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authorIngo Molnar <mingo@elte.hu>2008-10-12 14:49:27 +0400
committerIngo Molnar <mingo@elte.hu>2008-10-12 14:49:27 +0400
commit1389ac4b976abdc0555280dfc1aa2c3abcc19641 (patch)
tree1ec51aa0b1e33201f6f4f3bebc657f9ec65f8539 /arch/mips/alchemy/pb1200
parent69e13ad56f9e2cd81c4f8bfd6267211c10c14c08 (diff)
parentfd048088306656824958e7783ffcee27e241b361 (diff)
downloadlinux-1389ac4b976abdc0555280dfc1aa2c3abcc19641.tar.xz
Merge branch 'linus' into x86/signal
Conflicts: arch/x86/kernel/signal_64.c
Diffstat (limited to 'arch/mips/alchemy/pb1200')
-rw-r--r--arch/mips/alchemy/pb1200/Makefile8
-rw-r--r--arch/mips/alchemy/pb1200/board_setup.c162
-rw-r--r--arch/mips/alchemy/pb1200/init.c58
-rw-r--r--arch/mips/alchemy/pb1200/irqmap.c160
-rw-r--r--arch/mips/alchemy/pb1200/platform.c85
5 files changed, 473 insertions, 0 deletions
diff --git a/arch/mips/alchemy/pb1200/Makefile b/arch/mips/alchemy/pb1200/Makefile
new file mode 100644
index 000000000000..d678adf7ce85
--- /dev/null
+++ b/arch/mips/alchemy/pb1200/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for the Alchemy Semiconductor Pb1200/DBAu1200 boards.
+#
+
+lib-y := init.o board_setup.o irqmap.o
+obj-y += platform.o
+
+EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/alchemy/pb1200/board_setup.c b/arch/mips/alchemy/pb1200/board_setup.c
new file mode 100644
index 000000000000..6cb2115059ad
--- /dev/null
+++ b/arch/mips/alchemy/pb1200/board_setup.c
@@ -0,0 +1,162 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Alchemy Pb1200/Db1200 board setup.
+ *
+ * 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/sched.h>
+
+#include <prom.h>
+#include <au1xxx.h>
+
+extern void _board_init_irq(void);
+extern void (*board_init_irq)(void);
+
+void board_reset(void)
+{
+ bcsr->resets = 0;
+ bcsr->system = 0;
+}
+
+void __init board_setup(void)
+{
+ char *argptr = NULL;
+
+#if 0
+ {
+ u32 pin_func;
+
+ /*
+ * Enable PSC1 SYNC for AC97. Normaly done in audio driver,
+ * but it is board specific code, so put it here.
+ */
+ pin_func = au_readl(SYS_PINFUNC);
+ au_sync();
+ pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
+ au_writel(pin_func, SYS_PINFUNC);
+
+ au_writel(0, (u32)bcsr | 0x10); /* turn off PCMCIA power */
+ au_sync();
+ }
+#endif
+
+#if defined(CONFIG_I2C_AU1550)
+ {
+ u32 freq0, clksrc;
+ u32 pin_func;
+
+ /* Select SMBus in CPLD */
+ bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
+
+ pin_func = au_readl(SYS_PINFUNC);
+ au_sync();
+ pin_func &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B);
+ /* Set GPIOs correctly */
+ pin_func |= 2 << 17;
+ au_writel(pin_func, SYS_PINFUNC);
+ au_sync();
+
+ /* The I2C driver depends on 50 MHz clock */
+ freq0 = au_readl(SYS_FREQCTRL0);
+ au_sync();
+ freq0 &= ~(SYS_FC_FRDIV1_MASK | SYS_FC_FS1 | SYS_FC_FE1);
+ freq0 |= 3 << SYS_FC_FRDIV1_BIT;
+ /* 396 MHz / (3 + 1) * 2 == 49.5 MHz */
+ au_writel(freq0, SYS_FREQCTRL0);
+ au_sync();
+ freq0 |= SYS_FC_FE1;
+ au_writel(freq0, SYS_FREQCTRL0);
+ au_sync();
+
+ clksrc = au_readl(SYS_CLKSRC);
+ au_sync();
+ clksrc &= ~(SYS_CS_CE0 | SYS_CS_DE0 | SYS_CS_ME0_MASK);
+ /* Bit 22 is EXTCLK0 for PSC0 */
+ clksrc |= SYS_CS_MUX_FQ1 << SYS_CS_ME0_BIT;
+ au_writel(clksrc, SYS_CLKSRC);
+ au_sync();
+ }
+#endif
+
+#ifdef CONFIG_FB_AU1200
+ argptr = prom_getcmdline();
+#ifdef CONFIG_MIPS_PB1200
+ strcat(argptr, " video=au1200fb:panel:bs");
+#endif
+#ifdef CONFIG_MIPS_DB1200
+ strcat(argptr, " video=au1200fb:panel:bs");
+#endif
+#endif
+
+ /*
+ * The Pb1200 development board uses external MUX for PSC0 to
+ * support SMB/SPI. bcsr->resets bit 12: 0=SMB 1=SPI
+ */
+#ifdef CONFIG_I2C_AU1550
+ bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
+#endif
+ au_sync();
+
+#ifdef CONFIG_MIPS_PB1200
+ printk(KERN_INFO "AMD Alchemy Pb1200 Board\n");
+#endif
+#ifdef CONFIG_MIPS_DB1200
+ printk(KERN_INFO "AMD Alchemy Db1200 Board\n");
+#endif
+
+ /* Setup Pb1200 External Interrupt Controller */
+ board_init_irq = _board_init_irq;
+}
+
+int board_au1200fb_panel(void)
+{
+ BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+ int p;
+
+ p = bcsr->switches;
+ p >>= 8;
+ p &= 0x0F;
+ return p;
+}
+
+int board_au1200fb_panel_init(void)
+{
+ /* Apply power */
+ BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+
+ bcsr->board |= BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD | BCSR_BOARD_LCDBL;
+ /* printk(KERN_DEBUG "board_au1200fb_panel_init()\n"); */
+ return 0;
+}
+
+int board_au1200fb_panel_shutdown(void)
+{
+ /* Remove power */
+ BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
+
+ bcsr->board &= ~(BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
+ BCSR_BOARD_LCDBL);
+ /* printk(KERN_DEBUG "board_au1200fb_panel_shutdown()\n"); */
+ return 0;
+}
diff --git a/arch/mips/alchemy/pb1200/init.c b/arch/mips/alchemy/pb1200/init.c
new file mode 100644
index 000000000000..e9b2a0fd48ae
--- /dev/null
+++ b/arch/mips/alchemy/pb1200/init.c
@@ -0,0 +1,58 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ * PB1200 board setup
+ *
+ * Copyright 2001, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <source@mvista.com>
+ *
+ * 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 <asm/bootinfo.h>
+
+#include <prom.h>
+
+const char *get_system_type(void)
+{
+ return "Alchemy Pb1200";
+}
+
+void __init prom_init(void)
+{
+ unsigned char *memsize_str;
+ unsigned long memsize;
+
+ prom_argc = (int)fw_arg0;
+ prom_argv = (char **)fw_arg1;
+ prom_envp = (char **)fw_arg2;
+
+ prom_init_cmdline();
+ memsize_str = prom_getenv("memsize");
+ if (!memsize_str)
+ memsize = 0x08000000;
+ else
+ strict_strtol(memsize_str, 0, &memsize);
+ add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
diff --git a/arch/mips/alchemy/pb1200/irqmap.c b/arch/mips/alchemy/pb1200/irqmap.c
new file mode 100644
index 000000000000..2a505ad8715b
--- /dev/null
+++ b/arch/mips/alchemy/pb1200/irqmap.c
@@ -0,0 +1,160 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Au1xxx irq map table
+ *
+ * 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/interrupt.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+#ifdef CONFIG_MIPS_PB1200
+#include <asm/mach-pb1x00/pb1200.h>
+#endif
+
+#ifdef CONFIG_MIPS_DB1200
+#include <asm/mach-db1x00/db1200.h>
+#define PB1200_INT_BEGIN DB1200_INT_BEGIN
+#define PB1200_INT_END DB1200_INT_END
+#endif
+
+struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
+ /* This is external interrupt cascade */
+ { AU1000_GPIO_7, INTC_INT_LOW_LEVEL, 0 },
+};
+
+int __initdata au1xxx_nr_irqs = ARRAY_SIZE(au1xxx_irq_map);
+
+/*
+ * Support for External interrupts on the Pb1200 Development platform.
+ */
+static volatile int pb1200_cascade_en;
+
+irqreturn_t pb1200_cascade_handler(int irq, void *dev_id)
+{
+ unsigned short bisr = bcsr->int_status;
+ int extirq_nr = 0;
+
+ /* Clear all the edge interrupts. This has no effect on level. */
+ bcsr->int_status = bisr;
+ for ( ; bisr; bisr &= bisr - 1) {
+ extirq_nr = PB1200_INT_BEGIN + __ffs(bisr);
+ /* Ack and dispatch IRQ */
+ do_IRQ(extirq_nr);
+ }
+
+ return IRQ_RETVAL(1);
+}
+
+inline void pb1200_enable_irq(unsigned int irq_nr)
+{
+ bcsr->intset_mask = 1 << (irq_nr - PB1200_INT_BEGIN);
+ bcsr->intset = 1 << (irq_nr - PB1200_INT_BEGIN);
+}
+
+inline void pb1200_disable_irq(unsigned int irq_nr)
+{
+ bcsr->intclr_mask = 1 << (irq_nr - PB1200_INT_BEGIN);
+ bcsr->intclr = 1 << (irq_nr - PB1200_INT_BEGIN);
+}
+
+static unsigned int pb1200_setup_cascade(void)
+{
+ return request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
+ 0, "Pb1200 Cascade", &pb1200_cascade_handler);
+}
+
+static unsigned int pb1200_startup_irq(unsigned int irq)
+{
+ if (++pb1200_cascade_en == 1) {
+ int res;
+
+ res = pb1200_setup_cascade();
+ if (res)
+ return res;
+ }
+
+ pb1200_enable_irq(irq);
+
+ return 0;
+}
+
+static void pb1200_shutdown_irq(unsigned int irq)
+{
+ pb1200_disable_irq(irq);
+ if (--pb1200_cascade_en == 0)
+ free_irq(AU1000_GPIO_7, &pb1200_cascade_handler);
+}
+
+static struct irq_chip external_irq_type = {
+#ifdef CONFIG_MIPS_PB1200
+ .name = "Pb1200 Ext",
+#endif
+#ifdef CONFIG_MIPS_DB1200
+ .name = "Db1200 Ext",
+#endif
+ .startup = pb1200_startup_irq,
+ .shutdown = pb1200_shutdown_irq,
+ .ack = pb1200_disable_irq,
+ .mask = pb1200_disable_irq,
+ .mask_ack = pb1200_disable_irq,
+ .unmask = pb1200_enable_irq,
+};
+
+void _board_init_irq(void)
+{
+ unsigned int irq;
+
+#ifdef CONFIG_MIPS_PB1200
+ /* We have a problem with CPLD rev 3. */
+ if (((bcsr->whoami & BCSR_WHOAMI_CPLD) >> 4) <= 3) {
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "Pb1200 must be at CPLD rev 4. Please have Pb1200\n");
+ printk(KERN_ERR "updated to latest revision. This software will\n");
+ printk(KERN_ERR "not work on anything less than CPLD rev 4.\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ printk(KERN_ERR "WARNING!!!\n");
+ panic("Game over. Your score is 0.");
+ }
+#endif
+
+ for (irq = PB1200_INT_BEGIN; irq <= PB1200_INT_END; irq++) {
+ set_irq_chip_and_handler(irq, &external_irq_type,
+ handle_level_irq);
+ pb1200_disable_irq(irq);
+ }
+
+ /*
+ * GPIO_7 can not be hooked here, so it is hooked upon first
+ * request of any source attached to the cascade.
+ */
+}
diff --git a/arch/mips/alchemy/pb1200/platform.c b/arch/mips/alchemy/pb1200/platform.c
new file mode 100644
index 000000000000..f8fb0aeac571
--- /dev/null
+++ b/arch/mips/alchemy/pb1200/platform.c
@@ -0,0 +1,85 @@
+/*
+ * Pb1200/DBAu1200 board platform device registration
+ *
+ * Copyright (C) 2008 MontaVista Software Inc. <source@mvista.com>
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-au1x00/au1xxx.h>
+
+static struct resource ide_resources[] = {
+ [0] = {
+ .start = IDE_PHYS_ADDR,
+ .end = IDE_PHYS_ADDR + IDE_PHYS_LEN - 1,
+ .flags = IORESOURCE_MEM
+ },
+ [1] = {
+ .start = IDE_INT,
+ .end = IDE_INT,
+ .flags = IORESOURCE_IRQ
+ }
+};
+
+static u64 ide_dmamask = DMA_32BIT_MASK;
+
+static struct platform_device ide_device = {
+ .name = "au1200-ide",
+ .id = 0,
+ .dev = {
+ .dma_mask = &ide_dmamask,
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ },
+ .num_resources = ARRAY_SIZE(ide_resources),
+ .resource = ide_resources
+};
+
+static struct resource smc91c111_resources[] = {
+ [0] = {
+ .name = "smc91x-regs",
+ .start = SMC91C111_PHYS_ADDR,
+ .end = SMC91C111_PHYS_ADDR + 0xf,
+ .flags = IORESOURCE_MEM
+ },
+ [1] = {
+ .start = SMC91C111_INT,
+ .end = SMC91C111_INT,
+ .flags = IORESOURCE_IRQ
+ },
+};
+
+static struct platform_device smc91c111_device = {
+ .name = "smc91x",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(smc91c111_resources),
+ .resource = smc91c111_resources
+};
+
+static struct platform_device *board_platform_devices[] __initdata = {
+ &ide_device,
+ &smc91c111_device
+};
+
+static int __init board_register_devices(void)
+{
+ return platform_add_devices(board_platform_devices,
+ ARRAY_SIZE(board_platform_devices));
+}
+
+arch_initcall(board_register_devices);