From: Apurva Nandan <a-nandan@ti.com> To: Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Mark Brown <broonie@kernel.org>, Apurva Nandan <a-nandan@ti.com>, Patrice Chotard <patrice.chotard@foss.st.com>, Christophe Kerello <christophe.kerello@foss.st.com>, Boris Brezillon <boris.brezillon@collabora.com>, Daniel Palmer <daniel@0x0f.com>, Alexander Lobakin <alobakin@pm.me>, <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org> Cc: <p.yadav@ti.com> Subject: [PATCH v3 09/17] mtd: spinand: Add change_mode() in manufacturer_ops Date: Sat, 1 Jan 2022 13:12:42 +0530 [thread overview] Message-ID: <20220101074250.14443-10-a-nandan@ti.com> (raw) In-Reply-To: <20220101074250.14443-1-a-nandan@ti.com> Introduce change_mode() manufacturer_op to let the vendor provide the implementation of switching of SPI IO modes. The method to switch to different SPI IO mode may vary across manufacturers. For example, for Winbond, Octal DTR is enabled by writing values to the volatile configuration register. So, let the manufacturer's code have their own implementation for switching to any given SPI IO mode. Manufacturer's code need to take care, if the requested protocol change is allowed/needed and how to apply it. Signed-off-by: Apurva Nandan <a-nandan@ti.com> --- include/linux/mtd/spinand.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 5dae0649f2fb..ad924271a248 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -298,6 +298,7 @@ struct spinand_devid { /** * struct manufacurer_ops - SPI NAND manufacturer specific operations * @init: initialize a SPI NAND device + * @change_mode: switch the SPI NAND flash to a specific SPI protocol * @cleanup: cleanup a SPI NAND device * * Each SPI NAND manufacturer driver should implement this interface so that @@ -305,6 +306,8 @@ struct spinand_devid { */ struct spinand_manufacturer_ops { int (*init)(struct spinand_device *spinand); + int (*change_mode)(struct spinand_device *spinand, + const enum spinand_protocol protocol); void (*cleanup)(struct spinand_device *spinand); }; -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Apurva Nandan <a-nandan@ti.com> To: Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>, Mark Brown <broonie@kernel.org>, Apurva Nandan <a-nandan@ti.com>, Patrice Chotard <patrice.chotard@foss.st.com>, Christophe Kerello <christophe.kerello@foss.st.com>, Boris Brezillon <boris.brezillon@collabora.com>, Daniel Palmer <daniel@0x0f.com>, Alexander Lobakin <alobakin@pm.me>, <linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org> Cc: <p.yadav@ti.com> Subject: [PATCH v3 09/17] mtd: spinand: Add change_mode() in manufacturer_ops Date: Sat, 1 Jan 2022 13:12:42 +0530 [thread overview] Message-ID: <20220101074250.14443-10-a-nandan@ti.com> (raw) In-Reply-To: <20220101074250.14443-1-a-nandan@ti.com> Introduce change_mode() manufacturer_op to let the vendor provide the implementation of switching of SPI IO modes. The method to switch to different SPI IO mode may vary across manufacturers. For example, for Winbond, Octal DTR is enabled by writing values to the volatile configuration register. So, let the manufacturer's code have their own implementation for switching to any given SPI IO mode. Manufacturer's code need to take care, if the requested protocol change is allowed/needed and how to apply it. Signed-off-by: Apurva Nandan <a-nandan@ti.com> --- include/linux/mtd/spinand.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 5dae0649f2fb..ad924271a248 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -298,6 +298,7 @@ struct spinand_devid { /** * struct manufacurer_ops - SPI NAND manufacturer specific operations * @init: initialize a SPI NAND device + * @change_mode: switch the SPI NAND flash to a specific SPI protocol * @cleanup: cleanup a SPI NAND device * * Each SPI NAND manufacturer driver should implement this interface so that @@ -305,6 +306,8 @@ struct spinand_devid { */ struct spinand_manufacturer_ops { int (*init)(struct spinand_device *spinand); + int (*change_mode)(struct spinand_device *spinand, + const enum spinand_protocol protocol); void (*cleanup)(struct spinand_device *spinand); }; -- 2.25.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2022-01-01 7:44 UTC|newest] Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-01-01 7:42 [PATCH v3 00/17] mtd: spinand: Add Octal DTR SPI (8D-8D-8D) mode support Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 01/17] spi: spi-mem: Add DTR templates for cmd, address, dummy and data phase Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-04 14:52 ` Mark Brown 2022-01-04 14:52 ` Mark Brown 2022-01-04 15:31 ` Boris Brezillon 2022-01-04 15:31 ` Boris Brezillon 2022-01-05 5:50 ` Pratyush Yadav 2022-01-05 5:50 ` Pratyush Yadav 2022-01-05 7:36 ` Boris Brezillon 2022-01-05 7:36 ` Boris Brezillon 2022-01-05 8:24 ` Tudor.Ambarus 2022-01-05 8:24 ` Tudor.Ambarus 2022-01-01 7:42 ` [PATCH v3 02/17] mtd: spinand: Define macros for Octal DTR ops Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 03/17] mtd: spinand: Add enum spinand_protocol to indicate current SPI IO mode Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-03 10:05 ` Boris Brezillon 2022-01-03 10:05 ` Boris Brezillon 2022-01-01 7:42 ` [PATCH v3 04/17] mtd: spinand: Rename 'op_templates' to 'data_ops' Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-03 9:48 ` Boris Brezillon 2022-01-03 9:48 ` Boris Brezillon 2022-01-01 7:42 ` [PATCH v3 05/17] mtd: spinand: Define ctrl_ops for non-page read/write op templates Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-03 10:01 ` Boris Brezillon 2022-01-03 10:01 ` Boris Brezillon 2022-01-03 10:36 ` Boris Brezillon 2022-01-03 10:36 ` Boris Brezillon 2022-02-15 15:33 ` Apurva Nandan 2022-02-15 15:33 ` Apurva Nandan 2022-02-15 17:37 ` Boris Brezillon 2022-02-15 17:37 ` Boris Brezillon 2022-03-02 15:30 ` Apurva Nandan 2022-03-02 15:30 ` Apurva Nandan 2022-03-02 20:05 ` Boris Brezillon 2022-03-02 20:05 ` Boris Brezillon 2022-03-10 7:57 ` Apurva Nandan 2022-03-10 7:57 ` Apurva Nandan 2022-03-10 8:40 ` Boris Brezillon 2022-03-10 8:40 ` Boris Brezillon 2022-03-14 11:47 ` Apurva Nandan 2022-03-14 11:47 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 06/17] mtd: spinand: Define default ctrl_ops in the core Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 07/17] mtd: spinand: Switch from op macros usage to 'ctrl_ops' " Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 08/17] mtd: spinand: Add support for manufacturer-based ctrl_ops variations Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan [this message] 2022-01-01 7:42 ` [PATCH v3 09/17] mtd: spinand: Add change_mode() in manufacturer_ops Apurva Nandan 2022-01-05 9:52 ` Boris Brezillon 2022-01-05 9:52 ` Boris Brezillon 2022-01-01 7:42 ` [PATCH v3 10/17] mtd: spinand: Add pointer to probed flash's spinand_info Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 11/17] mtd: spinand: Allow enabling/disabling Octal DTR mode in the core Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-03 10:14 ` Boris Brezillon 2022-01-03 10:14 ` Boris Brezillon 2022-01-01 7:42 ` [PATCH v3 12/17] mtd: spinand: Add mtd_suspend() to disable Octal DTR mode at suspend Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-03 10:17 ` Boris Brezillon 2022-01-03 10:17 ` Boris Brezillon 2022-01-01 7:42 ` [PATCH v3 13/17] mtd: spinand: winbond: Add support for write volatile configuration register op Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 14/17] mtd: spinand: winbond: Add octal_dtr_enable/disable() in manufacturer_ops Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 15/17] mtd: spianand: winbond: Add change_mode() manufacturer_ops Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-03 10:27 ` Boris Brezillon 2022-01-03 10:27 ` Boris Brezillon 2022-01-01 7:42 ` [PATCH v3 16/17] mtd: spinand: winbond: Rename cache op_variants struct variable Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan 2022-01-01 7:42 ` [PATCH v3 17/17] mtd: spinand: winbond: Add support for Winbond W35N01JW SPI NAND flash Apurva Nandan 2022-01-01 7:42 ` Apurva Nandan
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