Merge tag 'hwmon-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...

[sfrench/cifs-2.6.git] / drivers / spi / spi-dw.c

diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 2e822a56576acfa04afaf3c51064cdcd7d7d82c5..ac81025f86ab9add1ecfb01c8708b8d071003195 100644 (file)
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -20,7 +20,6 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/spi/spi.h>
-#include <linux/gpio.h>
 
 #include "spi-dw.h"
 
@@ -54,41 +53,41 @@ static ssize_t dw_spi_show_regs(struct file *file, char __user *user_buf,
        if (!buf)
                return 0;
 
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "%s registers:\n", dev_name(&dws->master->dev));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "=================================\n");
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "CTRL0: \t\t0x%08x\n", dw_readl(dws, DW_SPI_CTRL0));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "CTRL1: \t\t0x%08x\n", dw_readl(dws, DW_SPI_CTRL1));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "SSIENR: \t0x%08x\n", dw_readl(dws, DW_SPI_SSIENR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "SER: \t\t0x%08x\n", dw_readl(dws, DW_SPI_SER));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "BAUDR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_BAUDR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "TXFTLR: \t0x%08x\n", dw_readl(dws, DW_SPI_TXFLTR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "RXFTLR: \t0x%08x\n", dw_readl(dws, DW_SPI_RXFLTR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "TXFLR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_TXFLR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "RXFLR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_RXFLR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "SR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_SR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "IMR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_IMR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "ISR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_ISR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "DMACR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_DMACR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "DMATDLR: \t0x%08x\n", dw_readl(dws, DW_SPI_DMATDLR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "DMARDLR: \t0x%08x\n", dw_readl(dws, DW_SPI_DMARDLR));
-       len += snprintf(buf + len, SPI_REGS_BUFSIZE - len,
+       len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len,
                        "=================================\n");
 
        ret = simple_read_from_buffer(user_buf, count, ppos, buf, len);
@@ -138,11 +137,10 @@ void dw_spi_set_cs(struct spi_device *spi, bool enable)
        struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
        struct chip_data *chip = spi_get_ctldata(spi);
 
-       /* Chip select logic is inverted from spi_set_cs() */
        if (chip && chip->cs_control)
-               chip->cs_control(!enable);
+               chip->cs_control(enable);
 
-       if (!enable)
+       if (enable)
                dw_writel(dws, DW_SPI_SER, BIT(spi->chip_select));
        else if (dws->cs_override)
                dw_writel(dws, DW_SPI_SER, 0);
@@ -317,7 +315,8 @@ static int dw_spi_transfer_one(struct spi_controller *master,
        /* Default SPI mode is SCPOL = 0, SCPH = 0 */
        cr0 = (transfer->bits_per_word - 1)
                | (chip->type << SPI_FRF_OFFSET)
-               | (spi->mode << SPI_MODE_OFFSET)
+               | ((((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET) |
+                       (((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET))
                | (chip->tmode << SPI_TMOD_OFFSET);
 
        /*
@@ -397,7 +396,6 @@ static int dw_spi_setup(struct spi_device *spi)
 {
        struct dw_spi_chip *chip_info = NULL;
        struct chip_data *chip;
-       int ret;
 
        /* Only alloc on first setup */
        chip = spi_get_ctldata(spi);
@@ -425,13 +423,6 @@ static int dw_spi_setup(struct spi_device *spi)
 
        chip->tmode = SPI_TMOD_TR;
 
-       if (gpio_is_valid(spi->cs_gpio)) {
-               ret = gpio_direction_output(spi->cs_gpio,
-                               !(spi->mode & SPI_CS_HIGH));
-               if (ret)
-                       return ret;
-       }
-
        return 0;
 }
 
@@ -496,6 +487,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
                goto err_free_master;
        }
 
+       master->use_gpio_descriptors = true;
        master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP;
        master->bits_per_word_mask =  SPI_BPW_RANGE_MASK(4, 16);
        master->bus_num = dws->bus_num;