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Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/spidev-test', 'spi/topic/sunxi', 'spi/topic/tegra' and 'spi/topic/test' into spi-next

This commit is contained in:
Mark Brown 2017-04-26 15:58:16 +01:00
parent fbdd1b2aff 91b4634632 9006a7b322 3288d5cb40 bfca76185d 905e0b5ef9
commit d8f520727f
8 changed files with 263 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

119
drivers/spi/spi-loopback-test.c
View File

@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/ktime.h>
#include <linux/list.h>
#include <linux/list_sort.h>
#include <linux/module.h>
@ -76,9 +77,9 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_rx_align = ITERATE_ALIGN,
.transfer_count = 1,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
.rx_buf = RX(0),
},
@ -90,9 +91,9 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_rx_align = ITERATE_ALIGN,
.transfer_count = 1,
.transfers = {
{
.len = 1,
.tx_buf = TX(PAGE_SIZE - 4),
.rx_buf = RX(PAGE_SIZE - 4),
},
@ -103,9 +104,9 @@ static struct spi_test spi_tests[] = {
.fill_option = FILL_COUNT_8,
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.transfer_count = 1,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
},
},
@ -115,9 +116,9 @@ static struct spi_test spi_tests[] = {
.fill_option = FILL_COUNT_8,
.iterate_len = { ITERATE_MAX_LEN },
.iterate_rx_align = ITERATE_ALIGN,
.transfer_count = 1,
.transfers = {
{
.len = 1,
.rx_buf = RX(0),
},
},
@ -128,13 +129,12 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(0) | BIT(1),
.transfer_count = 2,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
},
{
.len = 1,
/* this is why we cant use ITERATE_MAX_LEN */
.tx_buf = TX(SPI_TEST_MAX_SIZE_HALF),
},
@ -145,10 +145,10 @@ static struct spi_test spi_tests[] = {
.fill_option = FILL_COUNT_8,
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(1),
.iterate_transfer_mask = BIT(0),
.transfer_count = 2,
.transfers = {
{
.len = 1,
.tx_buf = TX(64),
},
{
@ -162,14 +162,14 @@ static struct spi_test spi_tests[] = {
.fill_option = FILL_COUNT_8,
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(0),
.iterate_transfer_mask = BIT(1),
.transfer_count = 2,
.transfers = {
{
.len = 16,
.tx_buf = TX(0),
},
{
.len = 1,
.tx_buf = TX(64),
},
},
@ -180,13 +180,12 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(0) | BIT(1),
.transfer_count = 2,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
},
{
.len = 1,
.rx_buf = RX(0),
},
},
@ -197,9 +196,9 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(0),
.transfer_count = 2,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
},
{
@ -214,13 +213,13 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(1),
.transfer_count = 2,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
},
{
.len = 1,
.rx_buf = RX(0),
},
},
@ -231,14 +230,13 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(0) | BIT(1),
.transfer_count = 2,
.transfers = {
{
.len = 1,
.tx_buf = TX(0),
.rx_buf = RX(0),
},
{
.len = 1,
/* making sure we align without overwrite
* the reason we can not use ITERATE_MAX_LEN
*/
@ -253,9 +251,9 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(0),
.transfer_count = 2,
.transfers = {
{
.len = 1,
/* making sure we align without overwrite */
.tx_buf = TX(1024),
.rx_buf = RX(1024),
@ -274,6 +272,7 @@ static struct spi_test spi_tests[] = {
.iterate_len = { ITERATE_MAX_LEN },
.iterate_tx_align = ITERATE_ALIGN,
.iterate_transfer_mask = BIT(1),
.transfer_count = 2,
.transfers = {
{
.len = 1,
@ -281,13 +280,31 @@ static struct spi_test spi_tests[] = {
.rx_buf = RX(0),
},
{
.len = 1,
/* making sure we align without overwrite */
.tx_buf = TX(1024),
.rx_buf = RX(1024),
},
},
},
{
.description = "two tx+rx transfers - delay after transfer",
.fill_option = FILL_COUNT_8,
.iterate_len = { ITERATE_MAX_LEN },
.iterate_transfer_mask = BIT(0) | BIT(1),
.transfer_count = 2,
.transfers = {
{
.tx_buf = TX(0),
.rx_buf = RX(0),
.delay_usecs = 1000,
},
{
.tx_buf = TX(0),
.rx_buf = RX(0),
.delay_usecs = 1000,
},
},
},
{ /* end of tests sequence */ }
};
@ -495,6 +512,36 @@ static int spi_check_rx_ranges(struct spi_device *spi,
return ret;
}
static int spi_test_check_elapsed_time(struct spi_device *spi,
struct spi_test *test)
{
int i;
unsigned long long estimated_time = 0;
unsigned long long delay_usecs = 0;
for (i = 0; i < test->transfer_count; i++) {
struct spi_transfer *xfer = test->transfers + i;
unsigned long long nbits = (unsigned long long)BITS_PER_BYTE *
xfer->len;
delay_usecs += xfer->delay_usecs;
if (!xfer->speed_hz)
continue;
estimated_time += div_u64(nbits * NSEC_PER_SEC, xfer->speed_hz);
}
estimated_time += delay_usecs * NSEC_PER_USEC;
if (test->elapsed_time < estimated_time) {
dev_err(&spi->dev,
"elapsed time %lld ns is shorter than minimum estimated time %lld ns\n",
test->elapsed_time, estimated_time);
return -EINVAL;
}
return 0;
}
static int spi_test_check_loopback_result(struct spi_device *spi,
struct spi_message *msg,
void *tx, void *rx)
@ -518,11 +565,11 @@ static int spi_test_check_loopback_result(struct spi_device *spi,
/* if applicable to transfer check that rx_buf is equal to tx_buf */
list_for_each_entry(xfer, &msg->transfers, transfer_list) {
/* if there is no rx, then no check is needed */
if (!xfer->rx_buf)
if (!xfer->len || !xfer->rx_buf)
continue;
/* so depending on tx_buf we need to handle things */
if (xfer->tx_buf) {
for (i = 1; i < xfer->len; i++) {
for (i = 0; i < xfer->len; i++) {
txb = ((u8 *)xfer->tx_buf)[i];
rxb = ((u8 *)xfer->rx_buf)[i];
if (txb != rxb)
@ -760,15 +807,6 @@ static int spi_test_run_iter(struct spi_device *spi,
/* copy the test template to test */
memcpy(&test, testtemplate, sizeof(test));
/* set up test->transfers to the correct count */
if (!test.transfer_count) {
for (i = 0;
(i < SPI_TEST_MAX_TRANSFERS) && test.transfers[i].len;
i++) {
test.transfer_count++;
}
}
/* if iterate_transfer_mask is not set,
* then set it to first transfer only
*/
@ -814,8 +852,7 @@ static int spi_test_run_iter(struct spi_device *spi,
/* only when bit in transfer mask is set */
if (!(test.iterate_transfer_mask & BIT(i)))
continue;
if (len)
test.transfers[i].len = len;
test.transfers[i].len = len;
if (test.transfers[i].tx_buf)
test.transfers[i].tx_buf += tx_off;
if (test.transfers[i].tx_buf)
@ -845,12 +882,16 @@ int spi_test_execute_msg(struct spi_device *spi, struct spi_test *test,
/* only if we do not simulate */
if (!simulate_only) {
ktime_t start;
/* dump the complete message before and after the transfer */
if (dump_messages == 3)
spi_test_dump_message(spi, msg, true);
start = ktime_get();
/* run spi message */
ret = spi_sync(spi, msg);
test->elapsed_time = ktime_to_ns(ktime_sub(ktime_get(), start));
if (ret == -ETIMEDOUT) {
dev_info(&spi->dev,
"spi-message timed out - reruning...\n");
@ -876,6 +917,10 @@ int spi_test_execute_msg(struct spi_device *spi, struct spi_test *test,
/* run rx-buffer tests */
ret = spi_test_check_loopback_result(spi, msg, tx, rx);
if (ret)
goto exit;
ret = spi_test_check_elapsed_time(spi, test);
}
/* if requested or on error dump message (including data) */
@ -925,15 +970,6 @@ int spi_test_run_test(struct spi_device *spi, const struct spi_test *test,
/* iterate over all the iterable values using macros
* (to make it a bit more readable...
*/
#define FOR_EACH_ITERATE(var, defaultvalue) \
for (idx_##var = -1, var = defaultvalue; \
((idx_##var < 0) || \
( \
(idx_##var < SPI_TEST_MAX_ITERATE) && \
(var = test->iterate_##var[idx_##var]) \
) \
); \
idx_##var++)
#define FOR_EACH_ALIGNMENT(var) \
for (var = 0; \
var < (test->iterate_##var ? \
@ -943,7 +979,8 @@ int spi_test_run_test(struct spi_device *spi, const struct spi_test *test,
1); \
var++)
FOR_EACH_ITERATE(len, 0) {
for (idx_len = 0; idx_len < SPI_TEST_MAX_ITERATE &&
(len = test->iterate_len[idx_len]) != -1; idx_len++) {
FOR_EACH_ALIGNMENT(tx_align) {
FOR_EACH_ALIGNMENT(rx_align) {
/* and run the iteration */

94
drivers/spi/spi-sun6i.c
View File

@ -46,13 +46,19 @@
#define SUN6I_TFR_CTL_XCH BIT(31)
#define SUN6I_INT_CTL_REG 0x10
#define SUN6I_INT_CTL_RF_RDY BIT(0)
#define SUN6I_INT_CTL_TF_ERQ BIT(4)
#define SUN6I_INT_CTL_RF_OVF BIT(8)
#define SUN6I_INT_CTL_TC BIT(12)
#define SUN6I_INT_STA_REG 0x14
#define SUN6I_FIFO_CTL_REG 0x18
#define SUN6I_FIFO_CTL_RF_RDY_TRIG_LEVEL_MASK 0xff
#define SUN6I_FIFO_CTL_RF_RDY_TRIG_LEVEL_BITS 0
#define SUN6I_FIFO_CTL_RF_RST BIT(15)
#define SUN6I_FIFO_CTL_TF_ERQ_TRIG_LEVEL_MASK 0xff
#define SUN6I_FIFO_CTL_TF_ERQ_TRIG_LEVEL_BITS 16
#define SUN6I_FIFO_CTL_TF_RST BIT(31)
#define SUN6I_FIFO_STA_REG 0x1c
@ -68,14 +74,16 @@
#define SUN6I_CLK_CTL_CDR1(div) (((div) & SUN6I_CLK_CTL_CDR1_MASK) << 8)
#define SUN6I_CLK_CTL_DRS BIT(12)
#define SUN6I_MAX_XFER_SIZE 0xffffff
#define SUN6I_BURST_CNT_REG 0x30
#define SUN6I_BURST_CNT(cnt) ((cnt) & 0xffffff)
#define SUN6I_BURST_CNT(cnt) ((cnt) & SUN6I_MAX_XFER_SIZE)
#define SUN6I_XMIT_CNT_REG 0x34
#define SUN6I_XMIT_CNT(cnt) ((cnt) & 0xffffff)
#define SUN6I_XMIT_CNT(cnt) ((cnt) & SUN6I_MAX_XFER_SIZE)
#define SUN6I_BURST_CTL_CNT_REG 0x38
#define SUN6I_BURST_CTL_CNT_STC(cnt) ((cnt) & 0xffffff)
#define SUN6I_BURST_CTL_CNT_STC(cnt) ((cnt) & SUN6I_MAX_XFER_SIZE)
#define SUN6I_TXDATA_REG 0x200
#define SUN6I_RXDATA_REG 0x300
@ -105,6 +113,31 @@ static inline void sun6i_spi_write(struct sun6i_spi *sspi, u32 reg, u32 value)
writel(value, sspi->base_addr + reg);
}
static inline u32 sun6i_spi_get_tx_fifo_count(struct sun6i_spi *sspi)
{
u32 reg = sun6i_spi_read(sspi, SUN6I_FIFO_STA_REG);
reg >>= SUN6I_FIFO_STA_TF_CNT_BITS;
return reg & SUN6I_FIFO_STA_TF_CNT_MASK;
}
static inline void sun6i_spi_enable_interrupt(struct sun6i_spi *sspi, u32 mask)
{
u32 reg = sun6i_spi_read(sspi, SUN6I_INT_CTL_REG);
reg |= mask;
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, reg);
}
static inline void sun6i_spi_disable_interrupt(struct sun6i_spi *sspi, u32 mask)
{
u32 reg = sun6i_spi_read(sspi, SUN6I_INT_CTL_REG);
reg &= ~mask;
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, reg);
}
static inline void sun6i_spi_drain_fifo(struct sun6i_spi *sspi, int len)
{
u32 reg, cnt;
@ -127,10 +160,13 @@ static inline void sun6i_spi_drain_fifo(struct sun6i_spi *sspi, int len)
static inline void sun6i_spi_fill_fifo(struct sun6i_spi *sspi, int len)
{
u32 cnt;
u8 byte;
if (len > sspi->len)
len = sspi->len;
/* See how much data we can fit */
cnt = sspi->fifo_depth - sun6i_spi_get_tx_fifo_count(sspi);
len = min3(len, (int)cnt, sspi->len);
while (len--) {
byte = sspi->tx_buf ? *sspi->tx_buf++ : 0;
@ -158,9 +194,7 @@ static void sun6i_spi_set_cs(struct spi_device *spi, bool enable)
static size_t sun6i_spi_max_transfer_size(struct spi_device *spi)
{
struct sun6i_spi *sspi = spi_master_get_devdata(spi->master);
return sspi->fifo_depth - 1;
return SUN6I_MAX_XFER_SIZE - 1;
}
static int sun6i_spi_transfer_one(struct spi_master *master,
@ -170,12 +204,12 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
struct sun6i_spi *sspi = spi_master_get_devdata(master);
unsigned int mclk_rate, div, timeout;
unsigned int start, end, tx_time;
unsigned int trig_level;
unsigned int tx_len = 0;
int ret = 0;
u32 reg;
/* We don't support transfer larger than the FIFO */
if (tfr->len > sspi->fifo_depth)
if (tfr->len > SUN6I_MAX_XFER_SIZE)
return -EINVAL;
reinit_completion(&sspi->done);
@ -190,6 +224,17 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
sun6i_spi_write(sspi, SUN6I_FIFO_CTL_REG,
SUN6I_FIFO_CTL_RF_RST | SUN6I_FIFO_CTL_TF_RST);
/*
* Setup FIFO interrupt trigger level
* Here we choose 3/4 of the full fifo depth, as it's the hardcoded
* value used in old generation of Allwinner SPI controller.
* (See spi-sun4i.c)
*/
trig_level = sspi->fifo_depth / 4 * 3;
sun6i_spi_write(sspi, SUN6I_FIFO_CTL_REG,
(trig_level << SUN6I_FIFO_CTL_RF_RDY_TRIG_LEVEL_BITS) |
(trig_level << SUN6I_FIFO_CTL_TF_ERQ_TRIG_LEVEL_BITS));
/*
* Setup the transfer control register: Chip Select,
* polarities, etc.
@ -274,6 +319,10 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
/* Enable the interrupts */
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, SUN6I_INT_CTL_TC);
sun6i_spi_enable_interrupt(sspi, SUN6I_INT_CTL_TC |
SUN6I_INT_CTL_RF_RDY);
if (tx_len > sspi->fifo_depth)
sun6i_spi_enable_interrupt(sspi, SUN6I_INT_CTL_TF_ERQ);
/* Start the transfer */
reg = sun6i_spi_read(sspi, SUN6I_TFR_CTL_REG);
@ -293,8 +342,6 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
goto out;
}
sun6i_spi_drain_fifo(sspi, sspi->fifo_depth);
out:
sun6i_spi_write(sspi, SUN6I_INT_CTL_REG, 0);
@ -309,10 +356,33 @@ static irqreturn_t sun6i_spi_handler(int irq, void *dev_id)
/* Transfer complete */
if (status & SUN6I_INT_CTL_TC) {
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, SUN6I_INT_CTL_TC);
sun6i_spi_drain_fifo(sspi, sspi->fifo_depth);
complete(&sspi->done);
return IRQ_HANDLED;
}
/* Receive FIFO 3/4 full */
if (status & SUN6I_INT_CTL_RF_RDY) {
sun6i_spi_drain_fifo(sspi, SUN6I_FIFO_DEPTH);
/* Only clear the interrupt _after_ draining the FIFO */
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, SUN6I_INT_CTL_RF_RDY);
return IRQ_HANDLED;
}
/* Transmit FIFO 3/4 empty */
if (status & SUN6I_INT_CTL_TF_ERQ) {
sun6i_spi_fill_fifo(sspi, SUN6I_FIFO_DEPTH);
if (!sspi->len)
/* nothing left to transmit */
sun6i_spi_disable_interrupt(sspi, SUN6I_INT_CTL_TF_ERQ);
/* Only clear the interrupt _after_ re-seeding the FIFO */
sun6i_spi_write(sspi, SUN6I_INT_STA_REG, SUN6I_INT_CTL_TF_ERQ);
return IRQ_HANDLED;
}
return IRQ_NONE;
}

2
drivers/spi/spi-tegra114.c
View File

@ -837,7 +837,7 @@ static int tegra_spi_transfer_one_message(struct spi_master *master,
SPI_DMA_TIMEOUT);
if (WARN_ON(ret == 0)) {
dev_err(tspi->dev,
"spi trasfer timeout, err %d\n", ret);
"spi transfer timeout, err %d\n", ret);
ret = -EIO;
goto complete_xfer;
}

2
drivers/spi/spi-tegra20-sflash.c
View File

@ -341,7 +341,7 @@ static int tegra_sflash_transfer_one_message(struct spi_master *master,
SPI_DMA_TIMEOUT);
if (WARN_ON(ret == 0)) {
dev_err(tsd->dev,
"spi trasfer timeout, err %d\n", ret);
"spi transfer timeout, err %d\n", ret);
ret = -EIO;
goto exit;
}

2
drivers/spi/spi-tegra20-slink.c
View File

@ -824,7 +824,7 @@ static int tegra_slink_transfer_one(struct spi_master *master,
SLINK_DMA_TIMEOUT);
if (WARN_ON(ret == 0)) {
dev_err(tspi->dev,
"spi trasfer timeout, err %d\n", ret);
"spi transfer timeout, err %d\n", ret);
return -EIO;
}

21
drivers/spi/spi-test.h
View File

@ -48,9 +48,8 @@
*
* @msg: a template @spi_message usedfor the default settings
* @transfers: array of @spi_transfers that are part of the
* resulting spi_message. The first transfer with len == 0
* signifies the end of the list
* @transfer_count: normally computed number of transfers with len > 0
* resulting spi_message.
* @transfer_count: number of transfers
*
* @run_test: run a specific spi_test - this allows to override
* the default implementation of @spi_test_run_transfer
@ -62,8 +61,7 @@
* @expected_return: the expected return code - in some cases we want to
* test also for error conditions
*
* @iterate_len: list of length to iterate on (in addition to the
* explicitly set @spi_transfer.len)
* @iterate_len: list of length to iterate on
* @iterate_tx_align: change the alignment of @spi_transfer.tx_buf
* for all values in the below range if set.
* the ranges are:
@ -77,6 +75,7 @@
* @fill_option: define the way how tx_buf is filled
* @fill_pattern: fill pattern to apply to the tx_buf
* (used in some of the @fill_options)
* @elapsed_time: elapsed time in nanoseconds
*/
struct spi_test {
@ -89,7 +88,7 @@ struct spi_test {
int (*execute_msg)(struct spi_device *spi, struct spi_test *test,
void *tx, void *rx);
int expected_return;
/* iterate over all the non-zero values */
/* iterate over all values, terminated by a -1 */
int iterate_len[SPI_TEST_MAX_ITERATE];
int iterate_tx_align;
int iterate_rx_align;
@ -110,6 +109,7 @@ struct spi_test {
#define FILL_TRANSFER_BYTE_32 11 /* fill with the transfer byte - 32 bit */
#define FILL_TRANSFER_NUM 16 /* fill with the transfer number */
u32 fill_pattern;
unsigned long long elapsed_time;
};
/* default implementation for @spi_test.run_test */
@ -126,11 +126,12 @@ int spi_test_execute_msg(struct spi_device *spi,
int spi_test_run_tests(struct spi_device *spi,
struct spi_test *tests);
/* some of the default @spi_transfer.len to test */
#define ITERATE_LEN 2, 3, 7, 11, 16, 31, 32, 64, 97, 128, 251, 256, \
#define ITERATE_LEN_LIST 0, 1, 2, 3, 7, 11, 16, 31, 32, 64, 97, 128, 251, 256, \
1021, 1024, 1031, 4093, PAGE_SIZE, 4099, 65536, 65537
#define ITERATE_MAX_LEN ITERATE_LEN, SPI_TEST_MAX_SIZE - 1, SPI_TEST_MAX_SIZE
/* some of the default @spi_transfer.len to test, terminated by a -1 */
#define ITERATE_LEN ITERATE_LEN_LIST, -1
#define ITERATE_MAX_LEN ITERATE_LEN_LIST, (SPI_TEST_MAX_SIZE - 1), \
SPI_TEST_MAX_SIZE, -1
/* the default alignment to test */
#define ITERATE_ALIGN sizeof(int)

1
drivers/spi/spidev.c
View File

@ -697,6 +697,7 @@ static const struct of_device_id spidev_dt_ids[] = {
{ .compatible = "rohm,dh2228fv" },
{ .compatible = "lineartechnology,ltc2488" },
{ .compatible = "ge,achc" },
{ .compatible = "semtech,sx1301" },
{},
};
MODULE_DEVICE_TABLE(of, spidev_dt_ids);

93
tools/spi/spidev_test.c
View File

@ -18,6 +18,7 @@
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <time.h>
#include <sys/ioctl.h>
#include <linux/ioctl.h>
#include <sys/stat.h>
@ -40,6 +41,9 @@ static char *output_file;
static uint32_t speed = 500000;
static uint16_t delay;
static int verbose;
static int transfer_size;
static int iterations;
static int interval = 5; /* interval in seconds for showing transfer rate */
uint8_t default_tx[] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
@ -156,13 +160,13 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
close(out_fd);
}
if (verbose || !output_file)
if (verbose)
hex_dump(rx, len, 32, "RX");
}
static void print_usage(const char *prog)
{
printf("Usage: %s [-DsbdlHOLC3]\n", prog);
printf("Usage: %s [-DsbdlHOLC3vpNR24SI]\n", prog);
puts(" -D --device device to use (default /dev/spidev1.1)\n"
" -s --speed max speed (Hz)\n"
" -d --delay delay (usec)\n"
@ -180,7 +184,9 @@ static void print_usage(const char *prog)
" -N --no-cs no chip select\n"
" -R --ready slave pulls low to pause\n"
" -2 --dual dual transfer\n"
" -4 --quad quad transfer\n");
" -4 --quad quad transfer\n"
" -S --size transfer size\n"
" -I --iter iterations\n");
exit(1);
}
@ -205,11 +211,13 @@ static void parse_opts(int argc, char *argv[])
{ "dual", 0, 0, '2' },
{ "verbose", 0, 0, 'v' },
{ "quad", 0, 0, '4' },
{ "size", 1, 0, 'S' },
{ "iter", 1, 0, 'I' },
{ NULL, 0, 0, 0 },
};
int c;
c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR24p:v",
c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR24p:vS:I:",
lopts, NULL);
if (c == -1)
@ -270,6 +278,12 @@ static void parse_opts(int argc, char *argv[])
case '4':
mode |= SPI_TX_QUAD;
break;
case 'S':
transfer_size = atoi(optarg);
break;
case 'I':
iterations = atoi(optarg);
break;
default:
print_usage(argv[0]);
break;
@ -336,6 +350,57 @@ static void transfer_file(int fd, char *filename)
close(tx_fd);
}
static uint64_t _read_count;
static uint64_t _write_count;
static void show_transfer_rate(void)
{
static uint64_t prev_read_count, prev_write_count;
double rx_rate, tx_rate;
rx_rate = ((_read_count - prev_read_count) * 8) / (interval*1000.0);
tx_rate = ((_write_count - prev_write_count) * 8) / (interval*1000.0);
printf("rate: tx %.1fkbps, rx %.1fkbps\n", rx_rate, tx_rate);
prev_read_count = _read_count;
prev_write_count = _write_count;
}
static void transfer_buf(int fd, int len)
{
uint8_t *tx;
uint8_t *rx;
int i;
tx = malloc(len);
if (!tx)
pabort("can't allocate tx buffer");
for (i = 0; i < len; i++)
tx[i] = random();
rx = malloc(len);
if (!rx)
pabort("can't allocate rx buffer");
transfer(fd, tx, rx, len);
_write_count += len;
_read_count += len;
if (mode & SPI_LOOP) {
if (memcmp(tx, rx, len)) {
fprintf(stderr, "transfer error !\n");
hex_dump(tx, len, 32, "TX");
hex_dump(rx, len, 32, "RX");
exit(1);
}
}
free(rx);
free(tx);
}
int main(int argc, char *argv[])
{
int ret = 0;
@ -391,7 +456,25 @@ int main(int argc, char *argv[])
transfer_escaped_string(fd, input_tx);
else if (input_file)
transfer_file(fd, input_file);
else
else if (transfer_size) {
struct timespec last_stat;
clock_gettime(CLOCK_MONOTONIC, &last_stat);
while (iterations-- > 0) {
struct timespec current;
transfer_buf(fd, transfer_size);
clock_gettime(CLOCK_MONOTONIC, &current);
if (current.tv_sec - last_stat.tv_sec > interval) {
show_transfer_rate();
last_stat = current;
}
}
printf("total: tx %.1fKB, rx %.1fKB\n",
_write_count/1024.0, _read_count/1024.0);
} else
transfer(fd, default_tx, default_rx, sizeof(default_tx));
close(fd);