openwrt/target/linux/mediatek/patches-5.15/434-drivers-spi-mt65xx-Add-controller-s-calibration-para.patch

From d278c7a0bf730318a7ccf8d0a8b434c813e23fd0 Mon Sep 17 00:00:00 2001
From: "SkyLake.Huang" <skylake.huang@mediatek.com>
Date: Thu, 23 Jun 2022 18:39:03 +0800
Subject: [PATCH 4/6] drivers: spi-mt65xx: Add controller's calibration
 paramter

Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
---
 drivers/spi/spi-mt65xx.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -802,6 +802,21 @@ static irqreturn_t mtk_spi_interrupt(int
 	return IRQ_HANDLED;
 }
 
+static int mtk_spi_append_caldata(struct spi_controller *ctlr)
+{
+	struct spi_cal_target *cal_target = kmalloc(sizeof(*cal_target), GFP_KERNEL);
+	struct mtk_spi *mdata = spi_master_get_devdata(ctlr);
+
+	cal_target->cal_item = &mdata->get_tick_dly;
+	cal_target->cal_min = 0;
+	cal_target->cal_max = 7;
+	cal_target->step = 1;
+
+	list_add(&cal_target->list, ctlr->cal_target);
+
+	return 0;
+}
+
 static int mtk_spi_mem_adjust_op_size(struct spi_mem *mem,
 				      struct spi_mem_op *op)
 {
@@ -1094,6 +1109,7 @@ static int mtk_spi_probe(struct platform
 	master->setup = mtk_spi_setup;
 	master->set_cs_timing = mtk_spi_set_hw_cs_timing;
 	master->use_gpio_descriptors = true;
+	master->append_caldata = mtk_spi_append_caldata;
 
 	of_id = of_match_node(mtk_spi_of_match, pdev->dev.of_node);
 	if (!of_id) {