layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/804-crypto-0006-crypto-caam-use-devres-to-de-initialize-the-RNG.patch b/target/linux/layerscape/patches-5.4/804-crypto-0006-crypto-caam-use-devres-to-de-initialize-the-RNG.patch
new file mode 100644
index 0000000000..6e3cd24ac0
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/804-crypto-0006-crypto-caam-use-devres-to-de-initialize-the-RNG.patch
@@ -0,0 +1,179 @@
+From 4719469bf1e6d5bac8bb0426be4dd6a124471b69 Mon Sep 17 00:00:00 2001
+From: Andrey Smirnov <andrew.smirnov@gmail.com>
+Date: Tue, 22 Oct 2019 08:30:10 -0700
+Subject: [PATCH] crypto: caam - use devres to de-initialize the RNG
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Use devres to de-initialize the RNG and drop explicit de-initialization
+code in caam_remove().
+
+Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
+Cc: Chris Healy <cphealy@gmail.com>
+Cc: Lucas Stach <l.stach@pengutronix.de>
+Cc: Horia Geantă <horia.geanta@nxp.com>
+Cc: Herbert Xu <herbert@gondor.apana.org.au>
+Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
+Cc: linux-crypto@vger.kernel.org
+Cc: linux-kernel@vger.kernel.org
+Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+(cherry picked from commit e57acaf0dfe0c8f63411d43cf7c689e43f6810c0)
+---
+ drivers/crypto/caam/ctrl.c | 130 ++++++++++++++++++++++++---------------------
+ 1 file changed, 70 insertions(+), 60 deletions(-)
+
+--- a/drivers/crypto/caam/ctrl.c
++++ b/drivers/crypto/caam/ctrl.c
+@@ -176,6 +176,73 @@ static inline int run_descriptor_deco0(s
+ }
+ 
+ /*
++ * deinstantiate_rng - builds and executes a descriptor on DECO0,
++ *		       which deinitializes the RNG block.
++ * @ctrldev - pointer to device
++ * @state_handle_mask - bitmask containing the instantiation status
++ *			for the RNG4 state handles which exist in
++ *			the RNG4 block: 1 if it's been instantiated
++ *
++ * Return: - 0 if no error occurred
++ *	   - -ENOMEM if there isn't enough memory to allocate the descriptor
++ *	   - -ENODEV if DECO0 couldn't be acquired
++ *	   - -EAGAIN if an error occurred when executing the descriptor
++ */
++static int deinstantiate_rng(struct device *ctrldev, int state_handle_mask)
++{
++	u32 *desc, status;
++	int sh_idx, ret = 0;
++
++	desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL);
++	if (!desc)
++		return -ENOMEM;
++
++	for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) {
++		/*
++		 * If the corresponding bit is set, then it means the state
++		 * handle was initialized by us, and thus it needs to be
++		 * deinitialized as well
++		 */
++		if ((1 << sh_idx) & state_handle_mask) {
++			/*
++			 * Create the descriptor for deinstantating this state
++			 * handle
++			 */
++			build_deinstantiation_desc(desc, sh_idx);
++
++			/* Try to run it through DECO0 */
++			ret = run_descriptor_deco0(ctrldev, desc, &status);
++
++			if (ret ||
++			    (status && status != JRSTA_SSRC_JUMP_HALT_CC)) {
++				dev_err(ctrldev,
++					"Failed to deinstantiate RNG4 SH%d\n",
++					sh_idx);
++				break;
++			}
++			dev_info(ctrldev, "Deinstantiated RNG4 SH%d\n", sh_idx);
++		}
++	}
++
++	kfree(desc);
++
++	return ret;
++}
++
++static void devm_deinstantiate_rng(void *data)
++{
++	struct device *ctrldev = data;
++	struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctrldev);
++
++	/*
++	 * De-initialize RNG state handles initialized by this driver.
++	 * In case of SoCs with Management Complex, RNG is managed by MC f/w.
++	 */
++	if (ctrlpriv->rng4_sh_init)
++		deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init);
++}
++
++/*
+  * instantiate_rng - builds and executes a descriptor on DECO0,
+  *		     which initializes the RNG block.
+  * @ctrldev - pointer to device
+@@ -247,59 +314,9 @@ static int instantiate_rng(struct device
+ 
+ 	kfree(desc);
+ 
+-	return ret;
+-}
+-
+-/*
+- * deinstantiate_rng - builds and executes a descriptor on DECO0,
+- *		       which deinitializes the RNG block.
+- * @ctrldev - pointer to device
+- * @state_handle_mask - bitmask containing the instantiation status
+- *			for the RNG4 state handles which exist in
+- *			the RNG4 block: 1 if it's been instantiated
+- *
+- * Return: - 0 if no error occurred
+- *	   - -ENOMEM if there isn't enough memory to allocate the descriptor
+- *	   - -ENODEV if DECO0 couldn't be acquired
+- *	   - -EAGAIN if an error occurred when executing the descriptor
+- */
+-static int deinstantiate_rng(struct device *ctrldev, int state_handle_mask)
+-{
+-	u32 *desc, status;
+-	int sh_idx, ret = 0;
+-
+-	desc = kmalloc(CAAM_CMD_SZ * 3, GFP_KERNEL);
+-	if (!desc)
+-		return -ENOMEM;
+-
+-	for (sh_idx = 0; sh_idx < RNG4_MAX_HANDLES; sh_idx++) {
+-		/*
+-		 * If the corresponding bit is set, then it means the state
+-		 * handle was initialized by us, and thus it needs to be
+-		 * deinitialized as well
+-		 */
+-		if ((1 << sh_idx) & state_handle_mask) {
+-			/*
+-			 * Create the descriptor for deinstantating this state
+-			 * handle
+-			 */
+-			build_deinstantiation_desc(desc, sh_idx);
+-
+-			/* Try to run it through DECO0 */
+-			ret = run_descriptor_deco0(ctrldev, desc, &status);
+-
+-			if (ret ||
+-			    (status && status != JRSTA_SSRC_JUMP_HALT_CC)) {
+-				dev_err(ctrldev,
+-					"Failed to deinstantiate RNG4 SH%d\n",
+-					sh_idx);
+-				break;
+-			}
+-			dev_info(ctrldev, "Deinstantiated RNG4 SH%d\n", sh_idx);
+-		}
+-	}
+-
+-	kfree(desc);
++	if (!ret)
++		ret = devm_add_action_or_reset(ctrldev, devm_deinstantiate_rng,
++					       ctrldev);
+ 
+ 	return ret;
+ }
+@@ -320,13 +337,6 @@ static int caam_remove(struct platform_d
+ 		caam_qi_shutdown(ctrldev);
+ #endif
+ 
+-	/*
+-	 * De-initialize RNG state handles initialized by this driver.
+-	 * In case of SoCs with Management Complex, RNG is managed by MC f/w.
+-	 */
+-	if (!ctrlpriv->mc_en && ctrlpriv->rng4_sh_init)
+-		deinstantiate_rng(ctrldev, ctrlpriv->rng4_sh_init);
+-
+ 	return 0;
+ }
+