svn commit: r239626 - in head/sys: arm/at91 dev/spibus

[Warner Losh]

Author: imp
Date: Thu Aug 23 22:38:37 2012
New Revision: 239626
URL: http://svn.freebsd.org/changeset/base/239626

Log:
  Fetch the chip select in the bridge driver, like all the other spi
  bridges do.

Modified:
  head/sys/arm/at91/at91_spi.c
  head/sys/dev/spibus/spi.h
  head/sys/dev/spibus/spibus.c

Modified: head/sys/arm/at91/at91_spi.c
==============================================================================
--- head/sys/arm/at91/at91_spi.c        Thu Aug 23 22:23:56 2012        
(r239625)
+++ head/sys/arm/at91/at91_spi.c        Thu Aug 23 22:38:37 2012        
(r239626)
@@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$");
 #include <arm/at91/at91_pdcreg.h>
 
 #include <dev/spibus/spi.h>
+#include <dev/spibus/spibusvar.h>
 
 #include "spibus_if.h"
 
@@ -270,13 +271,16 @@ at91_spi_transfer(device_t dev, device_t
 {
        struct at91_spi_softc *sc;
        bus_addr_t addr;
-       int err, i, j, mode[4];
+       int err, i, j, mode[4], cs;
 
        KASSERT(cmd->tx_cmd_sz == cmd->rx_cmd_sz,
            ("%s: TX/RX command sizes should be equal", __func__));
        KASSERT(cmd->tx_data_sz == cmd->rx_data_sz,
            ("%s: TX/RX data sizes should be equal", __func__));
 
+       /* get the proper chip select */
+       spibus_get_cs(child, &cs);
+
        sc = device_get_softc(dev);
        i = 0;
 
@@ -291,9 +295,9 @@ at91_spi_transfer(device_t dev, device_t
         * PSCDEC = 0 has a range of 0..3 for chip select.  We
         * don't support PSCDEC = 1 which has a range of 0..15.
         */
-       if (cmd->cs < 0 || cmd->cs > 3) {
+       if (cs < 0 || cs > 3) {
                device_printf(dev,
-                   "Invalid chip select %d requested by %s\n", cmd->cs,
+                   "Invalid chip select %d requested by %s\n", cs,
                    device_get_nameunit(child));
                err = EINVAL;
                goto out;
@@ -304,7 +308,7 @@ at91_spi_transfer(device_t dev, device_t
         * The AT91RM9200 couldn't do CS high for CS 0.  Other chips can, but we
         * don't support that yet, or other spi modes.
         */
-       if (at91_is_rm92() && cmd->cs == 0 &&
+       if (at91_is_rm92() && cs == 0 &&
            (cmd->flags & SPI_CHIP_SELECT_HIGH) != 0) {
                device_printf(dev,
                    "Invalid chip select high requested by %s for cs 0.\n",
@@ -313,7 +317,7 @@ at91_spi_transfer(device_t dev, device_t
                goto out;
        }
 #endif
-       err = (RD4(sc, SPI_MR) & ~0x000f0000) | CS_TO_MR(cmd->cs);
+       err = (RD4(sc, SPI_MR) & ~0x000f0000) | CS_TO_MR(cs);
        WR4(sc, SPI_MR, err);
 
        /*

Modified: head/sys/dev/spibus/spi.h
==============================================================================
--- head/sys/dev/spibus/spi.h   Thu Aug 23 22:23:56 2012        (r239625)
+++ head/sys/dev/spibus/spi.h   Thu Aug 23 22:38:37 2012        (r239626)
@@ -1,7 +1,6 @@
 /* $FreeBSD$ */
 
 struct spi_command {
-       int     cs;
        void    *tx_cmd;
        uint32_t tx_cmd_sz;
        void    *rx_cmd;

Modified: head/sys/dev/spibus/spibus.c
==============================================================================
--- head/sys/dev/spibus/spibus.c        Thu Aug 23 22:23:56 2012        
(r239625)
+++ head/sys/dev/spibus/spibus.c        Thu Aug 23 22:38:37 2012        
(r239626)
@@ -158,9 +158,6 @@ spibus_hinted_child(device_t bus, const 
 static int
 spibus_transfer_impl(device_t dev, device_t child, struct spi_command *cmd)
 {
-       /* Maybe set flags too? spi mode? */
-       spibus_get_cs(dev, &cmd->cs);
-
        return (SPIBUS_TRANSFER(device_get_parent(dev), child, cmd));
 }
 
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