- Refactor resource allocation on the Exynos_mct driver without
functional changes (Marek Szyprowski) - Add imx8ulp compatible string for NPX TPM driver (Jacky Bai) - Fix comma introduced by error by replacing it by the initial semicolon on the Exynos_mct (Will Deacon) - Add OSTM driver support on Renesas. The reset line must be deasserted before accessing the registers. This change depends on an external change resulting in a shared immutable branch 'reset/of-get-optional-exclusive' from git://git.pengutronix.de/pza/linux (Biju Das) - Make the OSTM Kconfig option visible to user in order to let him disable it when ARM architected timers is enabled (Biju Das) - Tag two variables on iMX sysctr _ro_afterinit (Peng Fan) - Set the cpumask to cpu_possible_mask in order to have full benefit of the DYNIRQ flag on iMX sysctr (Peng Fan) - Tag __maybe_unused a variable in the Pistachio timer driver in order to fix a warning reported by the kernel test robot (Drew Fustini) - Add MStar MSC313e timer support and the ssd20xd-based variant, as well as the DT bindings (Romain Perier) - Remove the incompatible compatible string for the rk3066 (Johan Jonker) - Fix dts_check warnings on the cadence ttc driver by adding the power domain bindings (Michal Simek) -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEGn3N4YVz0WNVyHskqDIjiipP6E8FAmHEk0EACgkQqDIjiipP 6E98zwf+PJaoWPPn8vl0rqZqy3GiHfYD/78Fi+fMqDUaN7HbtkKCgJEX074z6B71 WvN3g2DfmkDDsbJ9BR4iSBuqRjfI3r701N4QCZgu8zPB2tqjMT7Coz18jBpTC+rt yPr5R8yrZZ3t6KduPhFbjD/15vPGO94BcKqC/UV4lL22G4PZOUuiXFMG/UR5/3O5 NmP5VqDjzKdY0tRc22aIuQm/QOQXmEPsP+XjQxkeXC8Er9Xr7QqfwJv+QTYMrvGF 4blsknsLJiW427vlYqg+iWme7mq7zxnlKJ+ugDz2pBS/E8lC32pnApW+o3HCqfP+ gmSiHvNaq2jhLTP8E8S1Gi09g6s/zQ== =0JsC -----END PGP SIGNATURE----- Merge tag 'timers-v5.17-rc1' of https://git.linaro.org/people/daniel.lezcano/linux into timers/core Pull clocksource/events updates from Daniel Lezcano: - Refactor resource allocation on the Exynos_mct driver without functional changes (Marek Szyprowski) - Add imx8ulp compatible string for NPX TPM driver (Jacky Bai) - Fix comma introduced by error by replacing it by the initial semicolon on the Exynos_mct (Will Deacon) - Add OSTM driver support on Renesas. The reset line must be deasserted before accessing the registers. This change depends on an external change resulting in a shared immutable branch 'reset/of-get-optional-exclusive' from git://git.pengutronix.de/pza/linux (Biju Das) - Make the OSTM Kconfig option visible to user in order to let him disable it when ARM architected timers is enabled (Biju Das) - Tag two variables on iMX sysctr _ro_afterinit (Peng Fan) - Set the cpumask to cpu_possible_mask in order to have full benefit of the DYNIRQ flag on iMX sysctr (Peng Fan) - Tag __maybe_unused a variable in the Pistachio timer driver in order to fix a warning reported by the kernel test robot (Drew Fustini) - Add MStar MSC313e timer support and the ssd20xd-based variant, as well as the DT bindings (Romain Perier) - Remove the incompatible compatible string for the rk3066 (Johan Jonker) - Fix dts_check warnings on the cadence ttc driver by adding the power domain bindings (Michal Simek) Link: https://lore.kernel.org/lkml/e093c706-c98d-29ee-0102-78b6d41c6164@linaro.org
This commit is contained in:
Thomas Gleixner
Коммит
6629c07699
|
|
@ -25,6 +25,9 @@ properties:
|
|||
clocks:
|
||||
maxItems: 1
|
||||
|
||||
power-domains:
|
||||
maxItems: 1
|
||||
|
||||
timer-width:
|
||||
$ref: "/schemas/types.yaml#/definitions/uint32"
|
||||
description: |
|
||||
|
|
|
|||
|
|
@ -0,0 +1,46 @@
|
|||
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/timer/mstar,msc313e-timer.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: Mstar MSC313e Timer Device Tree Bindings
|
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|
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maintainers:
|
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- Daniel Palmer <daniel@0x0f.com>
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- Romain Perier <romain.perier@gmail.com>
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|
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properties:
|
||||
compatible:
|
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enum:
|
||||
- mstar,msc313e-timer
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- sstar,ssd20xd-timer
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|
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reg:
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maxItems: 1
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||||
|
||||
interrupts:
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maxItems: 1
|
||||
|
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clocks:
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maxItems: 1
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||||
|
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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additionalProperties: false
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||||
|
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examples:
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||||
- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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timer@6040 {
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compatible = "mstar,msc313e-timer";
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reg = <0x6040 0x40>;
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clocks = <&xtal_div2>;
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interrupts-extended = <&intc_fiq GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
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};
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...
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|
|
@ -19,7 +19,11 @@ description: |
|
|||
|
||||
properties:
|
||||
compatible:
|
||||
const: fsl,imx7ulp-tpm
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oneOf:
|
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- const: fsl,imx7ulp-tpm
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||||
- items:
|
||||
- const: fsl,imx8ulp-tpm
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||||
- const: fsl,imx7ulp-tpm
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||||
|
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reg:
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maxItems: 1
|
||||
|
|
|
|||
|
|
@ -21,9 +21,10 @@ properties:
|
|||
compatible:
|
||||
items:
|
||||
- enum:
|
||||
- renesas,r7s72100-ostm # RZ/A1H
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||||
- renesas,r7s9210-ostm # RZ/A2M
|
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- const: renesas,ostm # Generic
|
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- renesas,r7s72100-ostm # RZ/A1H
|
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- renesas,r7s9210-ostm # RZ/A2M
|
||||
- renesas,r9a07g044-ostm # RZ/G2{L,LC}
|
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- const: renesas,ostm # Generic
|
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|
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reg:
|
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maxItems: 1
|
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|
|
@ -37,6 +38,9 @@ properties:
|
|||
power-domains:
|
||||
maxItems: 1
|
||||
|
||||
resets:
|
||||
maxItems: 1
|
||||
|
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required:
|
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- compatible
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- reg
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|
|
@ -44,6 +48,16 @@ required:
|
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- clocks
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- power-domains
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|
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if:
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properties:
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compatible:
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contains:
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enum:
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- renesas,r9a07g044-ostm
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then:
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required:
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- resets
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additionalProperties: false
|
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|
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examples:
|
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|
|
|
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|
|
@ -18,7 +18,6 @@ properties:
|
|||
- enum:
|
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- rockchip,rv1108-timer
|
||||
- rockchip,rk3036-timer
|
||||
- rockchip,rk3066-timer
|
||||
- rockchip,rk3188-timer
|
||||
- rockchip,rk3228-timer
|
||||
- rockchip,rk3229-timer
|
||||
|
|
|
|||
|
|
@ -2291,6 +2291,7 @@ F: Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml
|
|||
F: arch/arm/boot/dts/mstar-*
|
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F: arch/arm/mach-mstar/
|
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F: drivers/clk/mstar/
|
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F: drivers/clocksource/timer-msc313e.c
|
||||
F: drivers/gpio/gpio-msc313.c
|
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F: drivers/rtc/rtc-msc313.c
|
||||
F: drivers/watchdog/msc313e_wdt.c
|
||||
|
|
|
|||
|
|
@ -510,7 +510,8 @@ config SH_TIMER_MTU2
|
|||
This hardware comes with 16-bit timer registers.
|
||||
|
||||
config RENESAS_OSTM
|
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bool "Renesas OSTM timer driver" if COMPILE_TEST
|
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bool "Renesas OSTM timer driver"
|
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depends on ARCH_RENESAS || COMPILE_TEST
|
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select CLKSRC_MMIO
|
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select TIMER_OF
|
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help
|
||||
|
|
@ -671,6 +672,15 @@ config MILBEAUT_TIMER
|
|||
help
|
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Enables the support for Milbeaut timer driver.
|
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|
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config MSC313E_TIMER
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bool "MSC313E timer driver" if COMPILE_TEST
|
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select TIMER_OF
|
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select CLKSRC_MMIO
|
||||
help
|
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Enables support for the MStar MSC313E timer driver.
|
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This provides access to multiple interrupt generating
|
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programmable 32-bit free running incrementing counters.
|
||||
|
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config INGENIC_TIMER
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bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
|
||||
default MACH_INGENIC
|
||||
|
|
|
|||
|
|
@ -88,3 +88,4 @@ obj-$(CONFIG_CSKY_MP_TIMER) += timer-mp-csky.o
|
|||
obj-$(CONFIG_GX6605S_TIMER) += timer-gx6605s.o
|
||||
obj-$(CONFIG_HYPERV_TIMER) += hyperv_timer.o
|
||||
obj-$(CONFIG_MICROCHIP_PIT64B) += timer-microchip-pit64b.o
|
||||
obj-$(CONFIG_MSC313E_TIMER) += timer-msc313e.o
|
||||
|
|
|
|||
|
|
@ -467,7 +467,7 @@ static int exynos4_mct_starting_cpu(unsigned int cpu)
|
|||
evt->tick_resume = set_state_shutdown;
|
||||
evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT |
|
||||
CLOCK_EVT_FEAT_PERCPU;
|
||||
evt->rating = MCT_CLKEVENTS_RATING,
|
||||
evt->rating = MCT_CLKEVENTS_RATING;
|
||||
|
||||
exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET);
|
||||
|
||||
|
|
@ -504,11 +504,14 @@ static int exynos4_mct_dying_cpu(unsigned int cpu)
|
|||
return 0;
|
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}
|
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|
||||
static int __init exynos4_timer_resources(struct device_node *np, void __iomem *base)
|
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static int __init exynos4_timer_resources(struct device_node *np)
|
||||
{
|
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int err, cpu;
|
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struct clk *mct_clk, *tick_clk;
|
||||
|
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reg_base = of_iomap(np, 0);
|
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if (!reg_base)
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panic("%s: unable to ioremap mct address space\n", __func__);
|
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|
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tick_clk = of_clk_get_by_name(np, "fin_pll");
|
||||
if (IS_ERR(tick_clk))
|
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panic("%s: unable to determine tick clock rate\n", __func__);
|
||||
|
|
@ -519,9 +522,27 @@ static int __init exynos4_timer_resources(struct device_node *np, void __iomem *
|
|||
panic("%s: unable to retrieve mct clock instance\n", __func__);
|
||||
clk_prepare_enable(mct_clk);
|
||||
|
||||
reg_base = base;
|
||||
if (!reg_base)
|
||||
panic("%s: unable to ioremap mct address space\n", __func__);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init exynos4_timer_interrupts(struct device_node *np,
|
||||
unsigned int int_type)
|
||||
{
|
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int nr_irqs, i, err, cpu;
|
||||
|
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mct_int_type = int_type;
|
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|
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/* This driver uses only one global timer interrupt */
|
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mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
|
||||
|
||||
/*
|
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* Find out the number of local irqs specified. The local
|
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* timer irqs are specified after the four global timer
|
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* irqs are specified.
|
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*/
|
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nr_irqs = of_irq_count(np);
|
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for (i = MCT_L0_IRQ; i < nr_irqs; i++)
|
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mct_irqs[i] = irq_of_parse_and_map(np, i);
|
||||
|
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if (mct_int_type == MCT_INT_PPI) {
|
||||
|
||||
|
|
@ -581,24 +602,13 @@ out_irq:
|
|||
|
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static int __init mct_init_dt(struct device_node *np, unsigned int int_type)
|
||||
{
|
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u32 nr_irqs, i;
|
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int ret;
|
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|
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mct_int_type = int_type;
|
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ret = exynos4_timer_resources(np);
|
||||
if (ret)
|
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return ret;
|
||||
|
||||
/* This driver uses only one global timer interrupt */
|
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mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
|
||||
|
||||
/*
|
||||
* Find out the number of local irqs specified. The local
|
||||
* timer irqs are specified after the four global timer
|
||||
* irqs are specified.
|
||||
*/
|
||||
nr_irqs = of_irq_count(np);
|
||||
for (i = MCT_L0_IRQ; i < nr_irqs; i++)
|
||||
mct_irqs[i] = irq_of_parse_and_map(np, i);
|
||||
|
||||
ret = exynos4_timer_resources(np, of_iomap(np, 0));
|
||||
ret = exynos4_timer_interrupts(np, int_type);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
|
|
|
|||
|
|
@ -9,6 +9,8 @@
|
|||
#include <linux/clk.h>
|
||||
#include <linux/clockchips.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/reset.h>
|
||||
#include <linux/sched_clock.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
|
|
@ -159,6 +161,7 @@ static int __init ostm_init_clkevt(struct timer_of *to)
|
|||
|
||||
static int __init ostm_init(struct device_node *np)
|
||||
{
|
||||
struct reset_control *rstc;
|
||||
struct timer_of *to;
|
||||
int ret;
|
||||
|
||||
|
|
@ -166,6 +169,14 @@ static int __init ostm_init(struct device_node *np)
|
|||
if (!to)
|
||||
return -ENOMEM;
|
||||
|
||||
rstc = of_reset_control_get_optional_exclusive(np, NULL);
|
||||
if (IS_ERR(rstc)) {
|
||||
ret = PTR_ERR(rstc);
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
reset_control_deassert(rstc);
|
||||
|
||||
to->flags = TIMER_OF_BASE | TIMER_OF_CLOCK;
|
||||
if (system_clock) {
|
||||
/*
|
||||
|
|
@ -178,7 +189,7 @@ static int __init ostm_init(struct device_node *np)
|
|||
|
||||
ret = timer_of_init(np, to);
|
||||
if (ret)
|
||||
goto err_free;
|
||||
goto err_reset;
|
||||
|
||||
/*
|
||||
* First probed device will be used as system clocksource. Any
|
||||
|
|
@ -203,9 +214,35 @@ static int __init ostm_init(struct device_node *np)
|
|||
|
||||
err_cleanup:
|
||||
timer_of_cleanup(to);
|
||||
err_reset:
|
||||
reset_control_assert(rstc);
|
||||
reset_control_put(rstc);
|
||||
err_free:
|
||||
kfree(to);
|
||||
return ret;
|
||||
}
|
||||
|
||||
TIMER_OF_DECLARE(ostm, "renesas,ostm", ostm_init);
|
||||
|
||||
#ifdef CONFIG_ARCH_R9A07G044
|
||||
static int __init ostm_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
|
||||
return ostm_init(dev->of_node);
|
||||
}
|
||||
|
||||
static const struct of_device_id ostm_of_table[] = {
|
||||
{ .compatible = "renesas,ostm", },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
|
||||
static struct platform_driver ostm_device_driver = {
|
||||
.driver = {
|
||||
.name = "renesas_ostm",
|
||||
.of_match_table = of_match_ptr(ostm_of_table),
|
||||
.suppress_bind_attrs = true,
|
||||
},
|
||||
};
|
||||
builtin_platform_driver_probe(ostm_device_driver, ostm_probe);
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -20,8 +20,8 @@
|
|||
|
||||
#define SYS_CTR_CLK_DIV 0x3
|
||||
|
||||
static void __iomem *sys_ctr_base;
|
||||
static u32 cmpcr;
|
||||
static void __iomem *sys_ctr_base __ro_after_init;
|
||||
static u32 cmpcr __ro_after_init;
|
||||
|
||||
static void sysctr_timer_enable(bool enable)
|
||||
{
|
||||
|
|
@ -119,7 +119,7 @@ static struct timer_of to_sysctr = {
|
|||
|
||||
static void __init sysctr_clockevent_init(void)
|
||||
{
|
||||
to_sysctr.clkevt.cpumask = cpumask_of(0);
|
||||
to_sysctr.clkevt.cpumask = cpu_possible_mask;
|
||||
|
||||
clockevents_config_and_register(&to_sysctr.clkevt,
|
||||
timer_of_rate(&to_sysctr),
|
||||
|
|
|
|||
|
|
@ -0,0 +1,253 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* MStar timer driver
|
||||
*
|
||||
* Copyright (C) 2021 Daniel Palmer
|
||||
* Copyright (C) 2021 Romain Perier
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/clockchips.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/irqreturn.h>
|
||||
#include <linux/sched_clock.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/of_address.h>
|
||||
#include <linux/of_irq.h>
|
||||
|
||||
#ifdef CONFIG_ARM
|
||||
#include <linux/delay.h>
|
||||
#endif
|
||||
|
||||
#include "timer-of.h"
|
||||
|
||||
#define TIMER_NAME "msc313e_timer"
|
||||
|
||||
#define MSC313E_REG_CTRL 0x00
|
||||
#define MSC313E_REG_CTRL_TIMER_EN BIT(0)
|
||||
#define MSC313E_REG_CTRL_TIMER_TRIG BIT(1)
|
||||
#define MSC313E_REG_CTRL_TIMER_INT_EN BIT(8)
|
||||
#define MSC313E_REG_TIMER_MAX_LOW 0x08
|
||||
#define MSC313E_REG_TIMER_MAX_HIGH 0x0c
|
||||
#define MSC313E_REG_COUNTER_LOW 0x10
|
||||
#define MSC313E_REG_COUNTER_HIGH 0x14
|
||||
#define MSC313E_REG_TIMER_DIVIDE 0x18
|
||||
|
||||
#define MSC313E_CLK_DIVIDER 9
|
||||
#define TIMER_SYNC_TICKS 3
|
||||
|
||||
#ifdef CONFIG_ARM
|
||||
struct msc313e_delay {
|
||||
void __iomem *base;
|
||||
struct delay_timer delay;
|
||||
};
|
||||
static struct msc313e_delay msc313e_delay;
|
||||
#endif
|
||||
|
||||
static void __iomem *msc313e_clksrc;
|
||||
|
||||
static void msc313e_timer_stop(void __iomem *base)
|
||||
{
|
||||
writew(0, base + MSC313E_REG_CTRL);
|
||||
}
|
||||
|
||||
static void msc313e_timer_start(void __iomem *base, bool periodic)
|
||||
{
|
||||
u16 reg;
|
||||
|
||||
reg = readw(base + MSC313E_REG_CTRL);
|
||||
if (periodic)
|
||||
reg |= MSC313E_REG_CTRL_TIMER_EN;
|
||||
else
|
||||
reg |= MSC313E_REG_CTRL_TIMER_TRIG;
|
||||
writew(reg | MSC313E_REG_CTRL_TIMER_INT_EN, base + MSC313E_REG_CTRL);
|
||||
}
|
||||
|
||||
static void msc313e_timer_setup(void __iomem *base, unsigned long delay)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
local_irq_save(flags);
|
||||
writew(delay >> 16, base + MSC313E_REG_TIMER_MAX_HIGH);
|
||||
writew(delay & 0xffff, base + MSC313E_REG_TIMER_MAX_LOW);
|
||||
local_irq_restore(flags);
|
||||
}
|
||||
|
||||
static unsigned long msc313e_timer_current_value(void __iomem *base)
|
||||
{
|
||||
unsigned long flags;
|
||||
u16 l, h;
|
||||
|
||||
local_irq_save(flags);
|
||||
l = readw(base + MSC313E_REG_COUNTER_LOW);
|
||||
h = readw(base + MSC313E_REG_COUNTER_HIGH);
|
||||
local_irq_restore(flags);
|
||||
|
||||
return (((u32)h) << 16 | l);
|
||||
}
|
||||
|
||||
static int msc313e_timer_clkevt_shutdown(struct clock_event_device *evt)
|
||||
{
|
||||
struct timer_of *timer = to_timer_of(evt);
|
||||
|
||||
msc313e_timer_stop(timer_of_base(timer));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int msc313e_timer_clkevt_set_oneshot(struct clock_event_device *evt)
|
||||
{
|
||||
struct timer_of *timer = to_timer_of(evt);
|
||||
|
||||
msc313e_timer_stop(timer_of_base(timer));
|
||||
msc313e_timer_start(timer_of_base(timer), false);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int msc313e_timer_clkevt_set_periodic(struct clock_event_device *evt)
|
||||
{
|
||||
struct timer_of *timer = to_timer_of(evt);
|
||||
|
||||
msc313e_timer_stop(timer_of_base(timer));
|
||||
msc313e_timer_setup(timer_of_base(timer), timer_of_period(timer));
|
||||
msc313e_timer_start(timer_of_base(timer), true);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int msc313e_timer_clkevt_next_event(unsigned long evt, struct clock_event_device *clkevt)
|
||||
{
|
||||
struct timer_of *timer = to_timer_of(clkevt);
|
||||
|
||||
msc313e_timer_stop(timer_of_base(timer));
|
||||
msc313e_timer_setup(timer_of_base(timer), evt);
|
||||
msc313e_timer_start(timer_of_base(timer), false);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static irqreturn_t msc313e_timer_clkevt_irq(int irq, void *dev_id)
|
||||
{
|
||||
struct clock_event_device *evt = dev_id;
|
||||
|
||||
evt->event_handler(evt);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static u64 msc313e_timer_clksrc_read(struct clocksource *cs)
|
||||
{
|
||||
return msc313e_timer_current_value(msc313e_clksrc) & cs->mask;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ARM
|
||||
static unsigned long msc313e_read_delay_timer_read(void)
|
||||
{
|
||||
return msc313e_timer_current_value(msc313e_delay.base);
|
||||
}
|
||||
#endif
|
||||
|
||||
static u64 msc313e_timer_sched_clock_read(void)
|
||||
{
|
||||
return msc313e_timer_current_value(msc313e_clksrc);
|
||||
}
|
||||
|
||||
static struct clock_event_device msc313e_clkevt = {
|
||||
.name = TIMER_NAME,
|
||||
.rating = 300,
|
||||
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
|
||||
.set_state_shutdown = msc313e_timer_clkevt_shutdown,
|
||||
.set_state_periodic = msc313e_timer_clkevt_set_periodic,
|
||||
.set_state_oneshot = msc313e_timer_clkevt_set_oneshot,
|
||||
.tick_resume = msc313e_timer_clkevt_shutdown,
|
||||
.set_next_event = msc313e_timer_clkevt_next_event,
|
||||
};
|
||||
|
||||
static int __init msc313e_clkevt_init(struct device_node *np)
|
||||
{
|
||||
int ret;
|
||||
struct timer_of *to;
|
||||
|
||||
to = kzalloc(sizeof(*to), GFP_KERNEL);
|
||||
if (!to)
|
||||
return -ENOMEM;
|
||||
|
||||
to->flags = TIMER_OF_IRQ | TIMER_OF_CLOCK | TIMER_OF_BASE;
|
||||
to->of_irq.handler = msc313e_timer_clkevt_irq;
|
||||
ret = timer_of_init(np, to);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (of_device_is_compatible(np, "sstar,ssd20xd-timer")) {
|
||||
to->of_clk.rate = clk_get_rate(to->of_clk.clk) / MSC313E_CLK_DIVIDER;
|
||||
to->of_clk.period = DIV_ROUND_UP(to->of_clk.rate, HZ);
|
||||
writew(MSC313E_CLK_DIVIDER - 1, timer_of_base(to) + MSC313E_REG_TIMER_DIVIDE);
|
||||
}
|
||||
|
||||
msc313e_clkevt.cpumask = cpu_possible_mask;
|
||||
msc313e_clkevt.irq = to->of_irq.irq;
|
||||
to->clkevt = msc313e_clkevt;
|
||||
|
||||
clockevents_config_and_register(&to->clkevt, timer_of_rate(to),
|
||||
TIMER_SYNC_TICKS, 0xffffffff);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init msc313e_clksrc_init(struct device_node *np)
|
||||
{
|
||||
struct timer_of to = { 0 };
|
||||
int ret;
|
||||
u16 reg;
|
||||
|
||||
to.flags = TIMER_OF_BASE | TIMER_OF_CLOCK;
|
||||
ret = timer_of_init(np, &to);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
msc313e_clksrc = timer_of_base(&to);
|
||||
reg = readw(msc313e_clksrc + MSC313E_REG_CTRL);
|
||||
reg |= MSC313E_REG_CTRL_TIMER_EN;
|
||||
writew(reg, msc313e_clksrc + MSC313E_REG_CTRL);
|
||||
|
||||
#ifdef CONFIG_ARM
|
||||
msc313e_delay.base = timer_of_base(&to);
|
||||
msc313e_delay.delay.read_current_timer = msc313e_read_delay_timer_read;
|
||||
msc313e_delay.delay.freq = timer_of_rate(&to);
|
||||
|
||||
register_current_timer_delay(&msc313e_delay.delay);
|
||||
#endif
|
||||
|
||||
sched_clock_register(msc313e_timer_sched_clock_read, 32, timer_of_rate(&to));
|
||||
return clocksource_mmio_init(timer_of_base(&to), TIMER_NAME, timer_of_rate(&to), 300, 32,
|
||||
msc313e_timer_clksrc_read);
|
||||
}
|
||||
|
||||
static int __init msc313e_timer_init(struct device_node *np)
|
||||
{
|
||||
int ret = 0;
|
||||
static int num_called;
|
||||
|
||||
switch (num_called) {
|
||||
case 0:
|
||||
ret = msc313e_clksrc_init(np);
|
||||
if (ret)
|
||||
return ret;
|
||||
break;
|
||||
|
||||
default:
|
||||
ret = msc313e_clkevt_init(np);
|
||||
if (ret)
|
||||
return ret;
|
||||
break;
|
||||
}
|
||||
|
||||
num_called++;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
TIMER_OF_DECLARE(msc313, "mstar,msc313e-timer", msc313e_timer_init);
|
||||
TIMER_OF_DECLARE(ssd20xd, "sstar,ssd20xd-timer", msc313e_timer_init);
|
||||
|
|
@ -71,7 +71,8 @@ static u64 notrace
|
|||
pistachio_clocksource_read_cycles(struct clocksource *cs)
|
||||
{
|
||||
struct pistachio_clocksource *pcs = to_pistachio_clocksource(cs);
|
||||
u32 counter, overflow;
|
||||
__maybe_unused u32 overflow;
|
||||
u32 counter;
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -454,6 +454,26 @@ static inline struct reset_control *of_reset_control_get_exclusive(
|
|||
return __of_reset_control_get(node, id, 0, false, false, true);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_reset_control_get_optional_exclusive - Lookup and obtain an optional exclusive
|
||||
* reference to a reset controller.
|
||||
* @node: device to be reset by the controller
|
||||
* @id: reset line name
|
||||
*
|
||||
* Optional variant of of_reset_control_get_exclusive(). If the requested reset
|
||||
* is not specified in the device tree, this function returns NULL instead of
|
||||
* an error.
|
||||
*
|
||||
* Returns a struct reset_control or IS_ERR() condition containing errno.
|
||||
*
|
||||
* Use of id names is optional.
|
||||
*/
|
||||
static inline struct reset_control *of_reset_control_get_optional_exclusive(
|
||||
struct device_node *node, const char *id)
|
||||
{
|
||||
return __of_reset_control_get(node, id, 0, false, true, true);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_reset_control_get_shared - Lookup and obtain a shared reference
|
||||
* to a reset controller.
|
||||
|
|
|
|||
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