From: Jagan Teki <jteki@openedev.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v4 04/21] sf: Optimize BAR write code
Date: Mon, 12 Oct 2015 20:30:57 +0530 [thread overview]
Message-ID: <1444662074-2424-5-git-send-email-jteki@openedev.com> (raw)
In-Reply-To: <1444662074-2424-1-git-send-email-jteki@openedev.com>
Optimized spi-flash bar writing code and also removed
unnecessary bank_sel in read_ops.
Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
---
Changes for v4, v3, v2:
- none
drivers/mtd/spi/sf_ops.c | 41 +++++++++++++----------------------------
1 file changed, 13 insertions(+), 28 deletions(-)
diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c
index b33fe5a..6e457ec 100644
--- a/drivers/mtd/spi/sf_ops.c
+++ b/drivers/mtd/spi/sf_ops.c
@@ -95,15 +95,14 @@ int spi_flash_cmd_write_config(struct spi_flash *flash, u8 wc)
#endif
#ifdef CONFIG_SPI_FLASH_BAR
-static int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel)
+static int spi_flash_write_bank(struct spi_flash *flash, u32 offset)
{
- u8 cmd;
+ u8 cmd, bank_sel;
int ret;
- if (flash->bank_curr == bank_sel) {
- debug("SF: not require to enable bank%d\n", bank_sel);
- return bank_sel;
- }
+ bank_sel = offset / (SPI_FLASH_16MB_BOUN << flash->shift);
+ if (bank_sel == flash->bank_curr)
+ goto bar_end;
cmd = flash->bank_write_cmd;
ret = spi_flash_write_common(flash, &cmd, 1, &bank_sel, 1);
@@ -111,25 +110,10 @@ static int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel)
debug("SF: fail to write bank register\n");
return ret;
}
- flash->bank_curr = bank_sel;
-
- return 0;
-}
-
-static int spi_flash_bank(struct spi_flash *flash, u32 offset)
-{
- u8 bank_sel;
- int ret;
-
- bank_sel = offset / (SPI_FLASH_16MB_BOUN << flash->shift);
-
- ret = spi_flash_cmd_bankaddr_write(flash, bank_sel);
- if (ret) {
- debug("SF: fail to set bank%d\n", bank_sel);
- return ret;
- }
- return bank_sel;
+bar_end:
+ flash->bank_curr = bank_sel;
+ return flash->bank_curr;
}
#endif
@@ -285,7 +269,7 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
spi_flash_dual_flash(flash, &erase_addr);
#endif
#ifdef CONFIG_SPI_FLASH_BAR
- ret = spi_flash_bank(flash, erase_addr);
+ ret = spi_flash_write_bank(flash, erase_addr);
if (ret < 0)
return ret;
#endif
@@ -327,7 +311,7 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
spi_flash_dual_flash(flash, &write_addr);
#endif
#ifdef CONFIG_SPI_FLASH_BAR
- ret = spi_flash_bank(flash, write_addr);
+ ret = spi_flash_write_bank(flash, write_addr);
if (ret < 0)
return ret;
#endif
@@ -422,9 +406,10 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
spi_flash_dual_flash(flash, &read_addr);
#endif
#ifdef CONFIG_SPI_FLASH_BAR
- bank_sel = spi_flash_bank(flash, read_addr);
- if (bank_sel < 0)
+ ret = spi_flash_write_bank(flash, read_addr);
+ if (ret < 0)
return ret;
+ bank_sel = flash->bank_curr;
#endif
remain_len = ((SPI_FLASH_16MB_BOUN << flash->shift) *
(bank_sel + 1)) - offset;
--
1.9.1
next prev parent reply other threads:[~2015-10-12 15:00 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-12 15:00 [U-Boot] [PATCH v4 00/21] sf: Tunning spi-flash layer Jagan Teki
2015-10-12 15:00 ` [U-Boot] [PATCH v4 01/21] spi: zynq_spi: Remove unneeded headers Jagan Teki
2015-10-25 7:32 ` Jagan Teki
2015-10-12 15:00 ` [U-Boot] [PATCH v4 02/21] sf: Return bank_sel, if flash->bank_curr == bank_sel Jagan Teki
2015-10-25 7:33 ` Jagan Teki
2015-10-12 15:00 ` [U-Boot] [PATCH v4 03/21] sf: Add spi_flash_read_bar Jagan Teki
2015-10-25 7:35 ` Jagan Teki
2015-10-12 15:00 ` Jagan Teki [this message]
2015-10-25 7:36 ` [U-Boot] [PATCH v4 04/21] sf: Optimize BAR write code Jagan Teki
2015-10-12 15:00 ` [U-Boot] [PATCH v4 05/21] sf: Make flash->flags use for generic usage Jagan Teki
2015-10-25 7:38 ` Jagan Teki
2015-11-16 2:59 ` Bin Meng
2015-11-18 1:14 ` Bin Meng
2015-11-18 1:27 ` Tom Rini
2015-11-18 6:58 ` Jagan Teki
2015-10-12 15:00 ` [U-Boot] [PATCH v4 06/21] sf: Update status reg check in spi_flash_cmd_wait_ready Jagan Teki
2015-10-25 7:39 ` Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 07/21] sf: Add FSR support to spi_flash_cmd_wait_ready Jagan Teki
2015-10-25 7:40 ` Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 08/21] sf: spi_flash_validate_params => spi_flash_scan Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 09/21] sf: Move spi_flash_scan code to sf_ops Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 10/21] sf: Move the read_id " Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 11/21] sf: Move BAR defined code at once place Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 12/21] sf: Use static for file-scope functions Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 13/21] sf: Fix Makefile Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 14/21] sf: Use simple name for register access functions Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 15/21] sf: Use flash function pointers in dm_spi_flash_ops Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 16/21] sf: Flash power up read-only based on idcode0 Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 17/21] sf: Use static for file-scope functions Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 18/21] sf: Remove unneeded header includes Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 19/21] sf: probe: Use spi_flash_scan in dm-spi-flash Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 20/21] sf: Re-factorize spi_flash_probe_tail code Jagan Teki
2015-10-12 15:01 ` [U-Boot] [PATCH v4 21/21] dm-sf: Re-factorize spi_flash_std_probe code Jagan Teki
2015-10-18 20:27 ` [U-Boot] [PATCH v4 00/21] sf: Tunning spi-flash layer Simon Glass
2015-10-19 9:28 ` Jagan Teki
2015-10-28 18:47 ` Simon Glass
2015-10-28 19:08 ` Jagan Teki
2015-10-29 23:25 ` Simon Glass
2015-10-30 20:02 ` Jagan Teki
2015-10-30 20:30 ` Marek Vasut
2015-10-30 20:33 ` Jagan Teki
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