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-rw-r--r--arch/arm/mach-zynq/common.c29
-rw-r--r--arch/arm/mach-zynq/common.h2
-rw-r--r--arch/arm/mach-zynq/timer.c150
3 files changed, 76 insertions, 105 deletions
diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index e16d4bed0f7a..5c8983218183 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -24,6 +24,7 @@
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/of.h>
+#include <linux/irqchip.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -31,7 +32,6 @@
#include <asm/mach-types.h>
#include <asm/page.h>
#include <asm/pgtable.h>
-#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include "common.h"
@@ -55,19 +55,6 @@ static void __init xilinx_init_machine(void)
of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL);
}
-static struct of_device_id irq_match[] __initdata = {
- { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
- { }
-};
-
-/**
- * xilinx_irq_init() - Interrupt controller initialization for the GIC.
- */
-static void __init xilinx_irq_init(void)
-{
- of_irq_init(irq_match);
-}
-
#define SCU_PERIPH_PHYS 0xF8F00000
#define SCU_PERIPH_SIZE SZ_8K
#define SCU_PERIPH_VIRT (VMALLOC_END - SCU_PERIPH_SIZE)
@@ -90,16 +77,9 @@ static void __init xilinx_zynq_timer_init(void)
xilinx_zynq_clocks_init(slcr);
- xttcpss_timer_init();
+ xttcps_timer_init();
}
-/*
- * Instantiate and initialize the system timer structure
- */
-static struct sys_timer xttcpss_sys_timer = {
- .init = xilinx_zynq_timer_init,
-};
-
/**
* xilinx_map_io() - Create memory mappings needed for early I/O.
*/
@@ -117,9 +97,8 @@ static const char *xilinx_dt_match[] = {
MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
.map_io = xilinx_map_io,
- .init_irq = xilinx_irq_init,
- .handle_irq = gic_handle_irq,
+ .init_irq = irqchip_init,
.init_machine = xilinx_init_machine,
- .timer = &xttcpss_sys_timer,
+ .init_time = xilinx_zynq_timer_init,
.dt_compat = xilinx_dt_match,
MACHINE_END
diff --git a/arch/arm/mach-zynq/common.h b/arch/arm/mach-zynq/common.h
index 954b91c13c91..8b4dbbaa01cf 100644
--- a/arch/arm/mach-zynq/common.h
+++ b/arch/arm/mach-zynq/common.h
@@ -17,6 +17,6 @@
#ifndef __MACH_ZYNQ_COMMON_H__
#define __MACH_ZYNQ_COMMON_H__
-void __init xttcpss_timer_init(void);
+void __init xttcps_timer_init(void);
#endif
diff --git a/arch/arm/mach-zynq/timer.c b/arch/arm/mach-zynq/timer.c
index de3df283da74..f9fbc9c1e7a6 100644
--- a/arch/arm/mach-zynq/timer.c
+++ b/arch/arm/mach-zynq/timer.c
@@ -15,39 +15,29 @@
* GNU General Public License for more details.
*/
-#include <linux/kernel.h>
-#include <linux/init.h>
#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/types.h>
-#include <linux/clocksource.h>
#include <linux/clockchips.h>
-#include <linux/io.h>
-#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/slab.h>
#include <linux/clk-provider.h>
-
#include "common.h"
/*
* Timer Register Offset Definitions of Timer 1, Increment base address by 4
* and use same offsets for Timer 2
*/
-#define XTTCPSS_CLK_CNTRL_OFFSET 0x00 /* Clock Control Reg, RW */
-#define XTTCPSS_CNT_CNTRL_OFFSET 0x0C /* Counter Control Reg, RW */
-#define XTTCPSS_COUNT_VAL_OFFSET 0x18 /* Counter Value Reg, RO */
-#define XTTCPSS_INTR_VAL_OFFSET 0x24 /* Interval Count Reg, RW */
-#define XTTCPSS_MATCH_1_OFFSET 0x30 /* Match 1 Value Reg, RW */
-#define XTTCPSS_MATCH_2_OFFSET 0x3C /* Match 2 Value Reg, RW */
-#define XTTCPSS_MATCH_3_OFFSET 0x48 /* Match 3 Value Reg, RW */
-#define XTTCPSS_ISR_OFFSET 0x54 /* Interrupt Status Reg, RO */
-#define XTTCPSS_IER_OFFSET 0x60 /* Interrupt Enable Reg, RW */
-
-#define XTTCPSS_CNT_CNTRL_DISABLE_MASK 0x1
-
-/* Setup the timers to use pre-scaling, using a fixed value for now that will
+#define XTTCPS_CLK_CNTRL_OFFSET 0x00 /* Clock Control Reg, RW */
+#define XTTCPS_CNT_CNTRL_OFFSET 0x0C /* Counter Control Reg, RW */
+#define XTTCPS_COUNT_VAL_OFFSET 0x18 /* Counter Value Reg, RO */
+#define XTTCPS_INTR_VAL_OFFSET 0x24 /* Interval Count Reg, RW */
+#define XTTCPS_ISR_OFFSET 0x54 /* Interrupt Status Reg, RO */
+#define XTTCPS_IER_OFFSET 0x60 /* Interrupt Enable Reg, RW */
+
+#define XTTCPS_CNT_CNTRL_DISABLE_MASK 0x1
+
+/*
+ * Setup the timers to use pre-scaling, using a fixed value for now that will
* work across most input frequency, but it may need to be more dynamic
*/
#define PRESCALE_EXPONENT 11 /* 2 ^ PRESCALE_EXPONENT = PRESCALE */
@@ -57,72 +47,73 @@
#define CNT_CNTRL_RESET (1<<4)
/**
- * struct xttcpss_timer - This definition defines local timer structure
+ * struct xttcps_timer - This definition defines local timer structure
*
* @base_addr: Base address of timer
**/
-struct xttcpss_timer {
+struct xttcps_timer {
void __iomem *base_addr;
};
-struct xttcpss_timer_clocksource {
- struct xttcpss_timer xttc;
+struct xttcps_timer_clocksource {
+ struct xttcps_timer xttc;
struct clocksource cs;
};
-#define to_xttcpss_timer_clksrc(x) \
- container_of(x, struct xttcpss_timer_clocksource, cs)
+#define to_xttcps_timer_clksrc(x) \
+ container_of(x, struct xttcps_timer_clocksource, cs)
-struct xttcpss_timer_clockevent {
- struct xttcpss_timer xttc;
+struct xttcps_timer_clockevent {
+ struct xttcps_timer xttc;
struct clock_event_device ce;
struct clk *clk;
};
-#define to_xttcpss_timer_clkevent(x) \
- container_of(x, struct xttcpss_timer_clockevent, ce)
+#define to_xttcps_timer_clkevent(x) \
+ container_of(x, struct xttcps_timer_clockevent, ce)
/**
- * xttcpss_set_interval - Set the timer interval value
+ * xttcps_set_interval - Set the timer interval value
*
* @timer: Pointer to the timer instance
* @cycles: Timer interval ticks
**/
-static void xttcpss_set_interval(struct xttcpss_timer *timer,
+static void xttcps_set_interval(struct xttcps_timer *timer,
unsigned long cycles)
{
u32 ctrl_reg;
/* Disable the counter, set the counter value and re-enable counter */
- ctrl_reg = __raw_readl(timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
- ctrl_reg |= XTTCPSS_CNT_CNTRL_DISABLE_MASK;
- __raw_writel(ctrl_reg, timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+ ctrl_reg = __raw_readl(timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
+ ctrl_reg |= XTTCPS_CNT_CNTRL_DISABLE_MASK;
+ __raw_writel(ctrl_reg, timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
- __raw_writel(cycles, timer->base_addr + XTTCPSS_INTR_VAL_OFFSET);
+ __raw_writel(cycles, timer->base_addr + XTTCPS_INTR_VAL_OFFSET);
- /* Reset the counter (0x10) so that it starts from 0, one-shot
- mode makes this needed for timing to be right. */
+ /*
+ * Reset the counter (0x10) so that it starts from 0, one-shot
+ * mode makes this needed for timing to be right.
+ */
ctrl_reg |= CNT_CNTRL_RESET;
- ctrl_reg &= ~XTTCPSS_CNT_CNTRL_DISABLE_MASK;
- __raw_writel(ctrl_reg, timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+ ctrl_reg &= ~XTTCPS_CNT_CNTRL_DISABLE_MASK;
+ __raw_writel(ctrl_reg, timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
}
/**
- * xttcpss_clock_event_interrupt - Clock event timer interrupt handler
+ * xttcps_clock_event_interrupt - Clock event timer interrupt handler
*
* @irq: IRQ number of the Timer
- * @dev_id: void pointer to the xttcpss_timer instance
+ * @dev_id: void pointer to the xttcps_timer instance
*
* returns: Always IRQ_HANDLED - success
**/
-static irqreturn_t xttcpss_clock_event_interrupt(int irq, void *dev_id)
+static irqreturn_t xttcps_clock_event_interrupt(int irq, void *dev_id)
{
- struct xttcpss_timer_clockevent *xttce = dev_id;
- struct xttcpss_timer *timer = &xttce->xttc;
+ struct xttcps_timer_clockevent *xttce = dev_id;
+ struct xttcps_timer *timer = &xttce->xttc;
/* Acknowledge the interrupt and call event handler */
- __raw_writel(__raw_readl(timer->base_addr + XTTCPSS_ISR_OFFSET),
- timer->base_addr + XTTCPSS_ISR_OFFSET);
+ __raw_readl(timer->base_addr + XTTCPS_ISR_OFFSET);
xttce->ce.event_handler(&xttce->ce);
@@ -136,46 +127,46 @@ static irqreturn_t xttcpss_clock_event_interrupt(int irq, void *dev_id)
**/
static cycle_t __xttc_clocksource_read(struct clocksource *cs)
{
- struct xttcpss_timer *timer = &to_xttcpss_timer_clksrc(cs)->xttc;
+ struct xttcps_timer *timer = &to_xttcps_timer_clksrc(cs)->xttc;
return (cycle_t)__raw_readl(timer->base_addr +
- XTTCPSS_COUNT_VAL_OFFSET);
+ XTTCPS_COUNT_VAL_OFFSET);
}
/**
- * xttcpss_set_next_event - Sets the time interval for next event
+ * xttcps_set_next_event - Sets the time interval for next event
*
* @cycles: Timer interval ticks
* @evt: Address of clock event instance
*
* returns: Always 0 - success
**/
-static int xttcpss_set_next_event(unsigned long cycles,
+static int xttcps_set_next_event(unsigned long cycles,
struct clock_event_device *evt)
{
- struct xttcpss_timer_clockevent *xttce = to_xttcpss_timer_clkevent(evt);
- struct xttcpss_timer *timer = &xttce->xttc;
+ struct xttcps_timer_clockevent *xttce = to_xttcps_timer_clkevent(evt);
+ struct xttcps_timer *timer = &xttce->xttc;
- xttcpss_set_interval(timer, cycles);
+ xttcps_set_interval(timer, cycles);
return 0;
}
/**
- * xttcpss_set_mode - Sets the mode of timer
+ * xttcps_set_mode - Sets the mode of timer
*
* @mode: Mode to be set
* @evt: Address of clock event instance
**/
-static void xttcpss_set_mode(enum clock_event_mode mode,
+static void xttcps_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
{
- struct xttcpss_timer_clockevent *xttce = to_xttcpss_timer_clkevent(evt);
- struct xttcpss_timer *timer = &xttce->xttc;
+ struct xttcps_timer_clockevent *xttce = to_xttcps_timer_clkevent(evt);
+ struct xttcps_timer *timer = &xttce->xttc;
u32 ctrl_reg;
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
- xttcpss_set_interval(timer,
+ xttcps_set_interval(timer,
DIV_ROUND_CLOSEST(clk_get_rate(xttce->clk),
PRESCALE * HZ));
break;
@@ -183,17 +174,17 @@ static void xttcpss_set_mode(enum clock_event_mode mode,
case CLOCK_EVT_MODE_UNUSED:
case CLOCK_EVT_MODE_SHUTDOWN:
ctrl_reg = __raw_readl(timer->base_addr +
- XTTCPSS_CNT_CNTRL_OFFSET);
- ctrl_reg |= XTTCPSS_CNT_CNTRL_DISABLE_MASK;
+ XTTCPS_CNT_CNTRL_OFFSET);
+ ctrl_reg |= XTTCPS_CNT_CNTRL_DISABLE_MASK;
__raw_writel(ctrl_reg,
- timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+ timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
break;
case CLOCK_EVT_MODE_RESUME:
ctrl_reg = __raw_readl(timer->base_addr +
- XTTCPSS_CNT_CNTRL_OFFSET);
- ctrl_reg &= ~XTTCPSS_CNT_CNTRL_DISABLE_MASK;
+ XTTCPS_CNT_CNTRL_OFFSET);
+ ctrl_reg &= ~XTTCPS_CNT_CNTRL_DISABLE_MASK;
__raw_writel(ctrl_reg,
- timer->base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+ timer->base_addr + XTTCPS_CNT_CNTRL_OFFSET);
break;
}
}
@@ -201,7 +192,7 @@ static void xttcpss_set_mode(enum clock_event_mode mode,
static void __init zynq_ttc_setup_clocksource(struct device_node *np,
void __iomem *base)
{
- struct xttcpss_timer_clocksource *ttccs;
+ struct xttcps_timer_clocksource *ttccs;
struct clk *clk;
int err;
u32 reg;
@@ -230,11 +221,11 @@ static void __init zynq_ttc_setup_clocksource(struct device_node *np,
ttccs->cs.mask = CLOCKSOURCE_MASK(16);
ttccs->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS;
- __raw_writel(0x0, ttccs->xttc.base_addr + XTTCPSS_IER_OFFSET);
+ __raw_writel(0x0, ttccs->xttc.base_addr + XTTCPS_IER_OFFSET);
__raw_writel(CLK_CNTRL_PRESCALE | CLK_CNTRL_PRESCALE_EN,
- ttccs->xttc.base_addr + XTTCPSS_CLK_CNTRL_OFFSET);
+ ttccs->xttc.base_addr + XTTCPS_CLK_CNTRL_OFFSET);
__raw_writel(CNT_CNTRL_RESET,
- ttccs->xttc.base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+ ttccs->xttc.base_addr + XTTCPS_CNT_CNTRL_OFFSET);
err = clocksource_register_hz(&ttccs->cs, clk_get_rate(clk) / PRESCALE);
if (WARN_ON(err))
@@ -244,7 +235,7 @@ static void __init zynq_ttc_setup_clocksource(struct device_node *np,
static void __init zynq_ttc_setup_clockevent(struct device_node *np,
void __iomem *base)
{
- struct xttcpss_timer_clockevent *ttcce;
+ struct xttcps_timer_clockevent *ttcce;
int err, irq;
u32 reg;
@@ -272,17 +263,18 @@ static void __init zynq_ttc_setup_clockevent(struct device_node *np,
ttcce->ce.name = np->name;
ttcce->ce.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT;
- ttcce->ce.set_next_event = xttcpss_set_next_event;
- ttcce->ce.set_mode = xttcpss_set_mode;
+ ttcce->ce.set_next_event = xttcps_set_next_event;
+ ttcce->ce.set_mode = xttcps_set_mode;
ttcce->ce.rating = 200;
ttcce->ce.irq = irq;
+ ttcce->ce.cpumask = cpu_possible_mask;
- __raw_writel(0x23, ttcce->xttc.base_addr + XTTCPSS_CNT_CNTRL_OFFSET);
+ __raw_writel(0x23, ttcce->xttc.base_addr + XTTCPS_CNT_CNTRL_OFFSET);
__raw_writel(CLK_CNTRL_PRESCALE | CLK_CNTRL_PRESCALE_EN,
- ttcce->xttc.base_addr + XTTCPSS_CLK_CNTRL_OFFSET);
- __raw_writel(0x1, ttcce->xttc.base_addr + XTTCPSS_IER_OFFSET);
+ ttcce->xttc.base_addr + XTTCPS_CLK_CNTRL_OFFSET);
+ __raw_writel(0x1, ttcce->xttc.base_addr + XTTCPS_IER_OFFSET);
- err = request_irq(irq, xttcpss_clock_event_interrupt, IRQF_TIMER,
+ err = request_irq(irq, xttcps_clock_event_interrupt, IRQF_TIMER,
np->name, ttcce);
if (WARN_ON(err))
return;
@@ -301,12 +293,12 @@ static const __initconst struct of_device_id zynq_ttc_match[] = {
};
/**
- * xttcpss_timer_init - Initialize the timer
+ * xttcps_timer_init - Initialize the timer
*
* Initializes the timer hardware and register the clock source and clock event
* timers with Linux kernal timer framework
**/
-void __init xttcpss_timer_init(void)
+void __init xttcps_timer_init(void)
{
struct device_node *np;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.