[PATCH v4 02/20] mtd: spi-nor: Print debug info inside Reg Ops methods

Vignesh Raghavendra vigneshr at ti.com
Tue Nov 5 04:13:58 PST 2019



On 02/11/19 4:53 PM, Tudor.Ambarus at microchip.com wrote:
> From: Tudor Ambarus <tudor.ambarus at microchip.com>
> 
> Spare the callers of printing debug messages by themselves.
> 
> Signed-off-by: Tudor Ambarus <tudor.ambarus at microchip.com>

Reviewed-by: Vignesh Raghavendra <vigneshr at ti.com>

Regards
Vignesh

> ---
>  drivers/mtd/spi-nor/spi-nor.c | 169 +++++++++++++++++++++++++++++++-----------
>  1 file changed, 127 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index eca6bce7c336..0cb3122e74ad 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -394,6 +394,8 @@ static ssize_t spi_nor_write_data(struct spi_nor *nor, loff_t to, size_t len,
>   */
>  static int spi_nor_write_enable(struct spi_nor *nor)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WREN, 1),
> @@ -401,10 +403,16 @@ static int spi_nor_write_enable(struct spi_nor *nor)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_NO_DATA);
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_WREN,
> +						     NULL, 0);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_WREN, NULL, 0);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d on Write Enable\n", ret);
> +
> +	return ret;
>  }
>  
>  /*
> @@ -412,6 +420,8 @@ static int spi_nor_write_enable(struct spi_nor *nor)
>   */
>  static int spi_nor_write_disable(struct spi_nor *nor)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRDI, 1),
> @@ -419,10 +429,16 @@ static int spi_nor_write_disable(struct spi_nor *nor)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_NO_DATA);
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_WRDI,
> +						     NULL, 0);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_WRDI, NULL, 0);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d on Write Disable\n", ret);
> +
> +	return ret;
>  }
>  
>  /**
> @@ -524,6 +540,8 @@ static int spi_nor_read_cr(struct spi_nor *nor, u8 *cr)
>   */
>  static int spi_nor_write_sr(struct spi_nor *nor, u8 val)
>  {
> +	int ret;
> +
>  	nor->bouncebuf[0] = val;
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
> @@ -532,15 +550,23 @@ static int spi_nor_write_sr(struct spi_nor *nor, u8 val)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_DATA_OUT(1, nor->bouncebuf, 1));
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_WRSR,
> +						     nor->bouncebuf, 1);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_WRSR,
> -					      nor->bouncebuf, 1);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d writing SR\n", ret);
> +
> +	return ret;
> +
>  }
>  
>  static int macronix_set_4byte(struct spi_nor *nor, bool enable)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(enable ?
> @@ -551,12 +577,18 @@ static int macronix_set_4byte(struct spi_nor *nor, bool enable)
>  				  SPI_MEM_OP_NO_DUMMY,
>  				  SPI_MEM_OP_NO_DATA);
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor,
> +						     enable ? SPINOR_OP_EN4B :
> +							      SPINOR_OP_EX4B,
> +						     NULL, 0);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, enable ? SPINOR_OP_EN4B :
> -							    SPINOR_OP_EX4B,
> -					      NULL, 0);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d setting 4-byte mode\n", ret);
> +
> +	return ret;
>  }
>  
>  static int st_micron_set_4byte(struct spi_nor *nor, bool enable)
> @@ -572,6 +604,8 @@ static int st_micron_set_4byte(struct spi_nor *nor, bool enable)
>  
>  static int spansion_set_4byte(struct spi_nor *nor, bool enable)
>  {
> +	int ret;
> +
>  	nor->bouncebuf[0] = enable << 7;
>  
>  	if (nor->spimem) {
> @@ -581,15 +615,22 @@ static int spansion_set_4byte(struct spi_nor *nor, bool enable)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_DATA_OUT(1, nor->bouncebuf, 1));
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_BRWR,
> +						     nor->bouncebuf, 1);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_BRWR,
> -					      nor->bouncebuf, 1);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d setting 4-byte mode\n", ret);
> +
> +	return ret;
>  }
>  
>  static int spi_nor_write_ear(struct spi_nor *nor, u8 ear)
>  {
> +	int ret;
> +
>  	nor->bouncebuf[0] = ear;
>  
>  	if (nor->spimem) {
> @@ -599,11 +640,16 @@ static int spi_nor_write_ear(struct spi_nor *nor, u8 ear)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_DATA_OUT(1, nor->bouncebuf, 1));
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_WREAR,
> +						     nor->bouncebuf, 1);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_WREAR,
> -					      nor->bouncebuf, 1);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d writing EAR\n", ret);
> +
> +	return ret;
>  }
>  
>  static int winbond_set_4byte(struct spi_nor *nor, bool enable)
> @@ -628,6 +674,8 @@ static int winbond_set_4byte(struct spi_nor *nor, bool enable)
>  
>  static int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_XRDSR, 1),
> @@ -635,10 +683,16 @@ static int spi_nor_xread_sr(struct spi_nor *nor, u8 *sr)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_DATA_IN(1, sr, 1));
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->read_reg(nor, SPINOR_OP_XRDSR,
> +						    sr, 1);
>  	}
>  
> -	return nor->controller_ops->read_reg(nor, SPINOR_OP_XRDSR, sr, 1);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d reading XRDSR\n", ret);
> +
> +	return ret;
>  }
>  
>  static int s3an_sr_ready(struct spi_nor *nor)
> @@ -646,16 +700,16 @@ static int s3an_sr_ready(struct spi_nor *nor)
>  	int ret;
>  
>  	ret = spi_nor_xread_sr(nor, nor->bouncebuf);
> -	if (ret) {
> -		dev_dbg(nor->dev, "error %d reading XRDSR\n", ret);
> +	if (ret)
>  		return ret;
> -	}
>  
>  	return !!(nor->bouncebuf[0] & XSR_RDY);
>  }
>  
>  static int spi_nor_clear_sr(struct spi_nor *nor)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLSR, 1),
> @@ -663,10 +717,16 @@ static int spi_nor_clear_sr(struct spi_nor *nor)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_NO_DATA);
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_CLSR,
> +						     NULL, 0);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_CLSR, NULL, 0);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d clearing SR\n", ret);
> +
> +	return ret;
>  }
>  
>  static int spi_nor_sr_ready(struct spi_nor *nor)
> @@ -692,6 +752,8 @@ static int spi_nor_sr_ready(struct spi_nor *nor)
>  
>  static int spi_nor_clear_fsr(struct spi_nor *nor)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLFSR, 1),
> @@ -699,10 +761,16 @@ static int spi_nor_clear_fsr(struct spi_nor *nor)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_NO_DATA);
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_CLFSR,
> +						     NULL, 0);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_CLFSR, NULL, 0);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d clearing FSR\n", ret);
> +
> +	return ret;
>  }
>  
>  static int spi_nor_fsr_ready(struct spi_nor *nor)
> @@ -839,6 +907,8 @@ static int spi_nor_write_sr_and_check(struct spi_nor *nor, u8 status_new,
>  
>  static int spi_nor_write_sr2(struct spi_nor *nor, const u8 *sr2)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRSR2, 1),
> @@ -846,14 +916,22 @@ static int spi_nor_write_sr2(struct spi_nor *nor, const u8 *sr2)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_DATA_OUT(1, sr2, 1));
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_WRSR2,
> +						     sr2, 1);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_WRSR2, sr2, 1);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d writing SR2\n", ret);
> +
> +	return ret;
>  }
>  
>  static int spi_nor_read_sr2(struct spi_nor *nor, u8 *sr2)
>  {
> +	int ret;
> +
>  	if (nor->spimem) {
>  		struct spi_mem_op op =
>  			SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RDSR2, 1),
> @@ -861,10 +939,16 @@ static int spi_nor_read_sr2(struct spi_nor *nor, u8 *sr2)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_DATA_IN(1, sr2, 1));
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->read_reg(nor, SPINOR_OP_RDSR2,
> +						    sr2, 1);
>  	}
>  
> -	return nor->controller_ops->read_reg(nor, SPINOR_OP_RDSR2, sr2, 1);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d reading SR2\n", ret);
> +
> +	return ret;
>  }
>  
>  /*
> @@ -874,6 +958,8 @@ static int spi_nor_read_sr2(struct spi_nor *nor, u8 *sr2)
>   */
>  static int spi_nor_erase_chip(struct spi_nor *nor)
>  {
> +	int ret;
> +
>  	dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd.size >> 10));
>  
>  	if (nor->spimem) {
> @@ -883,11 +969,16 @@ static int spi_nor_erase_chip(struct spi_nor *nor)
>  				   SPI_MEM_OP_NO_DUMMY,
>  				   SPI_MEM_OP_NO_DATA);
>  
> -		return spi_mem_exec_op(nor->spimem, &op);
> +		ret = spi_mem_exec_op(nor->spimem, &op);
> +	} else {
> +		ret = nor->controller_ops->write_reg(nor, SPINOR_OP_CHIP_ERASE,
> +						     NULL, 0);
>  	}
>  
> -	return nor->controller_ops->write_reg(nor, SPINOR_OP_CHIP_ERASE,
> -					      NULL, 0);
> +	if (ret)
> +		dev_dbg(nor->dev, "error %d erasing chip\n", ret);
> +
> +	return ret;
>  }
>  
>  static struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd)
> @@ -1934,10 +2025,8 @@ static int sr2_bit7_quad_enable(struct spi_nor *nor)
>  	spi_nor_write_enable(nor);
>  
>  	ret = spi_nor_write_sr2(nor, sr2);
> -	if (ret) {
> -		dev_dbg(nor->dev, "error while writing status register 2\n");
> +	if (ret)
>  		return ret;
> -	}
>  
>  	ret = spi_nor_wait_till_ready(nor);
>  	if (ret)
> @@ -1977,10 +2066,8 @@ static int spi_nor_clear_sr_bp(struct spi_nor *nor)
>  	spi_nor_write_enable(nor);
>  
>  	ret = spi_nor_write_sr(nor, nor->bouncebuf[0] & ~mask);
> -	if (ret) {
> -		dev_dbg(nor->dev, "write to status register failed\n");
> +	if (ret)
>  		return ret;
> -	}
>  
>  	return spi_nor_wait_till_ready(nor);
>  }
> @@ -2739,10 +2826,8 @@ static int s3an_nor_setup(struct spi_nor *nor,
>  	int ret;
>  
>  	ret = spi_nor_xread_sr(nor, nor->bouncebuf);
> -	if (ret) {
> -		dev_dbg(nor->dev, "error %d reading XRDSR\n", ret);
> +	if (ret)
>  		return ret;
> -	}
>  
>  	nor->erase_opcode = SPINOR_OP_XSE;
>  	nor->program_opcode = SPINOR_OP_XPP;
> 





More information about the linux-mtd mailing list