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authorOlof Johansson <olof@lixom.net>2012-09-20 21:16:43 -0700
committerOlof Johansson <olof@lixom.net>2012-09-20 21:16:43 -0700
commitea832c41dacbc4a5f3888d9ef7c38213914aba2a (patch)
treebee97817d9a55f000e2bec5fa5d62d325050e6a6 /arch/arm/mach-pxa
parentb74aae9a2074e1caa2e40bf119f3a633f77c94e4 (diff)
parent84bae6c379e362aa017efd417199f51d5c2273ac (diff)
Merge branch 'next/dt' into next/multiplatform
* next/dt: (182 commits) ARM: tegra: Add Avionic Design Tamonten Evaluation Carrier support ARM: tegra: Add Avionic Design Medcom-Wide support ARM: tegra: Add Avionic Design Plutux support ARM: tegra: Add Avionic Design Tamonten support ARM: tegra: dts: Add pwm label ARM: dt: tegra: whistler: configure power off ARM: mxs: m28evk: Disable OCOTP OUI loading ARM: imx6q: use pll2_pfd2_396m as the enfc_sel's parent ARM: dts: imx6q-sabrelite: add usbotg pinctrl support ARM: dts: imx23-olinuxino: Add USB host support ARM: dts: imx6q-sabrelite: add usbmisc device ARM: dts: mx23: Add USB resources ARM: dts: mxs: Add ethernetX to macX aliases ARM: msm: Remove non-DT targets from 8960 ARM: msm: Add DT support for 8960 ARM: msm: Move io mapping prototypes to common.h ARM: msm: Rename board-msm8x60 to signify its DT only status ARM: msm: Make 8660 a DT only target ARM: msm: Move 8660 to DT timer ARM: msm: Add DT support to msm_timer ...
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/Kconfig12
-rw-r--r--arch/arm/mach-pxa/Makefile3
-rw-r--r--arch/arm/mach-pxa/clock-pxa3xx.c8
-rw-r--r--arch/arm/mach-pxa/include/mach/pxa3xx-regs.h1
-rw-r--r--arch/arm/mach-pxa/irq.c131
-rw-r--r--arch/arm/mach-pxa/pxa-dt.c63
-rw-r--r--arch/arm/mach-pxa/pxa3xx.c23
7 files changed, 215 insertions, 26 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index fe2d1f80ef50..8e6288de69b9 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -25,6 +25,18 @@ config PXA_V7_MACH_AUTO
if !ARCH_PXA_V7
comment "Intel/Marvell Dev Platforms (sorted by hardware release time)"
+config MACH_PXA3XX_DT
+ bool "Support PXA3xx platforms from device tree"
+ select PXA3xx
+ select CPU_PXA300
+ select POWER_SUPPLY
+ select HAVE_PWM
+ select USE_OF
+ help
+ Include support for Marvell PXA3xx based platforms using
+ the device tree. Needn't select any other machine while
+ MACH_PXA3XX_DT is enabled.
+
config ARCH_LUBBOCK
bool "Intel DBPXA250 Development Platform (aka Lubbock)"
select PXA25x
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index be0f7df8685c..2bedc9ed076c 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -26,6 +26,9 @@ obj-$(CONFIG_CPU_PXA930) += pxa930.o
# NOTE: keep the order of boards in accordance to their order in Kconfig
+# Device Tree support
+obj-$(CONFIG_MACH_PXA3XX_DT) += pxa-dt.o
+
# Intel/Marvell Dev Platforms
obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o
obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o
diff --git a/arch/arm/mach-pxa/clock-pxa3xx.c b/arch/arm/mach-pxa/clock-pxa3xx.c
index 2a37a9a8f621..d4e9499832dc 100644
--- a/arch/arm/mach-pxa/clock-pxa3xx.c
+++ b/arch/arm/mach-pxa/clock-pxa3xx.c
@@ -127,8 +127,10 @@ void clk_pxa3xx_cken_enable(struct clk *clk)
if (clk->cken < 32)
CKENA |= mask;
- else
+ else if (clk->cken < 64)
CKENB |= mask;
+ else
+ CKENC |= mask;
}
void clk_pxa3xx_cken_disable(struct clk *clk)
@@ -137,8 +139,10 @@ void clk_pxa3xx_cken_disable(struct clk *clk)
if (clk->cken < 32)
CKENA &= ~mask;
- else
+ else if (clk->cken < 64)
CKENB &= ~mask;
+ else
+ CKENC &= ~mask;
}
const struct clkops clk_pxa3xx_cken_ops = {
diff --git a/arch/arm/mach-pxa/include/mach/pxa3xx-regs.h b/arch/arm/mach-pxa/include/mach/pxa3xx-regs.h
index 207ecb49a61b..f4d48d20754e 100644
--- a/arch/arm/mach-pxa/include/mach/pxa3xx-regs.h
+++ b/arch/arm/mach-pxa/include/mach/pxa3xx-regs.h
@@ -131,6 +131,7 @@
#define AICSR __REG(0x41340008) /* Application Subsystem Interrupt Control/Status Register */
#define CKENA __REG(0x4134000C) /* A Clock Enable Register */
#define CKENB __REG(0x41340010) /* B Clock Enable Register */
+#define CKENC __REG(0x41340024) /* C Clock Enable Register */
#define AC97_DIV __REG(0x41340014) /* AC97 clock divisor value register */
#define ACCR_XPDIS (1 << 31) /* Core PLL Output Disable */
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 5dae15ea6718..b6cc1816463e 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -17,6 +17,8 @@
#include <linux/syscore_ops.h>
#include <linux/io.h>
#include <linux/irq.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
#include <asm/exception.h>
@@ -25,8 +27,6 @@
#include "generic.h"
-#define IRQ_BASE io_p2v(0x40d00000)
-
#define ICIP (0x000)
#define ICMR (0x004)
#define ICLR (0x008)
@@ -48,22 +48,19 @@
* This is for peripheral IRQs internal to the PXA chip.
*/
+static void __iomem *pxa_irq_base;
static int pxa_internal_irq_nr;
-
-static inline int cpu_has_ipr(void)
-{
- return !cpu_is_pxa25x();
-}
+static bool cpu_has_ipr;
static inline void __iomem *irq_base(int i)
{
- static unsigned long phys_base[] = {
- 0x40d00000,
- 0x40d0009c,
- 0x40d00130,
+ static unsigned long phys_base_offset[] = {
+ 0x0,
+ 0x9c,
+ 0x130,
};
- return io_p2v(phys_base[i]);
+ return pxa_irq_base + phys_base_offset[i];
}
void pxa_mask_irq(struct irq_data *d)
@@ -96,8 +93,8 @@ asmlinkage void __exception_irq_entry icip_handle_irq(struct pt_regs *regs)
uint32_t icip, icmr, mask;
do {
- icip = __raw_readl(IRQ_BASE + ICIP);
- icmr = __raw_readl(IRQ_BASE + ICMR);
+ icip = __raw_readl(pxa_irq_base + ICIP);
+ icmr = __raw_readl(pxa_irq_base + ICMR);
mask = icip & icmr;
if (mask == 0)
@@ -128,6 +125,8 @@ void __init pxa_init_irq(int irq_nr, int (*fn)(struct irq_data *, unsigned int))
BUG_ON(irq_nr > MAX_INTERNAL_IRQS);
pxa_internal_irq_nr = irq_nr;
+ cpu_has_ipr = !cpu_is_pxa25x();
+ pxa_irq_base = io_p2v(0x40d00000);
for (n = 0; n < irq_nr; n += 32) {
void __iomem *base = irq_base(n >> 5);
@@ -136,8 +135,8 @@ void __init pxa_init_irq(int irq_nr, int (*fn)(struct irq_data *, unsigned int))
__raw_writel(0, base + ICLR); /* all IRQs are IRQ, not FIQ */
for (i = n; (i < (n + 32)) && (i < irq_nr); i++) {
/* initialize interrupt priority */
- if (cpu_has_ipr())
- __raw_writel(i | IPR_VALID, IRQ_BASE + IPR(i));
+ if (cpu_has_ipr)
+ __raw_writel(i | IPR_VALID, pxa_irq_base + IPR(i));
irq = PXA_IRQ(i);
irq_set_chip_and_handler(irq, &pxa_internal_irq_chip,
@@ -168,9 +167,9 @@ static int pxa_irq_suspend(void)
__raw_writel(0, base + ICMR);
}
- if (cpu_has_ipr()) {
+ if (cpu_has_ipr) {
for (i = 0; i < pxa_internal_irq_nr; i++)
- saved_ipr[i] = __raw_readl(IRQ_BASE + IPR(i));
+ saved_ipr[i] = __raw_readl(pxa_irq_base + IPR(i));
}
return 0;
@@ -187,11 +186,11 @@ static void pxa_irq_resume(void)
__raw_writel(0, base + ICLR);
}
- if (cpu_has_ipr())
+ if (cpu_has_ipr)
for (i = 0; i < pxa_internal_irq_nr; i++)
- __raw_writel(saved_ipr[i], IRQ_BASE + IPR(i));
+ __raw_writel(saved_ipr[i], pxa_irq_base + IPR(i));
- __raw_writel(1, IRQ_BASE + ICCR);
+ __raw_writel(1, pxa_irq_base + ICCR);
}
#else
#define pxa_irq_suspend NULL
@@ -202,3 +201,93 @@ struct syscore_ops pxa_irq_syscore_ops = {
.suspend = pxa_irq_suspend,
.resume = pxa_irq_resume,
};
+
+#ifdef CONFIG_OF
+static struct irq_domain *pxa_irq_domain;
+
+static int pxa_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ void __iomem *base = irq_base(hw / 32);
+
+ /* initialize interrupt priority */
+ if (cpu_has_ipr)
+ __raw_writel(hw | IPR_VALID, pxa_irq_base + IPR(hw));
+
+ irq_set_chip_and_handler(hw, &pxa_internal_irq_chip,
+ handle_level_irq);
+ irq_set_chip_data(hw, base);
+ set_irq_flags(hw, IRQF_VALID);
+
+ return 0;
+}
+
+static struct irq_domain_ops pxa_irq_ops = {
+ .map = pxa_irq_map,
+ .xlate = irq_domain_xlate_onecell,
+};
+
+static const struct of_device_id intc_ids[] __initconst = {
+ { .compatible = "marvell,pxa-intc", },
+ {}
+};
+
+void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int))
+{
+ struct device_node *node;
+ const struct of_device_id *of_id;
+ struct pxa_intc_conf *conf;
+ struct resource res;
+ int n, ret;
+
+ node = of_find_matching_node(NULL, intc_ids);
+ if (!node) {
+ pr_err("Failed to find interrupt controller in arch-pxa\n");
+ return;
+ }
+ of_id = of_match_node(intc_ids, node);
+ conf = of_id->data;
+
+ ret = of_property_read_u32(node, "marvell,intc-nr-irqs",
+ &pxa_internal_irq_nr);
+ if (ret) {
+ pr_err("Not found marvell,intc-nr-irqs property\n");
+ return;
+ }
+
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret < 0) {
+ pr_err("No registers defined for node\n");
+ return;
+ }
+ pxa_irq_base = io_p2v(res.start);
+
+ if (of_find_property(node, "marvell,intc-priority", NULL))
+ cpu_has_ipr = 1;
+
+ ret = irq_alloc_descs(-1, 0, pxa_internal_irq_nr, 0);
+ if (ret < 0) {
+ pr_err("Failed to allocate IRQ numbers\n");
+ return;
+ }
+
+ pxa_irq_domain = irq_domain_add_legacy(node, pxa_internal_irq_nr, 0, 0,
+ &pxa_irq_ops, NULL);
+ if (!pxa_irq_domain)
+ panic("Unable to add PXA IRQ domain\n");
+
+ irq_set_default_host(pxa_irq_domain);
+
+ for (n = 0; n < pxa_internal_irq_nr; n += 32) {
+ void __iomem *base = irq_base(n >> 5);
+
+ __raw_writel(0, base + ICMR); /* disable all IRQs */
+ __raw_writel(0, base + ICLR); /* all IRQs are IRQ, not FIQ */
+ }
+
+ /* only unmasked interrupts kick us out of idle */
+ __raw_writel(1, irq_base(0) + ICCR);
+
+ pxa_internal_irq_chip.irq_set_wake = fn;
+}
+#endif /* CONFIG_OF */
diff --git a/arch/arm/mach-pxa/pxa-dt.c b/arch/arm/mach-pxa/pxa-dt.c
new file mode 100644
index 000000000000..c9192cea0033
--- /dev/null
+++ b/arch/arm/mach-pxa/pxa-dt.c
@@ -0,0 +1,63 @@
+/*
+ * linux/arch/arm/mach-pxa/pxa-dt.c
+ *
+ * Copyright (C) 2012 Daniel Mack
+ *
+ * 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
+ * publishhed by the Free Software Foundation.
+ */
+
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <mach/irqs.h>
+#include <mach/pxa3xx.h>
+
+#include "generic.h"
+
+#ifdef CONFIG_PXA3xx
+extern void __init pxa3xx_dt_init_irq(void);
+
+static const struct of_dev_auxdata pxa3xx_auxdata_lookup[] __initconst = {
+ OF_DEV_AUXDATA("mrvl,pxa-uart", 0x40100000, "pxa2xx-uart.0", NULL),
+ OF_DEV_AUXDATA("mrvl,pxa-uart", 0x40200000, "pxa2xx-uart.1", NULL),
+ OF_DEV_AUXDATA("mrvl,pxa-uart", 0x40700000, "pxa2xx-uart.2", NULL),
+ OF_DEV_AUXDATA("mrvl,pxa-uart", 0x41600000, "pxa2xx-uart.3", NULL),
+ OF_DEV_AUXDATA("marvell,pxa-mmc", 0x41100000, "pxa2xx-mci.0", NULL),
+ OF_DEV_AUXDATA("mrvl,pxa-gpio", 0x40e00000, "pxa-gpio", NULL),
+ OF_DEV_AUXDATA("marvell,pxa-ohci", 0x4c000000, "pxa27x-ohci", NULL),
+ OF_DEV_AUXDATA("mrvl,pxa-i2c", 0x40301680, "pxa2xx-i2c.0", NULL),
+ OF_DEV_AUXDATA("mrvl,pwri2c", 0x40f500c0, "pxa3xx-i2c.1", NULL),
+ OF_DEV_AUXDATA("marvell,pxa3xx-nand", 0x43100000, "pxa3xx-nand", NULL),
+ {}
+};
+
+static void __init pxa3xx_dt_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table,
+ pxa3xx_auxdata_lookup, NULL);
+}
+
+static const char *pxa3xx_dt_board_compat[] __initdata = {
+ "marvell,pxa300",
+ "marvell,pxa310",
+ "marvell,pxa320",
+ NULL,
+};
+#endif
+
+#ifdef CONFIG_PXA3xx
+DT_MACHINE_START(PXA_DT, "Marvell PXA3xx (Device Tree Support)")
+ .map_io = pxa3xx_map_io,
+ .init_irq = pxa3xx_dt_init_irq,
+ .handle_irq = pxa3xx_handle_irq,
+ .timer = &pxa_timer,
+ .restart = pxa_restart,
+ .init_machine = pxa3xx_dt_init,
+ .dt_compat = pxa3xx_dt_board_compat,
+MACHINE_END
+#endif
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index dffb7e813d98..ff9c9574ec3e 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -19,6 +19,7 @@
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/io.h>
+#include <linux/of.h>
#include <linux/syscore_ops.h>
#include <linux/i2c/pxa-i2c.h>
@@ -40,6 +41,8 @@
#define PECR_IE(n) ((1 << ((n) * 2)) << 28)
#define PECR_IS(n) ((1 << ((n) * 2)) << 29)
+extern void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int));
+
static DEFINE_PXA3_CKEN(pxa3xx_ffuart, FFUART, 14857000, 1);
static DEFINE_PXA3_CKEN(pxa3xx_btuart, BTUART, 14857000, 1);
static DEFINE_PXA3_CKEN(pxa3xx_stuart, STUART, 14857000, 1);
@@ -382,7 +385,7 @@ static void __init pxa_init_ext_wakeup_irq(int (*fn)(struct irq_data *,
pxa_ext_wakeup_chip.irq_set_wake = fn;
}
-void __init pxa3xx_init_irq(void)
+static void __init __pxa3xx_init_irq(void)
{
/* enable CP6 access */
u32 value;
@@ -390,10 +393,23 @@ void __init pxa3xx_init_irq(void)
value |= (1 << 6);
__asm__ __volatile__("mcr p15, 0, %0, c15, c1, 0\n": :"r"(value));
- pxa_init_irq(56, pxa3xx_set_wake);
pxa_init_ext_wakeup_irq(pxa3xx_set_wake);
}
+void __init pxa3xx_init_irq(void)
+{
+ __pxa3xx_init_irq();
+ pxa_init_irq(56, pxa3xx_set_wake);
+}
+
+#ifdef CONFIG_OF
+void __init pxa3xx_dt_init_irq(void)
+{
+ __pxa3xx_init_irq();
+ pxa_dt_irq_init(pxa3xx_set_wake);
+}
+#endif /* CONFIG_OF */
+
static struct map_desc pxa3xx_io_desc[] __initdata = {
{ /* Mem Ctl */
.virtual = (unsigned long)SMEMC_VIRT,
@@ -466,7 +482,8 @@ static int __init pxa3xx_init(void)
register_syscore_ops(&pxa3xx_mfp_syscore_ops);
register_syscore_ops(&pxa3xx_clock_syscore_ops);
- ret = platform_add_devices(devices, ARRAY_SIZE(devices));
+ if (!of_have_populated_dt())
+ ret = platform_add_devices(devices, ARRAY_SIZE(devices));
}
return ret;