# Board specific.
obj-$(CONFIG_MTD_ONENAND_GENERIC) += generic.o
obj-$(CONFIG_MTD_ONENAND_OMAP2) += omap2.o
-obj-$(CONFIG_MTD_ONENAND_SAMSUNG) += samsung_mtd.o
+obj-$(CONFIG_MTD_ONENAND_SAMSUNG) += onenand_samsung.o
onenand-objs = onenand_base.o onenand_bbt.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Samsung S3C64XX/S5PC1XX OneNAND driver
+ *
+ * Copyright © 2008-2010 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Implementation:
+ * S3C64XX: emulate the pseudo BufferRAM
+ * S5PC110: use DMA
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/onenand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+
+#include "samsung.h"
+
+enum soc_type {
+ TYPE_S3C6400,
+ TYPE_S3C6410,
+ TYPE_S5PC110,
+};
+
+#define ONENAND_ERASE_STATUS 0x00
+#define ONENAND_MULTI_ERASE_SET 0x01
+#define ONENAND_ERASE_START 0x03
+#define ONENAND_UNLOCK_START 0x08
+#define ONENAND_UNLOCK_END 0x09
+#define ONENAND_LOCK_START 0x0A
+#define ONENAND_LOCK_END 0x0B
+#define ONENAND_LOCK_TIGHT_START 0x0C
+#define ONENAND_LOCK_TIGHT_END 0x0D
+#define ONENAND_UNLOCK_ALL 0x0E
+#define ONENAND_OTP_ACCESS 0x12
+#define ONENAND_SPARE_ACCESS_ONLY 0x13
+#define ONENAND_MAIN_ACCESS_ONLY 0x14
+#define ONENAND_ERASE_VERIFY 0x15
+#define ONENAND_MAIN_SPARE_ACCESS 0x16
+#define ONENAND_PIPELINE_READ 0x4000
+
+#define MAP_00 (0x0)
+#define MAP_01 (0x1)
+#define MAP_10 (0x2)
+#define MAP_11 (0x3)
+
+#define S3C64XX_CMD_MAP_SHIFT 24
+
+#define S3C6400_FBA_SHIFT 10
+#define S3C6400_FPA_SHIFT 4
+#define S3C6400_FSA_SHIFT 2
+
+#define S3C6410_FBA_SHIFT 12
+#define S3C6410_FPA_SHIFT 6
+#define S3C6410_FSA_SHIFT 4
+
+/* S5PC110 specific definitions */
+#define S5PC110_DMA_SRC_ADDR 0x400
+#define S5PC110_DMA_SRC_CFG 0x404
+#define S5PC110_DMA_DST_ADDR 0x408
+#define S5PC110_DMA_DST_CFG 0x40C
+#define S5PC110_DMA_TRANS_SIZE 0x414
+#define S5PC110_DMA_TRANS_CMD 0x418
+#define S5PC110_DMA_TRANS_STATUS 0x41C
+#define S5PC110_DMA_TRANS_DIR 0x420
+#define S5PC110_INTC_DMA_CLR 0x1004
+#define S5PC110_INTC_ONENAND_CLR 0x1008
+#define S5PC110_INTC_DMA_MASK 0x1024
+#define S5PC110_INTC_ONENAND_MASK 0x1028
+#define S5PC110_INTC_DMA_PEND 0x1044
+#define S5PC110_INTC_ONENAND_PEND 0x1048
+#define S5PC110_INTC_DMA_STATUS 0x1064
+#define S5PC110_INTC_ONENAND_STATUS 0x1068
+
+#define S5PC110_INTC_DMA_TD (1 << 24)
+#define S5PC110_INTC_DMA_TE (1 << 16)
+
+#define S5PC110_DMA_CFG_SINGLE (0x0 << 16)
+#define S5PC110_DMA_CFG_4BURST (0x2 << 16)
+#define S5PC110_DMA_CFG_8BURST (0x3 << 16)
+#define S5PC110_DMA_CFG_16BURST (0x4 << 16)
+
+#define S5PC110_DMA_CFG_INC (0x0 << 8)
+#define S5PC110_DMA_CFG_CNT (0x1 << 8)
+
+#define S5PC110_DMA_CFG_8BIT (0x0 << 0)
+#define S5PC110_DMA_CFG_16BIT (0x1 << 0)
+#define S5PC110_DMA_CFG_32BIT (0x2 << 0)
+
+#define S5PC110_DMA_SRC_CFG_READ (S5PC110_DMA_CFG_16BURST | \
+ S5PC110_DMA_CFG_INC | \
+ S5PC110_DMA_CFG_16BIT)
+#define S5PC110_DMA_DST_CFG_READ (S5PC110_DMA_CFG_16BURST | \
+ S5PC110_DMA_CFG_INC | \
+ S5PC110_DMA_CFG_32BIT)
+#define S5PC110_DMA_SRC_CFG_WRITE (S5PC110_DMA_CFG_16BURST | \
+ S5PC110_DMA_CFG_INC | \
+ S5PC110_DMA_CFG_32BIT)
+#define S5PC110_DMA_DST_CFG_WRITE (S5PC110_DMA_CFG_16BURST | \
+ S5PC110_DMA_CFG_INC | \
+ S5PC110_DMA_CFG_16BIT)
+
+#define S5PC110_DMA_TRANS_CMD_TDC (0x1 << 18)
+#define S5PC110_DMA_TRANS_CMD_TEC (0x1 << 16)
+#define S5PC110_DMA_TRANS_CMD_TR (0x1 << 0)
+
+#define S5PC110_DMA_TRANS_STATUS_TD (0x1 << 18)
+#define S5PC110_DMA_TRANS_STATUS_TB (0x1 << 17)
+#define S5PC110_DMA_TRANS_STATUS_TE (0x1 << 16)
+
+#define S5PC110_DMA_DIR_READ 0x0
+#define S5PC110_DMA_DIR_WRITE 0x1
+
+struct s3c_onenand {
+ struct mtd_info *mtd;
+ struct platform_device *pdev;
+ enum soc_type type;
+ void __iomem *base;
+ void __iomem *ahb_addr;
+ int bootram_command;
+ void *page_buf;
+ void *oob_buf;
+ unsigned int (*mem_addr)(int fba, int fpa, int fsa);
+ unsigned int (*cmd_map)(unsigned int type, unsigned int val);
+ void __iomem *dma_addr;
+ unsigned long phys_base;
+ struct completion complete;
+};
+
+#define CMD_MAP_00(dev, addr) (dev->cmd_map(MAP_00, ((addr) << 1)))
+#define CMD_MAP_01(dev, mem_addr) (dev->cmd_map(MAP_01, (mem_addr)))
+#define CMD_MAP_10(dev, mem_addr) (dev->cmd_map(MAP_10, (mem_addr)))
+#define CMD_MAP_11(dev, addr) (dev->cmd_map(MAP_11, ((addr) << 2)))
+
+static struct s3c_onenand *onenand;
+
+static inline int s3c_read_reg(int offset)
+{
+ return readl(onenand->base + offset);
+}
+
+static inline void s3c_write_reg(int value, int offset)
+{
+ writel(value, onenand->base + offset);
+}
+
+static inline int s3c_read_cmd(unsigned int cmd)
+{
+ return readl(onenand->ahb_addr + cmd);
+}
+
+static inline void s3c_write_cmd(int value, unsigned int cmd)
+{
+ writel(value, onenand->ahb_addr + cmd);
+}
+
+#ifdef SAMSUNG_DEBUG
+static void s3c_dump_reg(void)
+{
+ int i;
+
+ for (i = 0; i < 0x400; i += 0x40) {
+ printk(KERN_INFO "0x%08X: 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ (unsigned int) onenand->base + i,
+ s3c_read_reg(i), s3c_read_reg(i + 0x10),
+ s3c_read_reg(i + 0x20), s3c_read_reg(i + 0x30));
+ }
+}
+#endif
+
+static unsigned int s3c64xx_cmd_map(unsigned type, unsigned val)
+{
+ return (type << S3C64XX_CMD_MAP_SHIFT) | val;
+}
+
+static unsigned int s3c6400_mem_addr(int fba, int fpa, int fsa)
+{
+ return (fba << S3C6400_FBA_SHIFT) | (fpa << S3C6400_FPA_SHIFT) |
+ (fsa << S3C6400_FSA_SHIFT);
+}
+
+static unsigned int s3c6410_mem_addr(int fba, int fpa, int fsa)
+{
+ return (fba << S3C6410_FBA_SHIFT) | (fpa << S3C6410_FPA_SHIFT) |
+ (fsa << S3C6410_FSA_SHIFT);
+}
+
+static void s3c_onenand_reset(void)
+{
+ unsigned long timeout = 0x10000;
+ int stat;
+
+ s3c_write_reg(ONENAND_MEM_RESET_COLD, MEM_RESET_OFFSET);
+ while (1 && timeout--) {
+ stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
+ if (stat & RST_CMP)
+ break;
+ }
+ stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
+ s3c_write_reg(stat, INT_ERR_ACK_OFFSET);
+
+ /* Clear interrupt */
+ s3c_write_reg(0x0, INT_ERR_ACK_OFFSET);
+ /* Clear the ECC status */
+ s3c_write_reg(0x0, ECC_ERR_STAT_OFFSET);
+}
+
+static unsigned short s3c_onenand_readw(void __iomem *addr)
+{
+ struct onenand_chip *this = onenand->mtd->priv;
+ struct device *dev = &onenand->pdev->dev;
+ int reg = addr - this->base;
+ int word_addr = reg >> 1;
+ int value;
+
+ /* It's used for probing time */
+ switch (reg) {
+ case ONENAND_REG_MANUFACTURER_ID:
+ return s3c_read_reg(MANUFACT_ID_OFFSET);
+ case ONENAND_REG_DEVICE_ID:
+ return s3c_read_reg(DEVICE_ID_OFFSET);
+ case ONENAND_REG_VERSION_ID:
+ return s3c_read_reg(FLASH_VER_ID_OFFSET);
+ case ONENAND_REG_DATA_BUFFER_SIZE:
+ return s3c_read_reg(DATA_BUF_SIZE_OFFSET);
+ case ONENAND_REG_TECHNOLOGY:
+ return s3c_read_reg(TECH_OFFSET);
+ case ONENAND_REG_SYS_CFG1:
+ return s3c_read_reg(MEM_CFG_OFFSET);
+
+ /* Used at unlock all status */
+ case ONENAND_REG_CTRL_STATUS:
+ return 0;
+
+ case ONENAND_REG_WP_STATUS:
+ return ONENAND_WP_US;
+
+ default:
+ break;
+ }
+
+ /* BootRAM access control */
+ if ((unsigned long)addr < ONENAND_DATARAM && onenand->bootram_command) {
+ if (word_addr == 0)
+ return s3c_read_reg(MANUFACT_ID_OFFSET);
+ if (word_addr == 1)
+ return s3c_read_reg(DEVICE_ID_OFFSET);
+ if (word_addr == 2)
+ return s3c_read_reg(FLASH_VER_ID_OFFSET);
+ }
+
+ value = s3c_read_cmd(CMD_MAP_11(onenand, word_addr)) & 0xffff;
+ dev_info(dev, "%s: Illegal access at reg 0x%x, value 0x%x\n", __func__,
+ word_addr, value);
+ return value;
+}
+
+static void s3c_onenand_writew(unsigned short value, void __iomem *addr)
+{
+ struct onenand_chip *this = onenand->mtd->priv;
+ struct device *dev = &onenand->pdev->dev;
+ unsigned int reg = addr - this->base;
+ unsigned int word_addr = reg >> 1;
+
+ /* It's used for probing time */
+ switch (reg) {
+ case ONENAND_REG_SYS_CFG1:
+ s3c_write_reg(value, MEM_CFG_OFFSET);
+ return;
+
+ case ONENAND_REG_START_ADDRESS1:
+ case ONENAND_REG_START_ADDRESS2:
+ return;
+
+ /* Lock/lock-tight/unlock/unlock_all */
+ case ONENAND_REG_START_BLOCK_ADDRESS:
+ return;
+
+ default:
+ break;
+ }
+
+ /* BootRAM access control */
+ if ((unsigned long)addr < ONENAND_DATARAM) {
+ if (value == ONENAND_CMD_READID) {
+ onenand->bootram_command = 1;
+ return;
+ }
+ if (value == ONENAND_CMD_RESET) {
+ s3c_write_reg(ONENAND_MEM_RESET_COLD, MEM_RESET_OFFSET);
+ onenand->bootram_command = 0;
+ return;
+ }
+ }
+
+ dev_info(dev, "%s: Illegal access at reg 0x%x, value 0x%x\n", __func__,
+ word_addr, value);
+
+ s3c_write_cmd(value, CMD_MAP_11(onenand, word_addr));
+}
+
+static int s3c_onenand_wait(struct mtd_info *mtd, int state)
+{
+ struct device *dev = &onenand->pdev->dev;
+ unsigned int flags = INT_ACT;
+ unsigned int stat, ecc;
+ unsigned long timeout;
+
+ switch (state) {
+ case FL_READING:
+ flags |= BLK_RW_CMP | LOAD_CMP;
+ break;
+ case FL_WRITING:
+ flags |= BLK_RW_CMP | PGM_CMP;
+ break;
+ case FL_ERASING:
+ flags |= BLK_RW_CMP | ERS_CMP;
+ break;
+ case FL_LOCKING:
+ flags |= BLK_RW_CMP;
+ break;
+ default:
+ break;
+ }
+
+ /* The 20 msec is enough */
+ timeout = jiffies + msecs_to_jiffies(20);
+ while (time_before(jiffies, timeout)) {
+ stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
+ if (stat & flags)
+ break;
+
+ if (state != FL_READING)
+ cond_resched();
+ }
+ /* To get correct interrupt status in timeout case */
+ stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
+ s3c_write_reg(stat, INT_ERR_ACK_OFFSET);
+
+ /*
+ * In the Spec. it checks the controller status first
+ * However if you get the correct information in case of
+ * power off recovery (POR) test, it should read ECC status first
+ */
+ if (stat & LOAD_CMP) {
+ ecc = s3c_read_reg(ECC_ERR_STAT_OFFSET);
+ if (ecc & ONENAND_ECC_4BIT_UNCORRECTABLE) {
+ dev_info(dev, "%s: ECC error = 0x%04x\n", __func__,
+ ecc);
+ mtd->ecc_stats.failed++;
+ return -EBADMSG;
+ }
+ }
+
+ if (stat & (LOCKED_BLK | ERS_FAIL | PGM_FAIL | LD_FAIL_ECC_ERR)) {
+ dev_info(dev, "%s: controller error = 0x%04x\n", __func__,
+ stat);
+ if (stat & LOCKED_BLK)
+ dev_info(dev, "%s: it's locked error = 0x%04x\n",
+ __func__, stat);
+
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int s3c_onenand_command(struct mtd_info *mtd, int cmd, loff_t addr,
+ size_t len)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned int *m, *s;
+ int fba, fpa, fsa = 0;
+ unsigned int mem_addr, cmd_map_01, cmd_map_10;
+ int i, mcount, scount;
+ int index;
+
+ fba = (int) (addr >> this->erase_shift);
+ fpa = (int) (addr >> this->page_shift);
+ fpa &= this->page_mask;
+
+ mem_addr = onenand->mem_addr(fba, fpa, fsa);
+ cmd_map_01 = CMD_MAP_01(onenand, mem_addr);
+ cmd_map_10 = CMD_MAP_10(onenand, mem_addr);
+
+ switch (cmd) {
+ case ONENAND_CMD_READ:
+ case ONENAND_CMD_READOOB:
+ case ONENAND_CMD_BUFFERRAM:
+ ONENAND_SET_NEXT_BUFFERRAM(this);
+ default:
+ break;
+ }
+
+ index = ONENAND_CURRENT_BUFFERRAM(this);
+
+ /*
+ * Emulate Two BufferRAMs and access with 4 bytes pointer
+ */
+ m = onenand->page_buf;
+ s = onenand->oob_buf;
+
+ if (index) {
+ m += (this->writesize >> 2);
+ s += (mtd->oobsize >> 2);
+ }
+
+ mcount = mtd->writesize >> 2;
+ scount = mtd->oobsize >> 2;
+
+ switch (cmd) {
+ case ONENAND_CMD_READ:
+ /* Main */
+ for (i = 0; i < mcount; i++)
+ *m++ = s3c_read_cmd(cmd_map_01);
+ return 0;
+
+ case ONENAND_CMD_READOOB:
+ s3c_write_reg(TSRF, TRANS_SPARE_OFFSET);
+ /* Main */
+ for (i = 0; i < mcount; i++)
+ *m++ = s3c_read_cmd(cmd_map_01);
+
+ /* Spare */
+ for (i = 0; i < scount; i++)
+ *s++ = s3c_read_cmd(cmd_map_01);
+
+ s3c_write_reg(0, TRANS_SPARE_OFFSET);
+ return 0;
+
+ case ONENAND_CMD_PROG:
+ /* Main */
+ for (i = 0; i < mcount; i++)
+ s3c_write_cmd(*m++, cmd_map_01);
+ return 0;
+
+ case ONENAND_CMD_PROGOOB:
+ s3c_write_reg(TSRF, TRANS_SPARE_OFFSET);
+
+ /* Main - dummy write */
+ for (i = 0; i < mcount; i++)
+ s3c_write_cmd(0xffffffff, cmd_map_01);
+
+ /* Spare */
+ for (i = 0; i < scount; i++)
+ s3c_write_cmd(*s++, cmd_map_01);
+
+ s3c_write_reg(0, TRANS_SPARE_OFFSET);
+ return 0;
+
+ case ONENAND_CMD_UNLOCK_ALL:
+ s3c_write_cmd(ONENAND_UNLOCK_ALL, cmd_map_10);
+ return 0;
+
+ case ONENAND_CMD_ERASE:
+ s3c_write_cmd(ONENAND_ERASE_START, cmd_map_10);
+ return 0;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static unsigned char *s3c_get_bufferram(struct mtd_info *mtd, int area)
+{
+ struct onenand_chip *this = mtd->priv;
+ int index = ONENAND_CURRENT_BUFFERRAM(this);
+ unsigned char *p;
+
+ if (area == ONENAND_DATARAM) {
+ p = onenand->page_buf;
+ if (index == 1)
+ p += this->writesize;
+ } else {
+ p = onenand->oob_buf;
+ if (index == 1)
+ p += mtd->oobsize;
+ }
+
+ return p;
+}
+
+static int onenand_read_bufferram(struct mtd_info *mtd, int area,
+ unsigned char *buffer, int offset,
+ size_t count)
+{
+ unsigned char *p;
+
+ p = s3c_get_bufferram(mtd, area);
+ memcpy(buffer, p + offset, count);
+ return 0;
+}
+
+static int onenand_write_bufferram(struct mtd_info *mtd, int area,
+ const unsigned char *buffer, int offset,
+ size_t count)
+{
+ unsigned char *p;
+
+ p = s3c_get_bufferram(mtd, area);
+ memcpy(p + offset, buffer, count);
+ return 0;
+}
+
+static int (*s5pc110_dma_ops)(dma_addr_t dst, dma_addr_t src, size_t count, int direction);
+
+static int s5pc110_dma_poll(dma_addr_t dst, dma_addr_t src, size_t count, int direction)
+{
+ void __iomem *base = onenand->dma_addr;
+ int status;
+ unsigned long timeout;
+
+ writel(src, base + S5PC110_DMA_SRC_ADDR);
+ writel(dst, base + S5PC110_DMA_DST_ADDR);
+
+ if (direction == S5PC110_DMA_DIR_READ) {
+ writel(S5PC110_DMA_SRC_CFG_READ, base + S5PC110_DMA_SRC_CFG);
+ writel(S5PC110_DMA_DST_CFG_READ, base + S5PC110_DMA_DST_CFG);
+ } else {
+ writel(S5PC110_DMA_SRC_CFG_WRITE, base + S5PC110_DMA_SRC_CFG);
+ writel(S5PC110_DMA_DST_CFG_WRITE, base + S5PC110_DMA_DST_CFG);
+ }
+
+ writel(count, base + S5PC110_DMA_TRANS_SIZE);
+ writel(direction, base + S5PC110_DMA_TRANS_DIR);
+
+ writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD);
+
+ /*
+ * There's no exact timeout values at Spec.
+ * In real case it takes under 1 msec.
+ * So 20 msecs are enough.
+ */
+ timeout = jiffies + msecs_to_jiffies(20);
+
+ do {
+ status = readl(base + S5PC110_DMA_TRANS_STATUS);
+ if (status & S5PC110_DMA_TRANS_STATUS_TE) {
+ writel(S5PC110_DMA_TRANS_CMD_TEC,
+ base + S5PC110_DMA_TRANS_CMD);
+ return -EIO;
+ }
+ } while (!(status & S5PC110_DMA_TRANS_STATUS_TD) &&
+ time_before(jiffies, timeout));
+
+ writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD);
+
+ return 0;
+}
+
+static irqreturn_t s5pc110_onenand_irq(int irq, void *data)
+{
+ void __iomem *base = onenand->dma_addr;
+ int status, cmd = 0;
+
+ status = readl(base + S5PC110_INTC_DMA_STATUS);
+
+ if (likely(status & S5PC110_INTC_DMA_TD))
+ cmd = S5PC110_DMA_TRANS_CMD_TDC;
+
+ if (unlikely(status & S5PC110_INTC_DMA_TE))
+ cmd = S5PC110_DMA_TRANS_CMD_TEC;
+
+ writel(cmd, base + S5PC110_DMA_TRANS_CMD);
+ writel(status, base + S5PC110_INTC_DMA_CLR);
+
+ if (!onenand->complete.done)
+ complete(&onenand->complete);
+
+ return IRQ_HANDLED;
+}
+
+static int s5pc110_dma_irq(dma_addr_t dst, dma_addr_t src, size_t count, int direction)
+{
+ void __iomem *base = onenand->dma_addr;
+ int status;
+
+ status = readl(base + S5PC110_INTC_DMA_MASK);
+ if (status) {
+ status &= ~(S5PC110_INTC_DMA_TD | S5PC110_INTC_DMA_TE);
+ writel(status, base + S5PC110_INTC_DMA_MASK);
+ }
+
+ writel(src, base + S5PC110_DMA_SRC_ADDR);
+ writel(dst, base + S5PC110_DMA_DST_ADDR);
+
+ if (direction == S5PC110_DMA_DIR_READ) {
+ writel(S5PC110_DMA_SRC_CFG_READ, base + S5PC110_DMA_SRC_CFG);
+ writel(S5PC110_DMA_DST_CFG_READ, base + S5PC110_DMA_DST_CFG);
+ } else {
+ writel(S5PC110_DMA_SRC_CFG_WRITE, base + S5PC110_DMA_SRC_CFG);
+ writel(S5PC110_DMA_DST_CFG_WRITE, base + S5PC110_DMA_DST_CFG);
+ }
+
+ writel(count, base + S5PC110_DMA_TRANS_SIZE);
+ writel(direction, base + S5PC110_DMA_TRANS_DIR);
+
+ writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD);
+
+ wait_for_completion_timeout(&onenand->complete, msecs_to_jiffies(20));
+
+ return 0;
+}
+
+static int s5pc110_read_bufferram(struct mtd_info *mtd, int area,
+ unsigned char *buffer, int offset, size_t count)
+{
+ struct onenand_chip *this = mtd->priv;
+ void __iomem *p;
+ void *buf = (void *) buffer;
+ dma_addr_t dma_src, dma_dst;
+ int err, ofs, page_dma = 0;
+ struct device *dev = &onenand->pdev->dev;
+
+ p = this->base + area;
+ if (ONENAND_CURRENT_BUFFERRAM(this)) {
+ if (area == ONENAND_DATARAM)
+ p += this->writesize;
+ else
+ p += mtd->oobsize;
+ }
+
+ if (offset & 3 || (size_t) buf & 3 ||
+ !onenand->dma_addr || count != mtd->writesize)
+ goto normal;
+
+ /* Handle vmalloc address */
+ if (buf >= high_memory) {
+ struct page *page;
+
+ if (((size_t) buf & PAGE_MASK) !=
+ ((size_t) (buf + count - 1) & PAGE_MASK))
+ goto normal;
+ page = vmalloc_to_page(buf);
+ if (!page)
+ goto normal;
+
+ /* Page offset */
+ ofs = ((size_t) buf & ~PAGE_MASK);
+ page_dma = 1;
+
+ /* DMA routine */
+ dma_src = onenand->phys_base + (p - this->base);
+ dma_dst = dma_map_page(dev, page, ofs, count, DMA_FROM_DEVICE);
+ } else {
+ /* DMA routine */
+ dma_src = onenand->phys_base + (p - this->base);
+ dma_dst = dma_map_single(dev, buf, count, DMA_FROM_DEVICE);
+ }
+ if (dma_mapping_error(dev, dma_dst)) {
+ dev_err(dev, "Couldn't map a %zu byte buffer for DMA\n", count);
+ goto normal;
+ }
+ err = s5pc110_dma_ops(dma_dst, dma_src,
+ count, S5PC110_DMA_DIR_READ);
+
+ if (page_dma)
+ dma_unmap_page(dev, dma_dst, count, DMA_FROM_DEVICE);
+ else
+ dma_unmap_single(dev, dma_dst, count, DMA_FROM_DEVICE);
+
+ if (!err)
+ return 0;
+
+normal:
+ if (count != mtd->writesize) {
+ /* Copy the bufferram to memory to prevent unaligned access */
+ memcpy_fromio(this->page_buf, p, mtd->writesize);
+ memcpy(buffer, this->page_buf + offset, count);
+ } else {
+ memcpy_fromio(buffer, p, count);
+ }
+
+ return 0;
+}
+
+static int s5pc110_chip_probe(struct mtd_info *mtd)
+{
+ /* Now just return 0 */
+ return 0;
+}
+
+static int s3c_onenand_bbt_wait(struct mtd_info *mtd, int state)
+{
+ unsigned int flags = INT_ACT | LOAD_CMP;
+ unsigned int stat;
+ unsigned long timeout;
+
+ /* The 20 msec is enough */
+ timeout = jiffies + msecs_to_jiffies(20);
+ while (time_before(jiffies, timeout)) {
+ stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
+ if (stat & flags)
+ break;
+ }
+ /* To get correct interrupt status in timeout case */
+ stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
+ s3c_write_reg(stat, INT_ERR_ACK_OFFSET);
+
+ if (stat & LD_FAIL_ECC_ERR) {
+ s3c_onenand_reset();
+ return ONENAND_BBT_READ_ERROR;
+ }
+
+ if (stat & LOAD_CMP) {
+ int ecc = s3c_read_reg(ECC_ERR_STAT_OFFSET);
+ if (ecc & ONENAND_ECC_4BIT_UNCORRECTABLE) {
+ s3c_onenand_reset();
+ return ONENAND_BBT_READ_ERROR;
+ }
+ }
+
+ return 0;
+}
+
+static void s3c_onenand_check_lock_status(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ struct device *dev = &onenand->pdev->dev;
+ unsigned int block, end;
+
+ end = this->chipsize >> this->erase_shift;
+
+ for (block = 0; block < end; block++) {
+ unsigned int mem_addr = onenand->mem_addr(block, 0, 0);
+ s3c_read_cmd(CMD_MAP_01(onenand, mem_addr));
+
+ if (s3c_read_reg(INT_ERR_STAT_OFFSET) & LOCKED_BLK) {
+ dev_err(dev, "block %d is write-protected!\n", block);
+ s3c_write_reg(LOCKED_BLK, INT_ERR_ACK_OFFSET);
+ }
+ }
+}
+
+static void s3c_onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs,
+ size_t len, int cmd)
+{
+ struct onenand_chip *this = mtd->priv;
+ int start, end, start_mem_addr, end_mem_addr;
+
+ start = ofs >> this->erase_shift;
+ start_mem_addr = onenand->mem_addr(start, 0, 0);
+ end = start + (len >> this->erase_shift) - 1;
+ end_mem_addr = onenand->mem_addr(end, 0, 0);
+
+ if (cmd == ONENAND_CMD_LOCK) {
+ s3c_write_cmd(ONENAND_LOCK_START, CMD_MAP_10(onenand,
+ start_mem_addr));
+ s3c_write_cmd(ONENAND_LOCK_END, CMD_MAP_10(onenand,
+ end_mem_addr));
+ } else {
+ s3c_write_cmd(ONENAND_UNLOCK_START, CMD_MAP_10(onenand,
+ start_mem_addr));
+ s3c_write_cmd(ONENAND_UNLOCK_END, CMD_MAP_10(onenand,
+ end_mem_addr));
+ }
+
+ this->wait(mtd, FL_LOCKING);
+}
+
+static void s3c_unlock_all(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ loff_t ofs = 0;
+ size_t len = this->chipsize;
+
+ if (this->options & ONENAND_HAS_UNLOCK_ALL) {
+ /* Write unlock command */
+ this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0);
+
+ /* No need to check return value */
+ this->wait(mtd, FL_LOCKING);
+
+ /* Workaround for all block unlock in DDP */
+ if (!ONENAND_IS_DDP(this)) {
+ s3c_onenand_check_lock_status(mtd);
+ return;
+ }
+
+ /* All blocks on another chip */
+ ofs = this->chipsize >> 1;
+ len = this->chipsize >> 1;
+ }
+
+ s3c_onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
+
+ s3c_onenand_check_lock_status(mtd);
+}
+
+static void s3c_onenand_setup(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+
+ onenand->mtd = mtd;
+
+ if (onenand->type == TYPE_S3C6400) {
+ onenand->mem_addr = s3c6400_mem_addr;
+ onenand->cmd_map = s3c64xx_cmd_map;
+ } else if (onenand->type == TYPE_S3C6410) {
+ onenand->mem_addr = s3c6410_mem_addr;
+ onenand->cmd_map = s3c64xx_cmd_map;
+ } else if (onenand->type == TYPE_S5PC110) {
+ /* Use generic onenand functions */
+ this->read_bufferram = s5pc110_read_bufferram;
+ this->chip_probe = s5pc110_chip_probe;
+ return;
+ } else {
+ BUG();
+ }
+
+ this->read_word = s3c_onenand_readw;
+ this->write_word = s3c_onenand_writew;
+
+ this->wait = s3c_onenand_wait;
+ this->bbt_wait = s3c_onenand_bbt_wait;
+ this->unlock_all = s3c_unlock_all;
+ this->command = s3c_onenand_command;
+
+ this->read_bufferram = onenand_read_bufferram;
+ this->write_bufferram = onenand_write_bufferram;
+}
+
+static int s3c_onenand_probe(struct platform_device *pdev)
+{
+ struct onenand_platform_data *pdata;
+ struct onenand_chip *this;
+ struct mtd_info *mtd;
+ struct resource *r;
+ int size, err;
+
+ pdata = dev_get_platdata(&pdev->dev);
+ /* No need to check pdata. the platform data is optional */
+
+ size = sizeof(struct mtd_info) + sizeof(struct onenand_chip);
+ mtd = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+ if (!mtd)
+ return -ENOMEM;
+
+ onenand = devm_kzalloc(&pdev->dev, sizeof(struct s3c_onenand),
+ GFP_KERNEL);
+ if (!onenand)
+ return -ENOMEM;
+
+ this = (struct onenand_chip *) &mtd[1];
+ mtd->priv = this;
+ mtd->dev.parent = &pdev->dev;
+ onenand->pdev = pdev;
+ onenand->type = platform_get_device_id(pdev)->driver_data;
+
+ s3c_onenand_setup(mtd);
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ onenand->base = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(onenand->base))
+ return PTR_ERR(onenand->base);
+
+ onenand->phys_base = r->start;
+
+ /* Set onenand_chip also */
+ this->base = onenand->base;
+
+ /* Use runtime badblock check */
+ this->options |= ONENAND_SKIP_UNLOCK_CHECK;
+
+ if (onenand->type != TYPE_S5PC110) {
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ onenand->ahb_addr = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(onenand->ahb_addr))
+ return PTR_ERR(onenand->ahb_addr);
+
+ /* Allocate 4KiB BufferRAM */
+ onenand->page_buf = devm_kzalloc(&pdev->dev, SZ_4K,
+ GFP_KERNEL);
+ if (!onenand->page_buf)
+ return -ENOMEM;
+
+ /* Allocate 128 SpareRAM */
+ onenand->oob_buf = devm_kzalloc(&pdev->dev, 128, GFP_KERNEL);
+ if (!onenand->oob_buf)
+ return -ENOMEM;
+
+ /* S3C doesn't handle subpage write */
+ mtd->subpage_sft = 0;
+ this->subpagesize = mtd->writesize;
+
+ } else { /* S5PC110 */
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ onenand->dma_addr = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(onenand->dma_addr))
+ return PTR_ERR(onenand->dma_addr);
+
+ s5pc110_dma_ops = s5pc110_dma_poll;
+ /* Interrupt support */
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (r) {
+ init_completion(&onenand->complete);
+ s5pc110_dma_ops = s5pc110_dma_irq;
+ err = devm_request_irq(&pdev->dev, r->start,
+ s5pc110_onenand_irq,
+ IRQF_SHARED, "onenand",
+ &onenand);
+ if (err) {
+ dev_err(&pdev->dev, "failed to get irq\n");
+ return err;
+ }
+ }
+ }
+
+ err = onenand_scan(mtd, 1);
+ if (err)
+ return err;
+
+ if (onenand->type != TYPE_S5PC110) {
+ /* S3C doesn't handle subpage write */
+ mtd->subpage_sft = 0;
+ this->subpagesize = mtd->writesize;
+ }
+
+ if (s3c_read_reg(MEM_CFG_OFFSET) & ONENAND_SYS_CFG1_SYNC_READ)
+ dev_info(&onenand->pdev->dev, "OneNAND Sync. Burst Read enabled\n");
+
+ err = mtd_device_register(mtd, pdata ? pdata->parts : NULL,
+ pdata ? pdata->nr_parts : 0);
+ if (err) {
+ dev_err(&pdev->dev, "failed to parse partitions and register the MTD device\n");
+ onenand_release(mtd);
+ return err;
+ }
+
+ platform_set_drvdata(pdev, mtd);
+
+ return 0;
+}
+
+static int s3c_onenand_remove(struct platform_device *pdev)
+{
+ struct mtd_info *mtd = platform_get_drvdata(pdev);
+
+ onenand_release(mtd);
+
+ return 0;
+}
+
+static int s3c_pm_ops_suspend(struct device *dev)
+{
+ struct mtd_info *mtd = dev_get_drvdata(dev);
+ struct onenand_chip *this = mtd->priv;
+
+ this->wait(mtd, FL_PM_SUSPENDED);
+ return 0;
+}
+
+static int s3c_pm_ops_resume(struct device *dev)
+{
+ struct mtd_info *mtd = dev_get_drvdata(dev);
+ struct onenand_chip *this = mtd->priv;
+
+ this->unlock_all(mtd);
+ return 0;
+}
+
+static const struct dev_pm_ops s3c_pm_ops = {
+ .suspend = s3c_pm_ops_suspend,
+ .resume = s3c_pm_ops_resume,
+};
+
+static const struct platform_device_id s3c_onenand_driver_ids[] = {
+ {
+ .name = "s3c6400-onenand",
+ .driver_data = TYPE_S3C6400,
+ }, {
+ .name = "s3c6410-onenand",
+ .driver_data = TYPE_S3C6410,
+ }, {
+ .name = "s5pc110-onenand",
+ .driver_data = TYPE_S5PC110,
+ }, { },
+};
+MODULE_DEVICE_TABLE(platform, s3c_onenand_driver_ids);
+
+static struct platform_driver s3c_onenand_driver = {
+ .driver = {
+ .name = "samsung-onenand",
+ .pm = &s3c_pm_ops,
+ },
+ .id_table = s3c_onenand_driver_ids,
+ .probe = s3c_onenand_probe,
+ .remove = s3c_onenand_remove,
+};
+
+module_platform_driver(s3c_onenand_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>");
+MODULE_DESCRIPTION("Samsung OneNAND controller support");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Samsung S3C64XX/S5PC1XX OneNAND driver
- *
- * Copyright © 2008-2010 Samsung Electronics
- * Kyungmin Park <kyungmin.park@samsung.com>
- * Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * Implementation:
- * S3C64XX: emulate the pseudo BufferRAM
- * S5PC110: use DMA
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/onenand.h>
-#include <linux/mtd/partitions.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-
-#include "samsung.h"
-
-enum soc_type {
- TYPE_S3C6400,
- TYPE_S3C6410,
- TYPE_S5PC110,
-};
-
-#define ONENAND_ERASE_STATUS 0x00
-#define ONENAND_MULTI_ERASE_SET 0x01
-#define ONENAND_ERASE_START 0x03
-#define ONENAND_UNLOCK_START 0x08
-#define ONENAND_UNLOCK_END 0x09
-#define ONENAND_LOCK_START 0x0A
-#define ONENAND_LOCK_END 0x0B
-#define ONENAND_LOCK_TIGHT_START 0x0C
-#define ONENAND_LOCK_TIGHT_END 0x0D
-#define ONENAND_UNLOCK_ALL 0x0E
-#define ONENAND_OTP_ACCESS 0x12
-#define ONENAND_SPARE_ACCESS_ONLY 0x13
-#define ONENAND_MAIN_ACCESS_ONLY 0x14
-#define ONENAND_ERASE_VERIFY 0x15
-#define ONENAND_MAIN_SPARE_ACCESS 0x16
-#define ONENAND_PIPELINE_READ 0x4000
-
-#define MAP_00 (0x0)
-#define MAP_01 (0x1)
-#define MAP_10 (0x2)
-#define MAP_11 (0x3)
-
-#define S3C64XX_CMD_MAP_SHIFT 24
-
-#define S3C6400_FBA_SHIFT 10
-#define S3C6400_FPA_SHIFT 4
-#define S3C6400_FSA_SHIFT 2
-
-#define S3C6410_FBA_SHIFT 12
-#define S3C6410_FPA_SHIFT 6
-#define S3C6410_FSA_SHIFT 4
-
-/* S5PC110 specific definitions */
-#define S5PC110_DMA_SRC_ADDR 0x400
-#define S5PC110_DMA_SRC_CFG 0x404
-#define S5PC110_DMA_DST_ADDR 0x408
-#define S5PC110_DMA_DST_CFG 0x40C
-#define S5PC110_DMA_TRANS_SIZE 0x414
-#define S5PC110_DMA_TRANS_CMD 0x418
-#define S5PC110_DMA_TRANS_STATUS 0x41C
-#define S5PC110_DMA_TRANS_DIR 0x420
-#define S5PC110_INTC_DMA_CLR 0x1004
-#define S5PC110_INTC_ONENAND_CLR 0x1008
-#define S5PC110_INTC_DMA_MASK 0x1024
-#define S5PC110_INTC_ONENAND_MASK 0x1028
-#define S5PC110_INTC_DMA_PEND 0x1044
-#define S5PC110_INTC_ONENAND_PEND 0x1048
-#define S5PC110_INTC_DMA_STATUS 0x1064
-#define S5PC110_INTC_ONENAND_STATUS 0x1068
-
-#define S5PC110_INTC_DMA_TD (1 << 24)
-#define S5PC110_INTC_DMA_TE (1 << 16)
-
-#define S5PC110_DMA_CFG_SINGLE (0x0 << 16)
-#define S5PC110_DMA_CFG_4BURST (0x2 << 16)
-#define S5PC110_DMA_CFG_8BURST (0x3 << 16)
-#define S5PC110_DMA_CFG_16BURST (0x4 << 16)
-
-#define S5PC110_DMA_CFG_INC (0x0 << 8)
-#define S5PC110_DMA_CFG_CNT (0x1 << 8)
-
-#define S5PC110_DMA_CFG_8BIT (0x0 << 0)
-#define S5PC110_DMA_CFG_16BIT (0x1 << 0)
-#define S5PC110_DMA_CFG_32BIT (0x2 << 0)
-
-#define S5PC110_DMA_SRC_CFG_READ (S5PC110_DMA_CFG_16BURST | \
- S5PC110_DMA_CFG_INC | \
- S5PC110_DMA_CFG_16BIT)
-#define S5PC110_DMA_DST_CFG_READ (S5PC110_DMA_CFG_16BURST | \
- S5PC110_DMA_CFG_INC | \
- S5PC110_DMA_CFG_32BIT)
-#define S5PC110_DMA_SRC_CFG_WRITE (S5PC110_DMA_CFG_16BURST | \
- S5PC110_DMA_CFG_INC | \
- S5PC110_DMA_CFG_32BIT)
-#define S5PC110_DMA_DST_CFG_WRITE (S5PC110_DMA_CFG_16BURST | \
- S5PC110_DMA_CFG_INC | \
- S5PC110_DMA_CFG_16BIT)
-
-#define S5PC110_DMA_TRANS_CMD_TDC (0x1 << 18)
-#define S5PC110_DMA_TRANS_CMD_TEC (0x1 << 16)
-#define S5PC110_DMA_TRANS_CMD_TR (0x1 << 0)
-
-#define S5PC110_DMA_TRANS_STATUS_TD (0x1 << 18)
-#define S5PC110_DMA_TRANS_STATUS_TB (0x1 << 17)
-#define S5PC110_DMA_TRANS_STATUS_TE (0x1 << 16)
-
-#define S5PC110_DMA_DIR_READ 0x0
-#define S5PC110_DMA_DIR_WRITE 0x1
-
-struct s3c_onenand {
- struct mtd_info *mtd;
- struct platform_device *pdev;
- enum soc_type type;
- void __iomem *base;
- void __iomem *ahb_addr;
- int bootram_command;
- void *page_buf;
- void *oob_buf;
- unsigned int (*mem_addr)(int fba, int fpa, int fsa);
- unsigned int (*cmd_map)(unsigned int type, unsigned int val);
- void __iomem *dma_addr;
- unsigned long phys_base;
- struct completion complete;
-};
-
-#define CMD_MAP_00(dev, addr) (dev->cmd_map(MAP_00, ((addr) << 1)))
-#define CMD_MAP_01(dev, mem_addr) (dev->cmd_map(MAP_01, (mem_addr)))
-#define CMD_MAP_10(dev, mem_addr) (dev->cmd_map(MAP_10, (mem_addr)))
-#define CMD_MAP_11(dev, addr) (dev->cmd_map(MAP_11, ((addr) << 2)))
-
-static struct s3c_onenand *onenand;
-
-static inline int s3c_read_reg(int offset)
-{
- return readl(onenand->base + offset);
-}
-
-static inline void s3c_write_reg(int value, int offset)
-{
- writel(value, onenand->base + offset);
-}
-
-static inline int s3c_read_cmd(unsigned int cmd)
-{
- return readl(onenand->ahb_addr + cmd);
-}
-
-static inline void s3c_write_cmd(int value, unsigned int cmd)
-{
- writel(value, onenand->ahb_addr + cmd);
-}
-
-#ifdef SAMSUNG_DEBUG
-static void s3c_dump_reg(void)
-{
- int i;
-
- for (i = 0; i < 0x400; i += 0x40) {
- printk(KERN_INFO "0x%08X: 0x%08x 0x%08x 0x%08x 0x%08x\n",
- (unsigned int) onenand->base + i,
- s3c_read_reg(i), s3c_read_reg(i + 0x10),
- s3c_read_reg(i + 0x20), s3c_read_reg(i + 0x30));
- }
-}
-#endif
-
-static unsigned int s3c64xx_cmd_map(unsigned type, unsigned val)
-{
- return (type << S3C64XX_CMD_MAP_SHIFT) | val;
-}
-
-static unsigned int s3c6400_mem_addr(int fba, int fpa, int fsa)
-{
- return (fba << S3C6400_FBA_SHIFT) | (fpa << S3C6400_FPA_SHIFT) |
- (fsa << S3C6400_FSA_SHIFT);
-}
-
-static unsigned int s3c6410_mem_addr(int fba, int fpa, int fsa)
-{
- return (fba << S3C6410_FBA_SHIFT) | (fpa << S3C6410_FPA_SHIFT) |
- (fsa << S3C6410_FSA_SHIFT);
-}
-
-static void s3c_onenand_reset(void)
-{
- unsigned long timeout = 0x10000;
- int stat;
-
- s3c_write_reg(ONENAND_MEM_RESET_COLD, MEM_RESET_OFFSET);
- while (1 && timeout--) {
- stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
- if (stat & RST_CMP)
- break;
- }
- stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
- s3c_write_reg(stat, INT_ERR_ACK_OFFSET);
-
- /* Clear interrupt */
- s3c_write_reg(0x0, INT_ERR_ACK_OFFSET);
- /* Clear the ECC status */
- s3c_write_reg(0x0, ECC_ERR_STAT_OFFSET);
-}
-
-static unsigned short s3c_onenand_readw(void __iomem *addr)
-{
- struct onenand_chip *this = onenand->mtd->priv;
- struct device *dev = &onenand->pdev->dev;
- int reg = addr - this->base;
- int word_addr = reg >> 1;
- int value;
-
- /* It's used for probing time */
- switch (reg) {
- case ONENAND_REG_MANUFACTURER_ID:
- return s3c_read_reg(MANUFACT_ID_OFFSET);
- case ONENAND_REG_DEVICE_ID:
- return s3c_read_reg(DEVICE_ID_OFFSET);
- case ONENAND_REG_VERSION_ID:
- return s3c_read_reg(FLASH_VER_ID_OFFSET);
- case ONENAND_REG_DATA_BUFFER_SIZE:
- return s3c_read_reg(DATA_BUF_SIZE_OFFSET);
- case ONENAND_REG_TECHNOLOGY:
- return s3c_read_reg(TECH_OFFSET);
- case ONENAND_REG_SYS_CFG1:
- return s3c_read_reg(MEM_CFG_OFFSET);
-
- /* Used at unlock all status */
- case ONENAND_REG_CTRL_STATUS:
- return 0;
-
- case ONENAND_REG_WP_STATUS:
- return ONENAND_WP_US;
-
- default:
- break;
- }
-
- /* BootRAM access control */
- if ((unsigned long)addr < ONENAND_DATARAM && onenand->bootram_command) {
- if (word_addr == 0)
- return s3c_read_reg(MANUFACT_ID_OFFSET);
- if (word_addr == 1)
- return s3c_read_reg(DEVICE_ID_OFFSET);
- if (word_addr == 2)
- return s3c_read_reg(FLASH_VER_ID_OFFSET);
- }
-
- value = s3c_read_cmd(CMD_MAP_11(onenand, word_addr)) & 0xffff;
- dev_info(dev, "%s: Illegal access at reg 0x%x, value 0x%x\n", __func__,
- word_addr, value);
- return value;
-}
-
-static void s3c_onenand_writew(unsigned short value, void __iomem *addr)
-{
- struct onenand_chip *this = onenand->mtd->priv;
- struct device *dev = &onenand->pdev->dev;
- unsigned int reg = addr - this->base;
- unsigned int word_addr = reg >> 1;
-
- /* It's used for probing time */
- switch (reg) {
- case ONENAND_REG_SYS_CFG1:
- s3c_write_reg(value, MEM_CFG_OFFSET);
- return;
-
- case ONENAND_REG_START_ADDRESS1:
- case ONENAND_REG_START_ADDRESS2:
- return;
-
- /* Lock/lock-tight/unlock/unlock_all */
- case ONENAND_REG_START_BLOCK_ADDRESS:
- return;
-
- default:
- break;
- }
-
- /* BootRAM access control */
- if ((unsigned long)addr < ONENAND_DATARAM) {
- if (value == ONENAND_CMD_READID) {
- onenand->bootram_command = 1;
- return;
- }
- if (value == ONENAND_CMD_RESET) {
- s3c_write_reg(ONENAND_MEM_RESET_COLD, MEM_RESET_OFFSET);
- onenand->bootram_command = 0;
- return;
- }
- }
-
- dev_info(dev, "%s: Illegal access at reg 0x%x, value 0x%x\n", __func__,
- word_addr, value);
-
- s3c_write_cmd(value, CMD_MAP_11(onenand, word_addr));
-}
-
-static int s3c_onenand_wait(struct mtd_info *mtd, int state)
-{
- struct device *dev = &onenand->pdev->dev;
- unsigned int flags = INT_ACT;
- unsigned int stat, ecc;
- unsigned long timeout;
-
- switch (state) {
- case FL_READING:
- flags |= BLK_RW_CMP | LOAD_CMP;
- break;
- case FL_WRITING:
- flags |= BLK_RW_CMP | PGM_CMP;
- break;
- case FL_ERASING:
- flags |= BLK_RW_CMP | ERS_CMP;
- break;
- case FL_LOCKING:
- flags |= BLK_RW_CMP;
- break;
- default:
- break;
- }
-
- /* The 20 msec is enough */
- timeout = jiffies + msecs_to_jiffies(20);
- while (time_before(jiffies, timeout)) {
- stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
- if (stat & flags)
- break;
-
- if (state != FL_READING)
- cond_resched();
- }
- /* To get correct interrupt status in timeout case */
- stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
- s3c_write_reg(stat, INT_ERR_ACK_OFFSET);
-
- /*
- * In the Spec. it checks the controller status first
- * However if you get the correct information in case of
- * power off recovery (POR) test, it should read ECC status first
- */
- if (stat & LOAD_CMP) {
- ecc = s3c_read_reg(ECC_ERR_STAT_OFFSET);
- if (ecc & ONENAND_ECC_4BIT_UNCORRECTABLE) {
- dev_info(dev, "%s: ECC error = 0x%04x\n", __func__,
- ecc);
- mtd->ecc_stats.failed++;
- return -EBADMSG;
- }
- }
-
- if (stat & (LOCKED_BLK | ERS_FAIL | PGM_FAIL | LD_FAIL_ECC_ERR)) {
- dev_info(dev, "%s: controller error = 0x%04x\n", __func__,
- stat);
- if (stat & LOCKED_BLK)
- dev_info(dev, "%s: it's locked error = 0x%04x\n",
- __func__, stat);
-
- return -EIO;
- }
-
- return 0;
-}
-
-static int s3c_onenand_command(struct mtd_info *mtd, int cmd, loff_t addr,
- size_t len)
-{
- struct onenand_chip *this = mtd->priv;
- unsigned int *m, *s;
- int fba, fpa, fsa = 0;
- unsigned int mem_addr, cmd_map_01, cmd_map_10;
- int i, mcount, scount;
- int index;
-
- fba = (int) (addr >> this->erase_shift);
- fpa = (int) (addr >> this->page_shift);
- fpa &= this->page_mask;
-
- mem_addr = onenand->mem_addr(fba, fpa, fsa);
- cmd_map_01 = CMD_MAP_01(onenand, mem_addr);
- cmd_map_10 = CMD_MAP_10(onenand, mem_addr);
-
- switch (cmd) {
- case ONENAND_CMD_READ:
- case ONENAND_CMD_READOOB:
- case ONENAND_CMD_BUFFERRAM:
- ONENAND_SET_NEXT_BUFFERRAM(this);
- default:
- break;
- }
-
- index = ONENAND_CURRENT_BUFFERRAM(this);
-
- /*
- * Emulate Two BufferRAMs and access with 4 bytes pointer
- */
- m = onenand->page_buf;
- s = onenand->oob_buf;
-
- if (index) {
- m += (this->writesize >> 2);
- s += (mtd->oobsize >> 2);
- }
-
- mcount = mtd->writesize >> 2;
- scount = mtd->oobsize >> 2;
-
- switch (cmd) {
- case ONENAND_CMD_READ:
- /* Main */
- for (i = 0; i < mcount; i++)
- *m++ = s3c_read_cmd(cmd_map_01);
- return 0;
-
- case ONENAND_CMD_READOOB:
- s3c_write_reg(TSRF, TRANS_SPARE_OFFSET);
- /* Main */
- for (i = 0; i < mcount; i++)
- *m++ = s3c_read_cmd(cmd_map_01);
-
- /* Spare */
- for (i = 0; i < scount; i++)
- *s++ = s3c_read_cmd(cmd_map_01);
-
- s3c_write_reg(0, TRANS_SPARE_OFFSET);
- return 0;
-
- case ONENAND_CMD_PROG:
- /* Main */
- for (i = 0; i < mcount; i++)
- s3c_write_cmd(*m++, cmd_map_01);
- return 0;
-
- case ONENAND_CMD_PROGOOB:
- s3c_write_reg(TSRF, TRANS_SPARE_OFFSET);
-
- /* Main - dummy write */
- for (i = 0; i < mcount; i++)
- s3c_write_cmd(0xffffffff, cmd_map_01);
-
- /* Spare */
- for (i = 0; i < scount; i++)
- s3c_write_cmd(*s++, cmd_map_01);
-
- s3c_write_reg(0, TRANS_SPARE_OFFSET);
- return 0;
-
- case ONENAND_CMD_UNLOCK_ALL:
- s3c_write_cmd(ONENAND_UNLOCK_ALL, cmd_map_10);
- return 0;
-
- case ONENAND_CMD_ERASE:
- s3c_write_cmd(ONENAND_ERASE_START, cmd_map_10);
- return 0;
-
- default:
- break;
- }
-
- return 0;
-}
-
-static unsigned char *s3c_get_bufferram(struct mtd_info *mtd, int area)
-{
- struct onenand_chip *this = mtd->priv;
- int index = ONENAND_CURRENT_BUFFERRAM(this);
- unsigned char *p;
-
- if (area == ONENAND_DATARAM) {
- p = onenand->page_buf;
- if (index == 1)
- p += this->writesize;
- } else {
- p = onenand->oob_buf;
- if (index == 1)
- p += mtd->oobsize;
- }
-
- return p;
-}
-
-static int onenand_read_bufferram(struct mtd_info *mtd, int area,
- unsigned char *buffer, int offset,
- size_t count)
-{
- unsigned char *p;
-
- p = s3c_get_bufferram(mtd, area);
- memcpy(buffer, p + offset, count);
- return 0;
-}
-
-static int onenand_write_bufferram(struct mtd_info *mtd, int area,
- const unsigned char *buffer, int offset,
- size_t count)
-{
- unsigned char *p;
-
- p = s3c_get_bufferram(mtd, area);
- memcpy(p + offset, buffer, count);
- return 0;
-}
-
-static int (*s5pc110_dma_ops)(dma_addr_t dst, dma_addr_t src, size_t count, int direction);
-
-static int s5pc110_dma_poll(dma_addr_t dst, dma_addr_t src, size_t count, int direction)
-{
- void __iomem *base = onenand->dma_addr;
- int status;
- unsigned long timeout;
-
- writel(src, base + S5PC110_DMA_SRC_ADDR);
- writel(dst, base + S5PC110_DMA_DST_ADDR);
-
- if (direction == S5PC110_DMA_DIR_READ) {
- writel(S5PC110_DMA_SRC_CFG_READ, base + S5PC110_DMA_SRC_CFG);
- writel(S5PC110_DMA_DST_CFG_READ, base + S5PC110_DMA_DST_CFG);
- } else {
- writel(S5PC110_DMA_SRC_CFG_WRITE, base + S5PC110_DMA_SRC_CFG);
- writel(S5PC110_DMA_DST_CFG_WRITE, base + S5PC110_DMA_DST_CFG);
- }
-
- writel(count, base + S5PC110_DMA_TRANS_SIZE);
- writel(direction, base + S5PC110_DMA_TRANS_DIR);
-
- writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD);
-
- /*
- * There's no exact timeout values at Spec.
- * In real case it takes under 1 msec.
- * So 20 msecs are enough.
- */
- timeout = jiffies + msecs_to_jiffies(20);
-
- do {
- status = readl(base + S5PC110_DMA_TRANS_STATUS);
- if (status & S5PC110_DMA_TRANS_STATUS_TE) {
- writel(S5PC110_DMA_TRANS_CMD_TEC,
- base + S5PC110_DMA_TRANS_CMD);
- return -EIO;
- }
- } while (!(status & S5PC110_DMA_TRANS_STATUS_TD) &&
- time_before(jiffies, timeout));
-
- writel(S5PC110_DMA_TRANS_CMD_TDC, base + S5PC110_DMA_TRANS_CMD);
-
- return 0;
-}
-
-static irqreturn_t s5pc110_onenand_irq(int irq, void *data)
-{
- void __iomem *base = onenand->dma_addr;
- int status, cmd = 0;
-
- status = readl(base + S5PC110_INTC_DMA_STATUS);
-
- if (likely(status & S5PC110_INTC_DMA_TD))
- cmd = S5PC110_DMA_TRANS_CMD_TDC;
-
- if (unlikely(status & S5PC110_INTC_DMA_TE))
- cmd = S5PC110_DMA_TRANS_CMD_TEC;
-
- writel(cmd, base + S5PC110_DMA_TRANS_CMD);
- writel(status, base + S5PC110_INTC_DMA_CLR);
-
- if (!onenand->complete.done)
- complete(&onenand->complete);
-
- return IRQ_HANDLED;
-}
-
-static int s5pc110_dma_irq(dma_addr_t dst, dma_addr_t src, size_t count, int direction)
-{
- void __iomem *base = onenand->dma_addr;
- int status;
-
- status = readl(base + S5PC110_INTC_DMA_MASK);
- if (status) {
- status &= ~(S5PC110_INTC_DMA_TD | S5PC110_INTC_DMA_TE);
- writel(status, base + S5PC110_INTC_DMA_MASK);
- }
-
- writel(src, base + S5PC110_DMA_SRC_ADDR);
- writel(dst, base + S5PC110_DMA_DST_ADDR);
-
- if (direction == S5PC110_DMA_DIR_READ) {
- writel(S5PC110_DMA_SRC_CFG_READ, base + S5PC110_DMA_SRC_CFG);
- writel(S5PC110_DMA_DST_CFG_READ, base + S5PC110_DMA_DST_CFG);
- } else {
- writel(S5PC110_DMA_SRC_CFG_WRITE, base + S5PC110_DMA_SRC_CFG);
- writel(S5PC110_DMA_DST_CFG_WRITE, base + S5PC110_DMA_DST_CFG);
- }
-
- writel(count, base + S5PC110_DMA_TRANS_SIZE);
- writel(direction, base + S5PC110_DMA_TRANS_DIR);
-
- writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD);
-
- wait_for_completion_timeout(&onenand->complete, msecs_to_jiffies(20));
-
- return 0;
-}
-
-static int s5pc110_read_bufferram(struct mtd_info *mtd, int area,
- unsigned char *buffer, int offset, size_t count)
-{
- struct onenand_chip *this = mtd->priv;
- void __iomem *p;
- void *buf = (void *) buffer;
- dma_addr_t dma_src, dma_dst;
- int err, ofs, page_dma = 0;
- struct device *dev = &onenand->pdev->dev;
-
- p = this->base + area;
- if (ONENAND_CURRENT_BUFFERRAM(this)) {
- if (area == ONENAND_DATARAM)
- p += this->writesize;
- else
- p += mtd->oobsize;
- }
-
- if (offset & 3 || (size_t) buf & 3 ||
- !onenand->dma_addr || count != mtd->writesize)
- goto normal;
-
- /* Handle vmalloc address */
- if (buf >= high_memory) {
- struct page *page;
-
- if (((size_t) buf & PAGE_MASK) !=
- ((size_t) (buf + count - 1) & PAGE_MASK))
- goto normal;
- page = vmalloc_to_page(buf);
- if (!page)
- goto normal;
-
- /* Page offset */
- ofs = ((size_t) buf & ~PAGE_MASK);
- page_dma = 1;
-
- /* DMA routine */
- dma_src = onenand->phys_base + (p - this->base);
- dma_dst = dma_map_page(dev, page, ofs, count, DMA_FROM_DEVICE);
- } else {
- /* DMA routine */
- dma_src = onenand->phys_base + (p - this->base);
- dma_dst = dma_map_single(dev, buf, count, DMA_FROM_DEVICE);
- }
- if (dma_mapping_error(dev, dma_dst)) {
- dev_err(dev, "Couldn't map a %zu byte buffer for DMA\n", count);
- goto normal;
- }
- err = s5pc110_dma_ops(dma_dst, dma_src,
- count, S5PC110_DMA_DIR_READ);
-
- if (page_dma)
- dma_unmap_page(dev, dma_dst, count, DMA_FROM_DEVICE);
- else
- dma_unmap_single(dev, dma_dst, count, DMA_FROM_DEVICE);
-
- if (!err)
- return 0;
-
-normal:
- if (count != mtd->writesize) {
- /* Copy the bufferram to memory to prevent unaligned access */
- memcpy_fromio(this->page_buf, p, mtd->writesize);
- memcpy(buffer, this->page_buf + offset, count);
- } else {
- memcpy_fromio(buffer, p, count);
- }
-
- return 0;
-}
-
-static int s5pc110_chip_probe(struct mtd_info *mtd)
-{
- /* Now just return 0 */
- return 0;
-}
-
-static int s3c_onenand_bbt_wait(struct mtd_info *mtd, int state)
-{
- unsigned int flags = INT_ACT | LOAD_CMP;
- unsigned int stat;
- unsigned long timeout;
-
- /* The 20 msec is enough */
- timeout = jiffies + msecs_to_jiffies(20);
- while (time_before(jiffies, timeout)) {
- stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
- if (stat & flags)
- break;
- }
- /* To get correct interrupt status in timeout case */
- stat = s3c_read_reg(INT_ERR_STAT_OFFSET);
- s3c_write_reg(stat, INT_ERR_ACK_OFFSET);
-
- if (stat & LD_FAIL_ECC_ERR) {
- s3c_onenand_reset();
- return ONENAND_BBT_READ_ERROR;
- }
-
- if (stat & LOAD_CMP) {
- int ecc = s3c_read_reg(ECC_ERR_STAT_OFFSET);
- if (ecc & ONENAND_ECC_4BIT_UNCORRECTABLE) {
- s3c_onenand_reset();
- return ONENAND_BBT_READ_ERROR;
- }
- }
-
- return 0;
-}
-
-static void s3c_onenand_check_lock_status(struct mtd_info *mtd)
-{
- struct onenand_chip *this = mtd->priv;
- struct device *dev = &onenand->pdev->dev;
- unsigned int block, end;
-
- end = this->chipsize >> this->erase_shift;
-
- for (block = 0; block < end; block++) {
- unsigned int mem_addr = onenand->mem_addr(block, 0, 0);
- s3c_read_cmd(CMD_MAP_01(onenand, mem_addr));
-
- if (s3c_read_reg(INT_ERR_STAT_OFFSET) & LOCKED_BLK) {
- dev_err(dev, "block %d is write-protected!\n", block);
- s3c_write_reg(LOCKED_BLK, INT_ERR_ACK_OFFSET);
- }
- }
-}
-
-static void s3c_onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs,
- size_t len, int cmd)
-{
- struct onenand_chip *this = mtd->priv;
- int start, end, start_mem_addr, end_mem_addr;
-
- start = ofs >> this->erase_shift;
- start_mem_addr = onenand->mem_addr(start, 0, 0);
- end = start + (len >> this->erase_shift) - 1;
- end_mem_addr = onenand->mem_addr(end, 0, 0);
-
- if (cmd == ONENAND_CMD_LOCK) {
- s3c_write_cmd(ONENAND_LOCK_START, CMD_MAP_10(onenand,
- start_mem_addr));
- s3c_write_cmd(ONENAND_LOCK_END, CMD_MAP_10(onenand,
- end_mem_addr));
- } else {
- s3c_write_cmd(ONENAND_UNLOCK_START, CMD_MAP_10(onenand,
- start_mem_addr));
- s3c_write_cmd(ONENAND_UNLOCK_END, CMD_MAP_10(onenand,
- end_mem_addr));
- }
-
- this->wait(mtd, FL_LOCKING);
-}
-
-static void s3c_unlock_all(struct mtd_info *mtd)
-{
- struct onenand_chip *this = mtd->priv;
- loff_t ofs = 0;
- size_t len = this->chipsize;
-
- if (this->options & ONENAND_HAS_UNLOCK_ALL) {
- /* Write unlock command */
- this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0);
-
- /* No need to check return value */
- this->wait(mtd, FL_LOCKING);
-
- /* Workaround for all block unlock in DDP */
- if (!ONENAND_IS_DDP(this)) {
- s3c_onenand_check_lock_status(mtd);
- return;
- }
-
- /* All blocks on another chip */
- ofs = this->chipsize >> 1;
- len = this->chipsize >> 1;
- }
-
- s3c_onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
-
- s3c_onenand_check_lock_status(mtd);
-}
-
-static void s3c_onenand_setup(struct mtd_info *mtd)
-{
- struct onenand_chip *this = mtd->priv;
-
- onenand->mtd = mtd;
-
- if (onenand->type == TYPE_S3C6400) {
- onenand->mem_addr = s3c6400_mem_addr;
- onenand->cmd_map = s3c64xx_cmd_map;
- } else if (onenand->type == TYPE_S3C6410) {
- onenand->mem_addr = s3c6410_mem_addr;
- onenand->cmd_map = s3c64xx_cmd_map;
- } else if (onenand->type == TYPE_S5PC110) {
- /* Use generic onenand functions */
- this->read_bufferram = s5pc110_read_bufferram;
- this->chip_probe = s5pc110_chip_probe;
- return;
- } else {
- BUG();
- }
-
- this->read_word = s3c_onenand_readw;
- this->write_word = s3c_onenand_writew;
-
- this->wait = s3c_onenand_wait;
- this->bbt_wait = s3c_onenand_bbt_wait;
- this->unlock_all = s3c_unlock_all;
- this->command = s3c_onenand_command;
-
- this->read_bufferram = onenand_read_bufferram;
- this->write_bufferram = onenand_write_bufferram;
-}
-
-static int s3c_onenand_probe(struct platform_device *pdev)
-{
- struct onenand_platform_data *pdata;
- struct onenand_chip *this;
- struct mtd_info *mtd;
- struct resource *r;
- int size, err;
-
- pdata = dev_get_platdata(&pdev->dev);
- /* No need to check pdata. the platform data is optional */
-
- size = sizeof(struct mtd_info) + sizeof(struct onenand_chip);
- mtd = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
- if (!mtd)
- return -ENOMEM;
-
- onenand = devm_kzalloc(&pdev->dev, sizeof(struct s3c_onenand),
- GFP_KERNEL);
- if (!onenand)
- return -ENOMEM;
-
- this = (struct onenand_chip *) &mtd[1];
- mtd->priv = this;
- mtd->dev.parent = &pdev->dev;
- onenand->pdev = pdev;
- onenand->type = platform_get_device_id(pdev)->driver_data;
-
- s3c_onenand_setup(mtd);
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- onenand->base = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(onenand->base))
- return PTR_ERR(onenand->base);
-
- onenand->phys_base = r->start;
-
- /* Set onenand_chip also */
- this->base = onenand->base;
-
- /* Use runtime badblock check */
- this->options |= ONENAND_SKIP_UNLOCK_CHECK;
-
- if (onenand->type != TYPE_S5PC110) {
- r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- onenand->ahb_addr = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(onenand->ahb_addr))
- return PTR_ERR(onenand->ahb_addr);
-
- /* Allocate 4KiB BufferRAM */
- onenand->page_buf = devm_kzalloc(&pdev->dev, SZ_4K,
- GFP_KERNEL);
- if (!onenand->page_buf)
- return -ENOMEM;
-
- /* Allocate 128 SpareRAM */
- onenand->oob_buf = devm_kzalloc(&pdev->dev, 128, GFP_KERNEL);
- if (!onenand->oob_buf)
- return -ENOMEM;
-
- /* S3C doesn't handle subpage write */
- mtd->subpage_sft = 0;
- this->subpagesize = mtd->writesize;
-
- } else { /* S5PC110 */
- r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- onenand->dma_addr = devm_ioremap_resource(&pdev->dev, r);
- if (IS_ERR(onenand->dma_addr))
- return PTR_ERR(onenand->dma_addr);
-
- s5pc110_dma_ops = s5pc110_dma_poll;
- /* Interrupt support */
- r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (r) {
- init_completion(&onenand->complete);
- s5pc110_dma_ops = s5pc110_dma_irq;
- err = devm_request_irq(&pdev->dev, r->start,
- s5pc110_onenand_irq,
- IRQF_SHARED, "onenand",
- &onenand);
- if (err) {
- dev_err(&pdev->dev, "failed to get irq\n");
- return err;
- }
- }
- }
-
- err = onenand_scan(mtd, 1);
- if (err)
- return err;
-
- if (onenand->type != TYPE_S5PC110) {
- /* S3C doesn't handle subpage write */
- mtd->subpage_sft = 0;
- this->subpagesize = mtd->writesize;
- }
-
- if (s3c_read_reg(MEM_CFG_OFFSET) & ONENAND_SYS_CFG1_SYNC_READ)
- dev_info(&onenand->pdev->dev, "OneNAND Sync. Burst Read enabled\n");
-
- err = mtd_device_register(mtd, pdata ? pdata->parts : NULL,
- pdata ? pdata->nr_parts : 0);
- if (err) {
- dev_err(&pdev->dev, "failed to parse partitions and register the MTD device\n");
- onenand_release(mtd);
- return err;
- }
-
- platform_set_drvdata(pdev, mtd);
-
- return 0;
-}
-
-static int s3c_onenand_remove(struct platform_device *pdev)
-{
- struct mtd_info *mtd = platform_get_drvdata(pdev);
-
- onenand_release(mtd);
-
- return 0;
-}
-
-static int s3c_pm_ops_suspend(struct device *dev)
-{
- struct mtd_info *mtd = dev_get_drvdata(dev);
- struct onenand_chip *this = mtd->priv;
-
- this->wait(mtd, FL_PM_SUSPENDED);
- return 0;
-}
-
-static int s3c_pm_ops_resume(struct device *dev)
-{
- struct mtd_info *mtd = dev_get_drvdata(dev);
- struct onenand_chip *this = mtd->priv;
-
- this->unlock_all(mtd);
- return 0;
-}
-
-static const struct dev_pm_ops s3c_pm_ops = {
- .suspend = s3c_pm_ops_suspend,
- .resume = s3c_pm_ops_resume,
-};
-
-static const struct platform_device_id s3c_onenand_driver_ids[] = {
- {
- .name = "s3c6400-onenand",
- .driver_data = TYPE_S3C6400,
- }, {
- .name = "s3c6410-onenand",
- .driver_data = TYPE_S3C6410,
- }, {
- .name = "s5pc110-onenand",
- .driver_data = TYPE_S5PC110,
- }, { },
-};
-MODULE_DEVICE_TABLE(platform, s3c_onenand_driver_ids);
-
-static struct platform_driver s3c_onenand_driver = {
- .driver = {
- .name = "samsung-onenand",
- .pm = &s3c_pm_ops,
- },
- .id_table = s3c_onenand_driver_ids,
- .probe = s3c_onenand_probe,
- .remove = s3c_onenand_remove,
-};
-
-module_platform_driver(s3c_onenand_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>");
-MODULE_DESCRIPTION("Samsung OneNAND controller support");
projects / linux.git / commitdiff