diff options
author | Vignesh R <vigneshr@ti.com> | 2017-12-29 12:11:02 +0300 |
---|---|---|
committer | Cyrille Pitchen <cyrille.pitchen@wedev4u.fr> | 2018-01-07 20:53:13 +0300 |
commit | e4b580bc04af6b3408a99113d2d69f9dd268eafa (patch) | |
tree | e6a1ec7a0e4e3ce206c460a9464d0f67e7268d8f /drivers/mtd | |
parent | 17407ec3354d291541099b2a7cd71545d9402e14 (diff) | |
download | linux-e4b580bc04af6b3408a99113d2d69f9dd268eafa.tar.xz |
mtd: spi-nor: cadence-quadspi: Refactor indirect read/write sequence.
Move configuring of indirect read/write start address to
cqspi_indirect_*_execute() function and rename cqspi_indirect_*_setup()
function. This will help to reuse cqspi_indirect_*_setup() function for
supporting direct access mode.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Diffstat (limited to 'drivers/mtd')
-rw-r--r-- | drivers/mtd/spi-nor/cadence-quadspi.c | 28 |
1 files changed, 12 insertions, 16 deletions
diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c index 75a2bc447a99..c7bf4d523f9c 100644 --- a/drivers/mtd/spi-nor/cadence-quadspi.c +++ b/drivers/mtd/spi-nor/cadence-quadspi.c @@ -450,8 +450,7 @@ static int cqspi_command_write_addr(struct spi_nor *nor, return cqspi_exec_flash_cmd(cqspi, reg); } -static int cqspi_indirect_read_setup(struct spi_nor *nor, - const unsigned int from_addr) +static int cqspi_read_setup(struct spi_nor *nor) { struct cqspi_flash_pdata *f_pdata = nor->priv; struct cqspi_st *cqspi = f_pdata->cqspi; @@ -459,8 +458,6 @@ static int cqspi_indirect_read_setup(struct spi_nor *nor, unsigned int dummy_clk = 0; unsigned int reg; - writel(from_addr, reg_base + CQSPI_REG_INDIRECTRDSTARTADDR); - reg = nor->read_opcode << CQSPI_REG_RD_INSTR_OPCODE_LSB; reg |= cqspi_calc_rdreg(nor, nor->read_opcode); @@ -493,8 +490,8 @@ static int cqspi_indirect_read_setup(struct spi_nor *nor, return 0; } -static int cqspi_indirect_read_execute(struct spi_nor *nor, - u8 *rxbuf, const unsigned n_rx) +static int cqspi_indirect_read_execute(struct spi_nor *nor, u8 *rxbuf, + loff_t from_addr, const size_t n_rx) { struct cqspi_flash_pdata *f_pdata = nor->priv; struct cqspi_st *cqspi = f_pdata->cqspi; @@ -504,6 +501,7 @@ static int cqspi_indirect_read_execute(struct spi_nor *nor, unsigned int bytes_to_read = 0; int ret = 0; + writel(from_addr, reg_base + CQSPI_REG_INDIRECTRDSTARTADDR); writel(remaining, reg_base + CQSPI_REG_INDIRECTRDBYTES); /* Clear all interrupts. */ @@ -570,8 +568,7 @@ failrd: return ret; } -static int cqspi_indirect_write_setup(struct spi_nor *nor, - const unsigned int to_addr) +static int cqspi_write_setup(struct spi_nor *nor) { unsigned int reg; struct cqspi_flash_pdata *f_pdata = nor->priv; @@ -584,8 +581,6 @@ static int cqspi_indirect_write_setup(struct spi_nor *nor, reg = cqspi_calc_rdreg(nor, nor->program_opcode); writel(reg, reg_base + CQSPI_REG_RD_INSTR); - writel(to_addr, reg_base + CQSPI_REG_INDIRECTWRSTARTADDR); - reg = readl(reg_base + CQSPI_REG_SIZE); reg &= ~CQSPI_REG_SIZE_ADDRESS_MASK; reg |= (nor->addr_width - 1); @@ -593,8 +588,8 @@ static int cqspi_indirect_write_setup(struct spi_nor *nor, return 0; } -static int cqspi_indirect_write_execute(struct spi_nor *nor, - const u8 *txbuf, const unsigned n_tx) +static int cqspi_indirect_write_execute(struct spi_nor *nor, loff_t to_addr, + const u8 *txbuf, const size_t n_tx) { const unsigned int page_size = nor->page_size; struct cqspi_flash_pdata *f_pdata = nor->priv; @@ -604,6 +599,7 @@ static int cqspi_indirect_write_execute(struct spi_nor *nor, unsigned int write_bytes; int ret; + writel(to_addr, reg_base + CQSPI_REG_INDIRECTWRSTARTADDR); writel(remaining, reg_base + CQSPI_REG_INDIRECTWRBYTES); /* Clear all interrupts. */ @@ -900,11 +896,11 @@ static ssize_t cqspi_write(struct spi_nor *nor, loff_t to, if (ret) return ret; - ret = cqspi_indirect_write_setup(nor, to); + ret = cqspi_write_setup(nor); if (ret) return ret; - ret = cqspi_indirect_write_execute(nor, buf, len); + ret = cqspi_indirect_write_execute(nor, to, buf, len); if (ret) return ret; @@ -920,11 +916,11 @@ static ssize_t cqspi_read(struct spi_nor *nor, loff_t from, if (ret) return ret; - ret = cqspi_indirect_read_setup(nor, from); + ret = cqspi_read_setup(nor); if (ret) return ret; - ret = cqspi_indirect_read_execute(nor, buf, len); + ret = cqspi_indirect_read_execute(nor, buf, from, len); if (ret) return ret; |