Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x...

[cascardo/linux.git] / drivers / spi / spi-octeon.c

diff --git a/drivers/spi/spi-octeon.c b/drivers/spi/spi-octeon.c
index 67249a4..c5e2f71 100644 (file)
--- a/drivers/spi/spi-octeon.c
+++ b/drivers/spi/spi-octeon.c
@@ -11,7 +11,6 @@
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/delay.h>
-#include <linux/init.h>
 #include <linux/io.h>
 #include <linux/of.h>
 
@@ -33,13 +32,6 @@ struct octeon_spi {
        u64 cs_enax;
 };
 
-struct octeon_spi_setup {
-       u32 max_speed_hz;
-       u8 chip_select;
-       u8 mode;
-       u8 bits_per_word;
-};
-
 static void octeon_spi_wait_ready(struct octeon_spi *p)
 {
        union cvmx_mpi_sts mpi_sts;
@@ -57,6 +49,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
                                  struct spi_transfer *xfer,
                                  bool last_xfer)
 {
+       struct spi_device *spi = msg->spi;
        union cvmx_mpi_cfg mpi_cfg;
        union cvmx_mpi_tx mpi_tx;
        unsigned int clkdiv;
@@ -68,18 +61,11 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
        int len;
        int i;
 
-       struct octeon_spi_setup *msg_setup = spi_get_ctldata(msg->spi);
-
-       speed_hz = msg_setup->max_speed_hz;
-       mode = msg_setup->mode;
+       mode = spi->mode;
        cpha = mode & SPI_CPHA;
        cpol = mode & SPI_CPOL;
 
-       if (xfer->speed_hz)
-               speed_hz = xfer->speed_hz;
-
-       if (speed_hz > OCTEON_SPI_MAX_CLOCK_HZ)
-               speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
+       speed_hz = xfer->speed_hz ? : spi->max_speed_hz;
 
        clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);
 
@@ -93,8 +79,8 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
        mpi_cfg.s.cslate = cpha ? 1 : 0;
        mpi_cfg.s.enable = 1;
 
-       if (msg_setup->chip_select < 4)
-               p->cs_enax |= 1ull << (12 + msg_setup->chip_select);
+       if (spi->chip_select < 4)
+               p->cs_enax |= 1ull << (12 + spi->chip_select);
        mpi_cfg.u64 |= p->cs_enax;
 
        if (mpi_cfg.u64 != p->last_cfg) {
@@ -114,7 +100,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
                        cvmx_write_csr(p->register_base + OCTEON_SPI_DAT0 + (8 * i), d);
                }
                mpi_tx.u64 = 0;
-               mpi_tx.s.csid = msg_setup->chip_select;
+               mpi_tx.s.csid = spi->chip_select;
                mpi_tx.s.leavecs = 1;
                mpi_tx.s.txnum = tx_buf ? OCTEON_SPI_MAX_BYTES : 0;
                mpi_tx.s.totnum = OCTEON_SPI_MAX_BYTES;
@@ -139,7 +125,7 @@ static int octeon_spi_do_transfer(struct octeon_spi *p,
        }
 
        mpi_tx.u64 = 0;
-       mpi_tx.s.csid = msg_setup->chip_select;
+       mpi_tx.s.csid = spi->chip_select;
        if (last_xfer)
                mpi_tx.s.leavecs = xfer->cs_change;
        else
@@ -169,17 +155,9 @@ static int octeon_spi_transfer_one_message(struct spi_master *master,
        int status = 0;
        struct spi_transfer *xfer;
 
-       /*
-        * We better have set the configuration via a call to .setup
-        * before we get here.
-        */
-       if (spi_get_ctldata(msg->spi) == NULL) {
-               status = -EINVAL;
-               goto err;
-       }
-
        list_for_each_entry(xfer, &msg->transfers, transfer_list) {
-               bool last_xfer = &xfer->transfer_list == msg->transfers.prev;
+               bool last_xfer = list_is_last(&xfer->transfer_list,
+                                             &msg->transfers);
                int r = octeon_spi_do_transfer(p, msg, xfer, last_xfer);
                if (r < 0) {
                        status = r;
@@ -194,41 +172,6 @@ err:
        return status;
 }
 
-static struct octeon_spi_setup *octeon_spi_new_setup(struct spi_device *spi)
-{
-       struct octeon_spi_setup *setup = kzalloc(sizeof(*setup), GFP_KERNEL);
-       if (!setup)
-               return NULL;
-
-       setup->max_speed_hz = spi->max_speed_hz;
-       setup->chip_select = spi->chip_select;
-       setup->mode = spi->mode;
-       setup->bits_per_word = spi->bits_per_word;
-       return setup;
-}
-
-static int octeon_spi_setup(struct spi_device *spi)
-{
-       struct octeon_spi_setup *new_setup;
-       struct octeon_spi_setup *old_setup = spi_get_ctldata(spi);
-
-       new_setup = octeon_spi_new_setup(spi);
-       if (!new_setup)
-               return -ENOMEM;
-
-       spi_set_ctldata(spi, new_setup);
-       kfree(old_setup);
-
-       return 0;
-}
-
-static void octeon_spi_cleanup(struct spi_device *spi)
-{
-       struct octeon_spi_setup *old_setup = spi_get_ctldata(spi);
-       spi_set_ctldata(spi, NULL);
-       kfree(old_setup);
-}
-
 static int octeon_spi_probe(struct platform_device *pdev)
 {
        struct resource *res_mem;
@@ -257,8 +200,6 @@ static int octeon_spi_probe(struct platform_device *pdev)
        p->register_base = (u64)devm_ioremap(&pdev->dev, res_mem->start,
                                             resource_size(res_mem));
 
-       /* Dynamic bus numbering */
-       master->bus_num = -1;
        master->num_chipselect = 4;
        master->mode_bits = SPI_CPHA |
                            SPI_CPOL |
@@ -266,10 +207,9 @@ static int octeon_spi_probe(struct platform_device *pdev)
                            SPI_LSB_FIRST |
                            SPI_3WIRE;
 
-       master->setup = octeon_spi_setup;
-       master->cleanup = octeon_spi_cleanup;
        master->transfer_one_message = octeon_spi_transfer_one_message;
        master->bits_per_word_mask = SPI_BPW_MASK(8);
+       master->max_speed_hz = OCTEON_SPI_MAX_CLOCK_HZ;
 
        master->dev.of_node = pdev->dev.of_node;
        err = devm_spi_register_master(&pdev->dev, master);