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-rw-r--r--drivers/spi/spi-coldfire-qspi.c3
-rw-r--r--drivers/spi/spi-dw-mmio.c7
-rw-r--r--drivers/spi/spi-dw-pci.c29
-rw-r--r--drivers/spi/spi-dw.c108
-rw-r--r--drivers/spi/spi-dw.h6
5 files changed, 53 insertions, 100 deletions
diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c
index 688956ff5095..23f6fffd75e1 100644
--- a/drivers/spi/spi-coldfire-qspi.c
+++ b/drivers/spi/spi-coldfire-qspi.c
@@ -420,19 +420,20 @@ static int mcfqspi_probe(struct platform_device *pdev)
master->auto_runtime_pm = true;
platform_set_drvdata(pdev, master);
+ pm_runtime_enable(&pdev->dev);
status = devm_spi_register_master(&pdev->dev, master);
if (status) {
dev_dbg(&pdev->dev, "spi_register_master failed\n");
goto fail2;
}
- pm_runtime_enable(&pdev->dev);
dev_info(&pdev->dev, "Coldfire QSPI bus driver\n");
return 0;
fail2:
+ pm_runtime_disable(&pdev->dev);
mcfqspi_cs_teardown(mcfqspi);
fail1:
clk_disable(mcfqspi->clk);
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 7edede6e024b..a6d7029a85ac 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -19,6 +19,7 @@
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_platform.h>
+#include <linux/property.h>
#include "spi-dw.h"
@@ -74,13 +75,11 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
dws->max_freq = clk_get_rate(dwsmmio->clk);
- of_property_read_u32(pdev->dev.of_node, "reg-io-width",
- &dws->reg_io_width);
+ device_property_read_u32(&pdev->dev, "reg-io-width", &dws->reg_io_width);
num_cs = 4;
- if (pdev->dev.of_node)
- of_property_read_u32(pdev->dev.of_node, "num-cs", &num_cs);
+ device_property_read_u32(&pdev->dev, "num-cs", &num_cs);
dws->num_cs = num_cs;
diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
index 6d331e0db331..332ccb0539a7 100644
--- a/drivers/spi/spi-dw-pci.c
+++ b/drivers/spi/spi-dw-pci.c
@@ -23,11 +23,6 @@
#define DRIVER_NAME "dw_spi_pci"
-struct dw_spi_pci {
- struct pci_dev *pdev;
- struct dw_spi dws;
-};
-
struct spi_pci_desc {
int (*setup)(struct dw_spi *);
u16 num_cs;
@@ -48,7 +43,6 @@ static struct spi_pci_desc spi_pci_mid_desc_2 = {
static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
- struct dw_spi_pci *dwpci;
struct dw_spi *dws;
struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data;
int pci_bar = 0;
@@ -58,14 +52,10 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
return ret;
- dwpci = devm_kzalloc(&pdev->dev, sizeof(struct dw_spi_pci),
- GFP_KERNEL);
- if (!dwpci)
+ dws = devm_kzalloc(&pdev->dev, sizeof(*dws), GFP_KERNEL);
+ if (!dws)
return -ENOMEM;
- dwpci->pdev = pdev;
- dws = &dwpci->dws;
-
/* Get basic io resource and map it */
dws->paddr = pci_resource_start(pdev, pci_bar);
@@ -74,7 +64,6 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return ret;
dws->regs = pcim_iomap_table(pdev)[pci_bar];
-
dws->irq = pdev->irq;
/*
@@ -99,7 +88,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return ret;
/* PCI hook and SPI hook use the same drv data */
- pci_set_drvdata(pdev, dwpci);
+ pci_set_drvdata(pdev, dws);
dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n",
pdev->vendor, pdev->device);
@@ -109,26 +98,26 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
static void spi_pci_remove(struct pci_dev *pdev)
{
- struct dw_spi_pci *dwpci = pci_get_drvdata(pdev);
+ struct dw_spi *dws = pci_get_drvdata(pdev);
- dw_spi_remove_host(&dwpci->dws);
+ dw_spi_remove_host(dws);
}
#ifdef CONFIG_PM_SLEEP
static int spi_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
- struct dw_spi_pci *dwpci = pci_get_drvdata(pdev);
+ struct dw_spi *dws = pci_get_drvdata(pdev);
- return dw_spi_suspend_host(&dwpci->dws);
+ return dw_spi_suspend_host(dws);
}
static int spi_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
- struct dw_spi_pci *dwpci = pci_get_drvdata(pdev);
+ struct dw_spi *dws = pci_get_drvdata(pdev);
- return dw_spi_resume_host(&dwpci->dws);
+ return dw_spi_resume_host(dws);
}
#endif
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 4fbfcdc5cb24..882cd6618cd5 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -30,19 +30,13 @@
/* Slave spi_dev related */
struct chip_data {
- u16 cr0;
u8 cs; /* chip select pin */
- u8 n_bytes; /* current is a 1/2/4 byte op */
u8 tmode; /* TR/TO/RO/EEPROM */
u8 type; /* SPI/SSP/MicroWire */
u8 poll_mode; /* 1 means use poll mode */
- u32 dma_width;
- u32 rx_threshold;
- u32 tx_threshold;
u8 enable_dma;
- u8 bits_per_word;
u16 clk_div; /* baud rate divider */
u32 speed_hz; /* baud rate */
void (*cs_control)(u32 command);
@@ -289,14 +283,11 @@ static int dw_spi_transfer_one(struct spi_master *master,
struct chip_data *chip = spi_get_ctldata(spi);
u8 imask = 0;
u16 txlevel = 0;
- u16 clk_div = 0;
- u32 speed = 0;
- u32 cr0 = 0;
+ u16 clk_div;
+ u32 cr0;
int ret;
dws->dma_mapped = 0;
- dws->n_bytes = chip->n_bytes;
- dws->dma_width = chip->dma_width;
dws->tx = (void *)transfer->tx_buf;
dws->tx_end = dws->tx + transfer->len;
@@ -306,37 +297,30 @@ static int dw_spi_transfer_one(struct spi_master *master,
spi_enable_chip(dws, 0);
- cr0 = chip->cr0;
-
/* Handle per transfer options for bpw and speed */
- if (transfer->speed_hz) {
- speed = chip->speed_hz;
-
- if ((transfer->speed_hz != speed) || !chip->clk_div) {
- speed = transfer->speed_hz;
-
- /* clk_div doesn't support odd number */
- clk_div = (dws->max_freq / speed + 1) & 0xfffe;
+ if (transfer->speed_hz != chip->speed_hz) {
+ /* clk_div doesn't support odd number */
+ clk_div = (dws->max_freq / transfer->speed_hz + 1) & 0xfffe;
- chip->speed_hz = speed;
- chip->clk_div = clk_div;
+ chip->speed_hz = transfer->speed_hz;
+ chip->clk_div = clk_div;
- spi_set_clk(dws, chip->clk_div);
- }
+ spi_set_clk(dws, chip->clk_div);
}
- if (transfer->bits_per_word) {
- if (transfer->bits_per_word == 8) {
- dws->n_bytes = 1;
- dws->dma_width = 1;
- } else if (transfer->bits_per_word == 16) {
- dws->n_bytes = 2;
- dws->dma_width = 2;
- }
- cr0 = (transfer->bits_per_word - 1)
- | (chip->type << SPI_FRF_OFFSET)
- | (spi->mode << SPI_MODE_OFFSET)
- | (chip->tmode << SPI_TMOD_OFFSET);
+ if (transfer->bits_per_word == 8) {
+ dws->n_bytes = 1;
+ dws->dma_width = 1;
+ } else if (transfer->bits_per_word == 16) {
+ dws->n_bytes = 2;
+ dws->dma_width = 2;
+ } else {
+ return -EINVAL;
}
+ /* Default SPI mode is SCPOL = 0, SCPH = 0 */
+ cr0 = (transfer->bits_per_word - 1)
+ | (chip->type << SPI_FRF_OFFSET)
+ | (spi->mode << SPI_MODE_OFFSET)
+ | (chip->tmode << SPI_TMOD_OFFSET);
/*
* Adjust transfer mode if necessary. Requires platform dependent
@@ -439,34 +423,9 @@ static int dw_spi_setup(struct spi_device *spi)
chip->poll_mode = chip_info->poll_mode;
chip->type = chip_info->type;
-
- chip->rx_threshold = 0;
- chip->tx_threshold = 0;
- }
-
- if (spi->bits_per_word == 8) {
- chip->n_bytes = 1;
- chip->dma_width = 1;
- } else if (spi->bits_per_word == 16) {
- chip->n_bytes = 2;
- chip->dma_width = 2;
- }
- chip->bits_per_word = spi->bits_per_word;
-
- if (!spi->max_speed_hz) {
- dev_err(&spi->dev, "No max speed HZ parameter\n");
- return -EINVAL;
}
chip->tmode = 0; /* Tx & Rx */
- /* Default SPI mode is SCPOL = 0, SCPH = 0 */
- chip->cr0 = (chip->bits_per_word - 1)
- | (chip->type << SPI_FRF_OFFSET)
- | (spi->mode << SPI_MODE_OFFSET)
- | (chip->tmode << SPI_TMOD_OFFSET);
-
- if (spi->mode & SPI_LOOP)
- chip->cr0 |= 1 << SPI_SRL_OFFSET;
if (gpio_is_valid(spi->cs_gpio)) {
ret = gpio_direction_output(spi->cs_gpio,
@@ -524,13 +483,12 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
dws->master = master;
dws->type = SSI_MOTO_SPI;
dws->dma_inited = 0;
- dws->dma_addr = (dma_addr_t)(dws->paddr + 0x60);
+ dws->dma_addr = (dma_addr_t)(dws->paddr + DW_SPI_DR);
snprintf(dws->name, sizeof(dws->name), "dw_spi%d", dws->bus_num);
- ret = devm_request_irq(dev, dws->irq, dw_spi_irq, IRQF_SHARED,
- dws->name, master);
+ ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, dws->name, master);
if (ret < 0) {
- dev_err(&master->dev, "can not get IRQ\n");
+ dev_err(dev, "can not get IRQ\n");
goto err_free_master;
}
@@ -573,6 +531,7 @@ err_dma_exit:
if (dws->dma_ops && dws->dma_ops->dma_exit)
dws->dma_ops->dma_exit(dws);
spi_enable_chip(dws, 0);
+ free_irq(dws->irq, master);
err_free_master:
spi_master_put(master);
return ret;
@@ -581,28 +540,27 @@ EXPORT_SYMBOL_GPL(dw_spi_add_host);
void dw_spi_remove_host(struct dw_spi *dws)
{
- if (!dws)
- return;
dw_spi_debugfs_remove(dws);
if (dws->dma_ops && dws->dma_ops->dma_exit)
dws->dma_ops->dma_exit(dws);
- spi_enable_chip(dws, 0);
- /* Disable clk */
- spi_set_clk(dws, 0);
+
+ spi_shutdown_chip(dws);
+
+ free_irq(dws->irq, dws->master);
}
EXPORT_SYMBOL_GPL(dw_spi_remove_host);
int dw_spi_suspend_host(struct dw_spi *dws)
{
- int ret = 0;
+ int ret;
ret = spi_master_suspend(dws->master);
if (ret)
return ret;
- spi_enable_chip(dws, 0);
- spi_set_clk(dws, 0);
- return ret;
+
+ spi_shutdown_chip(dws);
+ return 0;
}
EXPORT_SYMBOL_GPL(dw_spi_suspend_host);
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
index b75ed327d5a2..35589a270468 100644
--- a/drivers/spi/spi-dw.h
+++ b/drivers/spi/spi-dw.h
@@ -225,6 +225,12 @@ static inline void spi_reset_chip(struct dw_spi *dws)
spi_enable_chip(dws, 1);
}
+static inline void spi_shutdown_chip(struct dw_spi *dws)
+{
+ spi_enable_chip(dws, 0);
+ spi_set_clk(dws, 0);
+}
+
/*
* Each SPI slave device to work with dw_api controller should
* has such a structure claiming its working mode (poll or PIO/DMA),
generated by cgit v1.2.3 (git 2.0.4) at 2025-01-07 20:13:41 +0000