From: Mason Yang <masonccyang@mxic.com.tw>
To: broonie@kernel.org, tudor.ambarus@microchip.com,
miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com,
boris.brezillon@collabora.com, matthias.bgg@gmail.com
Cc: juliensu@mxic.com.tw, linux-kernel@vger.kernel.org,
linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org,
Mason Yang <masonccyang@mxic.com.tw>,
p.yadav@ti.com
Subject: [PATCH v4 5/7] mtd: spi-nor: core: execute command sequences to change octal DTR mode
Date: Fri, 29 May 2020 15:36:13 +0800 [thread overview]
Message-ID: <1590737775-4798-6-git-send-email-masonccyang@mxic.com.tw> (raw)
In-Reply-To: <1590737775-4798-1-git-send-email-masonccyang@mxic.com.tw>
Execute command sequences to change octal DTR mode.
Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
---
drivers/mtd/spi-nor/core.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++
drivers/mtd/spi-nor/core.h | 1 +
2 files changed, 72 insertions(+)
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index fed6236..c8cd0c6 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -347,6 +347,77 @@ int spi_nor_write_cr2(struct spi_nor *nor, u32 addr, u8 *cr2)
}
/**
+ * spi_nor_cmd_seq_octal_dtr() - command sequences to change to octal DTR mode
+ * @nor: pointer to 'struct spi_nor'.
+ * @enable: enable Octal DTR.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
+int spi_nor_cmd_seq_octal_dtr(struct spi_nor *nor, bool enable)
+{
+ struct spi_nor_flash_parameter *p = nor->params;
+ struct cmd_seq_octal_dtr *cs = p->cmd_seq;
+ int i, ret;
+ struct spi_mem_op op;
+
+ if (!nor->spimem || !p->cmd_seq[0].len)
+ return -ENOTSUPP;
+
+ if (!enable)
+ return 0;
+
+ for (i = 0; i < CMD_SEQ_NUM; i++) {
+ switch (p->cmd_seq[i].len) {
+ case 1:
+ op = (struct spi_mem_op)
+ SPI_MEM_OP(SPI_MEM_OP_CMD(cs[i].opcode, 1),
+ SPI_MEM_OP_NO_ADDR,
+ SPI_MEM_OP_NO_DUMMY,
+ SPI_MEM_OP_NO_DATA);
+
+ ret = spi_mem_exec_op(nor->spimem, &op);
+ if (ret)
+ return ret;
+ break;
+
+ case 3:
+ op = (struct spi_mem_op)
+ SPI_MEM_OP(SPI_MEM_OP_CMD(cs[i].opcode, 1),
+ SPI_MEM_OP_ADDR(1, cs[i].addr, 1),
+ SPI_MEM_OP_NO_DUMMY,
+ SPI_MEM_OP_DATA_OUT(1,
+ &cs[i].data, 1));
+
+ ret = spi_mem_exec_op(nor->spimem, &op);
+ if (ret)
+ return ret;
+ break;
+
+ case 6:
+ op = (struct spi_mem_op)
+ SPI_MEM_OP(SPI_MEM_OP_CMD(cs[i].opcode, 1),
+ SPI_MEM_OP_ADDR(4, cs[i].addr, 1),
+ SPI_MEM_OP_NO_DUMMY,
+ SPI_MEM_OP_DATA_OUT(1,
+ &cs[i].data, 1));
+
+ ret = spi_mem_exec_op(nor->spimem, &op);
+ if (ret)
+ return ret;
+ break;
+
+ default:
+ dev_err(nor->dev,
+ "Error %d sequences to Octal DTR\n",
+ p->cmd_seq[i].len);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+/**
* spi_nor_read_sr() - Read the Status Register.
* @nor: pointer to 'struct spi_nor'.
* @sr: pointer to a DMA-able buffer where the value of the
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 0eb07ca..e4cf20a 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -436,6 +436,7 @@ struct spi_nor_manufacturer {
int spi_nor_write_disable(struct spi_nor *nor);
int spi_nor_read_cr2(struct spi_nor *nor, u32 addr, u8 *cr2);
int spi_nor_write_cr2(struct spi_nor *nor, u32 addr, u8 *cr2);
+int spi_nor_cmd_seq_octal_dtr(struct spi_nor *nor, bool enable);
int spi_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable);
int spi_nor_write_ear(struct spi_nor *nor, u8 ear);
int spi_nor_wait_till_ready(struct spi_nor *nor);
--
1.9.1
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next prev parent reply other threads:[~2020-05-29 7:37 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 7:36 [PATCH v4 0/7] mtd: spi-nor: add xSPI Octal DTR support Mason Yang
2020-05-29 7:36 ` [PATCH v4 1/7] mtd: spi-nor: sfdp: get octal mode maximum speed from BFPT Mason Yang
2020-05-29 9:23 ` Pratyush Yadav
2020-06-02 6:32 ` masonccyang
2020-07-13 5:49 ` masonccyang
2020-10-27 16:57 ` Tudor.Ambarus
2020-05-29 7:36 ` [PATCH v4 2/7] mtd: spi-nor: sfdp: parse xSPI Profile 1.0 table Mason Yang
2020-05-29 9:27 ` Pratyush Yadav
2020-07-13 5:52 ` masonccyang
2020-10-27 17:19 ` Tudor.Ambarus
2020-05-29 7:36 ` [PATCH v4 3/7] mtd: spi-nor: sfdp: parse command sequences to change octal DTR mode Mason Yang
2020-07-13 5:55 ` masonccyang
2020-10-28 9:45 ` Tudor.Ambarus
2020-05-29 7:36 ` [PATCH v4 4/7] mtd: spi-nor: core: add configuration register 2 read & write support Mason Yang
2020-07-13 5:56 ` masonccyang
2020-10-28 10:18 ` Tudor.Ambarus
2020-05-29 7:36 ` Mason Yang [this message]
2020-07-13 5:57 ` [PATCH v4 5/7] mtd: spi-nor: core: execute command sequences to change octal DTR mode masonccyang
2020-05-29 7:36 ` [PATCH v4 6/7] spi: mxic: patch for octal DTR mode support Mason Yang
2020-07-13 5:58 ` masonccyang
2020-05-29 7:36 ` [PATCH v4 7/7] mtd: spi-nor: macronix: Add Octal 8D-8D-8D supports for Macronix mx25uw51245g Mason Yang
2020-05-29 9:42 ` Pratyush Yadav
2020-06-02 6:44 ` masonccyang
2020-06-03 5:53 ` Pratyush Yadav
2020-06-05 2:53 ` masonccyang
2020-06-05 7:47 ` Pratyush Yadav
2020-07-13 5:59 ` masonccyang
2020-10-28 10:25 ` Tudor.Ambarus
2020-05-29 9:13 ` [PATCH v4 0/7] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
2020-07-13 5:47 ` masonccyang
2020-10-28 10:42 ` Tudor.Ambarus
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