target/linux/mediatek/patches-5.4/9016-drivers-spi-mt65xx-Add-controller-calibration-parameter.patch

From ac9ed3898b80a81ce220a682749767ef189094a8 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] drivers: spi-mt65xx: Add controller's calibration paramter

Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
---
 drivers/spi/spi-mt65xx.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 0afd00891..1b272d15c 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -727,6 +727,21 @@ static irqreturn_t mtk_spi_interrupt(int irq, void *dev_id)
 	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->dev_config.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)
 {
@@ -1009,6 +1024,8 @@ static int mtk_spi_probe(struct platform_device *pdev)
 	master->can_dma = mtk_spi_can_dma;
 	master->setup = mtk_spi_setup;
 
+	master->append_caldata = mtk_spi_append_caldata;
+
 	of_id = of_match_node(mtk_spi_of_match, pdev->dev.of_node);
 	if (!of_id) {
 		dev_err(&pdev->dev, "failed to probe of_node\n");
-- 
2.18.0