openwrt-archive/target/linux/mediatek/patches-4.4/0076-mtd-nand-add-power-domains-to-the-mediatek-driver.patch

From 5dc0d474396e04e6c140d71f0e113eb1c03501c5 Mon Sep 17 00:00:00 2001
From: John Crispin <john@phrozen.org>
Date: Tue, 17 May 2016 05:44:10 +0200
Subject: [PATCH 076/102] mtd: nand: add power domains to the mediatek driver

Signed-off-by: John Crispin <john@phrozen.org>
---
 drivers/mtd/nand/mtk_nand.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

--- a/drivers/mtd/nand/mtk_nand.c
+++ b/drivers/mtd/nand/mtk_nand.c
@@ -16,6 +16,7 @@
 
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/clk.h>
@@ -102,6 +103,7 @@
 #define NFI_MASTER_STA		(0x224)
 #define		MASTER_STA_MASK		(0x0FFF)
 #define NFI_EMPTY_THRESH	(0x23C)
+#define NFI_ACCCON1		(0x244)
 
 #define MTK_NAME		"mtk-nand"
 #define KB(x)			((x) * 1024UL)
@@ -539,6 +541,8 @@ static void mtk_nfc_bad_mark_swap(struct
 	struct mtk_nfc_nand_chip *nand = to_mtk_nand(chip);
 	u32 bad_pos = nand->bad_mark.pos;
 
+	return;
+
 	if (raw)
 		bad_pos += nand->bad_mark.sec * mtk_data_len(chip);
 	else
@@ -946,7 +950,8 @@ static int mtk_nfc_read_oob_std(struct m
 
 static inline void mtk_nfc_hw_init(struct mtk_nfc *nfc)
 {
-	nfi_writel(nfc, 0x10804211, NFI_ACCCON);
+	nfi_writel(nfc, 0x30c77fff, NFI_ACCCON);
+	nfi_writel(nfc, 0xC03222, NFI_ACCCON1);
 	nfi_writew(nfc, 0xf1, NFI_CNRNB);
 	nfi_writew(nfc, PAGEFMT_8K_16K, NFI_PAGEFMT);
 
@@ -1328,6 +1333,9 @@ static int mtk_nfc_probe(struct platform
 		goto clk_disable;
 	}
 
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+
 	platform_set_drvdata(pdev, nfc);
 
 	ret = mtk_nfc_nand_chips_init(dev, nfc);
@@ -1362,6 +1370,9 @@ static int mtk_nfc_remove(struct platfor
 	mtk_ecc_release(nfc->ecc);
 	mtk_nfc_disable_clk(&nfc->clk);
 
+	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
 	return 0;
 }