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Commit 2a5dbead authored by Vipin Kumar's avatar Vipin Kumar Committed by David Woodhouse
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mtd: nand/fsmc: Remove sparse warnings and errors 

This patch removes the sparse below warnings and errors for nand/fsmc driver
/root/vipin/spear/kernel/3.3/linux-3.3/drivers/mtd/nand/fsmc_nand.c:363:31:
warning: incorrect type in initializer (different address spaces)
/root/vipin/spear/kernel/3.3/linux-3.3/drivers/mtd/nand/fsmc_nand.c:363:31:
expected struct fsmc_regs *regs
/root/vipin/spear/kernel/3.3/linux-3.3/drivers/mtd/nand/fsmc_nand.c:363:31:
got void [noderef] <asn:2>*regs_va

[...]
Signed-off-by: default avatarVipin Kumar <vipin.kumar@st.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 4774fb0a
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Showing with 111 additions and 123 deletions
drivers/mtd/nand/fsmc_nand.c
View file @ 2a5dbead
...@@ -360,28 +360,29 @@ static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) ...@@ -360,28 +360,29 @@ static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
struct nand_chip *this = mtd->priv; struct nand_chip *this = mtd->priv;
struct fsmc_nand_data *host = container_of(mtd, struct fsmc_nand_data *host = container_of(mtd,
struct fsmc_nand_data, mtd); struct fsmc_nand_data, mtd);
struct fsmc_regs *regs = host->regs_va; void *__iomem *regs = host->regs_va;
unsigned int bank = host->bank; unsigned int bank = host->bank;
if (ctrl & NAND_CTRL_CHANGE) { if (ctrl & NAND_CTRL_CHANGE) {
u32 pc;
if (ctrl & NAND_CLE) { if (ctrl & NAND_CLE) {
this->IO_ADDR_R = (void __iomem *)host->cmd_va; this->IO_ADDR_R = host->cmd_va;
this->IO_ADDR_W = (void __iomem *)host->cmd_va; this->IO_ADDR_W = host->cmd_va;
} else if (ctrl & NAND_ALE) { } else if (ctrl & NAND_ALE) {
this->IO_ADDR_R = (void __iomem *)host->addr_va; this->IO_ADDR_R = host->addr_va;
this->IO_ADDR_W = (void __iomem *)host->addr_va; this->IO_ADDR_W = host->addr_va;
} else { } else {
this->IO_ADDR_R = (void __iomem *)host->data_va; this->IO_ADDR_R = host->data_va;
this->IO_ADDR_W = (void __iomem *)host->data_va; this->IO_ADDR_W = host->data_va;
} }
if (ctrl & NAND_NCE) { pc = readl(FSMC_NAND_REG(regs, bank, PC));
writel(readl(&regs->bank_regs[bank].pc) | FSMC_ENABLE, if (ctrl & NAND_NCE)
&regs->bank_regs[bank].pc); pc |= FSMC_ENABLE;
} else { else
writel(readl(&regs->bank_regs[bank].pc) & ~FSMC_ENABLE, pc &= ~FSMC_ENABLE;
&regs->bank_regs[bank].pc); writel(pc, FSMC_NAND_REG(regs, bank, PC));
}
} }
mb(); mb();
...@@ -396,7 +397,7 @@ static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) ...@@ -396,7 +397,7 @@ static void fsmc_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
* This routine initializes timing parameters related to NAND memory access in * This routine initializes timing parameters related to NAND memory access in
* FSMC registers * FSMC registers
*/ */
static void fsmc_nand_setup(struct fsmc_regs *regs, uint32_t bank, static void fsmc_nand_setup(void __iomem *regs, uint32_t bank,
uint32_t busw, struct fsmc_nand_timings *timings) uint32_t busw, struct fsmc_nand_timings *timings)
{ {
uint32_t value = FSMC_DEVTYPE_NAND | FSMC_ENABLE | FSMC_WAITON; uint32_t value = FSMC_DEVTYPE_NAND | FSMC_ENABLE | FSMC_WAITON;
...@@ -424,14 +425,14 @@ static void fsmc_nand_setup(struct fsmc_regs *regs, uint32_t bank, ...@@ -424,14 +425,14 @@ static void fsmc_nand_setup(struct fsmc_regs *regs, uint32_t bank,
tset = (tims->tset & FSMC_TSET_MASK) << FSMC_TSET_SHIFT; tset = (tims->tset & FSMC_TSET_MASK) << FSMC_TSET_SHIFT;
if (busw) if (busw)
writel(value | FSMC_DEVWID_16, &regs->bank_regs[bank].pc); writel(value | FSMC_DEVWID_16, FSMC_NAND_REG(regs, bank, PC));
else else
writel(value | FSMC_DEVWID_8, &regs->bank_regs[bank].pc); writel(value | FSMC_DEVWID_8, FSMC_NAND_REG(regs, bank, PC));
writel(readl(&regs->bank_regs[bank].pc) | tclr | tar, writel(readl(FSMC_NAND_REG(regs, bank, PC)) | tclr | tar,
&regs->bank_regs[bank].pc); FSMC_NAND_REG(regs, bank, PC));
writel(thiz | thold | twait | tset, &regs->bank_regs[bank].comm); writel(thiz | thold | twait | tset, FSMC_NAND_REG(regs, bank, COMM));
writel(thiz | thold | twait | tset, &regs->bank_regs[bank].attrib); writel(thiz | thold | twait | tset, FSMC_NAND_REG(regs, bank, ATTRIB));
} }
/* /*
...@@ -441,15 +442,15 @@ static void fsmc_enable_hwecc(struct mtd_info *mtd, int mode) ...@@ -441,15 +442,15 @@ static void fsmc_enable_hwecc(struct mtd_info *mtd, int mode)
{ {
struct fsmc_nand_data *host = container_of(mtd, struct fsmc_nand_data *host = container_of(mtd,
struct fsmc_nand_data, mtd); struct fsmc_nand_data, mtd);
struct fsmc_regs *regs = host->regs_va; void __iomem *regs = host->regs_va;
uint32_t bank = host->bank; uint32_t bank = host->bank;
writel(readl(&regs->bank_regs[bank].pc) & ~FSMC_ECCPLEN_256, writel(readl(FSMC_NAND_REG(regs, bank, PC)) & ~FSMC_ECCPLEN_256,
&regs->bank_regs[bank].pc); FSMC_NAND_REG(regs, bank, PC));
writel(readl(&regs->bank_regs[bank].pc) & ~FSMC_ECCEN, writel(readl(FSMC_NAND_REG(regs, bank, PC)) & ~FSMC_ECCEN,
&regs->bank_regs[bank].pc); FSMC_NAND_REG(regs, bank, PC));
writel(readl(&regs->bank_regs[bank].pc) | FSMC_ECCEN, writel(readl(FSMC_NAND_REG(regs, bank, PC)) | FSMC_ECCEN,
&regs->bank_regs[bank].pc); FSMC_NAND_REG(regs, bank, PC));
} }
/* /*
...@@ -462,13 +463,13 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data, ...@@ -462,13 +463,13 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data,
{ {
struct fsmc_nand_data *host = container_of(mtd, struct fsmc_nand_data *host = container_of(mtd,
struct fsmc_nand_data, mtd); struct fsmc_nand_data, mtd);
struct fsmc_regs *regs = host->regs_va; void __iomem *regs = host->regs_va;
uint32_t bank = host->bank; uint32_t bank = host->bank;
uint32_t ecc_tmp; uint32_t ecc_tmp;
unsigned long deadline = jiffies + FSMC_BUSY_WAIT_TIMEOUT; unsigned long deadline = jiffies + FSMC_BUSY_WAIT_TIMEOUT;
do { do {
if (readl(&regs->bank_regs[bank].sts) & FSMC_CODE_RDY) if (readl(FSMC_NAND_REG(regs, bank, STS)) & FSMC_CODE_RDY)
break; break;
else else
cond_resched(); cond_resched();
...@@ -479,25 +480,25 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data, ...@@ -479,25 +480,25 @@ static int fsmc_read_hwecc_ecc4(struct mtd_info *mtd, const uint8_t *data,
return -ETIMEDOUT; return -ETIMEDOUT;
} }
ecc_tmp = readl(&regs->bank_regs[bank].ecc1); ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC1));
ecc[0] = (uint8_t) (ecc_tmp >> 0); ecc[0] = (uint8_t) (ecc_tmp >> 0);
ecc[1] = (uint8_t) (ecc_tmp >> 8); ecc[1] = (uint8_t) (ecc_tmp >> 8);
ecc[2] = (uint8_t) (ecc_tmp >> 16); ecc[2] = (uint8_t) (ecc_tmp >> 16);
ecc[3] = (uint8_t) (ecc_tmp >> 24); ecc[3] = (uint8_t) (ecc_tmp >> 24);
ecc_tmp = readl(&regs->bank_regs[bank].ecc2); ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC2));
ecc[4] = (uint8_t) (ecc_tmp >> 0); ecc[4] = (uint8_t) (ecc_tmp >> 0);
ecc[5] = (uint8_t) (ecc_tmp >> 8); ecc[5] = (uint8_t) (ecc_tmp >> 8);
ecc[6] = (uint8_t) (ecc_tmp >> 16); ecc[6] = (uint8_t) (ecc_tmp >> 16);
ecc[7] = (uint8_t) (ecc_tmp >> 24); ecc[7] = (uint8_t) (ecc_tmp >> 24);
ecc_tmp = readl(&regs->bank_regs[bank].ecc3); ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC3));
ecc[8] = (uint8_t) (ecc_tmp >> 0); ecc[8] = (uint8_t) (ecc_tmp >> 0);
ecc[9] = (uint8_t) (ecc_tmp >> 8); ecc[9] = (uint8_t) (ecc_tmp >> 8);
ecc[10] = (uint8_t) (ecc_tmp >> 16); ecc[10] = (uint8_t) (ecc_tmp >> 16);
ecc[11] = (uint8_t) (ecc_tmp >> 24); ecc[11] = (uint8_t) (ecc_tmp >> 24);
ecc_tmp = readl(&regs->bank_regs[bank].sts); ecc_tmp = readl(FSMC_NAND_REG(regs, bank, STS));
ecc[12] = (uint8_t) (ecc_tmp >> 16); ecc[12] = (uint8_t) (ecc_tmp >> 16);
return 0; return 0;
...@@ -513,11 +514,11 @@ static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data, ...@@ -513,11 +514,11 @@ static int fsmc_read_hwecc_ecc1(struct mtd_info *mtd, const uint8_t *data,
{ {
struct fsmc_nand_data *host = container_of(mtd, struct fsmc_nand_data *host = container_of(mtd,
struct fsmc_nand_data, mtd); struct fsmc_nand_data, mtd);
struct fsmc_regs *regs = host->regs_va; void __iomem *regs = host->regs_va;
uint32_t bank = host->bank; uint32_t bank = host->bank;
uint32_t ecc_tmp; uint32_t ecc_tmp;
ecc_tmp = readl(&regs->bank_regs[bank].ecc1); ecc_tmp = readl(FSMC_NAND_REG(regs, bank, ECC1));
ecc[0] = (uint8_t) (ecc_tmp >> 0); ecc[0] = (uint8_t) (ecc_tmp >> 0);
ecc[1] = (uint8_t) (ecc_tmp >> 8); ecc[1] = (uint8_t) (ecc_tmp >> 8);
ecc[2] = (uint8_t) (ecc_tmp >> 16); ecc[2] = (uint8_t) (ecc_tmp >> 16);
...@@ -771,13 +772,13 @@ static int fsmc_bch8_correct_data(struct mtd_info *mtd, uint8_t *dat, ...@@ -771,13 +772,13 @@ static int fsmc_bch8_correct_data(struct mtd_info *mtd, uint8_t *dat,
struct fsmc_nand_data *host = container_of(mtd, struct fsmc_nand_data *host = container_of(mtd,
struct fsmc_nand_data, mtd); struct fsmc_nand_data, mtd);
struct nand_chip *chip = mtd->priv; struct nand_chip *chip = mtd->priv;
struct fsmc_regs *regs = host->regs_va; void __iomem *regs = host->regs_va;
unsigned int bank = host->bank; unsigned int bank = host->bank;
uint32_t err_idx[8]; uint32_t err_idx[8];
uint32_t num_err, i; uint32_t num_err, i;
uint32_t ecc1, ecc2, ecc3, ecc4; uint32_t ecc1, ecc2, ecc3, ecc4;
num_err = (readl(&regs->bank_regs[bank].sts) >> 10) & 0xF; num_err = (readl(FSMC_NAND_REG(regs, bank, STS)) >> 10) & 0xF;
/* no bit flipping */ /* no bit flipping */
if (likely(num_err == 0)) if (likely(num_err == 0))
...@@ -820,10 +821,10 @@ static int fsmc_bch8_correct_data(struct mtd_info *mtd, uint8_t *dat, ...@@ -820,10 +821,10 @@ static int fsmc_bch8_correct_data(struct mtd_info *mtd, uint8_t *dat,
* uint64_t array and error offset indexes are populated in err_idx * uint64_t array and error offset indexes are populated in err_idx
* array * array
*/ */
ecc1 = readl(&regs->bank_regs[bank].ecc1); ecc1 = readl(FSMC_NAND_REG(regs, bank, ECC1));
ecc2 = readl(&regs->bank_regs[bank].ecc2); ecc2 = readl(FSMC_NAND_REG(regs, bank, ECC2));
ecc3 = readl(&regs->bank_regs[bank].ecc3); ecc3 = readl(FSMC_NAND_REG(regs, bank, ECC3));
ecc4 = readl(&regs->bank_regs[bank].sts); ecc4 = readl(FSMC_NAND_REG(regs, bank, STS));
err_idx[0] = (ecc1 >> 0) & 0x1FFF; err_idx[0] = (ecc1 >> 0) & 0x1FFF;
err_idx[1] = (ecc1 >> 13) & 0x1FFF; err_idx[1] = (ecc1 >> 13) & 0x1FFF;
...@@ -863,7 +864,6 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) ...@@ -863,7 +864,6 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
struct fsmc_nand_data *host; struct fsmc_nand_data *host;
struct mtd_info *mtd; struct mtd_info *mtd;
struct nand_chip *nand; struct nand_chip *nand;
struct fsmc_regs *regs;
struct resource *res; struct resource *res;
dma_cap_mask_t mask; dma_cap_mask_t mask;
int ret = 0; int ret = 0;
...@@ -976,8 +976,6 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) ...@@ -976,8 +976,6 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
if (host->mode == USE_DMA_ACCESS) if (host->mode == USE_DMA_ACCESS)
init_completion(&host->dma_access_complete); init_completion(&host->dma_access_complete);
regs = host->regs_va;
/* Link all private pointers */ /* Link all private pointers */
mtd = &host->mtd; mtd = &host->mtd;
nand = &host->nand; nand = &host->nand;
...@@ -1027,7 +1025,8 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) ...@@ -1027,7 +1025,8 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
break; break;
} }
fsmc_nand_setup(regs, host->bank, nand->options & NAND_BUSWIDTH_16, fsmc_nand_setup(host->regs_va, host->bank,
nand->options & NAND_BUSWIDTH_16,
host->dev_timings); host->dev_timings);
if (AMBA_REV_BITS(host->pid) >= 8) { if (AMBA_REV_BITS(host->pid) >= 8) {
......
include/linux/mtd/fsmc.h
View file @ 2a5dbead
...@@ -32,88 +32,77 @@ ...@@ -32,88 +32,77 @@
#define FSMC_FLASH_WIDTH8 1 #define FSMC_FLASH_WIDTH8 1
#define FSMC_FLASH_WIDTH16 2 #define FSMC_FLASH_WIDTH16 2
struct fsmc_nor_bank_regs { /* fsmc controller registers for NOR flash */
uint32_t ctrl; #define CTRL 0x0
uint32_t ctrl_tim; /* ctrl register definitions */
}; #define BANK_ENABLE (1 << 0)
#define MUXED (1 << 1)
/* ctrl register definitions */ #define NOR_DEV (2 << 2)
#define BANK_ENABLE (1 << 0) #define WIDTH_8 (0 << 4)
#define MUXED (1 << 1) #define WIDTH_16 (1 << 4)
#define NOR_DEV (2 << 2) #define RSTPWRDWN (1 << 6)
#define WIDTH_8 (0 << 4) #define WPROT (1 << 7)
#define WIDTH_16 (1 << 4) #define WRT_ENABLE (1 << 12)
#define RSTPWRDWN (1 << 6) #define WAIT_ENB (1 << 13)
#define WPROT (1 << 7)
#define WRT_ENABLE (1 << 12) #define CTRL_TIM 0x4
#define WAIT_ENB (1 << 13) /* ctrl_tim register definitions */
/* ctrl_tim register definitions */ #define FSMC_NOR_BANK_SZ 0x8
struct fsmc_nand_bank_regs {
uint32_t pc;
uint32_t sts;
uint32_t comm;
uint32_t attrib;
uint32_t ioata;
uint32_t ecc1;
uint32_t ecc2;
uint32_t ecc3;
};
#define FSMC_NOR_REG_SIZE 0x40 #define FSMC_NOR_REG_SIZE 0x40
struct fsmc_regs { #define FSMC_NOR_REG(base, bank, reg) (base + \
struct fsmc_nor_bank_regs nor_bank_regs[FSMC_MAX_NOR_BANKS]; FSMC_NOR_BANK_SZ * (bank) + \
uint8_t reserved_1[0x40 - 0x20]; reg)
struct fsmc_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS];
uint8_t reserved_2[0xfe0 - 0xc0]; /* fsmc controller registers for NAND flash */
uint32_t peripid0; /* 0xfe0 */ #define PC 0x00
uint32_t peripid1; /* 0xfe4 */ /* pc register definitions */
uint32_t peripid2; /* 0xfe8 */ #define FSMC_RESET (1 << 0)
uint32_t peripid3; /* 0xfec */ #define FSMC_WAITON (1 << 1)
uint32_t pcellid0; /* 0xff0 */ #define FSMC_ENABLE (1 << 2)
uint32_t pcellid1; /* 0xff4 */ #define FSMC_DEVTYPE_NAND (1 << 3)
uint32_t pcellid2; /* 0xff8 */ #define FSMC_DEVWID_8 (0 << 4)
uint32_t pcellid3; /* 0xffc */ #define FSMC_DEVWID_16 (1 << 4)
}; #define FSMC_ECCEN (1 << 6)
#define FSMC_ECCPLEN_512 (0 << 7)
#define FSMC_ECCPLEN_256 (1 << 7)
#define FSMC_TCLR_1 (1)
#define FSMC_TCLR_SHIFT (9)
#define FSMC_TCLR_MASK (0xF)
#define FSMC_TAR_1 (1)
#define FSMC_TAR_SHIFT (13)
#define FSMC_TAR_MASK (0xF)
#define STS 0x04
/* sts register definitions */
#define FSMC_CODE_RDY (1 << 15)
#define COMM 0x08
/* comm register definitions */
#define FSMC_TSET_0 0
#define FSMC_TSET_SHIFT 0
#define FSMC_TSET_MASK 0xFF
#define FSMC_TWAIT_6 6
#define FSMC_TWAIT_SHIFT 8
#define FSMC_TWAIT_MASK 0xFF
#define FSMC_THOLD_4 4
#define FSMC_THOLD_SHIFT 16
#define FSMC_THOLD_MASK 0xFF
#define FSMC_THIZ_1 1
#define FSMC_THIZ_SHIFT 24
#define FSMC_THIZ_MASK 0xFF
#define ATTRIB 0x0C
#define IOATA 0x10
#define ECC1 0x14
#define ECC2 0x18
#define ECC3 0x1C
#define FSMC_NAND_BANK_SZ 0x20
#define FSMC_NAND_REG(base, bank, reg) (base + FSMC_NOR_REG_SIZE + \
(FSMC_NAND_BANK_SZ * (bank)) + \
reg)
#define FSMC_BUSY_WAIT_TIMEOUT (1 * HZ) #define FSMC_BUSY_WAIT_TIMEOUT (1 * HZ)
/* pc register definitions */
#define FSMC_RESET (1 << 0)
#define FSMC_WAITON (1 << 1)
#define FSMC_ENABLE (1 << 2)
#define FSMC_DEVTYPE_NAND (1 << 3)
#define FSMC_DEVWID_8 (0 << 4)
#define FSMC_DEVWID_16 (1 << 4)
#define FSMC_ECCEN (1 << 6)
#define FSMC_ECCPLEN_512 (0 << 7)
#define FSMC_ECCPLEN_256 (1 << 7)
#define FSMC_TCLR_1 (1)
#define FSMC_TCLR_SHIFT (9)
#define FSMC_TCLR_MASK (0xF)
#define FSMC_TAR_1 (1)
#define FSMC_TAR_SHIFT (13)
#define FSMC_TAR_MASK (0xF)
/* sts register definitions */
#define FSMC_CODE_RDY (1 << 15)
/* comm register definitions */
#define FSMC_TSET_0 0
#define FSMC_TSET_SHIFT 0
#define FSMC_TSET_MASK 0xFF
#define FSMC_TWAIT_6 6
#define FSMC_TWAIT_SHIFT 8
#define FSMC_TWAIT_MASK 0xFF
#define FSMC_THOLD_4 4
#define FSMC_THOLD_SHIFT 16
#define FSMC_THOLD_MASK 0xFF
#define FSMC_THIZ_1 1
#define FSMC_THIZ_SHIFT 24
#define FSMC_THIZ_MASK 0xFF
/* /*
* There are 13 bytes of ecc for every 512 byte block in FSMC version 8 * There are 13 bytes of ecc for every 512 byte block in FSMC version 8
* and it has to be read consecutively and immediately after the 512 * and it has to be read consecutively and immediately after the 512
......
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