Reset controller changes for v4.8, part 3
- change request API to be more explicit about the difference between exclusive and shared resets (the former guarantee the reset line is asserted immediately when reset_control_assert is called, the latter are refcounted and do not guarantee this). - add Hisilicon hi6220 media subsystem reset controller support - add TI SYSCON based reset controller support -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJXdEKmAAoJEFDCiBxwnmDr0qUQAK7zmAATBcgGp/ipvkEajNzp oTnxTC8kpGJ1oG0rQzXVDHImcOGxsLaV2CwEx5KLRyTkMvTRWroCrmpspmwpFgbg P9CY2HBim7TJzEKG3Z7qJ5cymvGeS4aDFWHZ97Il26/ElGcXqnNRlI8jmYEBuAQD GiW3Q1mzxp/fsr0vjIn8JE/j4T4kUrs2A1TSv4AjlBtDp1eHdDzWq1l11TvH9GTO fpSOMEPxfU+KPN4Bdu0ZrxQan8wlCFr+YBvkXzaJRZv1bjRYOqgqhYnprM0VT62J KZkkrDUzZ/QweOhH4bFr0REddWGGnj9NZ7rmaAYLi6iTy9vHv8AwFuST3J+bmCuu soOzx+HTLJuYnOtb4dg7KQRqLik04V3oNKqdeuCxeh+nRpOjssb1HeycN7tcrIPb 6Io4amMYP3S81B3LZIXVh/zxUxHmPudtKeiDl7YEaZR9/oY7LIh1DSlysBru9+OQ bX+lxOzUdNaXBZAt/9MHC4Z6GDe0/xr7G6v1cQjRSzwX6HC8PPY3fgnyB04CfUZK srnLI+ZzxOjEqEaqJ3/ekJRZQ3dLUIB1NibrUF4U7JPTwkM/509jyOUwOb9CsPuP 5P6x/ufpVHFGZvHc1LIk1GKwUi+Zh0VQbFwGCaVn7UdIenw5rURiWS9/Bv/VhtB7 bbfx0gRGzvgIfs1esRPS =5bzt -----END PGP SIGNATURE----- Merge tag 'reset-for-4.8-3' of git://git.pengutronix.de/git/pza/linux into next/drivers Merge "Reset controller changes for v4.8, part 3" from Philipp Zabel: - change request API to be more explicit about the difference between exclusive and shared resets (the former guarantee the reset line is asserted immediately when reset_control_assert is called, the latter are refcounted and do not guarantee this). - add Hisilicon hi6220 media subsystem reset controller support - add TI SYSCON based reset controller support * tag 'reset-for-4.8-3' of git://git.pengutronix.de/git/pza/linux: reset: add TI SYSCON based reset driver Documentation: dt: reset: Add TI syscon reset binding reset: hisilicon: Add hi6220 media subsystem reset support reset: hisilicon: Change to syscon register access arm64: dts: hi6220: Add media subsystem reset dts reset: hisilicon: Add media reset controller binding reset: TRIVIAL: Add line break at same place for similar APIs reset: Supply *_shared variant calls when using *_optional APIs reset: Supply *_shared variant calls when using of_* API reset: Ensure drivers are explicit when requesting reset lines reset: Reorder inline reset_control_get*() wrappers
This commit is contained in:
Arnd Bergmann
commit
7dccd2ec96
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@ -8,7 +8,9 @@ The reset controller registers are part of the system-ctl block on
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hi6220 SoC.
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Required properties:
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- compatible: may be "hisilicon,hi6220-sysctrl"
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- compatible: should be one of the following:
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- "hisilicon,hi6220-sysctrl", "syscon" : For peripheral reset controller.
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- "hisilicon,hi6220-mediactrl", "syscon" : For media reset controller.
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- reg: should be register base and length as documented in the
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datasheet
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- #reset-cells: 1, see below
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|
|
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@ -0,0 +1,91 @@
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TI SysCon Reset Controller
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=======================
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Almost all SoCs have hardware modules that require reset control in addition
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to clock and power control for their functionality. The reset control is
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typically provided by means of memory-mapped I/O registers. These registers are
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sometimes a part of a larger register space region implementing various
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functionalities. This register range is best represented as a syscon node to
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allow multiple entities to access their relevant registers in the common
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register space.
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A SysCon Reset Controller node defines a device that uses a syscon node
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and provides reset management functionality for various hardware modules
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present on the SoC.
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SysCon Reset Controller Node
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============================
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Each of the reset provider/controller nodes should be a child of a syscon
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node and have the following properties.
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Required properties:
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--------------------
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- compatible : Should be,
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"ti,k2e-pscrst"
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"ti,k2l-pscrst"
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"ti,k2hk-pscrst"
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"ti,syscon-reset"
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- #reset-cells : Should be 1. Please see the reset consumer node below
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for usage details
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- ti,reset-bits : Contains the reset control register information
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Should contain 7 cells for each reset exposed to
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consumers, defined as:
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Cell #1 : offset of the reset assert control
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register from the syscon register base
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Cell #2 : bit position of the reset in the reset
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assert control register
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Cell #3 : offset of the reset deassert control
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register from the syscon register base
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Cell #4 : bit position of the reset in the reset
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deassert control register
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Cell #5 : offset of the reset status register
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from the syscon register base
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Cell #6 : bit position of the reset in the
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reset status register
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Cell #7 : Flags used to control reset behavior,
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availible flags defined in the DT include
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file <dt-bindings/reset/ti-syscon.h>
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SysCon Reset Consumer Nodes
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===========================
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Each of the reset consumer nodes should have the following properties,
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in addition to their own properties.
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Required properties:
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--------------------
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- resets : A phandle to the reset controller node and an index number
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to a reset specifier as defined above.
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Please also refer to Documentation/devicetree/bindings/reset/reset.txt for
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common reset controller usage by consumers.
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Example:
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--------
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The following example demonstrates a syscon node, the reset controller node
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using the syscon node, and a consumer (a DSP device) on the TI Keystone 2
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Edison SoC.
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/ {
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soc {
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psc: power-sleep-controller@02350000 {
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compatible = "syscon", "simple-mfd";
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reg = <0x02350000 0x1000>;
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pscrst: psc-reset {
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compatible = "ti,k2e-pscrst", "ti,syscon-reset";
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#reset-cells = <1>;
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ti,reset-bits = <
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0xa3c 8 0xa3c 8 0x83c 8 (ASSERT_SET|DEASSERT_CLEAR|STATUS_SET) /* 0: pcrst-dsp0 */
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0xa40 5 0xa44 3 0 0 (ASSERT_SET|DEASSERT_CLEAR|STATUS_NONE) /* 1: pcrst-example */
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>;
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};
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};
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dsp0: dsp0 {
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...
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resets = <&pscrst 0>;
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...
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};
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};
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};
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@ -5,6 +5,7 @@
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*/
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/reset/hisi,hi6220-resets.h>
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#include <dt-bindings/clock/hi6220-clock.h>
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#include <dt-bindings/pinctrl/hisi.h>
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#include <dt-bindings/thermal/thermal.h>
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@ -252,6 +253,7 @@ media_ctrl: media_ctrl@f4410000 {
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compatible = "hisilicon,hi6220-mediactrl", "syscon";
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reg = <0x0 0xf4410000 0x0 0x1000>;
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#clock-cells = <1>;
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#reset-cells = <1>;
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};
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pm_ctrl: pm_ctrl@f7032000 {
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|
|
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@ -17,6 +17,16 @@ if RESET_CONTROLLER
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config RESET_OXNAS
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bool
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config TI_SYSCON_RESET
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tristate "TI SYSCON Reset Driver"
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depends on HAS_IOMEM
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select MFD_SYSCON
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help
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This enables the reset driver support for TI devices with
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memory-mapped reset registers as part of a syscon device node. If
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you wish to use the reset framework for such memory-mapped devices,
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say Y here. Otherwise, say N.
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source "drivers/reset/sti/Kconfig"
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source "drivers/reset/hisilicon/Kconfig"
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|
|
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@ -10,3 +10,4 @@ obj-$(CONFIG_ARCH_HISI) += hisilicon/
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obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o
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obj-$(CONFIG_ATH79) += reset-ath79.o
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obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o
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obj-$(CONFIG_TI_SYSCON_RESET) += reset-ti-syscon.o
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|
|
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@ -1,7 +1,8 @@
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/*
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* Hisilicon Hi6220 reset controller driver
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*
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* Copyright (c) 2015 Hisilicon Limited.
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* Copyright (c) 2016 Linaro Limited.
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* Copyright (c) 2015-2016 Hisilicon Limited.
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*
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* Author: Feng Chen <puck.chen@hisilicon.com>
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*
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@ -15,81 +16,130 @@
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#include <linux/module.h>
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#include <linux/bitops.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/mfd/syscon.h>
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#include <linux/reset-controller.h>
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#include <linux/reset.h>
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#include <linux/platform_device.h>
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#define ASSERT_OFFSET 0x300
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#define DEASSERT_OFFSET 0x304
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#define MAX_INDEX 0x509
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#define PERIPH_ASSERT_OFFSET 0x300
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#define PERIPH_DEASSERT_OFFSET 0x304
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#define PERIPH_MAX_INDEX 0x509
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#define SC_MEDIA_RSTEN 0x052C
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#define SC_MEDIA_RSTDIS 0x0530
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#define MEDIA_MAX_INDEX 8
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#define to_reset_data(x) container_of(x, struct hi6220_reset_data, rc_dev)
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struct hi6220_reset_data {
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void __iomem *assert_base;
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void __iomem *deassert_base;
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struct reset_controller_dev rc_dev;
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enum hi6220_reset_ctrl_type {
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PERIPHERAL,
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MEDIA,
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};
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static int hi6220_reset_assert(struct reset_controller_dev *rc_dev,
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struct hi6220_reset_data {
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struct reset_controller_dev rc_dev;
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struct regmap *regmap;
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};
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static int hi6220_peripheral_assert(struct reset_controller_dev *rc_dev,
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unsigned long idx)
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{
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struct hi6220_reset_data *data = to_reset_data(rc_dev);
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struct regmap *regmap = data->regmap;
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u32 bank = idx >> 8;
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u32 offset = idx & 0xff;
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u32 reg = PERIPH_ASSERT_OFFSET + bank * 0x10;
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int bank = idx >> 8;
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int offset = idx & 0xff;
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writel(BIT(offset), data->assert_base + (bank * 0x10));
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return 0;
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return regmap_write(regmap, reg, BIT(offset));
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}
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static int hi6220_reset_deassert(struct reset_controller_dev *rc_dev,
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static int hi6220_peripheral_deassert(struct reset_controller_dev *rc_dev,
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unsigned long idx)
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{
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struct hi6220_reset_data *data = to_reset_data(rc_dev);
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struct regmap *regmap = data->regmap;
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u32 bank = idx >> 8;
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u32 offset = idx & 0xff;
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u32 reg = PERIPH_DEASSERT_OFFSET + bank * 0x10;
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int bank = idx >> 8;
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int offset = idx & 0xff;
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writel(BIT(offset), data->deassert_base + (bank * 0x10));
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return 0;
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return regmap_write(regmap, reg, BIT(offset));
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}
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static const struct reset_control_ops hi6220_reset_ops = {
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.assert = hi6220_reset_assert,
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.deassert = hi6220_reset_deassert,
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static const struct reset_control_ops hi6220_peripheral_reset_ops = {
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.assert = hi6220_peripheral_assert,
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.deassert = hi6220_peripheral_deassert,
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};
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static int hi6220_media_assert(struct reset_controller_dev *rc_dev,
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unsigned long idx)
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{
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struct hi6220_reset_data *data = to_reset_data(rc_dev);
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struct regmap *regmap = data->regmap;
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return regmap_write(regmap, SC_MEDIA_RSTEN, BIT(idx));
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}
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static int hi6220_media_deassert(struct reset_controller_dev *rc_dev,
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unsigned long idx)
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{
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struct hi6220_reset_data *data = to_reset_data(rc_dev);
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struct regmap *regmap = data->regmap;
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return regmap_write(regmap, SC_MEDIA_RSTDIS, BIT(idx));
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}
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static const struct reset_control_ops hi6220_media_reset_ops = {
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.assert = hi6220_media_assert,
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.deassert = hi6220_media_deassert,
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};
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static int hi6220_reset_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct device *dev = &pdev->dev;
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enum hi6220_reset_ctrl_type type;
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struct hi6220_reset_data *data;
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struct resource *res;
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void __iomem *src_base;
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struct regmap *regmap;
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data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
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data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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src_base = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(src_base))
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return PTR_ERR(src_base);
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type = (enum hi6220_reset_ctrl_type)of_device_get_match_data(dev);
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data->assert_base = src_base + ASSERT_OFFSET;
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data->deassert_base = src_base + DEASSERT_OFFSET;
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data->rc_dev.nr_resets = MAX_INDEX;
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data->rc_dev.ops = &hi6220_reset_ops;
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data->rc_dev.of_node = pdev->dev.of_node;
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regmap = syscon_node_to_regmap(np);
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if (IS_ERR(regmap)) {
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dev_err(dev, "failed to get reset controller regmap\n");
|
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return PTR_ERR(regmap);
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}
|
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|
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data->regmap = regmap;
|
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data->rc_dev.of_node = np;
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if (type == MEDIA) {
|
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data->rc_dev.ops = &hi6220_media_reset_ops;
|
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data->rc_dev.nr_resets = MEDIA_MAX_INDEX;
|
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} else {
|
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data->rc_dev.ops = &hi6220_peripheral_reset_ops;
|
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data->rc_dev.nr_resets = PERIPH_MAX_INDEX;
|
||||
}
|
||||
|
||||
return reset_controller_register(&data->rc_dev);
|
||||
}
|
||||
|
||||
static const struct of_device_id hi6220_reset_match[] = {
|
||||
{ .compatible = "hisilicon,hi6220-sysctrl" },
|
||||
{ },
|
||||
{
|
||||
.compatible = "hisilicon,hi6220-sysctrl",
|
||||
.data = (void *)PERIPHERAL,
|
||||
},
|
||||
{
|
||||
.compatible = "hisilicon,hi6220-mediactrl",
|
||||
.data = (void *)MEDIA,
|
||||
},
|
||||
{ /* sentinel */ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, hi6220_reset_match);
|
||||
|
||||
static struct platform_driver hi6220_reset_driver = {
|
||||
.probe = hi6220_reset_probe,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,237 @@
|
|||
/*
|
||||
* TI SYSCON regmap reset driver
|
||||
*
|
||||
* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
|
||||
* Andrew F. Davis <afd@ti.com>
|
||||
* Suman Anna <afd@ti.com>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||||
* kind, whether express or implied; without even the implied warranty
|
||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#include <linux/mfd/syscon.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/of.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/reset-controller.h>
|
||||
|
||||
#include <dt-bindings/reset/ti-syscon.h>
|
||||
|
||||
/**
|
||||
* struct ti_syscon_reset_control - reset control structure
|
||||
* @assert_offset: reset assert control register offset from syscon base
|
||||
* @assert_bit: reset assert bit in the reset assert control register
|
||||
* @deassert_offset: reset deassert control register offset from syscon base
|
||||
* @deassert_bit: reset deassert bit in the reset deassert control register
|
||||
* @status_offset: reset status register offset from syscon base
|
||||
* @status_bit: reset status bit in the reset status register
|
||||
* @flags: reset flag indicating how the (de)assert and status are handled
|
||||
*/
|
||||
struct ti_syscon_reset_control {
|
||||
unsigned int assert_offset;
|
||||
unsigned int assert_bit;
|
||||
unsigned int deassert_offset;
|
||||
unsigned int deassert_bit;
|
||||
unsigned int status_offset;
|
||||
unsigned int status_bit;
|
||||
u32 flags;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ti_syscon_reset_data - reset controller information structure
|
||||
* @rcdev: reset controller entity
|
||||
* @regmap: regmap handle containing the memory-mapped reset registers
|
||||
* @controls: array of reset controls
|
||||
* @nr_controls: number of controls in control array
|
||||
*/
|
||||
struct ti_syscon_reset_data {
|
||||
struct reset_controller_dev rcdev;
|
||||
struct regmap *regmap;
|
||||
struct ti_syscon_reset_control *controls;
|
||||
unsigned int nr_controls;
|
||||
};
|
||||
|
||||
#define to_ti_syscon_reset_data(rcdev) \
|
||||
container_of(rcdev, struct ti_syscon_reset_data, rcdev)
|
||||
|
||||
/**
|
||||
* ti_syscon_reset_assert() - assert device reset
|
||||
* @rcdev: reset controller entity
|
||||
* @id: ID of the reset to be asserted
|
||||
*
|
||||
* This function implements the reset driver op to assert a device's reset.
|
||||
* This asserts the reset in a manner prescribed by the reset flags.
|
||||
*
|
||||
* Return: 0 for successful request, else a corresponding error value
|
||||
*/
|
||||
static int ti_syscon_reset_assert(struct reset_controller_dev *rcdev,
|
||||
unsigned long id)
|
||||
{
|
||||
struct ti_syscon_reset_data *data = to_ti_syscon_reset_data(rcdev);
|
||||
struct ti_syscon_reset_control *control;
|
||||
unsigned int mask, value;
|
||||
|
||||
if (id >= data->nr_controls)
|
||||
return -EINVAL;
|
||||
|
||||
control = &data->controls[id];
|
||||
|
||||
if (control->flags & ASSERT_NONE)
|
||||
return -ENOTSUPP; /* assert not supported for this reset */
|
||||
|
||||
mask = BIT(control->assert_bit);
|
||||
value = (control->flags & ASSERT_SET) ? mask : 0x0;
|
||||
|
||||
return regmap_update_bits(data->regmap, control->assert_offset, mask, value);
|
||||
}
|
||||
|
||||
/**
|
||||
* ti_syscon_reset_deassert() - deassert device reset
|
||||
* @rcdev: reset controller entity
|
||||
* @id: ID of reset to be deasserted
|
||||
*
|
||||
* This function implements the reset driver op to deassert a device's reset.
|
||||
* This deasserts the reset in a manner prescribed by the reset flags.
|
||||
*
|
||||
* Return: 0 for successful request, else a corresponding error value
|
||||
*/
|
||||
static int ti_syscon_reset_deassert(struct reset_controller_dev *rcdev,
|
||||
unsigned long id)
|
||||
{
|
||||
struct ti_syscon_reset_data *data = to_ti_syscon_reset_data(rcdev);
|
||||
struct ti_syscon_reset_control *control;
|
||||
unsigned int mask, value;
|
||||
|
||||
if (id >= data->nr_controls)
|
||||
return -EINVAL;
|
||||
|
||||
control = &data->controls[id];
|
||||
|
||||
if (control->flags & DEASSERT_NONE)
|
||||
return -ENOTSUPP; /* deassert not supported for this reset */
|
||||
|
||||
mask = BIT(control->deassert_bit);
|
||||
value = (control->flags & DEASSERT_SET) ? mask : 0x0;
|
||||
|
||||
return regmap_update_bits(data->regmap, control->deassert_offset, mask, value);
|
||||
}
|
||||
|
||||
/**
|
||||
* ti_syscon_reset_status() - check device reset status
|
||||
* @rcdev: reset controller entity
|
||||
* @id: ID of the reset for which the status is being requested
|
||||
*
|
||||
* This function implements the reset driver op to return the status of a
|
||||
* device's reset.
|
||||
*
|
||||
* Return: 0 if reset is deasserted, true if reset is asserted, else a
|
||||
* corresponding error value
|
||||
*/
|
||||
static int ti_syscon_reset_status(struct reset_controller_dev *rcdev,
|
||||
unsigned long id)
|
||||
{
|
||||
struct ti_syscon_reset_data *data = to_ti_syscon_reset_data(rcdev);
|
||||
struct ti_syscon_reset_control *control;
|
||||
unsigned int reset_state;
|
||||
int ret;
|
||||
|
||||
if (id >= data->nr_controls)
|
||||
return -EINVAL;
|
||||
|
||||
control = &data->controls[id];
|
||||
|
||||
if (control->flags & STATUS_NONE)
|
||||
return -ENOTSUPP; /* status not supported for this reset */
|
||||
|
||||
ret = regmap_read(data->regmap, control->status_offset, &reset_state);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return (reset_state & BIT(control->status_bit)) &&
|
||||
(control->flags & STATUS_SET);
|
||||
}
|
||||
|
||||
static struct reset_control_ops ti_syscon_reset_ops = {
|
||||
.assert = ti_syscon_reset_assert,
|
||||
.deassert = ti_syscon_reset_deassert,
|
||||
.status = ti_syscon_reset_status,
|
||||
};
|
||||
|
||||
static int ti_syscon_reset_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct device_node *np = dev->of_node;
|
||||
struct ti_syscon_reset_data *data;
|
||||
struct regmap *regmap;
|
||||
const __be32 *list;
|
||||
struct ti_syscon_reset_control *controls;
|
||||
int size, nr_controls, i;
|
||||
|
||||
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
|
||||
if (!data)
|
||||
return -ENOMEM;
|
||||
|
||||
regmap = syscon_node_to_regmap(np->parent);
|
||||
if (IS_ERR(regmap))
|
||||
return PTR_ERR(regmap);
|
||||
|
||||
list = of_get_property(np, "ti,reset-bits", &size);
|
||||
if (!list || (size / sizeof(*list)) % 7 != 0) {
|
||||
dev_err(dev, "invalid DT reset description\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
nr_controls = (size / sizeof(*list)) / 7;
|
||||
controls = devm_kzalloc(dev, nr_controls * sizeof(*controls), GFP_KERNEL);
|
||||
if (!controls)
|
||||
return -ENOMEM;
|
||||
|
||||
for (i = 0; i < nr_controls; i++) {
|
||||
controls[i].assert_offset = be32_to_cpup(list++);
|
||||
controls[i].assert_bit = be32_to_cpup(list++);
|
||||
controls[i].deassert_offset = be32_to_cpup(list++);
|
||||
controls[i].deassert_bit = be32_to_cpup(list++);
|
||||
controls[i].status_offset = be32_to_cpup(list++);
|
||||
controls[i].status_bit = be32_to_cpup(list++);
|
||||
controls[i].flags = be32_to_cpup(list++);
|
||||
}
|
||||
|
||||
data->rcdev.ops = &ti_syscon_reset_ops;
|
||||
data->rcdev.owner = THIS_MODULE;
|
||||
data->rcdev.of_node = np;
|
||||
data->rcdev.nr_resets = nr_controls;
|
||||
data->regmap = regmap;
|
||||
data->controls = controls;
|
||||
data->nr_controls = nr_controls;
|
||||
|
||||
platform_set_drvdata(pdev, data);
|
||||
|
||||
return devm_reset_controller_register(dev, &data->rcdev);
|
||||
}
|
||||
|
||||
static const struct of_device_id ti_syscon_reset_of_match[] = {
|
||||
{ .compatible = "ti,syscon-reset", },
|
||||
{ /* sentinel */ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, ti_syscon_reset_of_match);
|
||||
|
||||
static struct platform_driver ti_syscon_reset_driver = {
|
||||
.probe = ti_syscon_reset_probe,
|
||||
.driver = {
|
||||
.name = "ti-syscon-reset",
|
||||
.of_match_table = ti_syscon_reset_of_match,
|
||||
},
|
||||
};
|
||||
module_platform_driver(ti_syscon_reset_driver);
|
||||
|
||||
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
|
||||
MODULE_AUTHOR("Suman Anna <s-anna@ti.com>");
|
||||
MODULE_DESCRIPTION("TI SYSCON Regmap Reset Driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -64,4 +64,12 @@
|
|||
#define PERIPH_RSDIST9_CARM_SOCDBG 0x507
|
||||
#define PERIPH_RSDIST9_CARM_ETM 0x508
|
||||
|
||||
#define MEDIA_G3D 0
|
||||
#define MEDIA_CODEC_VPU 2
|
||||
#define MEDIA_CODEC_JPEG 3
|
||||
#define MEDIA_ISP 4
|
||||
#define MEDIA_ADE 5
|
||||
#define MEDIA_MMU 6
|
||||
#define MEDIA_XG2RAM1 7
|
||||
|
||||
#endif /*_DT_BINDINGS_RESET_CONTROLLER_HI6220*/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,38 @@
|
|||
/*
|
||||
* TI Syscon Reset definitions
|
||||
*
|
||||
* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
|
||||
#ifndef __DT_BINDINGS_RESET_TI_SYSCON_H__
|
||||
#define __DT_BINDINGS_RESET_TI_SYSCON_H__
|
||||
|
||||
/*
|
||||
* The reset does not support the feature and corresponding
|
||||
* values are not valid
|
||||
*/
|
||||
#define ASSERT_NONE (1 << 0)
|
||||
#define DEASSERT_NONE (1 << 1)
|
||||
#define STATUS_NONE (1 << 2)
|
||||
|
||||
/* When set this function is activated by setting(vs clearing) this bit */
|
||||
#define ASSERT_SET (1 << 3)
|
||||
#define DEASSERT_SET (1 << 4)
|
||||
#define STATUS_SET (1 << 5)
|
||||
|
||||
/* The following are the inverse of the above and are added for consistency */
|
||||
#define ASSERT_CLEAR (0 << 3)
|
||||
#define DEASSERT_CLEAR (0 << 4)
|
||||
#define STATUS_CLEAR (0 << 5)
|
||||
|
||||
#endif
|
||||
|
|
@ -84,8 +84,8 @@ static inline struct reset_control *__devm_reset_control_get(
|
|||
#endif /* CONFIG_RESET_CONTROLLER */
|
||||
|
||||
/**
|
||||
* reset_control_get - Lookup and obtain an exclusive reference to a
|
||||
* reset controller.
|
||||
* reset_control_get_exclusive - Lookup and obtain an exclusive reference
|
||||
* to a reset controller.
|
||||
* @dev: device to be reset by the controller
|
||||
* @id: reset line name
|
||||
*
|
||||
|
|
@ -98,8 +98,8 @@ static inline struct reset_control *__devm_reset_control_get(
|
|||
*
|
||||
* Use of id names is optional.
|
||||
*/
|
||||
static inline struct reset_control *__must_check reset_control_get(
|
||||
struct device *dev, const char *id)
|
||||
static inline struct reset_control *
|
||||
__must_check reset_control_get_exclusive(struct device *dev, const char *id)
|
||||
{
|
||||
#ifndef CONFIG_RESET_CONTROLLER
|
||||
WARN_ON(1);
|
||||
|
|
@ -107,12 +107,6 @@ static inline struct reset_control *__must_check reset_control_get(
|
|||
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0);
|
||||
}
|
||||
|
||||
static inline struct reset_control *reset_control_get_optional(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* reset_control_get_shared - Lookup and obtain a shared reference to a
|
||||
* reset controller.
|
||||
|
|
@ -141,9 +135,21 @@ static inline struct reset_control *reset_control_get_shared(
|
|||
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 1);
|
||||
}
|
||||
|
||||
static inline struct reset_control *reset_control_get_optional_exclusive(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 0);
|
||||
}
|
||||
|
||||
static inline struct reset_control *reset_control_get_optional_shared(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return __of_reset_control_get(dev ? dev->of_node : NULL, id, 0, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_reset_control_get - Lookup and obtain an exclusive reference to a
|
||||
* reset controller.
|
||||
* of_reset_control_get_exclusive - Lookup and obtain an exclusive reference
|
||||
* to a reset controller.
|
||||
* @node: device to be reset by the controller
|
||||
* @id: reset line name
|
||||
*
|
||||
|
|
@ -151,15 +157,41 @@ static inline struct reset_control *reset_control_get_shared(
|
|||
*
|
||||
* Use of id names is optional.
|
||||
*/
|
||||
static inline struct reset_control *of_reset_control_get(
|
||||
static inline struct reset_control *of_reset_control_get_exclusive(
|
||||
struct device_node *node, const char *id)
|
||||
{
|
||||
return __of_reset_control_get(node, id, 0, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_reset_control_get_by_index - Lookup and obtain an exclusive reference to
|
||||
* a reset controller by index.
|
||||
* of_reset_control_get_shared - Lookup and obtain an shared reference
|
||||
* to a reset controller.
|
||||
* @node: device to be reset by the controller
|
||||
* @id: reset line name
|
||||
*
|
||||
* When a reset-control is shared, the behavior of reset_control_assert /
|
||||
* deassert is changed, the reset-core will keep track of a deassert_count
|
||||
* and only (re-)assert the reset after reset_control_assert has been called
|
||||
* as many times as reset_control_deassert was called. Also see the remark
|
||||
* about shared reset-controls in the reset_control_assert docs.
|
||||
*
|
||||
* Calling reset_control_assert without first calling reset_control_deassert
|
||||
* is not allowed on a shared reset control. Calling reset_control_reset is
|
||||
* also not allowed on a shared reset control.
|
||||
* 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_shared(
|
||||
struct device_node *node, const char *id)
|
||||
{
|
||||
return __of_reset_control_get(node, id, 0, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* of_reset_control_get_exclusive_by_index - Lookup and obtain an exclusive
|
||||
* reference to a reset controller
|
||||
* by index.
|
||||
* @node: device to be reset by the controller
|
||||
* @index: index of the reset controller
|
||||
*
|
||||
|
|
@ -167,23 +199,55 @@ static inline struct reset_control *of_reset_control_get(
|
|||
* in whatever order. Returns a struct reset_control or IS_ERR() condition
|
||||
* containing errno.
|
||||
*/
|
||||
static inline struct reset_control *of_reset_control_get_by_index(
|
||||
static inline struct reset_control *of_reset_control_get_exclusive_by_index(
|
||||
struct device_node *node, int index)
|
||||
{
|
||||
return __of_reset_control_get(node, NULL, index, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_reset_control_get - resource managed reset_control_get()
|
||||
* of_reset_control_get_shared_by_index - Lookup and obtain an shared
|
||||
* reference to a reset controller
|
||||
* by index.
|
||||
* @node: device to be reset by the controller
|
||||
* @index: index of the reset controller
|
||||
*
|
||||
* When a reset-control is shared, the behavior of reset_control_assert /
|
||||
* deassert is changed, the reset-core will keep track of a deassert_count
|
||||
* and only (re-)assert the reset after reset_control_assert has been called
|
||||
* as many times as reset_control_deassert was called. Also see the remark
|
||||
* about shared reset-controls in the reset_control_assert docs.
|
||||
*
|
||||
* Calling reset_control_assert without first calling reset_control_deassert
|
||||
* is not allowed on a shared reset control. Calling reset_control_reset is
|
||||
* also not allowed on a shared reset control.
|
||||
* Returns a struct reset_control or IS_ERR() condition containing errno.
|
||||
*
|
||||
* This is to be used to perform a list of resets for a device or power domain
|
||||
* in whatever order. Returns a struct reset_control or IS_ERR() condition
|
||||
* containing errno.
|
||||
*/
|
||||
static inline struct reset_control *of_reset_control_get_shared_by_index(
|
||||
struct device_node *node, int index)
|
||||
{
|
||||
return __of_reset_control_get(node, NULL, index, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_reset_control_get_exclusive - resource managed
|
||||
* reset_control_get_exclusive()
|
||||
* @dev: device to be reset by the controller
|
||||
* @id: reset line name
|
||||
*
|
||||
* Managed reset_control_get(). For reset controllers returned from this
|
||||
* function, reset_control_put() is called automatically on driver detach.
|
||||
* See reset_control_get() for more information.
|
||||
* Managed reset_control_get_exclusive(). For reset controllers returned
|
||||
* from this function, reset_control_put() is called automatically on driver
|
||||
* detach.
|
||||
*
|
||||
* See reset_control_get_exclusive() for more information.
|
||||
*/
|
||||
static inline struct reset_control *__must_check devm_reset_control_get(
|
||||
struct device *dev, const char *id)
|
||||
static inline struct reset_control *
|
||||
__must_check devm_reset_control_get_exclusive(struct device *dev,
|
||||
const char *id)
|
||||
{
|
||||
#ifndef CONFIG_RESET_CONTROLLER
|
||||
WARN_ON(1);
|
||||
|
|
@ -191,27 +255,6 @@ static inline struct reset_control *__must_check devm_reset_control_get(
|
|||
return __devm_reset_control_get(dev, id, 0, 0);
|
||||
}
|
||||
|
||||
static inline struct reset_control *devm_reset_control_get_optional(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return __devm_reset_control_get(dev, id, 0, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_reset_control_get_by_index - resource managed reset_control_get
|
||||
* @dev: device to be reset by the controller
|
||||
* @index: index of the reset controller
|
||||
*
|
||||
* Managed reset_control_get(). For reset controllers returned from this
|
||||
* function, reset_control_put() is called automatically on driver detach.
|
||||
* See reset_control_get() for more information.
|
||||
*/
|
||||
static inline struct reset_control *devm_reset_control_get_by_index(
|
||||
struct device *dev, int index)
|
||||
{
|
||||
return __devm_reset_control_get(dev, NULL, index, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_reset_control_get_shared - resource managed reset_control_get_shared()
|
||||
* @dev: device to be reset by the controller
|
||||
|
|
@ -227,6 +270,36 @@ static inline struct reset_control *devm_reset_control_get_shared(
|
|||
return __devm_reset_control_get(dev, id, 0, 1);
|
||||
}
|
||||
|
||||
static inline struct reset_control *devm_reset_control_get_optional_exclusive(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return __devm_reset_control_get(dev, id, 0, 0);
|
||||
}
|
||||
|
||||
static inline struct reset_control *devm_reset_control_get_optional_shared(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return __devm_reset_control_get(dev, id, 0, 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_reset_control_get_exclusive_by_index - resource managed
|
||||
* reset_control_get_exclusive()
|
||||
* @dev: device to be reset by the controller
|
||||
* @index: index of the reset controller
|
||||
*
|
||||
* Managed reset_control_get_exclusive(). For reset controllers returned from
|
||||
* this function, reset_control_put() is called automatically on driver
|
||||
* detach.
|
||||
*
|
||||
* See reset_control_get_exclusive() for more information.
|
||||
*/
|
||||
static inline struct reset_control *
|
||||
devm_reset_control_get_exclusive_by_index(struct device *dev, int index)
|
||||
{
|
||||
return __devm_reset_control_get(dev, NULL, index, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_reset_control_get_shared_by_index - resource managed
|
||||
* reset_control_get_shared
|
||||
|
|
@ -237,10 +310,60 @@ static inline struct reset_control *devm_reset_control_get_shared(
|
|||
* this function, reset_control_put() is called automatically on driver detach.
|
||||
* See reset_control_get_shared() for more information.
|
||||
*/
|
||||
static inline struct reset_control *devm_reset_control_get_shared_by_index(
|
||||
struct device *dev, int index)
|
||||
static inline struct reset_control *
|
||||
devm_reset_control_get_shared_by_index(struct device *dev, int index)
|
||||
{
|
||||
return __devm_reset_control_get(dev, NULL, index, 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* TEMPORARY calls to use during transition:
|
||||
*
|
||||
* of_reset_control_get() => of_reset_control_get_exclusive()
|
||||
*
|
||||
* These inline function calls will be removed once all consumers
|
||||
* have been moved over to the new explicit API.
|
||||
*/
|
||||
static inline struct reset_control *reset_control_get(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return reset_control_get_exclusive(dev, id);
|
||||
}
|
||||
|
||||
static inline struct reset_control *reset_control_get_optional(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return reset_control_get_optional_exclusive(dev, id);
|
||||
}
|
||||
|
||||
static inline struct reset_control *of_reset_control_get(
|
||||
struct device_node *node, const char *id)
|
||||
{
|
||||
return of_reset_control_get_exclusive(node, id);
|
||||
}
|
||||
|
||||
static inline struct reset_control *of_reset_control_get_by_index(
|
||||
struct device_node *node, int index)
|
||||
{
|
||||
return of_reset_control_get_exclusive_by_index(node, index);
|
||||
}
|
||||
|
||||
static inline struct reset_control *devm_reset_control_get(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return devm_reset_control_get_exclusive(dev, id);
|
||||
}
|
||||
|
||||
static inline struct reset_control *devm_reset_control_get_optional(
|
||||
struct device *dev, const char *id)
|
||||
{
|
||||
return devm_reset_control_get_optional_exclusive(dev, id);
|
||||
|
||||
}
|
||||
|
||||
static inline struct reset_control *devm_reset_control_get_by_index(
|
||||
struct device *dev, int index)
|
||||
{
|
||||
return devm_reset_control_get_exclusive_by_index(dev, index);
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue