Merge remote-tracking branches 'spi/topic/rspi', 'spi/topic/sc18is602', 'spi/topic...

diff --git a/MAINTAINERS b/MAINTAINERS
index 01bff8e..9eaff63 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11124,6 +11124,7 @@ F:      Documentation/spi/
 F:     drivers/spi/
 F:     include/linux/spi/
 F:     include/uapi/linux/spi/
+F:     tools/spi/
 
 SPIDERNET NETWORK DRIVER for CELL
 M:     Ishizaki Kou <kou.ishizaki@toshiba.co.jp>

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index a49343b..b799547 100644 (file)
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -566,7 +566,7 @@ config SPI_SC18IS602
 config SPI_SH_MSIOF
        tristate "SuperH MSIOF SPI controller"
        depends on HAVE_CLK && HAS_DMA
-       depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
+       depends on ARCH_SHMOBILE || ARCH_RENESAS || COMPILE_TEST
        help
          SPI driver for SuperH and SH Mobile MSIOF blocks.
 

diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index 8188433..a816f07 100644 (file)
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -295,14 +295,24 @@ static int rspi_set_config_register(struct rspi_data *rspi, int access_size)
 static int rspi_rz_set_config_register(struct rspi_data *rspi, int access_size)
 {
        int spbr;
+       int div = 0;
+       unsigned long clksrc;
 
        /* Sets output mode, MOSI signal, and (optionally) loopback */
        rspi_write8(rspi, rspi->sppcr, RSPI_SPPCR);
 
+       clksrc = clk_get_rate(rspi->clk);
+       while (div < 3) {
+               if (rspi->max_speed_hz >= clksrc/4) /* 4=(CLK/2)/2 */
+                       break;
+               div++;
+               clksrc /= 2;
+       }
+
        /* Sets transfer bit rate */
-       spbr = DIV_ROUND_UP(clk_get_rate(rspi->clk),
-                           2 * rspi->max_speed_hz) - 1;
+       spbr = DIV_ROUND_UP(clksrc, 2 * rspi->max_speed_hz) - 1;
        rspi_write8(rspi, clamp(spbr, 0, 255), RSPI_SPBR);
+       rspi->spcmd |= div << 2;
 
        /* Disable dummy transmission, set byte access */
        rspi_write8(rspi, SPDCR_SPLBYTE, RSPI_SPDCR);

diff --git a/drivers/spi/spi-sc18is602.c b/drivers/spi/spi-sc18is602.c
index 36af4d4..f63714f 100644 (file)
--- a/drivers/spi/spi-sc18is602.c
+++ b/drivers/spi/spi-sc18is602.c
@@ -23,6 +23,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/platform_data/sc18is602.h>
+#include <linux/gpio/consumer.h>
 
 enum chips { sc18is602, sc18is602b, sc18is603 };
 
@@ -50,6 +51,8 @@ struct sc18is602 {
        u8                      buffer[SC18IS602_BUFSIZ + 1];
        int                     tlen;   /* Data queued for tx in buffer */
        int                     rindex; /* Receive data index in buffer */
+
+       struct gpio_desc        *reset;
 };
 
 static int sc18is602_wait_ready(struct sc18is602 *hw, int len)
@@ -257,6 +260,12 @@ static int sc18is602_probe(struct i2c_client *client,
        hw = spi_master_get_devdata(master);
        i2c_set_clientdata(client, hw);
 
+       /* assert reset and then release */
+       hw->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+       if (IS_ERR(hw->reset))
+               return PTR_ERR(hw->reset);
+       gpiod_set_value_cansleep(hw->reset, 0);
+
        hw->master = master;
        hw->client = client;
        hw->dev = dev;

diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c
index a56eca0..e54b596 100644 (file)
--- a/drivers/spi/spi-st-ssc4.c
+++ b/drivers/spi/spi-st-ssc4.c
@@ -175,10 +175,7 @@ static int spi_st_transfer_one(struct spi_master *master,
 
 static void spi_st_cleanup(struct spi_device *spi)
 {
-       int cs = spi->cs_gpio;
-
-       if (gpio_is_valid(cs))
-               devm_gpio_free(&spi->dev, cs);
+       gpio_free(spi->cs_gpio);
 }
 
 /* the spi->mode bits understood by this driver: */
@@ -201,14 +198,15 @@ static int spi_st_setup(struct spi_device *spi)
                return -EINVAL;
        }
 
-       if (devm_gpio_request(&spi->dev, cs, dev_name(&spi->dev))) {
+       ret = gpio_request(cs, dev_name(&spi->dev));
+       if (ret) {
                dev_err(&spi->dev, "could not request gpio:%d\n", cs);
-               return -EINVAL;
+               return ret;
        }
 
        ret = gpio_direction_output(cs, spi->mode & SPI_CS_HIGH);
        if (ret)
-               return ret;
+               goto out_free_gpio;
 
        spi_st_clk = clk_get_rate(spi_st->clk);
 
@@ -217,7 +215,8 @@ static int spi_st_setup(struct spi_device *spi)
        if (sscbrg < 0x07 || sscbrg > BIT(16)) {
                dev_err(&spi->dev,
                        "baudrate %d outside valid range %d\n", sscbrg, hz);
-               return -EINVAL;
+               ret = -EINVAL;
+               goto out_free_gpio;
        }
 
        spi_st->baud = spi_st_clk / (2 * sscbrg);
@@ -266,6 +265,10 @@ static int spi_st_setup(struct spi_device *spi)
         readl_relaxed(spi_st->base + SSC_RBUF);
 
         return 0;
+
+out_free_gpio:
+       gpio_free(cs);
+       return ret;
 }
 
 /* Interrupt fired when TX shift register becomes empty */

diff --git a/tools/spi/spidev_test.c b/tools/spi/spidev_test.c
index f3825b6..f046b77 100644 (file)
--- a/tools/spi/spidev_test.c
+++ b/tools/spi/spidev_test.c
@@ -19,6 +19,7 @@
 #include <getopt.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
+#include <linux/ioctl.h>
 #include <sys/stat.h>
 #include <linux/types.h>
 #include <linux/spi/spidev.h>