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path: root/drivers/spi/spi-s3c64xx.c
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Diffstat (limited to 'drivers/spi/spi-s3c64xx.c')
-rw-r--r--drivers/spi/spi-s3c64xx.c301
1 files changed, 225 insertions, 76 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 0e48ffd499b9..9fcbe040cb2f 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -3,19 +3,22 @@
// Copyright (c) 2009 Samsung Electronics Co., Ltd.
// Jaswinder Singh <jassi.brar@samsung.com>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/bits.h>
#include <linux/clk.h>
+#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_data/spi-s3c64xx.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/spi/spi.h>
-#include <linux/of.h>
-
-#include <linux/platform_data/spi-s3c64xx.h>
+#include <linux/types.h>
#define MAX_SPI_PORTS 12
#define S3C64XX_SPI_QUIRK_CS_AUTO (1 << 1)
@@ -76,6 +79,9 @@
#define S3C64XX_SPI_INT_RX_FIFORDY_EN (1<<1)
#define S3C64XX_SPI_INT_TX_FIFORDY_EN (1<<0)
+#define S3C64XX_SPI_ST_RX_FIFO_RDY_V2 GENMASK(23, 15)
+#define S3C64XX_SPI_ST_TX_FIFO_RDY_V2 GENMASK(14, 6)
+#define S3C64XX_SPI_ST_TX_FIFO_LVL_SHIFT 6
#define S3C64XX_SPI_ST_RX_OVERRUN_ERR (1<<5)
#define S3C64XX_SPI_ST_RX_UNDERRUN_ERR (1<<4)
#define S3C64XX_SPI_ST_TX_OVERRUN_ERR (1<<3)
@@ -106,15 +112,15 @@
#define FIFO_LVL_MASK(i) ((i)->port_conf->fifo_lvl_mask[i->port_id])
#define S3C64XX_SPI_ST_TX_DONE(v, i) (((v) & \
(1 << (i)->port_conf->tx_st_done)) ? 1 : 0)
-#define TX_FIFO_LVL(v, i) (((v) >> 6) & FIFO_LVL_MASK(i))
-#define RX_FIFO_LVL(v, i) (((v) >> (i)->port_conf->rx_lvl_offset) & \
- FIFO_LVL_MASK(i))
+#define TX_FIFO_LVL(v, sdd) (((v) & (sdd)->tx_fifomask) >> \
+ __ffs((sdd)->tx_fifomask))
+#define RX_FIFO_LVL(v, sdd) (((v) & (sdd)->rx_fifomask) >> \
+ __ffs((sdd)->rx_fifomask))
+#define FIFO_DEPTH(i) ((FIFO_LVL_MASK(i) >> 1) + 1)
#define S3C64XX_SPI_MAX_TRAILCNT 0x3ff
#define S3C64XX_SPI_TRAILCNT_OFF 19
-#define S3C64XX_SPI_TRAILCNT S3C64XX_SPI_MAX_TRAILCNT
-
#define S3C64XX_SPI_POLLING_SIZE 32
#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
@@ -131,8 +137,13 @@ struct s3c64xx_spi_dma_data {
/**
* struct s3c64xx_spi_port_config - SPI Controller hardware info
- * @fifo_lvl_mask: Bit-mask for {TX|RX}_FIFO_LVL bits in SPI_STATUS register.
- * @rx_lvl_offset: Bit offset of RX_FIFO_LVL bits in SPI_STATUS regiter.
+ * @fifo_lvl_mask: [DEPRECATED] use @{rx, tx}_fifomask instead.
+ * @rx_lvl_offset: [DEPRECATED] use @{rx,tx}_fifomask instead.
+ * @fifo_depth: depth of the FIFO.
+ * @rx_fifomask: SPI_STATUS.RX_FIFO_LVL mask. Shifted mask defining the field's
+ * length and position.
+ * @tx_fifomask: SPI_STATUS.TX_FIFO_LVL mask. Shifted mask defining the field's
+ * length and position.
* @tx_st_done: Bit offset of TX_DONE bit in SPI_STATUS regiter.
* @clk_div: Internal clock divider
* @quirks: Bitmask of known quirks
@@ -141,6 +152,7 @@ struct s3c64xx_spi_dma_data {
* prescaler unit.
* @clk_ioclk: True if clock is present on this device
* @has_loopback: True if loopback mode can be supported
+ * @use_32bit_io: True if the SoC allows only 32-bit register accesses.
*
* The Samsung s3c64xx SPI controller are used on various Samsung SoC's but
* differ in some aspects such as the size of the fifo and spi bus clock
@@ -150,6 +162,9 @@ struct s3c64xx_spi_dma_data {
struct s3c64xx_spi_port_config {
int fifo_lvl_mask[MAX_SPI_PORTS];
int rx_lvl_offset;
+ unsigned int fifo_depth;
+ u32 rx_fifomask;
+ u32 tx_fifomask;
int tx_st_done;
int quirks;
int clk_div;
@@ -157,6 +172,7 @@ struct s3c64xx_spi_port_config {
bool clk_from_cmu;
bool clk_ioclk;
bool has_loopback;
+ bool use_32bit_io;
};
/**
@@ -177,8 +193,13 @@ struct s3c64xx_spi_port_config {
* @cur_speed: Current clock speed
* @rx_dma: Local receive DMA data (e.g. chan and direction)
* @tx_dma: Local transmit DMA data (e.g. chan and direction)
- * @port_conf: Local SPI port configuartion data
- * @port_id: Port identification number
+ * @port_conf: Local SPI port configuration data
+ * @port_id: [DEPRECATED] use @{rx,tx}_fifomask instead.
+ * @fifo_depth: depth of the FIFO.
+ * @rx_fifomask: SPI_STATUS.RX_FIFO_LVL mask. Shifted mask defining the field's
+ * length and position.
+ * @tx_fifomask: SPI_STATUS.TX_FIFO_LVL mask. Shifted mask defining the field's
+ * length and position.
*/
struct s3c64xx_spi_driver_data {
void __iomem *regs;
@@ -198,6 +219,9 @@ struct s3c64xx_spi_driver_data {
struct s3c64xx_spi_dma_data tx_dma;
const struct s3c64xx_spi_port_config *port_conf;
unsigned int port_id;
+ unsigned int fifo_depth;
+ u32 rx_fifomask;
+ u32 tx_fifomask;
};
static void s3c64xx_flush_fifo(struct s3c64xx_spi_driver_data *sdd)
@@ -276,8 +300,8 @@ static void s3c64xx_spi_dmacb(void *data)
spin_unlock_irqrestore(&sdd->lock, flags);
}
-static int prepare_dma(struct s3c64xx_spi_dma_data *dma,
- struct sg_table *sgt)
+static int s3c64xx_prepare_dma(struct s3c64xx_spi_dma_data *dma,
+ struct sg_table *sgt)
{
struct s3c64xx_spi_driver_data *sdd;
struct dma_slave_config config;
@@ -289,20 +313,20 @@ static int prepare_dma(struct s3c64xx_spi_dma_data *dma,
if (dma->direction == DMA_DEV_TO_MEM) {
sdd = container_of((void *)dma,
struct s3c64xx_spi_driver_data, rx_dma);
- config.direction = dma->direction;
config.src_addr = sdd->sfr_start + S3C64XX_SPI_RX_DATA;
config.src_addr_width = sdd->cur_bpw / 8;
config.src_maxburst = 1;
- dmaengine_slave_config(dma->ch, &config);
} else {
sdd = container_of((void *)dma,
struct s3c64xx_spi_driver_data, tx_dma);
- config.direction = dma->direction;
config.dst_addr = sdd->sfr_start + S3C64XX_SPI_TX_DATA;
config.dst_addr_width = sdd->cur_bpw / 8;
config.dst_maxburst = 1;
- dmaengine_slave_config(dma->ch, &config);
}
+ config.direction = dma->direction;
+ ret = dmaengine_slave_config(dma->ch, &config);
+ if (ret)
+ return ret;
desc = dmaengine_prep_slave_sg(dma->ch, sgt->sgl, sgt->nents,
dma->direction, DMA_PREP_INTERRUPT);
@@ -319,7 +343,7 @@ static int prepare_dma(struct s3c64xx_spi_dma_data *dma,
ret = dma_submit_error(dma->cookie);
if (ret) {
dev_err(&sdd->pdev->dev, "DMA submission failed");
- return -EIO;
+ return ret;
}
dma_async_issue_pending(dma->ch);
@@ -405,12 +429,60 @@ static bool s3c64xx_spi_can_dma(struct spi_controller *host,
{
struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host);
- if (sdd->rx_dma.ch && sdd->tx_dma.ch) {
- return xfer->len > (FIFO_LVL_MASK(sdd) >> 1) + 1;
- } else {
- return false;
+ if (sdd->rx_dma.ch && sdd->tx_dma.ch)
+ return xfer->len > sdd->fifo_depth;
+
+ return false;
+}
+
+static void s3c64xx_iowrite8_32_rep(volatile void __iomem *addr,
+ const void *buffer, unsigned int count)
+{
+ if (count) {
+ const u8 *buf = buffer;
+
+ do {
+ __raw_writel(*buf++, addr);
+ } while (--count);
}
+}
+static void s3c64xx_iowrite16_32_rep(volatile void __iomem *addr,
+ const void *buffer, unsigned int count)
+{
+ if (count) {
+ const u16 *buf = buffer;
+
+ do {
+ __raw_writel(*buf++, addr);
+ } while (--count);
+ }
+}
+
+static void s3c64xx_iowrite_rep(const struct s3c64xx_spi_driver_data *sdd,
+ struct spi_transfer *xfer)
+{
+ void __iomem *addr = sdd->regs + S3C64XX_SPI_TX_DATA;
+ const void *buf = xfer->tx_buf;
+ unsigned int len = xfer->len;
+
+ switch (sdd->cur_bpw) {
+ case 32:
+ iowrite32_rep(addr, buf, len / 4);
+ break;
+ case 16:
+ if (sdd->port_conf->use_32bit_io)
+ s3c64xx_iowrite16_32_rep(addr, buf, len / 2);
+ else
+ iowrite16_rep(addr, buf, len / 2);
+ break;
+ default:
+ if (sdd->port_conf->use_32bit_io)
+ s3c64xx_iowrite8_32_rep(addr, buf, len);
+ else
+ iowrite8_rep(addr, buf, len);
+ break;
+ }
}
static int s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd,
@@ -444,22 +516,9 @@ static int s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd,
chcfg |= S3C64XX_SPI_CH_TXCH_ON;
if (dma_mode) {
modecfg |= S3C64XX_SPI_MODE_TXDMA_ON;
- ret = prepare_dma(&sdd->tx_dma, &xfer->tx_sg);
+ ret = s3c64xx_prepare_dma(&sdd->tx_dma, &xfer->tx_sg);
} else {
- switch (sdd->cur_bpw) {
- case 32:
- iowrite32_rep(regs + S3C64XX_SPI_TX_DATA,
- xfer->tx_buf, xfer->len / 4);
- break;
- case 16:
- iowrite16_rep(regs + S3C64XX_SPI_TX_DATA,
- xfer->tx_buf, xfer->len / 2);
- break;
- default:
- iowrite8_rep(regs + S3C64XX_SPI_TX_DATA,
- xfer->tx_buf, xfer->len);
- break;
- }
+ s3c64xx_iowrite_rep(sdd, xfer);
}
}
@@ -476,7 +535,7 @@ static int s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd,
writel(((xfer->len * 8 / sdd->cur_bpw) & 0xffff)
| S3C64XX_SPI_PACKET_CNT_EN,
regs + S3C64XX_SPI_PACKET_CNT);
- ret = prepare_dma(&sdd->rx_dma, &xfer->rx_sg);
+ ret = s3c64xx_prepare_dma(&sdd->rx_dma, &xfer->rx_sg);
}
}
@@ -495,9 +554,7 @@ static u32 s3c64xx_spi_wait_for_timeout(struct s3c64xx_spi_driver_data *sdd,
void __iomem *regs = sdd->regs;
unsigned long val = 1;
u32 status;
-
- /* max fifo depth available */
- u32 max_fifo = (FIFO_LVL_MASK(sdd) >> 1) + 1;
+ u32 max_fifo = sdd->fifo_depth;
if (timeout_ms)
val = msecs_to_loops(timeout_ms);
@@ -528,7 +585,7 @@ static int s3c64xx_wait_for_dma(struct s3c64xx_spi_driver_data *sdd,
/*
* If the previous xfer was completed within timeout, then
- * proceed further else return -EIO.
+ * proceed further else return -ETIMEDOUT.
* DmaTx returns after simply writing data in the FIFO,
* w/o waiting for real transmission on the bus to finish.
* DmaRx returns only after Dma read data from FIFO which
@@ -549,7 +606,7 @@ static int s3c64xx_wait_for_dma(struct s3c64xx_spi_driver_data *sdd,
/* If timed out while checking rx/tx status return error */
if (!val)
- return -EIO;
+ return -ETIMEDOUT;
return 0;
}
@@ -579,7 +636,7 @@ static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd,
if (use_irq) {
val = msecs_to_jiffies(ms);
if (!wait_for_completion_timeout(&sdd->xfer_completion, val))
- return -EIO;
+ return -ETIMEDOUT;
}
val = msecs_to_loops(ms);
@@ -604,7 +661,7 @@ static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd,
* For any size less than the fifo size the below code is
* executed atleast once.
*/
- loops = xfer->len / ((FIFO_LVL_MASK(sdd) >> 1) + 1);
+ loops = xfer->len / sdd->fifo_depth;
buf = xfer->rx_buf;
do {
/* wait for data to be received in the fifo */
@@ -741,7 +798,7 @@ static int s3c64xx_spi_transfer_one(struct spi_controller *host,
struct spi_transfer *xfer)
{
struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host);
- const unsigned int fifo_len = (FIFO_LVL_MASK(sdd) >> 1) + 1;
+ const unsigned int fifo_len = sdd->fifo_depth;
const void *tx_buf = NULL;
void *rx_buf = NULL;
int target_len = 0, origin_len = 0;
@@ -1093,8 +1150,7 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd)
val = readl(regs + S3C64XX_SPI_MODE_CFG);
val &= ~S3C64XX_SPI_MODE_4BURST;
- val &= ~(S3C64XX_SPI_MAX_TRAILCNT << S3C64XX_SPI_TRAILCNT_OFF);
- val |= (S3C64XX_SPI_TRAILCNT << S3C64XX_SPI_TRAILCNT_OFF);
+ val |= (S3C64XX_SPI_MAX_TRAILCNT << S3C64XX_SPI_TRAILCNT_OFF);
writel(val, regs + S3C64XX_SPI_MODE_CFG);
s3c64xx_flush_fifo(sdd);
@@ -1111,14 +1167,14 @@ static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev)
return ERR_PTR(-ENOMEM);
if (of_property_read_u32(dev->of_node, "samsung,spi-src-clk", &temp)) {
- dev_warn(dev, "spi bus clock parent not specified, using clock at index 0 as parent\n");
+ dev_dbg(dev, "spi bus clock parent not specified, using clock at index 0 as parent\n");
sci->src_clk_nr = 0;
} else {
sci->src_clk_nr = temp;
}
if (of_property_read_u32(dev->of_node, "num-cs", &temp)) {
- dev_warn(dev, "number of chip select lines not specified, assuming 1 chip select line\n");
+ dev_dbg(dev, "number of chip select lines not specified, assuming 1 chip select line\n");
sci->num_cs = 1;
} else {
sci->num_cs = temp;
@@ -1146,6 +1202,48 @@ static inline const struct s3c64xx_spi_port_config *s3c64xx_spi_get_port_config(
return (const struct s3c64xx_spi_port_config *)platform_get_device_id(pdev)->driver_data;
}
+static int s3c64xx_spi_set_port_id(struct platform_device *pdev,
+ struct s3c64xx_spi_driver_data *sdd)
+{
+ const struct s3c64xx_spi_port_config *port_conf = sdd->port_conf;
+ int ret;
+
+ if (port_conf->rx_fifomask && port_conf->tx_fifomask)
+ return 0;
+
+ if (pdev->dev.of_node) {
+ ret = of_alias_get_id(pdev->dev.of_node, "spi");
+ if (ret < 0)
+ return dev_err_probe(&pdev->dev, ret,
+ "Failed to get alias id\n");
+ sdd->port_id = ret;
+ } else {
+ if (pdev->id < 0)
+ return dev_err_probe(&pdev->dev, -EINVAL,
+ "Negative platform ID is not allowed\n");
+ sdd->port_id = pdev->id;
+ }
+
+ return 0;
+}
+
+static void s3c64xx_spi_set_fifomask(struct s3c64xx_spi_driver_data *sdd)
+{
+ const struct s3c64xx_spi_port_config *port_conf = sdd->port_conf;
+
+ if (port_conf->rx_fifomask)
+ sdd->rx_fifomask = port_conf->rx_fifomask;
+ else
+ sdd->rx_fifomask = FIFO_LVL_MASK(sdd) <<
+ port_conf->rx_lvl_offset;
+
+ if (port_conf->tx_fifomask)
+ sdd->tx_fifomask = port_conf->tx_fifomask;
+ else
+ sdd->tx_fifomask = FIFO_LVL_MASK(sdd) <<
+ S3C64XX_SPI_ST_TX_FIFO_LVL_SHIFT;
+}
+
static int s3c64xx_spi_probe(struct platform_device *pdev)
{
struct resource *mem_res;
@@ -1181,15 +1279,18 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
sdd->host = host;
sdd->cntrlr_info = sci;
sdd->pdev = pdev;
- if (pdev->dev.of_node) {
- ret = of_alias_get_id(pdev->dev.of_node, "spi");
- if (ret < 0)
- return dev_err_probe(&pdev->dev, ret,
- "Failed to get alias id\n");
- sdd->port_id = ret;
- } else {
- sdd->port_id = pdev->id;
- }
+
+ ret = s3c64xx_spi_set_port_id(pdev, sdd);
+ if (ret)
+ return ret;
+
+ if (sdd->port_conf->fifo_depth)
+ sdd->fifo_depth = sdd->port_conf->fifo_depth;
+ else if (of_property_read_u32(pdev->dev.of_node, "fifo-depth",
+ &sdd->fifo_depth))
+ sdd->fifo_depth = FIFO_DEPTH(sdd);
+
+ s3c64xx_spi_set_fifomask(sdd);
sdd->cur_bpw = 8;
@@ -1197,7 +1298,7 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
sdd->rx_dma.direction = DMA_DEV_TO_MEM;
host->dev.of_node = pdev->dev.of_node;
- host->bus_num = sdd->port_id;
+ host->bus_num = -1;
host->setup = s3c64xx_spi_setup;
host->cleanup = s3c64xx_spi_cleanup;
host->prepare_transfer_hardware = s3c64xx_spi_prepare_transfer;
@@ -1278,9 +1379,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
}
dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d Targets attached\n",
- sdd->port_id, host->num_chipselect);
+ host->bus_num, host->num_chipselect);
dev_dbg(&pdev->dev, "\tIOmem=[%pR]\tFIFO %dbytes\n",
- mem_res, (FIFO_LVL_MASK(sdd) >> 1) + 1);
+ mem_res, sdd->fifo_depth);
pm_runtime_mark_last_busy(&pdev->dev);
pm_runtime_put_autosuspend(&pdev->dev);
@@ -1319,8 +1420,9 @@ static int s3c64xx_spi_suspend(struct device *dev)
{
struct spi_controller *host = dev_get_drvdata(dev);
struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host);
+ int ret;
- int ret = spi_controller_suspend(host);
+ ret = spi_controller_suspend(host);
if (ret)
return ret;
@@ -1408,7 +1510,9 @@ static const struct dev_pm_ops s3c64xx_spi_pm = {
};
static const struct s3c64xx_spi_port_config s3c2443_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x7f },
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 13,
.tx_st_done = 21,
.clk_div = 2,
@@ -1416,14 +1520,18 @@ static const struct s3c64xx_spi_port_config s3c2443_spi_port_config = {
};
static const struct s3c64xx_spi_port_config s3c6410_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x7f, 0x7F },
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 13,
.tx_st_done = 21,
.clk_div = 2,
};
static const struct s3c64xx_spi_port_config s5pv210_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x1ff, 0x7F },
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 15,
.tx_st_done = 25,
.clk_div = 2,
@@ -1431,7 +1539,9 @@ static const struct s3c64xx_spi_port_config s5pv210_spi_port_config = {
};
static const struct s3c64xx_spi_port_config exynos4_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F },
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 15,
.tx_st_done = 25,
.clk_div = 2,
@@ -1441,7 +1551,9 @@ static const struct s3c64xx_spi_port_config exynos4_spi_port_config = {
};
static const struct s3c64xx_spi_port_config exynos7_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F, 0x7F, 0x7F, 0x1ff},
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 15,
.tx_st_done = 25,
.clk_div = 2,
@@ -1451,7 +1563,9 @@ static const struct s3c64xx_spi_port_config exynos7_spi_port_config = {
};
static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x1ff, 0x7f, 0x7f, 0x7f, 0x7f, 0x1ff},
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 15,
.tx_st_done = 25,
.clk_div = 2,
@@ -1461,9 +1575,23 @@ static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
.quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
};
+static const struct s3c64xx_spi_port_config exynos850_spi_port_config = {
+ .fifo_depth = 64,
+ .rx_fifomask = S3C64XX_SPI_ST_RX_FIFO_RDY_V2,
+ .tx_fifomask = S3C64XX_SPI_ST_TX_FIFO_RDY_V2,
+ .tx_st_done = 25,
+ .clk_div = 4,
+ .high_speed = true,
+ .clk_from_cmu = true,
+ .has_loopback = true,
+ .quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
+};
+
static const struct s3c64xx_spi_port_config exynosautov9_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x1ff, 0x1ff, 0x7f, 0x7f, 0x7f, 0x7f, 0x1ff, 0x7f,
0x7f, 0x7f, 0x7f, 0x7f},
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 15,
.tx_st_done = 25,
.clk_div = 4,
@@ -1475,7 +1603,9 @@ static const struct s3c64xx_spi_port_config exynosautov9_spi_port_config = {
};
static const struct s3c64xx_spi_port_config fsd_spi_port_config = {
+ /* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
.fifo_lvl_mask = { 0x7f, 0x7f, 0x7f, 0x7f, 0x7f},
+ /* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
.rx_lvl_offset = 15,
.tx_st_done = 25,
.clk_div = 2,
@@ -1485,6 +1615,19 @@ static const struct s3c64xx_spi_port_config fsd_spi_port_config = {
.quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
};
+static const struct s3c64xx_spi_port_config gs101_spi_port_config = {
+ .fifo_depth = 64,
+ .rx_fifomask = S3C64XX_SPI_ST_RX_FIFO_RDY_V2,
+ .tx_fifomask = S3C64XX_SPI_ST_TX_FIFO_RDY_V2,
+ .tx_st_done = 25,
+ .clk_div = 4,
+ .high_speed = true,
+ .clk_from_cmu = true,
+ .has_loopback = true,
+ .use_32bit_io = true,
+ .quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
+};
+
static const struct platform_device_id s3c64xx_spi_driver_ids[] = {
{
.name = "s3c2443-spi",
@@ -1497,29 +1640,35 @@ static const struct platform_device_id s3c64xx_spi_driver_ids[] = {
};
static const struct of_device_id s3c64xx_spi_dt_match[] = {
+ { .compatible = "google,gs101-spi",
+ .data = &gs101_spi_port_config,
+ },
{ .compatible = "samsung,s3c2443-spi",
- .data = (void *)&s3c2443_spi_port_config,
+ .data = &s3c2443_spi_port_config,
},
{ .compatible = "samsung,s3c6410-spi",
- .data = (void *)&s3c6410_spi_port_config,
+ .data = &s3c6410_spi_port_config,
},
{ .compatible = "samsung,s5pv210-spi",
- .data = (void *)&s5pv210_spi_port_config,
+ .data = &s5pv210_spi_port_config,
},
{ .compatible = "samsung,exynos4210-spi",
- .data = (void *)&exynos4_spi_port_config,
+ .data = &exynos4_spi_port_config,
},
{ .compatible = "samsung,exynos7-spi",
- .data = (void *)&exynos7_spi_port_config,
+ .data = &exynos7_spi_port_config,
},
{ .compatible = "samsung,exynos5433-spi",
- .data = (void *)&exynos5433_spi_port_config,
+ .data = &exynos5433_spi_port_config,
+ },
+ { .compatible = "samsung,exynos850-spi",
+ .data = &exynos850_spi_port_config,
},
{ .compatible = "samsung,exynosautov9-spi",
- .data = (void *)&exynosautov9_spi_port_config,
+ .data = &exynosautov9_spi_port_config,
},
{ .compatible = "tesla,fsd-spi",
- .data = (void *)&fsd_spi_port_config,
+ .data = &fsd_spi_port_config,
},
{ },
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-19 01:47:39 +0300