MIPS: MSP71xx: Platform support for On-chip MSP ethernet devices.

Some of MSP family SoC's come with legacy 100Mbps mspeth while some comes
with newer Gigabit TSMAC.Following patch adds platform support for both
types of MAC's.
If TSMAC is not selected assume platform having legacy mspeth.  Add
gpio_macros as well which is required for resetting the PHY.

[Ralf: Killed all typedefs.]

Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2048/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 198 insertions, 1 deletions

diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index c437b8a8ab8c..bbd76082fa8c 100644
--- a/arch/mips/pmc-sierra/Kconfig
+++ b/arch/mips/pmc-sierra/Kconfig
@@ -24,6 +24,7 @@ config PMC_MSP7120_GW
         select IRQ_MSP_CIC
         select HW_HAS_PCI
         select MSP_HAS_USB
+        select MSP_ETH
 
 config PMC_MSP7120_FPGA
         bool "PMC-Sierra MSP7120 FPGA"
@@ -40,3 +41,12 @@ config HYPERTRANSPORT
 config MSP_HAS_USB
         boolean
         depends on PMC_MSP
+
+config MSP_ETH
+        boolean
+        select MSP_HAS_MAC
+        depends on PMC_MSP
+
+config MSP_HAS_MAC
+        boolean
+        depends on PMC_MSP
diff --git a/arch/mips/pmc-sierra/msp71xx/Makefile b/arch/mips/pmc-sierra/msp71xx/Makefile
index f26cab349c38..cefba7733b73 100644
--- a/arch/mips/pmc-sierra/msp71xx/Makefile
+++ b/arch/mips/pmc-sierra/msp71xx/Makefile
@@ -8,7 +8,7 @@ obj-$(CONFIG_PMC_MSP7120_GW) += msp_hwbutton.o
 obj-$(CONFIG_IRQ_MSP_SLP) += msp_irq_slp.o
 obj-$(CONFIG_IRQ_MSP_CIC) += msp_irq_cic.o msp_irq_per.o
 obj-$(CONFIG_PCI) += msp_pci.o
-obj-$(CONFIG_MSPETH) += msp_eth.o
+obj-$(CONFIG_MSP_HAS_MAC) += msp_eth.o
 obj-$(CONFIG_MSP_HAS_USB) += msp_usb.o
 obj-$(CONFIG_MIPS_MT_SMP) += msp_smp.o
 obj-$(CONFIG_MIPS_MT_SMTC) += msp_smtc.o
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_eth.c b/arch/mips/pmc-sierra/msp71xx/msp_eth.c
new file mode 100644
index 000000000000..c584df393de2
--- /dev/null
+++ b/arch/mips/pmc-sierra/msp71xx/msp_eth.c
@@ -0,0 +1,187 @@
+/*
+ * The setup file for ethernet related hardware on PMC-Sierra MSP processors.
+ *
+ * Copyright 2010 PMC-Sierra, Inc.
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <msp_regs.h>
+#include <msp_int.h>
+#include <msp_gpio_macros.h>
+
+
+#define MSP_ETHERNET_GPIO0      14
+#define MSP_ETHERNET_GPIO1      15
+#define MSP_ETHERNET_GPIO2      16
+
+#ifdef CONFIG_MSP_HAS_TSMAC
+#define MSP_TSMAC_SIZE  0x10020
+#define MSP_TSMAC_ID    "pmc_tsmac"
+
+static struct resource msp_tsmac0_resources[] = {
+        [0] = {
+                .start  = MSP_MAC0_BASE,
+                .end    = MSP_MAC0_BASE + MSP_TSMAC_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = MSP_INT_MAC0,
+                .end    = MSP_INT_MAC0,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct resource msp_tsmac1_resources[] = {
+        [0] = {
+                .start  = MSP_MAC1_BASE,
+                .end    = MSP_MAC1_BASE + MSP_TSMAC_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = MSP_INT_MAC1,
+                .end    = MSP_INT_MAC1,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+static struct resource msp_tsmac2_resources[] = {
+        [0] = {
+                .start  = MSP_MAC2_BASE,
+                .end    = MSP_MAC2_BASE + MSP_TSMAC_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = MSP_INT_SAR,
+                .end    = MSP_INT_SAR,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+
+static struct platform_device tsmac_device[] = {
+        [0] = {
+                .name   = MSP_TSMAC_ID,
+                .id     = 0,
+                .num_resources = ARRAY_SIZE(msp_tsmac0_resources),
+                .resource = msp_tsmac0_resources,
+        },
+        [1] = {
+                .name   = MSP_TSMAC_ID,
+                .id     = 1,
+                .num_resources = ARRAY_SIZE(msp_tsmac1_resources),
+                .resource = msp_tsmac1_resources,
+        },
+        [2] = {
+                .name   = MSP_TSMAC_ID,
+                .id     = 2,
+                .num_resources = ARRAY_SIZE(msp_tsmac2_resources),
+                .resource = msp_tsmac2_resources,
+        },
+};
+#define msp_eth_devs    tsmac_device
+
+#else
+/* If it is not TSMAC assume MSP_ETH (100Mbps) */
+#define MSP_ETH_ID      "pmc_mspeth"
+#define MSP_ETH_SIZE    0xE0
+static struct resource msp_eth0_resources[] = {
+        [0] = {
+                .start  = MSP_MAC0_BASE,
+                .end    = MSP_MAC0_BASE + MSP_ETH_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = MSP_INT_MAC0,
+                .end    = MSP_INT_MAC0,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct resource msp_eth1_resources[] = {
+        [0] = {
+                .start  = MSP_MAC1_BASE,
+                .end    = MSP_MAC1_BASE + MSP_ETH_SIZE - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = MSP_INT_MAC1,
+                .end    = MSP_INT_MAC1,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+
+
+static struct platform_device mspeth_device[] = {
+        [0] = {
+                .name   = MSP_ETH_ID,
+                .id     = 0,
+                .num_resources = ARRAY_SIZE(msp_eth0_resources),
+                .resource = msp_eth0_resources,
+        },
+        [1] = {
+                .name   = MSP_ETH_ID,
+                .id     = 1,
+                .num_resources = ARRAY_SIZE(msp_eth1_resources),
+                .resource = msp_eth1_resources,
+        },
+
+};
+#define msp_eth_devs    mspeth_device
+
+#endif
+int __init msp_eth_setup(void)
+{
+        int i, ret = 0;
+
+        /* Configure the GPIO and take the ethernet PHY out of reset */
+        msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO0);
+        msp_gpio_pin_hi(MSP_ETHERNET_GPIO0);
+
+#ifdef CONFIG_MSP_HAS_TSMAC
+        /* 3 phys on boards with TSMAC */
+        msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO1);
+        msp_gpio_pin_hi(MSP_ETHERNET_GPIO1);
+
+        msp_gpio_pin_mode(MSP_GPIO_OUTPUT, MSP_ETHERNET_GPIO2);
+        msp_gpio_pin_hi(MSP_ETHERNET_GPIO2);
+#endif
+        for (i = 0; i < ARRAY_SIZE(msp_eth_devs); i++) {
+                ret = platform_device_register(&msp_eth_devs[i]);
+                printk(KERN_INFO "device: %d, return value = %d\n", i, ret);
+                if (ret) {
+                        platform_device_unregister(&msp_eth_devs[i]);
+                        break;
+                }
+        }
+
+        if (ret)
+                printk(KERN_WARNING "Could not initialize "
+                                                "MSPETH device structures.\n");
+
+        return ret;
+}
+subsys_initcall(msp_eth_setup);