From 072de836f53be56a70cecf70b43ae43b7ce17376 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 10:08:36 +0000
Subject: [PATCH] mk-rootfs.sh
---
kernel/drivers/spi/spi-pxa2xx-pci.c | 27 +++++++++++++++++++++++----
1 files changed, 23 insertions(+), 4 deletions(-)
diff --git a/kernel/drivers/spi/spi-pxa2xx-pci.c b/kernel/drivers/spi/spi-pxa2xx-pci.c
index 1736a48..4eb979a 100644
--- a/kernel/drivers/spi/spi-pxa2xx-pci.c
+++ b/kernel/drivers/spi/spi-pxa2xx-pci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* CE4100's SPI device is more or less the same one as found on PXA
*
@@ -5,7 +6,6 @@
*/
#include <linux/clk-provider.h>
#include <linux/module.h>
-#include <linux/of_device.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/spi/pxa2xx_spi.h>
@@ -35,6 +35,8 @@
bool (*dma_filter)(struct dma_chan *chan, void *param);
void *tx_param;
void *rx_param;
+
+ int dma_burst_size;
int (*setup)(struct pci_dev *pdev, struct pxa_spi_info *c);
};
@@ -72,14 +74,23 @@
return true;
}
+static void lpss_dma_put_device(void *dma_dev)
+{
+ pci_dev_put(dma_dev);
+}
+
static int lpss_spi_setup(struct pci_dev *dev, struct pxa_spi_info *c)
{
struct pci_dev *dma_dev;
+ int ret;
c->num_chipselect = 1;
c->max_clk_rate = 50000000;
dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
+ ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
+ if (ret)
+ return ret;
if (c->tx_param) {
struct dw_dma_slave *slave = c->tx_param;
@@ -103,8 +114,9 @@
static int mrfld_spi_setup(struct pci_dev *dev, struct pxa_spi_info *c)
{
- struct pci_dev *dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
struct dw_dma_slave *tx, *rx;
+ struct pci_dev *dma_dev;
+ int ret;
switch (PCI_FUNC(dev->devfn)) {
case 0:
@@ -129,6 +141,11 @@
return -ENODEV;
}
+ dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
+ ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
+ if (ret)
+ return ret;
+
tx = c->tx_param;
tx->dma_dev = &dma_dev->dev;
@@ -136,6 +153,7 @@
rx->dma_dev = &dma_dev->dev;
c->dma_filter = lpss_dma_filter;
+ c->dma_burst_size = 8;
return 0;
}
@@ -207,7 +225,7 @@
struct platform_device_info pi;
int ret;
struct platform_device *pdev;
- struct pxa2xx_spi_master spi_pdata;
+ struct pxa2xx_spi_controller spi_pdata;
struct ssp_device *ssp;
struct pxa_spi_info *c;
char buf[40];
@@ -233,6 +251,7 @@
spi_pdata.tx_param = c->tx_param;
spi_pdata.rx_param = c->rx_param;
spi_pdata.enable_dma = c->rx_param && c->tx_param;
+ spi_pdata.dma_burst_size = c->dma_burst_size ? c->dma_burst_size : 1;
ssp = &spi_pdata.ssp;
ssp->phys_base = pci_resource_start(dev, 0);
@@ -275,7 +294,7 @@
static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
{
struct platform_device *pdev = pci_get_drvdata(dev);
- struct pxa2xx_spi_master *spi_pdata;
+ struct pxa2xx_spi_controller *spi_pdata;
spi_pdata = dev_get_platdata(&pdev->dev);
--
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