[PATCH] spi: spi-cadence-quadspi: Populate get_name() interface

From: Vignesh Raghavendra <vigneshr@ti.com>
To: Mark Brown <broonie@kernel.org>
Cc: Tudor Ambarus <tudor.ambarus@microchip.com>,
	Ramuthevar Vadivel Murugan 
	<vadivel.muruganx.ramuthevar@linux.intel.com>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Jan Kiszka <jan.kiszka@siemens.com>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	Pratyush Yadav <p.yadav@ti.com>, <linux-spi@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH] spi: spi-cadence-quadspi: Populate get_name() interface
Date: Tue, 25 Aug 2020 22:55:06 +0530	[thread overview]
Message-ID: <20200825172506.14375-1-vigneshr@ti.com> (raw)

Implement get_name() interface of spi_controller_mem_ops so as to avoid
changing of mtd->name due to driver being moved over to spi-mem
framework from SPI NOR. This avoids breaking of MTD cmdline args being
passed by bootloaders which maybe using old driver name.

Fixes: 31fb632b5d43c ("spi: Move cadence-quadspi driver to drivers/spi/")
Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
 drivers/spi/spi-cadence-quadspi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 1c1a9d17eec0d..508b219eabf80 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1128,8 +1128,17 @@ static int cqspi_request_mmap_dma(struct cqspi_st *cqspi)
 	return 0;
 }
 
+static const char *cqspi_get_name(struct spi_mem *mem)
+{
+	struct cqspi_st *cqspi = spi_master_get_devdata(mem->spi->master);
+	struct device *dev = &cqspi->pdev->dev;
+
+	return devm_kasprintf(dev, GFP_KERNEL, "%s.%d", dev_name(dev), mem->spi->chip_select);
+}
+
 static const struct spi_controller_mem_ops cqspi_mem_ops = {
 	.exec_op = cqspi_exec_mem_op,
+	.get_name = cqspi_get_name,
 };
 
 static int cqspi_setup_flash(struct cqspi_st *cqspi)
-- 
2.28.0

