From: Jagan Teki <jteki@openedev.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v4 03/21] sf: Add spi_flash_read_bar
Date: Mon, 12 Oct 2015 20:30:56 +0530 [thread overview]
Message-ID: <1444662074-2424-4-git-send-email-jteki@openedev.com> (raw)
In-Reply-To: <1444662074-2424-1-git-send-email-jteki@openedev.com>
Add spi_flash_read_bar function for reading bar and
discovering bar commands at probe time.
Signed-off-by: Jagan Teki <jteki@openedev.com>
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_probe.c | 53 +++++++++++++++++++++++++++++-----------------
1 file changed, 34 insertions(+), 19 deletions(-)
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index 954376d..f17ec17 100644
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -99,6 +99,37 @@ static int spi_flash_set_qeb(struct spi_flash *flash, u8 idcode0)
}
}
+#ifdef CONFIG_SPI_FLASH_BAR
+static int spi_flash_read_bank(struct spi_flash *flash, u8 idcode0)
+{
+ u8 curr_bank = 0;
+ int ret;
+
+ if (flash->size <= SPI_FLASH_16MB_BOUN)
+ goto bank_end;
+
+ switch (idcode0) {
+ case SPI_FLASH_CFI_MFR_SPANSION:
+ flash->bank_read_cmd = CMD_BANKADDR_BRRD;
+ flash->bank_write_cmd = CMD_BANKADDR_BRWR;
+ default:
+ flash->bank_read_cmd = CMD_EXTNADDR_RDEAR;
+ flash->bank_write_cmd = CMD_EXTNADDR_WREAR;
+ }
+
+ ret = spi_flash_read_common(flash, &flash->bank_read_cmd, 1,
+ &curr_bank, 1);
+ if (ret) {
+ debug("SF: fail to read bank addr register\n");
+ return ret;
+ }
+
+bank_end:
+ flash->bank_curr = curr_bank;
+ return 0;
+}
+#endif
+
static int spi_flash_validate_params(struct spi_slave *spi, u8 *idcode,
struct spi_flash *flash)
{
@@ -235,25 +266,9 @@ static int spi_flash_validate_params(struct spi_slave *spi, u8 *idcode,
/* Configure the BAR - discover bank cmds and read current bank */
#ifdef CONFIG_SPI_FLASH_BAR
- u8 curr_bank = 0;
- if (flash->size > SPI_FLASH_16MB_BOUN) {
- int ret;
-
- flash->bank_read_cmd = (idcode[0] == 0x01) ?
- CMD_BANKADDR_BRRD : CMD_EXTNADDR_RDEAR;
- flash->bank_write_cmd = (idcode[0] == 0x01) ?
- CMD_BANKADDR_BRWR : CMD_EXTNADDR_WREAR;
-
- ret = spi_flash_read_common(flash, &flash->bank_read_cmd, 1,
- &curr_bank, 1);
- if (ret) {
- debug("SF: fail to read bank addr register\n");
- return ret;
- }
- flash->bank_curr = curr_bank;
- } else {
- flash->bank_curr = curr_bank;
- }
+ int ret = spi_flash_read_bank(flash, idcode[0]);
+ if (ret < 0)
+ return ret;
#endif
/* Flash powers up read-only, so clear BP# bits */
--
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 ` Jagan Teki [this message]
2015-10-25 7:35 ` [U-Boot] [PATCH v4 03/21] sf: Add spi_flash_read_bar Jagan Teki
2015-10-12 15:00 ` [U-Boot] [PATCH v4 04/21] sf: Optimize BAR write code Jagan Teki
2015-10-25 7:36 ` 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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