ARM: 5850/1: [AT91] AT572D940HF processor support

Add support for the Atmel AT572D940HF processor (DIOPSIS range).
This processor integrates an ARM926 core, a DSP and the SoC
peripherals usually found on an AT91 processor (USART, SSC, SPI, TWI,
CAN, etc)

Signed-off-by: Antonio R. Costa <costa.antonior@gmail.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 377 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/at572d940hf.c b/arch/arm/mach-at91/at572d940hf.c
new file mode 100644
index 00000000000..a6b9c68c003
--- /dev/null
+++ b/arch/arm/mach-at91/at572d940hf.c
@@ -0,0 +1,377 @@
+/*
+ * arch/arm/mach-at91/at572d940hf.c
+ *
+ * Antonio R. Costa <costa.antonior@gmail.com>
+ * Copyright (C) 2008 Atmel
+ *
+ * Copyright (C) 2005 SAN People
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <mach/at572d940hf.h>
+#include <mach/at91_pmc.h>
+#include <mach/at91_rstc.h>
+
+#include "generic.h"
+#include "clock.h"
+
+static struct map_desc at572d940hf_io_desc[] __initdata = {
+	{
+		.virtual	= AT91_VA_BASE_SYS,
+		.pfn		= __phys_to_pfn(AT91_BASE_SYS),
+		.length		= SZ_16K,
+		.type		= MT_DEVICE,
+	}, {
+		.virtual	= AT91_IO_VIRT_BASE - AT572D940HF_SRAM_SIZE,
+		.pfn		= __phys_to_pfn(AT572D940HF_SRAM_BASE),
+		.length		= AT572D940HF_SRAM_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+/* --------------------------------------------------------------------
+ *  Clocks
+ * -------------------------------------------------------------------- */
+
+/*
+ * The peripheral clocks.
+ */
+static struct clk pioA_clk = {
+	.name		= "pioA_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_PIOA,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioB_clk = {
+	.name		= "pioB_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_PIOB,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk pioC_clk = {
+	.name		= "pioC_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_PIOC,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk macb_clk = {
+	.name		= "macb_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_EMAC,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart0_clk = {
+	.name		= "usart0_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_US0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart1_clk = {
+	.name		= "usart1_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_US1,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk usart2_clk = {
+	.name		= "usart2_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_US2,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk mmc_clk = {
+	.name		= "mci_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_MCI,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk udc_clk = {
+	.name		= "udc_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_UDP,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk twi0_clk = {
+	.name		= "twi0_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_TWI0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk spi0_clk = {
+	.name		= "spi0_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_SPI0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk spi1_clk = {
+	.name		= "spi1_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_SPI1,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk ssc0_clk = {
+	.name		= "ssc0_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_SSC0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk ssc1_clk = {
+	.name		= "ssc1_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_SSC1,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk ssc2_clk = {
+	.name		= "ssc2_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_SSC2,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk tc0_clk = {
+	.name		= "tc0_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_TC0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk tc1_clk = {
+	.name		= "tc1_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_TC1,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk tc2_clk = {
+	.name		= "tc2_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_TC2,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk ohci_clk = {
+	.name		= "ohci_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_UHP,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk ssc3_clk = {
+	.name		= "ssc3_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_SSC3,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk twi1_clk = {
+	.name		= "twi1_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_TWI1,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk can0_clk = {
+	.name		= "can0_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_CAN0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk can1_clk = {
+	.name		= "can1_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_CAN1,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+static struct clk mAgicV_clk = {
+	.name		= "mAgicV_clk",
+	.pmc_mask	= 1 << AT572D940HF_ID_MSIRQ0,
+	.type		= CLK_TYPE_PERIPHERAL,
+};
+
+
+static struct clk *periph_clocks[] __initdata = {
+	&pioA_clk,
+	&pioB_clk,
+	&pioC_clk,
+	&macb_clk,
+	&usart0_clk,
+	&usart1_clk,
+	&usart2_clk,
+	&mmc_clk,
+	&udc_clk,
+	&twi0_clk,
+	&spi0_clk,
+	&spi1_clk,
+	&ssc0_clk,
+	&ssc1_clk,
+	&ssc2_clk,
+	&tc0_clk,
+	&tc1_clk,
+	&tc2_clk,
+	&ohci_clk,
+	&ssc3_clk,
+	&twi1_clk,
+	&can0_clk,
+	&can1_clk,
+	&mAgicV_clk,
+	/* irq0 .. irq2 */
+};
+
+/*
+ * The five programmable clocks.
+ * You must configure pin multiplexing to bring these signals out.
+ */
+static struct clk pck0 = {
+	.name		= "pck0",
+	.pmc_mask	= AT91_PMC_PCK0,
+	.type		= CLK_TYPE_PROGRAMMABLE,
+	.id		= 0,
+};
+static struct clk pck1 = {
+	.name		= "pck1",
+	.pmc_mask	= AT91_PMC_PCK1,
+	.type		= CLK_TYPE_PROGRAMMABLE,
+	.id		= 1,
+};
+static struct clk pck2 = {
+	.name		= "pck2",
+	.pmc_mask	= AT91_PMC_PCK2,
+	.type		= CLK_TYPE_PROGRAMMABLE,
+	.id		= 2,
+};
+static struct clk pck3 = {
+	.name		= "pck3",
+	.pmc_mask	= AT91_PMC_PCK3,
+	.type		= CLK_TYPE_PROGRAMMABLE,
+	.id		= 3,
+};
+
+static struct clk mAgicV_mem_clk = {
+	.name		= "mAgicV_mem_clk",
+	.pmc_mask	= AT91_PMC_PCK4,
+	.type		= CLK_TYPE_PROGRAMMABLE,
+	.id		= 4,
+};
+
+/* HClocks */
+static struct clk hck0 = {
+	.name		= "hck0",
+	.pmc_mask	= AT91_PMC_HCK0,
+	.type		= CLK_TYPE_SYSTEM,
+	.id		= 0,
+};
+static struct clk hck1 = {
+	.name		= "hck1",
+	.pmc_mask	= AT91_PMC_HCK1,
+	.type		= CLK_TYPE_SYSTEM,
+	.id		= 1,
+};
+
+static void __init at572d940hf_register_clocks(void)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
+		clk_register(periph_clocks[i]);
+
+	clk_register(&pck0);
+	clk_register(&pck1);
+	clk_register(&pck2);
+	clk_register(&pck3);
+	clk_register(&mAgicV_mem_clk);
+
+	clk_register(&hck0);
+	clk_register(&hck1);
+}
+
+/* --------------------------------------------------------------------
+ *  GPIO
+ * -------------------------------------------------------------------- */
+
+static struct at91_gpio_bank at572d940hf_gpio[] = {
+	{
+		.id		= AT572D940HF_ID_PIOA,
+		.offset		= AT91_PIOA,
+		.clock		= &pioA_clk,
+	}, {
+		.id		= AT572D940HF_ID_PIOB,
+		.offset		= AT91_PIOB,
+		.clock		= &pioB_clk,
+	}, {
+		.id		= AT572D940HF_ID_PIOC,
+		.offset		= AT91_PIOC,
+		.clock		= &pioC_clk,
+	}
+};
+
+static void at572d940hf_reset(void)
+{
+	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
+}
+
+
+/* --------------------------------------------------------------------
+ *  AT572D940HF processor initialization
+ * -------------------------------------------------------------------- */
+
+void __init at572d940hf_initialize(unsigned long main_clock)
+{
+	/* Map peripherals */
+	iotable_init(at572d940hf_io_desc, ARRAY_SIZE(at572d940hf_io_desc));
+
+	at91_arch_reset = at572d940hf_reset;
+	at91_extern_irq = (1 << AT572D940HF_ID_IRQ0) | (1 << AT572D940HF_ID_IRQ1)
+			| (1 << AT572D940HF_ID_IRQ2);
+
+	/* Init clock subsystem */
+	at91_clock_init(main_clock);
+
+	/* Register the processor-specific clocks */
+	at572d940hf_register_clocks();
+
+	/* Register GPIO subsystem */
+	at91_gpio_init(at572d940hf_gpio, 3);
+}
+
+/* --------------------------------------------------------------------
+ *  Interrupt initialization
+ * -------------------------------------------------------------------- */
+
+/*
+ * The default interrupt priority levels (0 = lowest, 7 = highest).
+ */
+static unsigned int at572d940hf_default_irq_priority[NR_AIC_IRQS] __initdata = {
+	7,	/* Advanced Interrupt Controller */
+	7,	/* System Peripherals */
+	0,	/* Parallel IO Controller A */
+	0,	/* Parallel IO Controller B */
+	0,	/* Parallel IO Controller C */
+	3,	/* Ethernet */
+	6,	/* USART 0 */
+	6,	/* USART 1 */
+	6,	/* USART 2 */
+	0,	/* Multimedia Card Interface */
+	4,	/* USB Device Port */
+	0,	/* Two-Wire Interface 0 */
+	6,	/* Serial Peripheral Interface 0 */
+	6,	/* Serial Peripheral Interface 1 */
+	5,	/* Serial Synchronous Controller 0 */
+	5,	/* Serial Synchronous Controller 1 */
+	5,	/* Serial Synchronous Controller 2 */
+	0,	/* Timer Counter 0 */
+	0,	/* Timer Counter 1 */
+	0,	/* Timer Counter 2 */
+	3,	/* USB Host port */
+	3,	/* Serial Synchronous Controller 3 */
+	0,	/* Two-Wire Interface 1 */
+	0,	/* CAN Controller 0 */
+	0,	/* CAN Controller 1 */
+	0,	/* mAgicV HALT line */
+	0,	/* mAgicV SIRQ0 line */
+	0,	/* mAgicV exception line */
+	0,	/* mAgicV end of DMA line */
+	0,	/* Advanced Interrupt Controller */
+	0,	/* Advanced Interrupt Controller */
+	0,	/* Advanced Interrupt Controller */
+};
+
+void __init at572d940hf_init_interrupts(unsigned int priority[NR_AIC_IRQS])
+{
+	if (!priority)
+		priority = at572d940hf_default_irq_priority;
+
+	/* Initialize the AIC interrupt controller */
+	at91_aic_init(priority);
+
+	/* Enable GPIO interrupts */
+	at91_gpio_irq_setup();
+}
+