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authorLinus Torvalds <torvalds@linux-foundation.org>2024-11-19 19:28:41 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2024-11-19 19:28:41 +0100
commit02b2f1a7b8ef340e57cae640a52ec7199b0b887d (patch)
tree5f988798262afdeda17dc8f0cd6882d30621de5d /drivers/char
parentMerge tag 'chrome-platform-firmware-for-6.13' of git://git.kernel.org/pub/scm... (diff)
parentcrypto: marvell/cesa - fix uninit value for struct mv_cesa_op_ctx (diff)
downloadlinux-02b2f1a7b8ef340e57cae640a52ec7199b0b887d.tar.xz
linux-02b2f1a7b8ef340e57cae640a52ec7199b0b887d.zip
Merge tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu: "API: - Add sig driver API - Remove signing/verification from akcipher API - Move crypto_simd_disabled_for_test to lib/crypto - Add WARN_ON for return values from driver that indicates memory corruption Algorithms: - Provide crc32-arch and crc32c-arch through Crypto API - Optimise crc32c code size on x86 - Optimise crct10dif on arm/arm64 - Optimise p10-aes-gcm on powerpc - Optimise aegis128 on x86 - Output full sample from test interface in jitter RNG - Retry without padata when it fails in pcrypt Drivers: - Add support for Airoha EN7581 TRNG - Add support for STM32MP25x platforms in stm32 - Enable iproc-r200 RNG driver on BCMBCA - Add Broadcom BCM74110 RNG driver" * tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (112 commits) crypto: marvell/cesa - fix uninit value for struct mv_cesa_op_ctx crypto: cavium - Fix an error handling path in cpt_ucode_load_fw() crypto: aesni - Move back to module_init crypto: lib/mpi - Export mpi_set_bit crypto: aes-gcm-p10 - Use the correct bit to test for P10 hwrng: amd - remove reference to removed PPC_MAPLE config crypto: arm/crct10dif - Implement plain NEON variant crypto: arm/crct10dif - Macroify PMULL asm code crypto: arm/crct10dif - Use existing mov_l macro instead of __adrl crypto: arm64/crct10dif - Remove remaining 64x64 PMULL fallback code crypto: arm64/crct10dif - Use faster 16x64 bit polynomial multiply crypto: arm64/crct10dif - Remove obsolete chunking logic crypto: bcm - add error check in the ahash_hmac_init function crypto: caam - add error check to caam_rsa_set_priv_key_form hwrng: bcm74110 - Add Broadcom BCM74110 RNG driver dt-bindings: rng: add binding for BCM74110 RNG padata: Clean up in padata_do_multithreaded() crypto: inside-secure - Fix the return value of safexcel_xcbcmac_cra_init() crypto: qat - Fix missing destroy_workqueue in adf_init_aer() crypto: rsassa-pkcs1 - Reinstate support for legacy protocols ...
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/Kconfig30
-rw-r--r--drivers/char/hw_random/Makefile2
-rw-r--r--drivers/char/hw_random/airoha-trng.c243
-rw-r--r--drivers/char/hw_random/atmel-rng.c2
-rw-r--r--drivers/char/hw_random/bcm74110-rng.c125
-rw-r--r--drivers/char/hw_random/cctrng.c2
-rw-r--r--drivers/char/hw_random/core.c11
-rw-r--r--drivers/char/hw_random/exynos-trng.c2
-rw-r--r--drivers/char/hw_random/histb-rng.c2
-rw-r--r--drivers/char/hw_random/ingenic-rng.c2
-rw-r--r--drivers/char/hw_random/ks-sa-rng.c2
-rw-r--r--drivers/char/hw_random/mxc-rnga.c2
-rw-r--r--drivers/char/hw_random/n2-drv.c2
-rw-r--r--drivers/char/hw_random/npcm-rng.c2
-rw-r--r--drivers/char/hw_random/omap-rng.c2
-rw-r--r--drivers/char/hw_random/stm32-rng.c78
-rw-r--r--drivers/char/hw_random/timeriomem-rng.c2
-rw-r--r--drivers/char/hw_random/xgene-rng.c2
18 files changed, 477 insertions, 36 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index b51d9e243f35..17854f052386 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -50,7 +50,7 @@ config HW_RANDOM_INTEL
config HW_RANDOM_AMD
tristate "AMD HW Random Number Generator support"
- depends on (X86 || PPC_MAPLE || COMPILE_TEST)
+ depends on (X86 || COMPILE_TEST)
depends on PCI && HAS_IOPORT_MAP
default HW_RANDOM
help
@@ -62,6 +62,19 @@ config HW_RANDOM_AMD
If unsure, say Y.
+config HW_RANDOM_AIROHA
+ tristate "Airoha True HW Random Number Generator support"
+ depends on ARCH_AIROHA || COMPILE_TEST
+ default HW_RANDOM
+ help
+ This driver provides kernel-side support for the True Random Number
+ Generator hardware found on Airoha SoC.
+
+ To compile this driver as a module, choose M here: the
+ module will be called airoha-rng.
+
+ If unsure, say Y.
+
config HW_RANDOM_ATMEL
tristate "Atmel Random Number Generator support"
depends on (ARCH_AT91 || COMPILE_TEST)
@@ -99,9 +112,22 @@ config HW_RANDOM_BCM2835
If unsure, say Y.
+config HW_RANDOM_BCM74110
+ tristate "Broadcom BCM74110 Random Number Generator support"
+ depends on ARCH_BRCMSTB || COMPILE_TEST
+ default HW_RANDOM
+ help
+ This driver provides kernel-side support for the Random Number
+ Generator hardware found on the Broadcom BCM74110 SoCs.
+
+ To compile this driver as a module, choose M here: the
+ module will be called bcm74110-rng
+
+ If unsure, say Y.
+
config HW_RANDOM_IPROC_RNG200
tristate "Broadcom iProc/STB RNG200 support"
- depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
+ depends on ARCH_BCM_IPROC || ARCH_BCM2835 || ARCH_BCMBCA || ARCH_BRCMSTB || COMPILE_TEST
default HW_RANDOM
help
This driver provides kernel-side support for the RNG200
diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile
index 01f012eab440..b9132b3f5d21 100644
--- a/drivers/char/hw_random/Makefile
+++ b/drivers/char/hw_random/Makefile
@@ -8,6 +8,7 @@ rng-core-y := core.o
obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o
obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o
obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o
+obj-$(CONFIG_HW_RANDOM_AIROHA) += airoha-trng.o
obj-$(CONFIG_HW_RANDOM_ATMEL) += atmel-rng.o
obj-$(CONFIG_HW_RANDOM_BA431) += ba431-rng.o
obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o
@@ -31,6 +32,7 @@ obj-$(CONFIG_HW_RANDOM_POWERNV) += powernv-rng.o
obj-$(CONFIG_HW_RANDOM_HISI) += hisi-rng.o
obj-$(CONFIG_HW_RANDOM_HISTB) += histb-rng.o
obj-$(CONFIG_HW_RANDOM_BCM2835) += bcm2835-rng.o
+obj-$(CONFIG_HW_RANDOM_BCM74110) += bcm74110-rng.o
obj-$(CONFIG_HW_RANDOM_IPROC_RNG200) += iproc-rng200.o
obj-$(CONFIG_HW_RANDOM_ST) += st-rng.o
obj-$(CONFIG_HW_RANDOM_XGENE) += xgene-rng.o
diff --git a/drivers/char/hw_random/airoha-trng.c b/drivers/char/hw_random/airoha-trng.c
new file mode 100644
index 000000000000..1dbfa9505c21
--- /dev/null
+++ b/drivers/char/hw_random/airoha-trng.c
@@ -0,0 +1,243 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2024 Christian Marangi */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/hw_random.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/platform_device.h>
+
+#define TRNG_IP_RDY 0x800
+#define CNT_TRANS GENMASK(15, 8)
+#define SAMPLE_RDY BIT(0)
+#define TRNG_NS_SEK_AND_DAT_EN 0x804
+#define RNG_EN BIT(31) /* referenced as ring_en */
+#define RAW_DATA_EN BIT(16)
+#define TRNG_HEALTH_TEST_SW_RST 0x808
+#define SW_RST BIT(0) /* Active High */
+#define TRNG_INTR_EN 0x818
+#define INTR_MASK BIT(16)
+#define CONTINUOUS_HEALTH_INITR_EN BIT(2)
+#define SW_STARTUP_INITR_EN BIT(1)
+#define RST_STARTUP_INITR_EN BIT(0)
+/* Notice that Health Test are done only out of Reset and with RNG_EN */
+#define TRNG_HEALTH_TEST_STATUS 0x824
+#define CONTINUOUS_HEALTH_AP_TEST_FAIL BIT(23)
+#define CONTINUOUS_HEALTH_RC_TEST_FAIL BIT(22)
+#define SW_STARTUP_TEST_DONE BIT(21)
+#define SW_STARTUP_AP_TEST_FAIL BIT(20)
+#define SW_STARTUP_RC_TEST_FAIL BIT(19)
+#define RST_STARTUP_TEST_DONE BIT(18)
+#define RST_STARTUP_AP_TEST_FAIL BIT(17)
+#define RST_STARTUP_RC_TEST_FAIL BIT(16)
+#define RAW_DATA_VALID BIT(7)
+
+#define TRNG_RAW_DATA_OUT 0x828
+
+#define TRNG_CNT_TRANS_VALID 0x80
+#define BUSY_LOOP_SLEEP 10
+#define BUSY_LOOP_TIMEOUT (BUSY_LOOP_SLEEP * 10000)
+
+struct airoha_trng {
+ void __iomem *base;
+ struct hwrng rng;
+ struct device *dev;
+
+ struct completion rng_op_done;
+};
+
+static int airoha_trng_irq_mask(struct airoha_trng *trng)
+{
+ u32 val;
+
+ val = readl(trng->base + TRNG_INTR_EN);
+ val |= INTR_MASK;
+ writel(val, trng->base + TRNG_INTR_EN);
+
+ return 0;
+}
+
+static int airoha_trng_irq_unmask(struct airoha_trng *trng)
+{
+ u32 val;
+
+ val = readl(trng->base + TRNG_INTR_EN);
+ val &= ~INTR_MASK;
+ writel(val, trng->base + TRNG_INTR_EN);
+
+ return 0;
+}
+
+static int airoha_trng_init(struct hwrng *rng)
+{
+ struct airoha_trng *trng = container_of(rng, struct airoha_trng, rng);
+ int ret;
+ u32 val;
+
+ val = readl(trng->base + TRNG_NS_SEK_AND_DAT_EN);
+ val |= RNG_EN;
+ writel(val, trng->base + TRNG_NS_SEK_AND_DAT_EN);
+
+ /* Set out of SW Reset */
+ airoha_trng_irq_unmask(trng);
+ writel(0, trng->base + TRNG_HEALTH_TEST_SW_RST);
+
+ ret = wait_for_completion_timeout(&trng->rng_op_done, BUSY_LOOP_TIMEOUT);
+ if (ret <= 0) {
+ dev_err(trng->dev, "Timeout waiting for Health Check\n");
+ airoha_trng_irq_mask(trng);
+ return -ENODEV;
+ }
+
+ /* Check if Health Test Failed */
+ val = readl(trng->base + TRNG_HEALTH_TEST_STATUS);
+ if (val & (RST_STARTUP_AP_TEST_FAIL | RST_STARTUP_RC_TEST_FAIL)) {
+ dev_err(trng->dev, "Health Check fail: %s test fail\n",
+ val & RST_STARTUP_AP_TEST_FAIL ? "AP" : "RC");
+ return -ENODEV;
+ }
+
+ /* Check if IP is ready */
+ ret = readl_poll_timeout(trng->base + TRNG_IP_RDY, val,
+ val & SAMPLE_RDY, 10, 1000);
+ if (ret < 0) {
+ dev_err(trng->dev, "Timeout waiting for IP ready");
+ return -ENODEV;
+ }
+
+ /* CNT_TRANS must be 0x80 for IP to be considered ready */
+ ret = readl_poll_timeout(trng->base + TRNG_IP_RDY, val,
+ FIELD_GET(CNT_TRANS, val) == TRNG_CNT_TRANS_VALID,
+ 10, 1000);
+ if (ret < 0) {
+ dev_err(trng->dev, "Timeout waiting for IP ready");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void airoha_trng_cleanup(struct hwrng *rng)
+{
+ struct airoha_trng *trng = container_of(rng, struct airoha_trng, rng);
+ u32 val;
+
+ val = readl(trng->base + TRNG_NS_SEK_AND_DAT_EN);
+ val &= ~RNG_EN;
+ writel(val, trng->base + TRNG_NS_SEK_AND_DAT_EN);
+
+ /* Put it in SW Reset */
+ writel(SW_RST, trng->base + TRNG_HEALTH_TEST_SW_RST);
+}
+
+static int airoha_trng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
+{
+ struct airoha_trng *trng = container_of(rng, struct airoha_trng, rng);
+ u32 *data = buf;
+ u32 status;
+ int ret;
+
+ ret = readl_poll_timeout(trng->base + TRNG_HEALTH_TEST_STATUS, status,
+ status & RAW_DATA_VALID, 10, 1000);
+ if (ret < 0) {
+ dev_err(trng->dev, "Timeout waiting for TRNG RAW Data valid\n");
+ return ret;
+ }
+
+ *data = readl(trng->base + TRNG_RAW_DATA_OUT);
+
+ return 4;
+}
+
+static irqreturn_t airoha_trng_irq(int irq, void *priv)
+{
+ struct airoha_trng *trng = (struct airoha_trng *)priv;
+
+ airoha_trng_irq_mask(trng);
+ /* Just complete the task, we will read the value later */
+ complete(&trng->rng_op_done);
+
+ return IRQ_HANDLED;
+}
+
+static int airoha_trng_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct airoha_trng *trng;
+ int irq, ret;
+ u32 val;
+
+ trng = devm_kzalloc(dev, sizeof(*trng), GFP_KERNEL);
+ if (!trng)
+ return -ENOMEM;
+
+ trng->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(trng->base))
+ return PTR_ERR(trng->base);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ airoha_trng_irq_mask(trng);
+ ret = devm_request_irq(&pdev->dev, irq, airoha_trng_irq, 0,
+ pdev->name, (void *)trng);
+ if (ret) {
+ dev_err(dev, "Can't get interrupt working.\n");
+ return ret;
+ }
+
+ init_completion(&trng->rng_op_done);
+
+ /* Enable interrupt for SW reset Health Check */
+ val = readl(trng->base + TRNG_INTR_EN);
+ val |= RST_STARTUP_INITR_EN;
+ writel(val, trng->base + TRNG_INTR_EN);
+
+ /* Set output to raw data */
+ val = readl(trng->base + TRNG_NS_SEK_AND_DAT_EN);
+ val |= RAW_DATA_EN;
+ writel(val, trng->base + TRNG_NS_SEK_AND_DAT_EN);
+
+ /* Put it in SW Reset */
+ writel(SW_RST, trng->base + TRNG_HEALTH_TEST_SW_RST);
+
+ trng->dev = dev;
+ trng->rng.name = pdev->name;
+ trng->rng.init = airoha_trng_init;
+ trng->rng.cleanup = airoha_trng_cleanup;
+ trng->rng.read = airoha_trng_read;
+
+ ret = devm_hwrng_register(dev, &trng->rng);
+ if (ret) {
+ dev_err(dev, "failed to register rng device: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id airoha_trng_of_match[] = {
+ { .compatible = "airoha,en7581-trng", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, airoha_trng_of_match);
+
+static struct platform_driver airoha_trng_driver = {
+ .driver = {
+ .name = "airoha-trng",
+ .of_match_table = airoha_trng_of_match,
+ },
+ .probe = airoha_trng_probe,
+};
+
+module_platform_driver(airoha_trng_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Marangi <ansuelsmth@gmail.com>");
+MODULE_DESCRIPTION("Airoha True Random Number Generator driver");
diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c
index e9157255f851..143406bc6939 100644
--- a/drivers/char/hw_random/atmel-rng.c
+++ b/drivers/char/hw_random/atmel-rng.c
@@ -216,7 +216,7 @@ MODULE_DEVICE_TABLE(of, atmel_trng_dt_ids);
static struct platform_driver atmel_trng_driver = {
.probe = atmel_trng_probe,
- .remove_new = atmel_trng_remove,
+ .remove = atmel_trng_remove,
.driver = {
.name = "atmel-trng",
.pm = pm_ptr(&atmel_trng_pm_ops),
diff --git a/drivers/char/hw_random/bcm74110-rng.c b/drivers/char/hw_random/bcm74110-rng.c
new file mode 100644
index 000000000000..5c64148e91f1
--- /dev/null
+++ b/drivers/char/hw_random/bcm74110-rng.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2024 Broadcom
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/random.h>
+#include <linux/hw_random.h>
+
+#define HOST_REV_ID 0x00
+#define HOST_FIFO_DEPTH 0x04
+#define HOST_FIFO_COUNT 0x08
+#define HOST_FIFO_THRESHOLD 0x0c
+#define HOST_FIFO_DATA 0x10
+
+#define HOST_FIFO_COUNT_MASK 0xffff
+
+/* Delay range in microseconds */
+#define FIFO_DELAY_MIN_US 3
+#define FIFO_DELAY_MAX_US 7
+#define FIFO_DELAY_MAX_COUNT 10
+
+struct bcm74110_priv {
+ void __iomem *base;
+};
+
+static inline int bcm74110_rng_fifo_count(void __iomem *mem)
+{
+ return readl_relaxed(mem) & HOST_FIFO_COUNT_MASK;
+}
+
+static int bcm74110_rng_read(struct hwrng *rng, void *buf, size_t max,
+ bool wait)
+{
+ struct bcm74110_priv *priv = (struct bcm74110_priv *)rng->priv;
+ void __iomem *fc_addr = priv->base + HOST_FIFO_COUNT;
+ void __iomem *fd_addr = priv->base + HOST_FIFO_DATA;
+ unsigned underrun_count = 0;
+ u32 max_words = max / sizeof(u32);
+ u32 num_words;
+ unsigned i;
+
+ /*
+ * We need to check how many words are available in the RNG FIFO. If
+ * there aren't any, we need to wait for some to become available.
+ */
+ while ((num_words = bcm74110_rng_fifo_count(fc_addr)) == 0) {
+ if (!wait)
+ return 0;
+ /*
+ * As a precaution, limit how long we wait. If the FIFO doesn't
+ * refill within the allotted time, return 0 (=no data) to the
+ * caller.
+ */
+ if (likely(underrun_count < FIFO_DELAY_MAX_COUNT))
+ usleep_range(FIFO_DELAY_MIN_US, FIFO_DELAY_MAX_US);
+ else
+ return 0;
+ underrun_count++;
+ }
+ if (num_words > max_words)
+ num_words = max_words;
+
+ /* Bail early if we run out of random numbers unexpectedly */
+ for (i = 0; i < num_words && bcm74110_rng_fifo_count(fc_addr) > 0; i++)
+ ((u32 *)buf)[i] = readl_relaxed(fd_addr);
+
+ return i * sizeof(u32);
+}
+
+static struct hwrng bcm74110_hwrng = {
+ .read = bcm74110_rng_read,
+};
+
+static int bcm74110_rng_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct bcm74110_priv *priv;
+ int rc;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ bcm74110_hwrng.name = pdev->name;
+ bcm74110_hwrng.priv = (unsigned long)priv;
+
+ priv->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ rc = devm_hwrng_register(dev, &bcm74110_hwrng);
+ if (rc)
+ dev_err(dev, "hwrng registration failed (%d)\n", rc);
+ else
+ dev_info(dev, "hwrng registered\n");
+
+ return rc;
+}
+
+static const struct of_device_id bcm74110_rng_match[] = {
+ { .compatible = "brcm,bcm74110-rng", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bcm74110_rng_match);
+
+static struct platform_driver bcm74110_rng_driver = {
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .of_match_table = bcm74110_rng_match,
+ },
+ .probe = bcm74110_rng_probe,
+};
+module_platform_driver(bcm74110_rng_driver);
+
+MODULE_AUTHOR("Markus Mayer <mmayer@broadcom.com>");
+MODULE_DESCRIPTION("BCM 74110 Random Number Generator (RNG) driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/char/hw_random/cctrng.c b/drivers/char/hw_random/cctrng.c
index 4c50efc46483..4db198849695 100644
--- a/drivers/char/hw_random/cctrng.c
+++ b/drivers/char/hw_random/cctrng.c
@@ -653,7 +653,7 @@ static struct platform_driver cctrng_driver = {
.pm = &cctrng_pm,
},
.probe = cctrng_probe,
- .remove_new = cctrng_remove,
+ .remove = cctrng_remove,
};
module_platform_driver(cctrng_driver);
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 57c51efa5613..018316f54621 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -181,8 +181,15 @@ static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size,
int present;
BUG_ON(!mutex_is_locked(&reading_mutex));
- if (rng->read)
- return rng->read(rng, (void *)buffer, size, wait);
+ if (rng->read) {
+ int err;
+
+ err = rng->read(rng, buffer, size, wait);
+ if (WARN_ON_ONCE(err > 0 && err > size))
+ err = size;
+
+ return err;
+ }
if (rng->data_present)
present = rng->data_present(rng, wait);
diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c
index 9f039fddaee3..02e207c09e81 100644
--- a/drivers/char/hw_random/exynos-trng.c
+++ b/drivers/char/hw_random/exynos-trng.c
@@ -335,7 +335,7 @@ static struct platform_driver exynos_trng_driver = {
.of_match_table = exynos_trng_dt_match,
},
.probe = exynos_trng_probe,
- .remove_new = exynos_trng_remove,
+ .remove = exynos_trng_remove,
};
module_platform_driver(exynos_trng_driver);
diff --git a/drivers/char/hw_random/histb-rng.c b/drivers/char/hw_random/histb-rng.c
index f652e1135e4b..1b91e88cc4c0 100644
--- a/drivers/char/hw_random/histb-rng.c
+++ b/drivers/char/hw_random/histb-rng.c
@@ -89,7 +89,7 @@ depth_show(struct device *dev, struct device_attribute *attr, char *buf)
struct histb_rng_priv *priv = dev_get_drvdata(dev);
void __iomem *base = priv->base;
- return sprintf(buf, "%d\n", histb_rng_get_depth(base));
+ return sprintf(buf, "%u\n", histb_rng_get_depth(base));
}
static ssize_t
diff --git a/drivers/char/hw_random/ingenic-rng.c b/drivers/char/hw_random/ingenic-rng.c
index 2f9b6483c4a1..bbfd662d25a6 100644
--- a/drivers/char/hw_random/ingenic-rng.c
+++ b/drivers/char/hw_random/ingenic-rng.c
@@ -132,7 +132,7 @@ MODULE_DEVICE_TABLE(of, ingenic_rng_of_match);
static struct platform_driver ingenic_rng_driver = {
.probe = ingenic_rng_probe,
- .remove_new = ingenic_rng_remove,
+ .remove = ingenic_rng_remove,
.driver = {
.name = "ingenic-rng",
.of_match_table = ingenic_rng_of_match,
diff --git a/drivers/char/hw_random/ks-sa-rng.c b/drivers/char/hw_random/ks-sa-rng.c
index 36c34252b4f6..d8fd8a354482 100644
--- a/drivers/char/hw_random/ks-sa-rng.c
+++ b/drivers/char/hw_random/ks-sa-rng.c
@@ -261,7 +261,7 @@ static struct platform_driver ks_sa_rng_driver = {
.of_match_table = ks_sa_rng_dt_match,
},
.probe = ks_sa_rng_probe,
- .remove_new = ks_sa_rng_remove,
+ .remove = ks_sa_rng_remove,
};
module_platform_driver(ks_sa_rng_driver);
diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
index f01eb95bee31..e3fcb8bcc29b 100644
--- a/drivers/char/hw_random/mxc-rnga.c
+++ b/drivers/char/hw_random/mxc-rnga.c
@@ -188,7 +188,7 @@ static struct platform_driver mxc_rnga_driver = {
.of_match_table = mxc_rnga_of_match,
},
.probe = mxc_rnga_probe,
- .remove_new = mxc_rnga_remove,
+ .remove = mxc_rnga_remove,
};
module_platform_driver(mxc_rnga_driver);
diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c
index 1b49e3a86d57..ea6d5599242f 100644
--- a/drivers/char/hw_random/n2-drv.c
+++ b/drivers/char/hw_random/n2-drv.c
@@ -858,7 +858,7 @@ static struct platform_driver n2rng_driver = {
.of_match_table = n2rng_match,
},
.probe = n2rng_probe,
- .remove_new = n2rng_remove,
+ .remove = n2rng_remove,
};
module_platform_driver(n2rng_driver);
diff --git a/drivers/char/hw_random/npcm-rng.c b/drivers/char/hw_random/npcm-rng.c
index bce8c4829a1f..9ff00f096f38 100644
--- a/drivers/char/hw_random/npcm-rng.c
+++ b/drivers/char/hw_random/npcm-rng.c
@@ -176,7 +176,7 @@ static struct platform_driver npcm_rng_driver = {
.of_match_table = of_match_ptr(rng_dt_id),
},
.probe = npcm_rng_probe,
- .remove_new = npcm_rng_remove,
+ .remove = npcm_rng_remove,
};
module_platform_driver(npcm_rng_driver);
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 4914a8720e58..5e8b50f15db7 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -558,7 +558,7 @@ static struct platform_driver omap_rng_driver = {
.of_match_table = of_match_ptr(omap_rng_of_match),
},
.probe = omap_rng_probe,
- .remove_new = omap_rng_remove,
+ .remove = omap_rng_remove,
};
module_platform_driver(omap_rng_driver);
diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
index 9d041a67c295..98edbe796bc5 100644
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -4,6 +4,7 @@
*/
#include <linux/clk.h>
+#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/hw_random.h>
#include <linux/io.h>
@@ -49,6 +50,7 @@
struct stm32_rng_data {
uint max_clock_rate;
+ uint nb_clock;
u32 cr;
u32 nscr;
u32 htcr;
@@ -72,7 +74,7 @@ struct stm32_rng_private {
struct hwrng rng;
struct device *dev;
void __iomem *base;
- struct clk *clk;
+ struct clk_bulk_data *clk_bulk;
struct reset_control *rst;
struct stm32_rng_config pm_conf;
const struct stm32_rng_data *data;
@@ -266,7 +268,7 @@ static uint stm32_rng_clock_freq_restrain(struct hwrng *rng)
unsigned long clock_rate = 0;
uint clock_div = 0;
- clock_rate = clk_get_rate(priv->clk);
+ clock_rate = clk_get_rate(priv->clk_bulk[0].clk);
/*
* Get the exponent to apply on the CLKDIV field in RNG_CR register
@@ -276,7 +278,7 @@ static uint stm32_rng_clock_freq_restrain(struct hwrng *rng)
while ((clock_rate >> clock_div) > priv->data->max_clock_rate)
clock_div++;
- pr_debug("RNG clk rate : %lu\n", clk_get_rate(priv->clk) >> clock_div);
+ pr_debug("RNG clk rate : %lu\n", clk_get_rate(priv->clk_bulk[0].clk) >> clock_div);
return clock_div;
}
@@ -288,7 +290,7 @@ static int stm32_rng_init(struct hwrng *rng)
int err;
u32 reg;
- err = clk_prepare_enable(priv->clk);
+ err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk);
if (err)
return err;
@@ -328,7 +330,7 @@ static int stm32_rng_init(struct hwrng *rng)
(!(reg & RNG_CR_CONDRST)),
10, 50000);
if (err) {
- clk_disable_unprepare(priv->clk);
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
dev_err(priv->dev, "%s: timeout %x!\n", __func__, reg);
return -EINVAL;
}
@@ -356,12 +358,13 @@ static int stm32_rng_init(struct hwrng *rng)
reg & RNG_SR_DRDY,
10, 100000);
if (err || (reg & ~RNG_SR_DRDY)) {
- clk_disable_unprepare(priv->clk);
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
dev_err(priv->dev, "%s: timeout:%x SR: %x!\n", __func__, err, reg);
+
return -EINVAL;
}
- clk_disable_unprepare(priv->clk);
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
return 0;
}
@@ -379,7 +382,8 @@ static int __maybe_unused stm32_rng_runtime_suspend(struct device *dev)
reg = readl_relaxed(priv->base + RNG_CR);
reg &= ~RNG_CR_RNGEN;
writel_relaxed(reg, priv->base + RNG_CR);
- clk_disable_unprepare(priv->clk);
+
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
return 0;
}
@@ -389,7 +393,7 @@ static int __maybe_unused stm32_rng_suspend(struct device *dev)
struct stm32_rng_private *priv = dev_get_drvdata(dev);
int err;
- err = clk_prepare_enable(priv->clk);
+ err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk);
if (err)
return err;
@@ -403,7 +407,7 @@ static int __maybe_unused stm32_rng_suspend(struct device *dev)
writel_relaxed(priv->pm_conf.cr, priv->base + RNG_CR);
- clk_disable_unprepare(priv->clk);
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
return 0;
}
@@ -414,7 +418,7 @@ static int __maybe_unused stm32_rng_runtime_resume(struct device *dev)
int err;
u32 reg;
- err = clk_prepare_enable(priv->clk);
+ err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk);
if (err)
return err;
@@ -434,7 +438,7 @@ static int __maybe_unused stm32_rng_resume(struct device *dev)
int err;
u32 reg;
- err = clk_prepare_enable(priv->clk);
+ err = clk_bulk_prepare_enable(priv->data->nb_clock, priv->clk_bulk);
if (err)
return err;
@@ -462,7 +466,7 @@ static int __maybe_unused stm32_rng_resume(struct device *dev)
reg & ~RNG_CR_CONDRST, 10, 100000);
if (err) {
- clk_disable_unprepare(priv->clk);
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
dev_err(priv->dev, "%s: timeout:%x CR: %x!\n", __func__, err, reg);
return -EINVAL;
}
@@ -472,7 +476,7 @@ static int __maybe_unused stm32_rng_resume(struct device *dev)
writel_relaxed(reg, priv->base + RNG_CR);
}
- clk_disable_unprepare(priv->clk);
+ clk_bulk_disable_unprepare(priv->data->nb_clock, priv->clk_bulk);
return 0;
}
@@ -484,9 +488,19 @@ static const struct dev_pm_ops __maybe_unused stm32_rng_pm_ops = {
stm32_rng_resume)
};
+static const struct stm32_rng_data stm32mp25_rng_data = {
+ .has_cond_reset = true,
+ .max_clock_rate = 48000000,
+ .nb_clock = 2,
+ .cr = 0x00F00D00,
+ .nscr = 0x2B5BB,
+ .htcr = 0x969D,
+};
+
static const struct stm32_rng_data stm32mp13_rng_data = {
.has_cond_reset = true,
.max_clock_rate = 48000000,
+ .nb_clock = 1,
.cr = 0x00F00D00,
.nscr = 0x2B5BB,
.htcr = 0x969D,
@@ -494,11 +508,16 @@ static const struct stm32_rng_data stm32mp13_rng_data = {
static const struct stm32_rng_data stm32_rng_data = {
.has_cond_reset = false,
- .max_clock_rate = 3000000,
+ .max_clock_rate = 48000000,
+ .nb_clock = 1,
};
static const struct of_device_id stm32_rng_match[] = {
{
+ .compatible = "st,stm32mp25-rng",
+ .data = &stm32mp25_rng_data,
+ },
+ {
.compatible = "st,stm32mp13-rng",
.data = &stm32mp13_rng_data,
},
@@ -516,6 +535,7 @@ static int stm32_rng_probe(struct platform_device *ofdev)
struct device_node *np = ofdev->dev.of_node;
struct stm32_rng_private *priv;
struct resource *res;
+ int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -525,10 +545,6 @@ static int stm32_rng_probe(struct platform_device *ofdev)
if (IS_ERR(priv->base))
return PTR_ERR(priv->base);
- priv->clk = devm_clk_get(&ofdev->dev, NULL);
- if (IS_ERR(priv->clk))
- return PTR_ERR(priv->clk);
-
priv->rst = devm_reset_control_get(&ofdev->dev, NULL);
if (!IS_ERR(priv->rst)) {
reset_control_assert(priv->rst);
@@ -551,6 +567,28 @@ static int stm32_rng_probe(struct platform_device *ofdev)
priv->rng.read = stm32_rng_read;
priv->rng.quality = 900;
+ if (!priv->data->nb_clock || priv->data->nb_clock > 2)
+ return -EINVAL;
+
+ ret = devm_clk_bulk_get_all(dev, &priv->clk_bulk);
+ if (ret != priv->data->nb_clock)
+ return dev_err_probe(dev, -EINVAL, "Failed to get clocks: %d\n", ret);
+
+ if (priv->data->nb_clock == 2) {
+ const char *id = priv->clk_bulk[1].id;
+ struct clk *clk = priv->clk_bulk[1].clk;
+
+ if (!priv->clk_bulk[0].id || !priv->clk_bulk[1].id)
+ return dev_err_probe(dev, -EINVAL, "Missing clock name\n");
+
+ if (strcmp(priv->clk_bulk[0].id, "core")) {
+ priv->clk_bulk[1].id = priv->clk_bulk[0].id;
+ priv->clk_bulk[1].clk = priv->clk_bulk[0].clk;
+ priv->clk_bulk[0].id = id;
+ priv->clk_bulk[0].clk = clk;
+ }
+ }
+
pm_runtime_set_autosuspend_delay(dev, 100);
pm_runtime_use_autosuspend(dev);
pm_runtime_enable(dev);
@@ -565,7 +603,7 @@ static struct platform_driver stm32_rng_driver = {
.of_match_table = stm32_rng_match,
},
.probe = stm32_rng_probe,
- .remove_new = stm32_rng_remove,
+ .remove = stm32_rng_remove,
};
module_platform_driver(stm32_rng_driver);
diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c
index 65b8260339f5..7174bfccc7b3 100644
--- a/drivers/char/hw_random/timeriomem-rng.c
+++ b/drivers/char/hw_random/timeriomem-rng.c
@@ -193,7 +193,7 @@ static struct platform_driver timeriomem_rng_driver = {
.of_match_table = timeriomem_rng_match,
},
.probe = timeriomem_rng_probe,
- .remove_new = timeriomem_rng_remove,
+ .remove = timeriomem_rng_remove,
};
module_platform_driver(timeriomem_rng_driver);
diff --git a/drivers/char/hw_random/xgene-rng.c b/drivers/char/hw_random/xgene-rng.c
index 642d13519464..39acaa503fec 100644
--- a/drivers/char/hw_random/xgene-rng.c
+++ b/drivers/char/hw_random/xgene-rng.c
@@ -375,7 +375,7 @@ MODULE_DEVICE_TABLE(of, xgene_rng_of_match);
static struct platform_driver xgene_rng_driver = {
.probe = xgene_rng_probe,
- .remove_new = xgene_rng_remove,
+ .remove = xgene_rng_remove,
.driver = {
.name = "xgene-rng",
.of_match_table = xgene_rng_of_match,