[PATCH] avr32 architecture
This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.
AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density. The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.
The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available from
http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf
The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture. It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit. It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.
Full data sheet is available from
http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf
while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available from
http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf
Information about the AT32STK1000 development board can be found at
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918
including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.
Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.
This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.
[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/avr32/mach-at32ap/at32ap7000.c b/arch/avr32/mach-at32ap/at32ap7000.c
new file mode 100644
index 0000000..e8c6893
--- /dev/null
+++ b/arch/avr32/mach-at32ap/at32ap7000.c
@@ -0,0 +1,866 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/io.h>
+
+#include <asm/arch/board.h>
+#include <asm/arch/portmux.h>
+#include <asm/arch/sm.h>
+
+#include "clock.h"
+#include "pio.h"
+#include "sm.h"
+
+#define PBMEM(base) \
+ { \
+ .start = base, \
+ .end = base + 0x3ff, \
+ .flags = IORESOURCE_MEM, \
+ }
+#define IRQ(num) \
+ { \
+ .start = num, \
+ .end = num, \
+ .flags = IORESOURCE_IRQ, \
+ }
+#define NAMED_IRQ(num, _name) \
+ { \
+ .start = num, \
+ .end = num, \
+ .name = _name, \
+ .flags = IORESOURCE_IRQ, \
+ }
+
+#define DEFINE_DEV(_name, _id) \
+static struct platform_device _name##_id##_device = { \
+ .name = #_name, \
+ .id = _id, \
+ .resource = _name##_id##_resource, \
+ .num_resources = ARRAY_SIZE(_name##_id##_resource), \
+}
+#define DEFINE_DEV_DATA(_name, _id) \
+static struct platform_device _name##_id##_device = { \
+ .name = #_name, \
+ .id = _id, \
+ .dev = { \
+ .platform_data = &_name##_id##_data, \
+ }, \
+ .resource = _name##_id##_resource, \
+ .num_resources = ARRAY_SIZE(_name##_id##_resource), \
+}
+
+#define DEV_CLK(_name, devname, bus, _index) \
+static struct clk devname##_##_name = { \
+ .name = #_name, \
+ .dev = &devname##_device.dev, \
+ .parent = &bus##_clk, \
+ .mode = bus##_clk_mode, \
+ .get_rate = bus##_clk_get_rate, \
+ .index = _index, \
+}
+
+enum {
+ PIOA,
+ PIOB,
+ PIOC,
+ PIOD,
+};
+
+enum {
+ FUNC_A,
+ FUNC_B,
+};
+
+unsigned long at32ap7000_osc_rates[3] = {
+ [0] = 32768,
+ /* FIXME: these are ATSTK1002-specific */
+ [1] = 20000000,
+ [2] = 12000000,
+};
+
+static unsigned long osc_get_rate(struct clk *clk)
+{
+ return at32ap7000_osc_rates[clk->index];
+}
+
+static unsigned long pll_get_rate(struct clk *clk, unsigned long control)
+{
+ unsigned long div, mul, rate;
+
+ if (!(control & SM_BIT(PLLEN)))
+ return 0;
+
+ div = SM_BFEXT(PLLDIV, control) + 1;
+ mul = SM_BFEXT(PLLMUL, control) + 1;
+
+ rate = clk->parent->get_rate(clk->parent);
+ rate = (rate + div / 2) / div;
+ rate *= mul;
+
+ return rate;
+}
+
+static unsigned long pll0_get_rate(struct clk *clk)
+{
+ u32 control;
+
+ control = sm_readl(&system_manager, PM_PLL0);
+
+ return pll_get_rate(clk, control);
+}
+
+static unsigned long pll1_get_rate(struct clk *clk)
+{
+ u32 control;
+
+ control = sm_readl(&system_manager, PM_PLL1);
+
+ return pll_get_rate(clk, control);
+}
+
+/*
+ * The AT32AP7000 has five primary clock sources: One 32kHz
+ * oscillator, two crystal oscillators and two PLLs.
+ */
+static struct clk osc32k = {
+ .name = "osc32k",
+ .get_rate = osc_get_rate,
+ .users = 1,
+ .index = 0,
+};
+static struct clk osc0 = {
+ .name = "osc0",
+ .get_rate = osc_get_rate,
+ .users = 1,
+ .index = 1,
+};
+static struct clk osc1 = {
+ .name = "osc1",
+ .get_rate = osc_get_rate,
+ .index = 2,
+};
+static struct clk pll0 = {
+ .name = "pll0",
+ .get_rate = pll0_get_rate,
+ .parent = &osc0,
+};
+static struct clk pll1 = {
+ .name = "pll1",
+ .get_rate = pll1_get_rate,
+ .parent = &osc0,
+};
+
+/*
+ * The main clock can be either osc0 or pll0. The boot loader may
+ * have chosen one for us, so we don't really know which one until we
+ * have a look at the SM.
+ */
+static struct clk *main_clock;
+
+/*
+ * Synchronous clocks are generated from the main clock. The clocks
+ * must satisfy the constraint
+ * fCPU >= fHSB >= fPB
+ * i.e. each clock must not be faster than its parent.
+ */
+static unsigned long bus_clk_get_rate(struct clk *clk, unsigned int shift)
+{
+ return main_clock->get_rate(main_clock) >> shift;
+};
+
+static void cpu_clk_mode(struct clk *clk, int enabled)
+{
+ struct at32_sm *sm = &system_manager;
+ unsigned long flags;
+ u32 mask;
+
+ spin_lock_irqsave(&sm->lock, flags);
+ mask = sm_readl(sm, PM_CPU_MASK);
+ if (enabled)
+ mask |= 1 << clk->index;
+ else
+ mask &= ~(1 << clk->index);
+ sm_writel(sm, PM_CPU_MASK, mask);
+ spin_unlock_irqrestore(&sm->lock, flags);
+}
+
+static unsigned long cpu_clk_get_rate(struct clk *clk)
+{
+ unsigned long cksel, shift = 0;
+
+ cksel = sm_readl(&system_manager, PM_CKSEL);
+ if (cksel & SM_BIT(CPUDIV))
+ shift = SM_BFEXT(CPUSEL, cksel) + 1;
+
+ return bus_clk_get_rate(clk, shift);
+}
+
+static void hsb_clk_mode(struct clk *clk, int enabled)
+{
+ struct at32_sm *sm = &system_manager;
+ unsigned long flags;
+ u32 mask;
+
+ spin_lock_irqsave(&sm->lock, flags);
+ mask = sm_readl(sm, PM_HSB_MASK);
+ if (enabled)
+ mask |= 1 << clk->index;
+ else
+ mask &= ~(1 << clk->index);
+ sm_writel(sm, PM_HSB_MASK, mask);
+ spin_unlock_irqrestore(&sm->lock, flags);
+}
+
+static unsigned long hsb_clk_get_rate(struct clk *clk)
+{
+ unsigned long cksel, shift = 0;
+
+ cksel = sm_readl(&system_manager, PM_CKSEL);
+ if (cksel & SM_BIT(HSBDIV))
+ shift = SM_BFEXT(HSBSEL, cksel) + 1;
+
+ return bus_clk_get_rate(clk, shift);
+}
+
+static void pba_clk_mode(struct clk *clk, int enabled)
+{
+ struct at32_sm *sm = &system_manager;
+ unsigned long flags;
+ u32 mask;
+
+ spin_lock_irqsave(&sm->lock, flags);
+ mask = sm_readl(sm, PM_PBA_MASK);
+ if (enabled)
+ mask |= 1 << clk->index;
+ else
+ mask &= ~(1 << clk->index);
+ sm_writel(sm, PM_PBA_MASK, mask);
+ spin_unlock_irqrestore(&sm->lock, flags);
+}
+
+static unsigned long pba_clk_get_rate(struct clk *clk)
+{
+ unsigned long cksel, shift = 0;
+
+ cksel = sm_readl(&system_manager, PM_CKSEL);
+ if (cksel & SM_BIT(PBADIV))
+ shift = SM_BFEXT(PBASEL, cksel) + 1;
+
+ return bus_clk_get_rate(clk, shift);
+}
+
+static void pbb_clk_mode(struct clk *clk, int enabled)
+{
+ struct at32_sm *sm = &system_manager;
+ unsigned long flags;
+ u32 mask;
+
+ spin_lock_irqsave(&sm->lock, flags);
+ mask = sm_readl(sm, PM_PBB_MASK);
+ if (enabled)
+ mask |= 1 << clk->index;
+ else
+ mask &= ~(1 << clk->index);
+ sm_writel(sm, PM_PBB_MASK, mask);
+ spin_unlock_irqrestore(&sm->lock, flags);
+}
+
+static unsigned long pbb_clk_get_rate(struct clk *clk)
+{
+ unsigned long cksel, shift = 0;
+
+ cksel = sm_readl(&system_manager, PM_CKSEL);
+ if (cksel & SM_BIT(PBBDIV))
+ shift = SM_BFEXT(PBBSEL, cksel) + 1;
+
+ return bus_clk_get_rate(clk, shift);
+}
+
+static struct clk cpu_clk = {
+ .name = "cpu",
+ .get_rate = cpu_clk_get_rate,
+ .users = 1,
+};
+static struct clk hsb_clk = {
+ .name = "hsb",
+ .parent = &cpu_clk,
+ .get_rate = hsb_clk_get_rate,
+};
+static struct clk pba_clk = {
+ .name = "pba",
+ .parent = &hsb_clk,
+ .mode = hsb_clk_mode,
+ .get_rate = pba_clk_get_rate,
+ .index = 1,
+};
+static struct clk pbb_clk = {
+ .name = "pbb",
+ .parent = &hsb_clk,
+ .mode = hsb_clk_mode,
+ .get_rate = pbb_clk_get_rate,
+ .users = 1,
+ .index = 2,
+};
+
+/* --------------------------------------------------------------------
+ * Generic Clock operations
+ * -------------------------------------------------------------------- */
+
+static void genclk_mode(struct clk *clk, int enabled)
+{
+ u32 control;
+
+ BUG_ON(clk->index > 7);
+
+ control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
+ if (enabled)
+ control |= SM_BIT(CEN);
+ else
+ control &= ~SM_BIT(CEN);
+ sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, control);
+}
+
+static unsigned long genclk_get_rate(struct clk *clk)
+{
+ u32 control;
+ unsigned long div = 1;
+
+ BUG_ON(clk->index > 7);
+
+ if (!clk->parent)
+ return 0;
+
+ control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
+ if (control & SM_BIT(DIVEN))
+ div = 2 * (SM_BFEXT(DIV, control) + 1);
+
+ return clk->parent->get_rate(clk->parent) / div;
+}
+
+static long genclk_set_rate(struct clk *clk, unsigned long rate, int apply)
+{
+ u32 control;
+ unsigned long parent_rate, actual_rate, div;
+
+ BUG_ON(clk->index > 7);
+
+ if (!clk->parent)
+ return 0;
+
+ parent_rate = clk->parent->get_rate(clk->parent);
+ control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
+
+ if (rate > 3 * parent_rate / 4) {
+ actual_rate = parent_rate;
+ control &= ~SM_BIT(DIVEN);
+ } else {
+ div = (parent_rate + rate) / (2 * rate) - 1;
+ control = SM_BFINS(DIV, div, control) | SM_BIT(DIVEN);
+ actual_rate = parent_rate / (2 * (div + 1));
+ }
+
+ printk("clk %s: new rate %lu (actual rate %lu)\n",
+ clk->name, rate, actual_rate);
+
+ if (apply)
+ sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index,
+ control);
+
+ return actual_rate;
+}
+
+int genclk_set_parent(struct clk *clk, struct clk *parent)
+{
+ u32 control;
+
+ BUG_ON(clk->index > 7);
+
+ printk("clk %s: new parent %s (was %s)\n",
+ clk->name, parent->name,
+ clk->parent ? clk->parent->name : "(null)");
+
+ control = sm_readl(&system_manager, PM_GCCTRL + 4 * clk->index);
+
+ if (parent == &osc1 || parent == &pll1)
+ control |= SM_BIT(OSCSEL);
+ else if (parent == &osc0 || parent == &pll0)
+ control &= ~SM_BIT(OSCSEL);
+ else
+ return -EINVAL;
+
+ if (parent == &pll0 || parent == &pll1)
+ control |= SM_BIT(PLLSEL);
+ else
+ control &= ~SM_BIT(PLLSEL);
+
+ sm_writel(&system_manager, PM_GCCTRL + 4 * clk->index, control);
+ clk->parent = parent;
+
+ return 0;
+}
+
+/* --------------------------------------------------------------------
+ * System peripherals
+ * -------------------------------------------------------------------- */
+static struct resource sm_resource[] = {
+ PBMEM(0xfff00000),
+ NAMED_IRQ(19, "eim"),
+ NAMED_IRQ(20, "pm"),
+ NAMED_IRQ(21, "rtc"),
+};
+struct platform_device at32_sm_device = {
+ .name = "sm",
+ .id = 0,
+ .resource = sm_resource,
+ .num_resources = ARRAY_SIZE(sm_resource),
+};
+DEV_CLK(pclk, at32_sm, pbb, 0);
+
+static struct resource intc0_resource[] = {
+ PBMEM(0xfff00400),
+};
+struct platform_device at32_intc0_device = {
+ .name = "intc",
+ .id = 0,
+ .resource = intc0_resource,
+ .num_resources = ARRAY_SIZE(intc0_resource),
+};
+DEV_CLK(pclk, at32_intc0, pbb, 1);
+
+static struct clk ebi_clk = {
+ .name = "ebi",
+ .parent = &hsb_clk,
+ .mode = hsb_clk_mode,
+ .get_rate = hsb_clk_get_rate,
+ .users = 1,
+};
+static struct clk hramc_clk = {
+ .name = "hramc",
+ .parent = &hsb_clk,
+ .mode = hsb_clk_mode,
+ .get_rate = hsb_clk_get_rate,
+ .users = 1,
+};
+
+static struct platform_device pdc_device = {
+ .name = "pdc",
+ .id = 0,
+};
+DEV_CLK(hclk, pdc, hsb, 4);
+DEV_CLK(pclk, pdc, pba, 16);
+
+static struct clk pico_clk = {
+ .name = "pico",
+ .parent = &cpu_clk,
+ .mode = cpu_clk_mode,
+ .get_rate = cpu_clk_get_rate,
+ .users = 1,
+};
+
+/* --------------------------------------------------------------------
+ * PIO
+ * -------------------------------------------------------------------- */
+
+static struct resource pio0_resource[] = {
+ PBMEM(0xffe02800),
+ IRQ(13),
+};
+DEFINE_DEV(pio, 0);
+DEV_CLK(mck, pio0, pba, 10);
+
+static struct resource pio1_resource[] = {
+ PBMEM(0xffe02c00),
+ IRQ(14),
+};
+DEFINE_DEV(pio, 1);
+DEV_CLK(mck, pio1, pba, 11);
+
+static struct resource pio2_resource[] = {
+ PBMEM(0xffe03000),
+ IRQ(15),
+};
+DEFINE_DEV(pio, 2);
+DEV_CLK(mck, pio2, pba, 12);
+
+static struct resource pio3_resource[] = {
+ PBMEM(0xffe03400),
+ IRQ(16),
+};
+DEFINE_DEV(pio, 3);
+DEV_CLK(mck, pio3, pba, 13);
+
+void __init at32_add_system_devices(void)
+{
+ system_manager.eim_first_irq = NR_INTERNAL_IRQS;
+
+ platform_device_register(&at32_sm_device);
+ platform_device_register(&at32_intc0_device);
+ platform_device_register(&pdc_device);
+
+ platform_device_register(&pio0_device);
+ platform_device_register(&pio1_device);
+ platform_device_register(&pio2_device);
+ platform_device_register(&pio3_device);
+}
+
+/* --------------------------------------------------------------------
+ * USART
+ * -------------------------------------------------------------------- */
+
+static struct resource usart0_resource[] = {
+ PBMEM(0xffe00c00),
+ IRQ(7),
+};
+DEFINE_DEV(usart, 0);
+DEV_CLK(usart, usart0, pba, 4);
+
+static struct resource usart1_resource[] = {
+ PBMEM(0xffe01000),
+ IRQ(7),
+};
+DEFINE_DEV(usart, 1);
+DEV_CLK(usart, usart1, pba, 4);
+
+static struct resource usart2_resource[] = {
+ PBMEM(0xffe01400),
+ IRQ(8),
+};
+DEFINE_DEV(usart, 2);
+DEV_CLK(usart, usart2, pba, 5);
+
+static struct resource usart3_resource[] = {
+ PBMEM(0xffe01800),
+ IRQ(9),
+};
+DEFINE_DEV(usart, 3);
+DEV_CLK(usart, usart3, pba, 6);
+
+static inline void configure_usart0_pins(void)
+{
+ portmux_set_func(PIOA, 8, FUNC_B); /* RXD */
+ portmux_set_func(PIOA, 9, FUNC_B); /* TXD */
+}
+
+static inline void configure_usart1_pins(void)
+{
+ portmux_set_func(PIOA, 17, FUNC_A); /* RXD */
+ portmux_set_func(PIOA, 18, FUNC_A); /* TXD */
+}
+
+static inline void configure_usart2_pins(void)
+{
+ portmux_set_func(PIOB, 26, FUNC_B); /* RXD */
+ portmux_set_func(PIOB, 27, FUNC_B); /* TXD */
+}
+
+static inline void configure_usart3_pins(void)
+{
+ portmux_set_func(PIOB, 18, FUNC_B); /* RXD */
+ portmux_set_func(PIOB, 17, FUNC_B); /* TXD */
+}
+
+static struct platform_device *setup_usart(unsigned int id)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &usart0_device;
+ configure_usart0_pins();
+ break;
+ case 1:
+ pdev = &usart1_device;
+ configure_usart1_pins();
+ break;
+ case 2:
+ pdev = &usart2_device;
+ configure_usart2_pins();
+ break;
+ case 3:
+ pdev = &usart3_device;
+ configure_usart3_pins();
+ break;
+ default:
+ pdev = NULL;
+ break;
+ }
+
+ return pdev;
+}
+
+struct platform_device *__init at32_add_device_usart(unsigned int id)
+{
+ struct platform_device *pdev;
+
+ pdev = setup_usart(id);
+ if (pdev)
+ platform_device_register(pdev);
+
+ return pdev;
+}
+
+struct platform_device *at91_default_console_device;
+
+void __init at32_setup_serial_console(unsigned int usart_id)
+{
+ at91_default_console_device = setup_usart(usart_id);
+}
+
+/* --------------------------------------------------------------------
+ * Ethernet
+ * -------------------------------------------------------------------- */
+
+static struct eth_platform_data macb0_data;
+static struct resource macb0_resource[] = {
+ PBMEM(0xfff01800),
+ IRQ(25),
+};
+DEFINE_DEV_DATA(macb, 0);
+DEV_CLK(hclk, macb0, hsb, 8);
+DEV_CLK(pclk, macb0, pbb, 6);
+
+struct platform_device *__init
+at32_add_device_eth(unsigned int id, struct eth_platform_data *data)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &macb0_device;
+
+ portmux_set_func(PIOC, 3, FUNC_A); /* TXD0 */
+ portmux_set_func(PIOC, 4, FUNC_A); /* TXD1 */
+ portmux_set_func(PIOC, 7, FUNC_A); /* TXEN */
+ portmux_set_func(PIOC, 8, FUNC_A); /* TXCK */
+ portmux_set_func(PIOC, 9, FUNC_A); /* RXD0 */
+ portmux_set_func(PIOC, 10, FUNC_A); /* RXD1 */
+ portmux_set_func(PIOC, 13, FUNC_A); /* RXER */
+ portmux_set_func(PIOC, 15, FUNC_A); /* RXDV */
+ portmux_set_func(PIOC, 16, FUNC_A); /* MDC */
+ portmux_set_func(PIOC, 17, FUNC_A); /* MDIO */
+
+ if (!data->is_rmii) {
+ portmux_set_func(PIOC, 0, FUNC_A); /* COL */
+ portmux_set_func(PIOC, 1, FUNC_A); /* CRS */
+ portmux_set_func(PIOC, 2, FUNC_A); /* TXER */
+ portmux_set_func(PIOC, 5, FUNC_A); /* TXD2 */
+ portmux_set_func(PIOC, 6, FUNC_A); /* TXD3 */
+ portmux_set_func(PIOC, 11, FUNC_A); /* RXD2 */
+ portmux_set_func(PIOC, 12, FUNC_A); /* RXD3 */
+ portmux_set_func(PIOC, 14, FUNC_A); /* RXCK */
+ portmux_set_func(PIOC, 18, FUNC_A); /* SPD */
+ }
+ break;
+
+ default:
+ return NULL;
+ }
+
+ memcpy(pdev->dev.platform_data, data, sizeof(struct eth_platform_data));
+ platform_device_register(pdev);
+
+ return pdev;
+}
+
+/* --------------------------------------------------------------------
+ * SPI
+ * -------------------------------------------------------------------- */
+static struct resource spi0_resource[] = {
+ PBMEM(0xffe00000),
+ IRQ(3),
+};
+DEFINE_DEV(spi, 0);
+DEV_CLK(mck, spi0, pba, 0);
+
+struct platform_device *__init at32_add_device_spi(unsigned int id)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &spi0_device;
+ portmux_set_func(PIOA, 0, FUNC_A); /* MISO */
+ portmux_set_func(PIOA, 1, FUNC_A); /* MOSI */
+ portmux_set_func(PIOA, 2, FUNC_A); /* SCK */
+ portmux_set_func(PIOA, 3, FUNC_A); /* NPCS0 */
+ portmux_set_func(PIOA, 4, FUNC_A); /* NPCS1 */
+ portmux_set_func(PIOA, 5, FUNC_A); /* NPCS2 */
+ break;
+
+ default:
+ return NULL;
+ }
+
+ platform_device_register(pdev);
+ return pdev;
+}
+
+/* --------------------------------------------------------------------
+ * LCDC
+ * -------------------------------------------------------------------- */
+static struct lcdc_platform_data lcdc0_data;
+static struct resource lcdc0_resource[] = {
+ {
+ .start = 0xff000000,
+ .end = 0xff000fff,
+ .flags = IORESOURCE_MEM,
+ },
+ IRQ(1),
+};
+DEFINE_DEV_DATA(lcdc, 0);
+DEV_CLK(hclk, lcdc0, hsb, 7);
+static struct clk lcdc0_pixclk = {
+ .name = "pixclk",
+ .dev = &lcdc0_device.dev,
+ .mode = genclk_mode,
+ .get_rate = genclk_get_rate,
+ .set_rate = genclk_set_rate,
+ .set_parent = genclk_set_parent,
+ .index = 7,
+};
+
+struct platform_device *__init
+at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0:
+ pdev = &lcdc0_device;
+ portmux_set_func(PIOC, 19, FUNC_A); /* CC */
+ portmux_set_func(PIOC, 20, FUNC_A); /* HSYNC */
+ portmux_set_func(PIOC, 21, FUNC_A); /* PCLK */
+ portmux_set_func(PIOC, 22, FUNC_A); /* VSYNC */
+ portmux_set_func(PIOC, 23, FUNC_A); /* DVAL */
+ portmux_set_func(PIOC, 24, FUNC_A); /* MODE */
+ portmux_set_func(PIOC, 25, FUNC_A); /* PWR */
+ portmux_set_func(PIOC, 26, FUNC_A); /* DATA0 */
+ portmux_set_func(PIOC, 27, FUNC_A); /* DATA1 */
+ portmux_set_func(PIOC, 28, FUNC_A); /* DATA2 */
+ portmux_set_func(PIOC, 29, FUNC_A); /* DATA3 */
+ portmux_set_func(PIOC, 30, FUNC_A); /* DATA4 */
+ portmux_set_func(PIOC, 31, FUNC_A); /* DATA5 */
+ portmux_set_func(PIOD, 0, FUNC_A); /* DATA6 */
+ portmux_set_func(PIOD, 1, FUNC_A); /* DATA7 */
+ portmux_set_func(PIOD, 2, FUNC_A); /* DATA8 */
+ portmux_set_func(PIOD, 3, FUNC_A); /* DATA9 */
+ portmux_set_func(PIOD, 4, FUNC_A); /* DATA10 */
+ portmux_set_func(PIOD, 5, FUNC_A); /* DATA11 */
+ portmux_set_func(PIOD, 6, FUNC_A); /* DATA12 */
+ portmux_set_func(PIOD, 7, FUNC_A); /* DATA13 */
+ portmux_set_func(PIOD, 8, FUNC_A); /* DATA14 */
+ portmux_set_func(PIOD, 9, FUNC_A); /* DATA15 */
+ portmux_set_func(PIOD, 10, FUNC_A); /* DATA16 */
+ portmux_set_func(PIOD, 11, FUNC_A); /* DATA17 */
+ portmux_set_func(PIOD, 12, FUNC_A); /* DATA18 */
+ portmux_set_func(PIOD, 13, FUNC_A); /* DATA19 */
+ portmux_set_func(PIOD, 14, FUNC_A); /* DATA20 */
+ portmux_set_func(PIOD, 15, FUNC_A); /* DATA21 */
+ portmux_set_func(PIOD, 16, FUNC_A); /* DATA22 */
+ portmux_set_func(PIOD, 17, FUNC_A); /* DATA23 */
+
+ clk_set_parent(&lcdc0_pixclk, &pll0);
+ clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));
+ break;
+
+ default:
+ return NULL;
+ }
+
+ memcpy(pdev->dev.platform_data, data,
+ sizeof(struct lcdc_platform_data));
+
+ platform_device_register(pdev);
+ return pdev;
+}
+
+struct clk *at32_clock_list[] = {
+ &osc32k,
+ &osc0,
+ &osc1,
+ &pll0,
+ &pll1,
+ &cpu_clk,
+ &hsb_clk,
+ &pba_clk,
+ &pbb_clk,
+ &at32_sm_pclk,
+ &at32_intc0_pclk,
+ &ebi_clk,
+ &hramc_clk,
+ &pdc_hclk,
+ &pdc_pclk,
+ &pico_clk,
+ &pio0_mck,
+ &pio1_mck,
+ &pio2_mck,
+ &pio3_mck,
+ &usart0_usart,
+ &usart1_usart,
+ &usart2_usart,
+ &usart3_usart,
+ &macb0_hclk,
+ &macb0_pclk,
+ &spi0_mck,
+ &lcdc0_hclk,
+ &lcdc0_pixclk,
+};
+unsigned int at32_nr_clocks = ARRAY_SIZE(at32_clock_list);
+
+void __init at32_portmux_init(void)
+{
+ at32_init_pio(&pio0_device);
+ at32_init_pio(&pio1_device);
+ at32_init_pio(&pio2_device);
+ at32_init_pio(&pio3_device);
+}
+
+void __init at32_clock_init(void)
+{
+ struct at32_sm *sm = &system_manager;
+ u32 cpu_mask = 0, hsb_mask = 0, pba_mask = 0, pbb_mask = 0;
+ int i;
+
+ if (sm_readl(sm, PM_MCCTRL) & SM_BIT(PLLSEL))
+ main_clock = &pll0;
+ else
+ main_clock = &osc0;
+
+ if (sm_readl(sm, PM_PLL0) & SM_BIT(PLLOSC))
+ pll0.parent = &osc1;
+ if (sm_readl(sm, PM_PLL1) & SM_BIT(PLLOSC))
+ pll1.parent = &osc1;
+
+ /*
+ * Turn on all clocks that have at least one user already, and
+ * turn off everything else. We only do this for module
+ * clocks, and even though it isn't particularly pretty to
+ * check the address of the mode function, it should do the
+ * trick...
+ */
+ for (i = 0; i < ARRAY_SIZE(at32_clock_list); i++) {
+ struct clk *clk = at32_clock_list[i];
+
+ if (clk->mode == &cpu_clk_mode)
+ cpu_mask |= 1 << clk->index;
+ else if (clk->mode == &hsb_clk_mode)
+ hsb_mask |= 1 << clk->index;
+ else if (clk->mode == &pba_clk_mode)
+ pba_mask |= 1 << clk->index;
+ else if (clk->mode == &pbb_clk_mode)
+ pbb_mask |= 1 << clk->index;
+ }
+
+ sm_writel(sm, PM_CPU_MASK, cpu_mask);
+ sm_writel(sm, PM_HSB_MASK, hsb_mask);
+ sm_writel(sm, PM_PBA_MASK, pba_mask);
+ sm_writel(sm, PM_PBB_MASK, pbb_mask);
+}