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path: root/target/linux/bcm53xx/patches-3.18/403-mtd-spi-nor-refactor-wait-till-ready.patch
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Diffstat (limited to 'target/linux/bcm53xx/patches-3.18/403-mtd-spi-nor-refactor-wait-till-ready.patch')
-rw-r--r--target/linux/bcm53xx/patches-3.18/403-mtd-spi-nor-refactor-wait-till-ready.patch374
1 files changed, 0 insertions, 374 deletions
diff --git a/target/linux/bcm53xx/patches-3.18/403-mtd-spi-nor-refactor-wait-till-ready.patch b/target/linux/bcm53xx/patches-3.18/403-mtd-spi-nor-refactor-wait-till-ready.patch
deleted file mode 100644
index 08e53a7..0000000
--- a/target/linux/bcm53xx/patches-3.18/403-mtd-spi-nor-refactor-wait-till-ready.patch
+++ /dev/null
@@ -1,374 +0,0 @@
---- a/drivers/mtd/spi-nor/fsl-quadspi.c
-+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
-@@ -719,16 +719,10 @@ static int fsl_qspi_read(struct spi_nor
- {
- struct fsl_qspi *q = nor->priv;
- u8 cmd = nor->read_opcode;
-- int ret;
-
- dev_dbg(q->dev, "cmd [%x],read from (0x%p, 0x%.8x, 0x%.8x),len:%d\n",
- cmd, q->ahb_base, q->chip_base_addr, (unsigned int)from, len);
-
-- /* Wait until the previous command is finished. */
-- ret = nor->wait_till_ready(nor);
-- if (ret)
-- return ret;
--
- /* Read out the data directly from the AHB buffer.*/
- memcpy(buf, q->ahb_base + q->chip_base_addr + from, len);
-
-@@ -744,16 +738,6 @@ static int fsl_qspi_erase(struct spi_nor
- dev_dbg(nor->dev, "%dKiB at 0x%08x:0x%08x\n",
- nor->mtd->erasesize / 1024, q->chip_base_addr, (u32)offs);
-
-- /* Wait until finished previous write command. */
-- ret = nor->wait_till_ready(nor);
-- if (ret)
-- return ret;
--
-- /* Send write enable, then erase commands. */
-- ret = nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0);
-- if (ret)
-- return ret;
--
- ret = fsl_qspi_runcmd(q, nor->erase_opcode, offs, 0);
- if (ret)
- return ret;
---- a/drivers/mtd/spi-nor/spi-nor.c
-+++ b/drivers/mtd/spi-nor/spi-nor.c
-@@ -165,81 +165,69 @@ static inline int set_4byte(struct spi_n
- return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1, 0);
- }
- }
--
--static int spi_nor_wait_till_ready(struct spi_nor *nor)
-+static inline int spi_nor_sr_ready(struct spi_nor *nor)
- {
-- unsigned long deadline;
-- int sr;
--
-- deadline = jiffies + MAX_READY_WAIT_JIFFIES;
--
-- do {
-- cond_resched();
-+ int sr = read_sr(nor);
-+ if (sr < 0)
-+ return sr;
-+ else
-+ return !(sr & SR_WIP);
-+}
-
-- sr = read_sr(nor);
-- if (sr < 0)
-- break;
-- else if (!(sr & SR_WIP))
-- return 0;
-- } while (!time_after_eq(jiffies, deadline));
-+static inline int spi_nor_fsr_ready(struct spi_nor *nor)
-+{
-+ int fsr = read_fsr(nor);
-+ if (fsr < 0)
-+ return fsr;
-+ else
-+ return fsr & FSR_READY;
-+}
-
-- return -ETIMEDOUT;
-+static int spi_nor_ready(struct spi_nor *nor)
-+{
-+ int sr, fsr;
-+ sr = spi_nor_sr_ready(nor);
-+ if (sr < 0)
-+ return sr;
-+ fsr = nor->flags & SNOR_F_USE_FSR ? spi_nor_fsr_ready(nor) : 1;
-+ if (fsr < 0)
-+ return sr;
-+ return sr && fsr;
- }
-
--static int spi_nor_wait_till_fsr_ready(struct spi_nor *nor)
-+/*
-+ * Service routine to read status register until ready, or timeout occurs.
-+ * Returns non-zero if error.
-+ */
-+static int spi_nor_wait_till_ready(struct spi_nor *nor)
- {
- unsigned long deadline;
-- int sr;
-- int fsr;
-+ int ret;
-
- deadline = jiffies + MAX_READY_WAIT_JIFFIES;
-
- do {
- cond_resched();
-
-- sr = read_sr(nor);
-- if (sr < 0) {
-- break;
-- } else if (!(sr & SR_WIP)) {
-- fsr = read_fsr(nor);
-- if (fsr < 0)
-- break;
-- if (fsr & FSR_READY)
-- return 0;
-- }
-+ ret = spi_nor_ready(nor);
-+ if (ret < 0)
-+ return ret;
-+ if (ret)
-+ return 0;
- } while (!time_after_eq(jiffies, deadline));
-
- return -ETIMEDOUT;
- }
-
- /*
-- * Service routine to read status register until ready, or timeout occurs.
-- * Returns non-zero if error.
-- */
--static int wait_till_ready(struct spi_nor *nor)
--{
-- return nor->wait_till_ready(nor);
--}
--
--/*
- * Erase the whole flash memory
- *
- * Returns 0 if successful, non-zero otherwise.
- */
- static int erase_chip(struct spi_nor *nor)
- {
-- int ret;
--
- dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd->size >> 10));
-
-- /* Wait until finished previous write command. */
-- ret = wait_till_ready(nor);
-- if (ret)
-- return ret;
--
-- /* Send write enable, then erase commands. */
-- write_enable(nor);
--
- return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0);
- }
-
-@@ -292,6 +280,8 @@ static int spi_nor_erase(struct mtd_info
- if (ret)
- return ret;
-
-+ write_enable(nor);
-+
- /* whole-chip erase? */
- if (len == mtd->size) {
- if (erase_chip(nor)) {
-@@ -299,6 +289,10 @@ static int spi_nor_erase(struct mtd_info
- goto erase_err;
- }
-
-+ ret = spi_nor_wait_till_ready(nor);
-+ if (ret)
-+ goto erase_err;
-+
- /* REVISIT in some cases we could speed up erasing large regions
- * by using SPINOR_OP_SE instead of SPINOR_OP_BE_4K. We may have set up
- * to use "small sector erase", but that's not always optimal.
-@@ -314,9 +308,15 @@ static int spi_nor_erase(struct mtd_info
-
- addr += mtd->erasesize;
- len -= mtd->erasesize;
-+
-+ ret = spi_nor_wait_till_ready(nor);
-+ if (ret)
-+ goto erase_err;
- }
- }
-
-+ write_disable(nor);
-+
- spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_ERASE);
-
- instr->state = MTD_ERASE_DONE;
-@@ -341,11 +341,6 @@ static int spi_nor_lock(struct mtd_info
- if (ret)
- return ret;
-
-- /* Wait until finished previous command */
-- ret = wait_till_ready(nor);
-- if (ret)
-- goto err;
--
- status_old = read_sr(nor);
-
- if (offset < mtd->size - (mtd->size / 2))
-@@ -388,11 +383,6 @@ static int spi_nor_unlock(struct mtd_inf
- if (ret)
- return ret;
-
-- /* Wait until finished previous command */
-- ret = wait_till_ready(nor);
-- if (ret)
-- goto err;
--
- status_old = read_sr(nor);
-
- if (offset+len > mtd->size - (mtd->size / 64))
-@@ -704,11 +694,6 @@ static int sst_write(struct mtd_info *mt
- if (ret)
- return ret;
-
-- /* Wait until finished previous write command. */
-- ret = wait_till_ready(nor);
-- if (ret)
-- goto time_out;
--
- write_enable(nor);
-
- nor->sst_write_second = false;
-@@ -720,7 +705,7 @@ static int sst_write(struct mtd_info *mt
-
- /* write one byte. */
- nor->write(nor, to, 1, retlen, buf);
-- ret = wait_till_ready(nor);
-+ ret = spi_nor_wait_till_ready(nor);
- if (ret)
- goto time_out;
- }
-@@ -732,7 +717,7 @@ static int sst_write(struct mtd_info *mt
-
- /* write two bytes. */
- nor->write(nor, to, 2, retlen, buf + actual);
-- ret = wait_till_ready(nor);
-+ ret = spi_nor_wait_till_ready(nor);
- if (ret)
- goto time_out;
- to += 2;
-@@ -741,7 +726,7 @@ static int sst_write(struct mtd_info *mt
- nor->sst_write_second = false;
-
- write_disable(nor);
-- ret = wait_till_ready(nor);
-+ ret = spi_nor_wait_till_ready(nor);
- if (ret)
- goto time_out;
-
-@@ -752,7 +737,7 @@ static int sst_write(struct mtd_info *mt
- nor->program_opcode = SPINOR_OP_BP;
- nor->write(nor, to, 1, retlen, buf + actual);
-
-- ret = wait_till_ready(nor);
-+ ret = spi_nor_wait_till_ready(nor);
- if (ret)
- goto time_out;
- write_disable(nor);
-@@ -780,11 +765,6 @@ static int spi_nor_write(struct mtd_info
- if (ret)
- return ret;
-
-- /* Wait until finished previous write command. */
-- ret = wait_till_ready(nor);
-- if (ret)
-- goto write_err;
--
- write_enable(nor);
-
- page_offset = to & (nor->page_size - 1);
-@@ -803,16 +783,20 @@ static int spi_nor_write(struct mtd_info
- if (page_size > nor->page_size)
- page_size = nor->page_size;
-
-- wait_till_ready(nor);
-+ ret = spi_nor_wait_till_ready(nor);
-+ if (ret)
-+ goto write_err;
-+
- write_enable(nor);
-
- nor->write(nor, to + i, page_size, retlen, buf + i);
- }
- }
-
-+ ret = spi_nor_wait_till_ready(nor);
- write_err:
- spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
-- return 0;
-+ return ret;
- }
-
- static int macronix_quad_enable(struct spi_nor *nor)
-@@ -825,7 +809,7 @@ static int macronix_quad_enable(struct s
- nor->cmd_buf[0] = val | SR_QUAD_EN_MX;
- nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1, 0);
-
-- if (wait_till_ready(nor))
-+ if (spi_nor_wait_till_ready(nor))
- return 1;
-
- ret = read_sr(nor);
-@@ -907,8 +891,6 @@ static int spi_nor_check(struct spi_nor
-
- if (!nor->read_id)
- nor->read_id = spi_nor_read_id;
-- if (!nor->wait_till_ready)
-- nor->wait_till_ready = spi_nor_wait_till_ready;
-
- return 0;
- }
-@@ -983,9 +965,8 @@ int spi_nor_scan(struct spi_nor *nor, co
- else
- mtd->_write = spi_nor_write;
-
-- if ((info->flags & USE_FSR) &&
-- nor->wait_till_ready == spi_nor_wait_till_ready)
-- nor->wait_till_ready = spi_nor_wait_till_fsr_ready;
-+ if (info->flags & USE_FSR)
-+ nor->flags |= SNOR_F_USE_FSR;
-
- #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
- /* prefer "small sector" erase if possible */
---- a/include/linux/mtd/spi-nor.h
-+++ b/include/linux/mtd/spi-nor.h
-@@ -116,6 +116,10 @@ enum spi_nor_ops {
- SPI_NOR_OPS_UNLOCK,
- };
-
-+enum spi_nor_option_flags {
-+ SNOR_F_USE_FSR = BIT(0),
-+};
-+
- /**
- * struct spi_nor - Structure for defining a the SPI NOR layer
- * @mtd: point to a mtd_info structure
-@@ -129,6 +133,7 @@ enum spi_nor_ops {
- * @program_opcode: the program opcode
- * @flash_read: the mode of the read
- * @sst_write_second: used by the SST write operation
-+ * @flags: flag options for the current SPI-NOR (SNOR_F_*)
- * @cfg: used by the read_xfer/write_xfer
- * @cmd_buf: used by the write_reg
- * @prepare: [OPTIONAL] do some preparations for the
-@@ -141,7 +146,6 @@ enum spi_nor_ops {
- * @write_reg: [DRIVER-SPECIFIC] write data to the register
- * @read_id: [REPLACEABLE] read out the ID data, and find
- * the proper spi_device_id
-- * @wait_till_ready: [REPLACEABLE] wait till the NOR becomes ready
- * @read: [DRIVER-SPECIFIC] read data from the SPI NOR
- * @write: [DRIVER-SPECIFIC] write data to the SPI NOR
- * @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR
-@@ -160,6 +164,7 @@ struct spi_nor {
- u8 program_opcode;
- enum read_mode flash_read;
- bool sst_write_second;
-+ u32 flags;
- struct spi_nor_xfer_cfg cfg;
- u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE];
-
-@@ -173,7 +178,6 @@ struct spi_nor {
- int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len,
- int write_enable);
- const struct spi_device_id *(*read_id)(struct spi_nor *nor);
-- int (*wait_till_ready)(struct spi_nor *nor);
-
- int (*read)(struct spi_nor *nor, loff_t from,
- size_t len, size_t *retlen, u_char *read_buf);
generated by cgit v1.1 at 2024-11-09 18:33:24 +0000