK(11, 8) #define RNGC_STATUS_SEED_DONE 0x00000020 #define RNGC_STATUS_ST_DONE 0x00000010 @@ -133,9 +133,7 @@ static int imx_rngc_read(struct hwrng *rng, void *data, size_t max, bool wait) break; /* how many random numbers are in FIFO? [0-16] */ - level = (status & RNGC_STATUS_FIFO_LEVEL_MASK) >> - RNGC_STATUS_FIFO_LEVEL_SHIFT; - + level = FIELD_GET(RNGC_STATUS_FIFO_LEVEL, status); if (level) { /* retrieve a random number from FIFO */ *(u32 *)data = readl(rngc->base + RNGC_FIFO); -- 2.30.2 ^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level 2023-04-27 18:53 ` [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level Martin Kaiser @ 2023-05-11 5:16 ` Herbert Xu 2023-05-11 7:43 ` Martin Kaiser 0 siblings, 1 reply; 11+ messages in thread From: Herbert Xu @ 2023-05-11 5:16 UTC (permalink / raw) To: Martin Kaiser; +Cc: linux-crypto, linux-arm-kernel, linux-kernel On Thu, Apr 27, 2023 at 08:53:55PM +0200, Martin Kaiser wrote: > > @@ -133,9 +133,7 @@ static int imx_rngc_read(struct hwrng *rng, void *data, size_t max, bool wait) > break; > > /* how many random numbers are in FIFO? [0-16] */ > - level = (status & RNGC_STATUS_FIFO_LEVEL_MASK) >> > - RNGC_STATUS_FIFO_LEVEL_SHIFT; > - > + level = FIELD_GET(RNGC_STATUS_FIFO_LEVEL, status); Wouldn't it be simpler to just get rid of the shift? Thanks, -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt ^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level 2023-05-11 5:16 ` Herbert Xu @ 2023-05-11 7:43 ` Martin Kaiser 0 siblings, 0 replies; 11+ messages in thread From: Martin Kaiser @ 2023-05-11 7:43 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel Thus wrote Herbert Xu (herbert@gondor.apana.org.au): > On Thu, Apr 27, 2023 at 08:53:55PM +0200, Martin Kaiser wrote: > > @@ -133,9 +133,7 @@ static int imx_rngc_read(struct hwrng *rng, void *data, size_t max, bool wait) > > break; > > /* how many random numbers are in FIFO? [0-16] */ > > - level = (status & RNGC_STATUS_FIFO_LEVEL_MASK) >> > > - RNGC_STATUS_FIFO_LEVEL_SHIFT; > > - > > + level = FIELD_GET(RNGC_STATUS_FIFO_LEVEL, status); > Wouldn't it be simpler to just get rid of the shift? Yes, we're only checking that level > 0, there's no need for the shift. I'll submit a new version of the patch. Thanks, Martin ^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH 2/3] hwrng: imx-rngc - use bitfield macros to read rng type 2023-04-27 18:53 [PATCH 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 2023-04-27 18:53 ` [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level Martin Kaiser @ 2023-04-27 18:53 ` Martin Kaiser 2023-04-27 18:53 ` [PATCH 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 3 siblings, 0 replies; 11+ messages in thread From: Martin Kaiser @ 2023-04-27 18:53 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser 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: Martin Kaiser <martin@kaiser.cx> --- drivers/char/hw_random/imx-rngc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index 861a615ac7df..546dc3655e5b 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -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 */ @@ -254,7 +254,7 @@ 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.) -- 2.30.2 ^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines 2023-04-27 18:53 [PATCH 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 2023-04-27 18:53 ` [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level Martin Kaiser 2023-04-27 18:53 ` [PATCH 2/3] hwrng: imx-rngc - use bitfield macros to read rng type Martin Kaiser @ 2023-04-27 18:53 ` Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 3 siblings, 0 replies; 11+ messages in thread From: Martin Kaiser @ 2023-04-27 18:53 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser Rewrite the defines for register bits to use BIT(x) instead of writing out the 32-bit number. This makes it easier to compare the code with the register descriptions in the reference manual. Signed-off-by: Martin Kaiser <martin@kaiser.cx> --- drivers/char/hw_random/imx-rngc.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index 546dc3655e5b..6872d1c0060b 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -35,19 +35,19 @@ #define RNGC_TYPE_RNGC 0x2 -#define RNGC_CMD_CLR_ERR 0x00000020 -#define RNGC_CMD_CLR_INT 0x00000010 -#define RNGC_CMD_SEED 0x00000002 -#define RNGC_CMD_SELF_TEST 0x00000001 +#define RNGC_CMD_CLR_ERR BIT(5) +#define RNGC_CMD_CLR_INT BIT(4) +#define RNGC_CMD_SEED BIT(1) +#define RNGC_CMD_SELF_TEST BIT(0) -#define RNGC_CTRL_MASK_ERROR 0x00000040 -#define RNGC_CTRL_MASK_DONE 0x00000020 -#define RNGC_CTRL_AUTO_SEED 0x00000010 +#define RNGC_CTRL_MASK_ERROR BIT(6) +#define RNGC_CTRL_MASK_DONE BIT(5) +#define RNGC_CTRL_AUTO_SEED BIT(4) -#define RNGC_STATUS_ERROR 0x00010000 +#define RNGC_STATUS_ERROR BIT(16) #define RNGC_STATUS_FIFO_LEVEL GENMASK(11, 8) -#define RNGC_STATUS_SEED_DONE 0x00000020 -#define RNGC_STATUS_ST_DONE 0x00000010 +#define RNGC_STATUS_SEED_DONE BIT(5) +#define RNGC_STATUS_ST_DONE BIT(4) #define RNGC_ERROR_STATUS_STAT_ERR 0x00000008 -- 2.30.2 ^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions 2023-04-27 18:53 [PATCH 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser ` (2 preceding siblings ...) 2023-04-27 18:53 ` [PATCH 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines Martin Kaiser @ 2023-05-19 16:04 ` Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 1/3] hwrng: imx-rngc - simpler check for available random bytes Martin Kaiser ` (3 more replies) 3 siblings, 4 replies; 11+ messages in thread From: Martin Kaiser @ 2023-05-19 16:04 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser This series simplifies some definitions for register bits and fields. We can then use the FIELD_GET macro to read register fields instead of masking and shifting manually. Tested on an imx258 board (rngb). v2: - simpler check if random bytes are available Martin Kaiser (3): hwrng: imx-rngc - simpler check for available random bytes hwrng: imx-rngc - use bitfield macros to read rng type hwrng: imx-rngc - use BIT(x) for register bit defines drivers/char/hw_random/imx-rngc.c | 35 +++++++++++++------------------ 1 file changed, 15 insertions(+), 20 deletions(-) -- 2.30.2 ^ permalink raw reply [flat|nested] 11+ messages in thread
* [PATCH v2 1/3] hwrng: imx-rngc - simpler check for available random bytes 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser @ 2023-05-19 16:04 ` Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 2/3] hwrng: imx-rngc - use bitfield macros to read rng type Martin Kaiser ` (2 subsequent siblings) 3 siblings, 0 replies; 11+ messages in thread From: Martin Kaiser @ 2023-05-19 16:04 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser The "level" field in the status register contains the number of random bytes that are available in the FIFO. Use GENMASK to extract this field. We only want to check if level is 0 or if we can read another byte. There's no need for the shift or the level variable. Signed-off-by: Martin Kaiser <martin@kaiser.cx> --- v2: - remove the shift when checking the fifo level field drivers/char/hw_random/imx-rngc.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index a1c24148ed31..cf29c323453a 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -17,6 +17,7 @@ #include <linux/hw_random.h> #include <linux/completion.h> #include <linux/io.h> +#include <linux/bitfield.h> #define RNGC_VER_ID 0x0000 #define RNGC_COMMAND 0x0004 @@ -44,8 +45,7 @@ #define RNGC_CTRL_AUTO_SEED 0x00000010 #define RNGC_STATUS_ERROR 0x00010000 -#define RNGC_STATUS_FIFO_LEVEL_MASK 0x00000f00 -#define RNGC_STATUS_FIFO_LEVEL_SHIFT 8 +#define RNGC_STATUS_FIFO_LEVEL_MASK GENMASK(11, 8) #define RNGC_STATUS_SEED_DONE 0x00000020 #define RNGC_STATUS_ST_DONE 0x00000010 @@ -122,7 +122,6 @@ static int imx_rngc_read(struct hwrng *rng, void *data, size_t max, bool wait) { struct imx_rngc *rngc = container_of(rng, struct imx_rngc, rng); unsigned int status; - unsigned int level; int retval = 0; while (max >= sizeof(u32)) { @@ -132,11 +131,7 @@ static int imx_rngc_read(struct hwrng *rng, void *data, size_t max, bool wait) if (status & RNGC_STATUS_ERROR) break; - /* how many random numbers are in FIFO? [0-16] */ - level = (status & RNGC_STATUS_FIFO_LEVEL_MASK) >> - RNGC_STATUS_FIFO_LEVEL_SHIFT; - - if (level) { + if (status & RNGC_STATUS_FIFO_LEVEL_MASK) { /* retrieve a random number from FIFO */ *(u32 *)data = readl(rngc->base + RNGC_FIFO); -- 2.30.2 ^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH v2 2/3] hwrng: imx-rngc - use bitfield macros to read rng type 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 1/3] hwrng: imx-rngc - simpler check for available random bytes Martin Kaiser @ 2023-05-19 16:04 ` Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines Martin Kaiser 2023-05-24 10:14 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Herbert Xu 3 siblings, 0 replies; 11+ messages in thread From: Martin Kaiser @ 2023-05-19 16:04 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser 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: Martin Kaiser <martin@kaiser.cx> --- drivers/char/hw_random/imx-rngc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index cf29c323453a..b5f7b91bd13e 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -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.) -- 2.30.2 ^ permalink raw reply related [flat|nested] 11+ messages in thread
* [PATCH v2 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 1/3] hwrng: imx-rngc - simpler check for available random bytes Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 2/3] hwrng: imx-rngc - use bitfield macros to read rng type Martin Kaiser @ 2023-05-19 16:04 ` Martin Kaiser 2023-05-24 10:14 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Herbert Xu 3 siblings, 0 replies; 11+ messages in thread From: Martin Kaiser @ 2023-05-19 16:04 UTC (permalink / raw) To: Herbert Xu; +Cc: linux-crypto, linux-arm-kernel, linux-kernel, Martin Kaiser Rewrite the defines for register bits to use BIT(x) instead of writing out the 32-bit number. This makes it easier to compare the code with the register descriptions in the reference manual. Signed-off-by: Martin Kaiser <martin@kaiser.cx> --- drivers/char/hw_random/imx-rngc.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index b5f7b91bd13e..9c6988c658e2 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -35,19 +35,19 @@ #define RNGC_TYPE_RNGC 0x2 -#define RNGC_CMD_CLR_ERR 0x00000020 -#define RNGC_CMD_CLR_INT 0x00000010 -#define RNGC_CMD_SEED 0x00000002 -#define RNGC_CMD_SELF_TEST 0x00000001 +#define RNGC_CMD_CLR_ERR BIT(5) +#define RNGC_CMD_CLR_INT BIT(4) +#define RNGC_CMD_SEED BIT(1) +#define RNGC_CMD_SELF_TEST BIT(0) -#define RNGC_CTRL_MASK_ERROR 0x00000040 -#define RNGC_CTRL_MASK_DONE 0x00000020 -#define RNGC_CTRL_AUTO_SEED 0x00000010 +#define RNGC_CTRL_MASK_ERROR BIT(6) +#define RNGC_CTRL_MASK_DONE BIT(5) +#define RNGC_CTRL_AUTO_SEED BIT(4) -#define RNGC_STATUS_ERROR 0x00010000 +#define RNGC_STATUS_ERROR BIT(16) #define RNGC_STATUS_FIFO_LEVEL_MASK GENMASK(11, 8) -#define RNGC_STATUS_SEED_DONE 0x00000020 -#define RNGC_STATUS_ST_DONE 0x00000010 +#define RNGC_STATUS_SEED_DONE BIT(5) +#define RNGC_STATUS_ST_DONE BIT(4) #define RNGC_ERROR_STATUS_STAT_ERR 0x00000008 -- 2.30.2 ^ permalink raw reply related [flat|nested] 11+ messages in thread
* Re: [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser ` (2 preceding siblings ...) 2023-05-19 16:04 ` [PATCH v2 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines Martin Kaiser @ 2023-05-24 10:14 ` Herbert Xu 3 siblings, 0 replies; 11+ messages in thread From: Herbert Xu @ 2023-05-24 10:14 UTC (permalink / raw) To: Martin Kaiser; +Cc: linux-crypto, linux-arm-kernel, linux-kernel On Fri, May 19, 2023 at 06:04:30PM +0200, Martin Kaiser wrote: > This series simplifies some definitions for register bits and fields. We can > then use the FIELD_GET macro to read register fields instead of masking and > shifting manually. > > Tested on an imx258 board (rngb). > > v2: > - simpler check if random bytes are available > > Martin Kaiser (3): > hwrng: imx-rngc - simpler check for available random bytes > hwrng: imx-rngc - use bitfield macros to read rng type > hwrng: imx-rngc - use BIT(x) for register bit defines > > drivers/char/hw_random/imx-rngc.c | 35 +++++++++++++------------------ > 1 file changed, 15 insertions(+), 20 deletions(-) > > -- > 2.30.2 All applied. Thanks. -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt ^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2023-05-24 10:15 UTC | newest] Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-04-27 18:53 [PATCH 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 2023-04-27 18:53 ` [PATCH 1/3] hwrng: imx-rngc - use bitfield macros to read fifo level Martin Kaiser 2023-05-11 5:16 ` Herbert Xu 2023-05-11 7:43 ` Martin Kaiser 2023-04-27 18:53 ` [PATCH 2/3] hwrng: imx-rngc - use bitfield macros to read rng type Martin Kaiser 2023-04-27 18:53 ` [PATCH 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 1/3] hwrng: imx-rngc - simpler check for available random bytes Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 2/3] hwrng: imx-rngc - use bitfield macros to read rng type Martin Kaiser 2023-05-19 16:04 ` [PATCH v2 3/3] hwrng: imx-rngc - use BIT(x) for register bit defines Martin Kaiser 2023-05-24 10:14 ` [PATCH v2 0/3] hwrng: imx-rngc - simplify register definitions Herbert Xu
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