lantiq: copy target to kernel 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 122 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-4.19/0018-MTD-nand-lots-of-xrx200-fixes.patch b/target/linux/lantiq/patches-4.19/0018-MTD-nand-lots-of-xrx200-fixes.patch
new file mode 100644
index 0000000000..b97967d20e
--- /dev/null
+++ b/target/linux/lantiq/patches-4.19/0018-MTD-nand-lots-of-xrx200-fixes.patch
@@ -0,0 +1,122 @@
+From 997a8965db8417266bea3fbdcfa3e5655a1b52fa Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Tue, 9 Sep 2014 23:12:15 +0200
+Subject: [PATCH 18/36] MTD: nand: lots of xrx200 fixes
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/mtd/nand/xway_nand.c |   63 ++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 63 insertions(+)
+
+--- a/drivers/mtd/nand/xway_nand.c
++++ b/drivers/mtd/nand/xway_nand.c
+@@ -63,6 +63,24 @@
+ #define NAND_CON_CSMUX		(1 << 1)
+ #define NAND_CON_NANDM		1
+ 
++#define DANUBE_PCI_REG32( addr )    (*(volatile u32 *)(addr))
++#define PCI_CR_PR_OFFSET	    (KSEG1+0x1E105400)
++#define PCI_CR_PC_ARB		    (PCI_CR_PR_OFFSET + 0x0080)
++
++/*
++ * req_mask provides a mechanism to prevent interference between
++ * nand and pci (probably only relevant for the BT Home Hub 2B).
++ * Setting it causes the corresponding pci req pins to be masked
++ * during nand access, and also moves ebu locking from the read/write
++ * functions to the chip select function to ensure that the whole
++ * operation runs with interrupts disabled.
++ * In addition it switches on some extra waiting in xway_cmd_ctrl().
++ * This seems to be necessary if the ebu_cs1 pin has open-drain disabled,
++ * which in turn seems to be necessary for the nor chip to be recognised
++ * reliably, on a board (Home Hub 2B again) which has both nor and nand.
++ */
++static __be32 req_mask = 0;
++
+ struct xway_nand_data {
+ 	struct nand_chip	chip;
+ 	unsigned long		csflags;
+@@ -94,10 +112,22 @@ static void xway_select_chip(struct mtd_
+ 	case -1:
+ 		ltq_ebu_w32_mask(NAND_CON_CE, 0, EBU_NAND_CON);
+ 		ltq_ebu_w32_mask(NAND_CON_NANDM, 0, EBU_NAND_CON);
++
++		if (req_mask) {
++			/* Unmask all external PCI request */
++			DANUBE_PCI_REG32(PCI_CR_PC_ARB) &= ~(req_mask << 16);
++		}
++
+ 		spin_unlock_irqrestore(&ebu_lock, data->csflags);
+ 		break;
+ 	case 0:
+ 		spin_lock_irqsave(&ebu_lock, data->csflags);
++
++		if (req_mask) {
++			/* Mask all external PCI request */
++			DANUBE_PCI_REG32(PCI_CR_PC_ARB) |= (req_mask << 16);
++		}
++
+ 		ltq_ebu_w32_mask(0, NAND_CON_NANDM, EBU_NAND_CON);
+ 		ltq_ebu_w32_mask(0, NAND_CON_CE, EBU_NAND_CON);
+ 		break;
+@@ -108,6 +138,12 @@ static void xway_select_chip(struct mtd_
+ 
+ static void xway_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+ {
++
++	if (req_mask) {
++		if (cmd != NAND_CMD_STATUS)
++			ltq_ebu_w32(0, EBU_NAND_WAIT); /* Clear nand ready */
++	}
++
+ 	if (cmd == NAND_CMD_NONE)
+ 		return;
+ 
+@@ -118,6 +154,24 @@ static void xway_cmd_ctrl(struct mtd_inf
+ 
+ 	while ((ltq_ebu_r32(EBU_NAND_WAIT) & NAND_WAIT_WR_C) == 0)
+ 		;
++
++	if (req_mask) {
++	       /*
++		* program and erase have their own busy handlers
++		* status and sequential in needs no delay
++		*/
++		switch (cmd) {
++			case NAND_CMD_ERASE1:
++			case NAND_CMD_SEQIN:
++			case NAND_CMD_STATUS:
++			case NAND_CMD_READID:
++			return;
++		}
++
++		/* wait until command is processed */
++		while ((ltq_ebu_r32(EBU_NAND_WAIT) & NAND_WAIT_RD) == 0)
++			;
++	}
+ }
+ 
+ static int xway_dev_ready(struct mtd_info *mtd)
+@@ -157,6 +211,7 @@ static int xway_nand_probe(struct platfo
+ 	int err;
+ 	u32 cs;
+ 	u32 cs_flag = 0;
++	const __be32 *req_mask_ptr;
+ 
+ 	/* Allocate memory for the device structure (and zero it) */
+ 	data = devm_kzalloc(&pdev->dev, sizeof(struct xway_nand_data),
+@@ -192,6 +247,15 @@ static int xway_nand_probe(struct platfo
+ 	if (!err && cs == 1)
+ 		cs_flag = NAND_CON_IN_CS1 | NAND_CON_OUT_CS1;
+ 
++	req_mask_ptr = of_get_property(pdev->dev.of_node,
++					"req-mask", NULL);
++
++	/*
++	 * Load the PCI req lines to mask from the device tree. If the
++	 * property is not present, setting req_mask to 0 disables masking.
++	 */
++	req_mask = (req_mask_ptr ? *req_mask_ptr : 0);
++
+ 	/* setup the EBU to run in NAND mode on our base addr */
+ 	ltq_ebu_w32(CPHYSADDR(data->nandaddr)
+ 		    | ADDSEL1_MASK(3) | ADDSEL1_REGEN, EBU_ADDSEL1);