X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;ds=sidebyside;f=target%2Flinux%2Flantiq%2Fpatches-4.19%2F0018-MTD-nand-lots-of-xrx200-fixes.patch;fp=target%2Flinux%2Flantiq%2Fpatches-4.19%2F0018-MTD-nand-lots-of-xrx200-fixes.patch;h=0000000000000000000000000000000000000000;hb=21cf17bb4ce5cb0cacb15d3659a544c215590001;hp=4e34580efcb79cac86b70ab8027e89cf11525990;hpb=f47cb405cafd57a25fceb7630af969e08b2f671c;p=openwrt%2Fopenwrt.git

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
deleted file mode 100644
index 4e34580efc..0000000000
--- a/target/linux/lantiq/patches-4.19/0018-MTD-nand-lots-of-xrx200-fixes.patch
+++ /dev/null
@@ -1,122 +0,0 @@
-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/raw/xway_nand.c |   63 ++++++++++++++++++++++++++++++++++++++++++
- 1 file changed, 63 insertions(+)
-
---- a/drivers/mtd/nand/raw/xway_nand.c
-+++ b/drivers/mtd/nand/raw/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);