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path: root/arch/arm/mach-integrator/integrator_ap.c
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Diffstat (limited to 'arch/arm/mach-integrator/integrator_ap.c')
-rw-r--r--arch/arm/mach-integrator/integrator_ap.c115
1 files changed, 56 insertions, 59 deletions
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
index d50dc2dbfd8..660ca6feff4 100644
--- a/arch/arm/mach-integrator/integrator_ap.c
+++ b/arch/arm/mach-integrator/integrator_ap.c
@@ -42,27 +42,29 @@
#include <linux/sys_soc.h>
#include <linux/termios.h>
#include <linux/sched_clock.h>
+#include <linux/clk-provider.h>
-#include <mach/hardware.h>
-#include <mach/platform.h>
#include <asm/hardware/arm_timer.h>
#include <asm/setup.h>
#include <asm/param.h> /* HZ */
#include <asm/mach-types.h>
-#include <mach/lm.h>
-
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
+#include "hardware.h"
#include "cm.h"
#include "common.h"
#include "pci_v3.h"
+#include "lm.h"
/* Base address to the AP system controller */
void __iomem *ap_syscon_base;
+/* Base address to the external bus interface */
+static void __iomem *ebi_base;
+
/*
* All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
@@ -72,15 +74,11 @@ void __iomem *ap_syscon_base;
* just for now).
*/
#define VA_IC_BASE __io_address(INTEGRATOR_IC_BASE)
-#define VA_EBI_BASE __io_address(INTEGRATOR_EBI_BASE)
-#define VA_CMIC_BASE __io_address(INTEGRATOR_HDR_IC)
/*
* Logical Physical
* ef000000 Cache flush
- * f1000000 10000000 Core module registers
* f1100000 11000000 System controller registers
- * f1200000 12000000 EBI registers
* f1300000 13000000 Counter/Timer
* f1400000 14000000 Interrupt controller
* f1600000 16000000 UART 0
@@ -91,16 +89,6 @@ void __iomem *ap_syscon_base;
static struct map_desc ap_io_desc[] __initdata __maybe_unused = {
{
- .virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
- .virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE),
- .pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE),
- .length = SZ_4K,
- .type = MT_DEVICE
- }, {
.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
.length = SZ_4K,
@@ -174,9 +162,6 @@ device_initcall(irq_syscore_init);
/*
* Flash handling.
*/
-#define EBI_CSR1 (VA_EBI_BASE + INTEGRATOR_EBI_CSR1_OFFSET)
-#define EBI_LOCK (VA_EBI_BASE + INTEGRATOR_EBI_LOCK_OFFSET)
-
static int ap_flash_init(struct platform_device *dev)
{
u32 tmp;
@@ -184,13 +169,15 @@ static int ap_flash_init(struct platform_device *dev)
writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP,
ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET);
- tmp = readl(EBI_CSR1) | INTEGRATOR_EBI_WRITE_ENABLE;
- writel(tmp, EBI_CSR1);
+ tmp = readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET) |
+ INTEGRATOR_EBI_WRITE_ENABLE;
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
- if (!(readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE)) {
- writel(0xa05f, EBI_LOCK);
- writel(tmp, EBI_CSR1);
- writel(0, EBI_LOCK);
+ if (!(readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET)
+ & INTEGRATOR_EBI_WRITE_ENABLE)) {
+ writel(0xa05f, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
+ writel(0, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
}
return 0;
}
@@ -202,13 +189,15 @@ static void ap_flash_exit(struct platform_device *dev)
writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP,
ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET);
- tmp = readl(EBI_CSR1) & ~INTEGRATOR_EBI_WRITE_ENABLE;
- writel(tmp, EBI_CSR1);
+ tmp = readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET) &
+ ~INTEGRATOR_EBI_WRITE_ENABLE;
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
- if (readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE) {
- writel(0xa05f, EBI_LOCK);
- writel(tmp, EBI_CSR1);
- writel(0, EBI_LOCK);
+ if (readl(ebi_base + INTEGRATOR_EBI_CSR1_OFFSET) &
+ INTEGRATOR_EBI_WRITE_ENABLE) {
+ writel(0xa05f, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
+ writel(tmp, ebi_base + INTEGRATOR_EBI_CSR1_OFFSET);
+ writel(0, ebi_base + INTEGRATOR_EBI_LOCK_OFFSET);
}
}
@@ -277,7 +266,7 @@ struct amba_pl010_data ap_uart_data = {
static unsigned long timer_reload;
-static u32 notrace integrator_read_sched_clock(void)
+static u64 notrace integrator_read_sched_clock(void)
{
return -readl((void __iomem *) TIMER2_VA_BASE + TIMER_VALUE);
}
@@ -298,7 +287,7 @@ static void integrator_clocksource_init(unsigned long inrate,
clocksource_mmio_init(base + TIMER_VALUE, "timer2",
rate, 200, 16, clocksource_mmio_readl_down);
- setup_sched_clock(integrator_read_sched_clock, 16, rate);
+ sched_clock_register(integrator_read_sched_clock, 16, rate);
}
static void __iomem * clkevt_base;
@@ -368,7 +357,7 @@ static struct clock_event_device integrator_clockevent = {
static struct irqaction integrator_timer_irq = {
.name = "timer",
- .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+ .flags = IRQF_TIMER | IRQF_IRQPOLL,
.handler = integrator_timer_interrupt,
.dev_id = &integrator_clockevent,
};
@@ -412,10 +401,7 @@ static void __init ap_of_timer_init(void)
struct clk *clk;
unsigned long rate;
- clk = clk_get_sys("ap_timer", NULL);
- BUG_ON(IS_ERR(clk));
- clk_prepare_enable(clk);
- rate = clk_get_rate(clk);
+ of_clk_init(NULL);
err = of_property_read_string(of_aliases,
"arm,timer-primary", &path);
@@ -425,6 +411,12 @@ static void __init ap_of_timer_init(void)
base = of_iomap(node, 0);
if (WARN_ON(!base))
return;
+
+ clk = of_clk_get(node, 0);
+ BUG_ON(IS_ERR(clk));
+ clk_prepare_enable(clk);
+ rate = clk_get_rate(clk);
+
writel(0, base + TIMER_CTRL);
integrator_clocksource_init(rate, base);
@@ -437,6 +429,12 @@ static void __init ap_of_timer_init(void)
if (WARN_ON(!base))
return;
irq = irq_of_parse_and_map(node, 0);
+
+ clk = of_clk_get(node, 0);
+ BUG_ON(IS_ERR(clk));
+ clk_prepare_enable(clk);
+ rate = clk_get_rate(clk);
+
writel(0, base + TIMER_CTRL);
integrator_clockevent_init(rate, base, irq);
}
@@ -450,7 +448,6 @@ static void __init ap_init_irq_of(void)
{
cm_init();
of_irq_init(fpga_irq_of_match);
- integrator_clk_init(false);
}
/* For the Device Tree, add in the UART callbacks as AUXDATA */
@@ -475,30 +472,38 @@ static const struct of_device_id ap_syscon_match[] = {
{ },
};
+static const struct of_device_id ebi_match[] = {
+ { .compatible = "arm,external-bus-interface"},
+ { },
+};
+
static void __init ap_init_of(void)
{
unsigned long sc_dec;
- struct device_node *root;
struct device_node *syscon;
+ struct device_node *ebi;
struct device *parent;
struct soc_device *soc_dev;
struct soc_device_attribute *soc_dev_attr;
u32 ap_sc_id;
- int err;
int i;
- /* Here we create an SoC device for the root node */
- root = of_find_node_by_path("/");
- if (!root)
- return;
-
- syscon = of_find_matching_node(root, ap_syscon_match);
+ syscon = of_find_matching_node(NULL, ap_syscon_match);
if (!syscon)
return;
+ ebi = of_find_matching_node(NULL, ebi_match);
+ if (!ebi)
+ return;
ap_syscon_base = of_iomap(syscon, 0);
if (!ap_syscon_base)
return;
+ ebi_base = of_iomap(ebi, 0);
+ if (!ebi_base)
+ return;
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ ap_auxdata_lookup, NULL);
ap_sc_id = readl(ap_syscon_base);
@@ -506,13 +511,8 @@ static void __init ap_init_of(void)
if (!soc_dev_attr)
return;
- err = of_property_read_string(root, "compatible",
- &soc_dev_attr->soc_id);
- if (err)
- return;
- err = of_property_read_string(root, "model", &soc_dev_attr->machine);
- if (err)
- return;
+ soc_dev_attr->soc_id = "XVC";
+ soc_dev_attr->machine = "Integrator/AP";
soc_dev_attr->family = "Integrator";
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c",
'A' + (ap_sc_id & 0x0f));
@@ -527,9 +527,6 @@ static void __init ap_init_of(void)
parent = soc_device_to_device(soc_dev);
integrator_init_sysfs(parent, ap_sc_id);
- of_platform_populate(root, of_default_bus_match_table,
- ap_auxdata_lookup, parent);
-
sc_dec = readl(ap_syscon_base + INTEGRATOR_SC_DEC_OFFSET);
for (i = 0; i < 4; i++) {
struct lm_device *lmdev;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-14 14:02:48 +0000