[][drivers: spi-mem: Add spi calibration hook]
[Description]
Add spi calibration hook.
[Release-log]
N/A
Change-Id: Ia904e6d5e6b5c03298a4321eda88a84ef3c7cf1b
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6151754
diff --git a/target/linux/mediatek/patches-5.4/9015-drivers-spi-mem-Add-spi-calibration-hook.patch b/target/linux/mediatek/patches-5.4/9015-drivers-spi-mem-Add-spi-calibration-hook.patch
new file mode 100644
index 0000000..dcea7de
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/9015-drivers-spi-mem-Add-spi-calibration-hook.patch
@@ -0,0 +1,48 @@
+From a4f235c3a3c4d25aa6a4417ce64831ca0b38c324 Mon Sep 17 00:00:00 2001
+From: "SkyLake.Huang" <skylake.huang@mediatek.com>
+Date: Thu, 23 Jun 2022 18:37:55 +0800
+Subject: [PATCH] drivers: spi-mem: Add spi calibration hook
+
+Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
+---
+ drivers/spi/spi-mem.c | 8 ++++++++
+ include/linux/spi/spi-mem.h | 4 ++++
+ 2 files changed, 12 insertions(+)
+
+diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
+index 33115bcfc..b5ab26e9c 100644
+--- a/drivers/spi/spi-mem.c
++++ b/drivers/spi/spi-mem.c
+@@ -383,6 +383,14 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
+ }
+ EXPORT_SYMBOL_GPL(spi_mem_exec_op);
+
++int spi_mem_do_calibration(struct spi_mem *mem,
++ int (*cal_read)(void *priv, u32 *addr, int addrlen, u8 *buf, int readlen),
++ void *priv)
++{
++ return spi_do_calibration(mem->spi->controller, mem->spi, cal_read, priv);
++}
++EXPORT_SYMBOL_GPL(spi_mem_do_calibration);
++
+ /**
+ * spi_mem_get_name() - Return the SPI mem device name to be used by the
+ * upper layer if necessary
+diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
+index af9ff2f0f..e2cde8305 100644
+--- a/include/linux/spi/spi-mem.h
++++ b/include/linux/spi/spi-mem.h
+@@ -332,6 +332,10 @@ bool spi_mem_supports_op(struct spi_mem *mem,
+ int spi_mem_exec_op(struct spi_mem *mem,
+ const struct spi_mem_op *op);
+
++int spi_mem_do_calibration(struct spi_mem *mem,
++ int (*cal_read)(void *, u32 *, int, u8 *, int),
++ void *priv);
++
+ const char *spi_mem_get_name(struct spi_mem *mem);
+
+ struct spi_mem_dirmap_desc *
+--
+2.18.0
+