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-rw-r--r--drivers/reset/Kconfig1
-rw-r--r--drivers/reset/Makefile1
-rw-r--r--drivers/reset/core.c43
-rw-r--r--drivers/reset/reset-berlin.c12
-rw-r--r--drivers/reset/reset-lpc18xx.c32
-rw-r--r--drivers/reset/reset-oxnas.c1
-rw-r--r--drivers/reset/reset-socfpga.c10
-rw-r--r--drivers/reset/reset-sunxi.c9
-rw-r--r--drivers/reset/reset-zynq.c10
-rw-r--r--drivers/reset/sti/Kconfig8
-rw-r--r--drivers/reset/sti/Makefile2
-rw-r--r--drivers/reset/sti/reset-stih415.c112
-rw-r--r--drivers/reset/sti/reset-stih416.c143
-rw-r--r--drivers/reset/tegra/Kconfig2
-rw-r--r--drivers/reset/tegra/Makefile1
-rw-r--r--drivers/reset/tegra/reset-bpmp.c71
16 files changed, 133 insertions, 325 deletions
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 06d9fa2f3bc0..172dc966a01f 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -94,5 +94,6 @@ config RESET_ZYNQ
source "drivers/reset/sti/Kconfig"
source "drivers/reset/hisilicon/Kconfig"
+source "drivers/reset/tegra/Kconfig"
endif
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index bbe7026617fc..13b346e03d84 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -1,6 +1,7 @@
obj-y += core.o
obj-y += hisilicon/
obj-$(CONFIG_ARCH_STI) += sti/
+obj-$(CONFIG_ARCH_TEGRA) += tegra/
obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index b8ae1dbd4c17..10368ed8fd13 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -32,6 +32,9 @@ static LIST_HEAD(reset_controller_list);
* @refcnt: Number of gets of this reset_control
* @shared: Is this a shared (1), or an exclusive (0) reset_control?
* @deassert_cnt: Number of times this reset line has been deasserted
+ * @triggered_count: Number of times this reset line has been reset. Currently
+ * only used for shared resets, which means that the value
+ * will be either 0 or 1.
*/
struct reset_control {
struct reset_controller_dev *rcdev;
@@ -40,6 +43,7 @@ struct reset_control {
unsigned int refcnt;
int shared;
atomic_t deassert_count;
+ atomic_t triggered_count;
};
/**
@@ -134,18 +138,35 @@ EXPORT_SYMBOL_GPL(devm_reset_controller_register);
* reset_control_reset - reset the controlled device
* @rstc: reset controller
*
- * Calling this on a shared reset controller is an error.
+ * On a shared reset line the actual reset pulse is only triggered once for the
+ * lifetime of the reset_control instance: for all but the first caller this is
+ * a no-op.
+ * Consumers must not use reset_control_(de)assert on shared reset lines when
+ * reset_control_reset has been used.
*/
int reset_control_reset(struct reset_control *rstc)
{
- if (WARN_ON(IS_ERR_OR_NULL(rstc)) ||
- WARN_ON(rstc->shared))
+ int ret;
+
+ if (WARN_ON(IS_ERR_OR_NULL(rstc)))
return -EINVAL;
- if (rstc->rcdev->ops->reset)
- return rstc->rcdev->ops->reset(rstc->rcdev, rstc->id);
+ if (!rstc->rcdev->ops->reset)
+ return -ENOTSUPP;
- return -ENOTSUPP;
+ if (rstc->shared) {
+ if (WARN_ON(atomic_read(&rstc->deassert_count) != 0))
+ return -EINVAL;
+
+ if (atomic_inc_return(&rstc->triggered_count) != 1)
+ return 0;
+ }
+
+ ret = rstc->rcdev->ops->reset(rstc->rcdev, rstc->id);
+ if (rstc->shared && !ret)
+ atomic_dec(&rstc->triggered_count);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(reset_control_reset);
@@ -159,6 +180,8 @@ EXPORT_SYMBOL_GPL(reset_control_reset);
*
* For shared reset controls a driver cannot expect the hw's registers and
* internal state to be reset, but must be prepared for this to happen.
+ * Consumers must not use reset_control_reset on shared reset lines when
+ * reset_control_(de)assert has been used.
*/
int reset_control_assert(struct reset_control *rstc)
{
@@ -169,6 +192,9 @@ int reset_control_assert(struct reset_control *rstc)
return -ENOTSUPP;
if (rstc->shared) {
+ if (WARN_ON(atomic_read(&rstc->triggered_count) != 0))
+ return -EINVAL;
+
if (WARN_ON(atomic_read(&rstc->deassert_count) == 0))
return -EINVAL;
@@ -185,6 +211,8 @@ EXPORT_SYMBOL_GPL(reset_control_assert);
* @rstc: reset controller
*
* After calling this function, the reset is guaranteed to be deasserted.
+ * Consumers must not use reset_control_reset on shared reset lines when
+ * reset_control_(de)assert has been used.
*/
int reset_control_deassert(struct reset_control *rstc)
{
@@ -195,6 +223,9 @@ int reset_control_deassert(struct reset_control *rstc)
return -ENOTSUPP;
if (rstc->shared) {
+ if (WARN_ON(atomic_read(&rstc->triggered_count) != 0))
+ return -EINVAL;
+
if (atomic_inc_return(&rstc->deassert_count) != 1)
return 0;
}
diff --git a/drivers/reset/reset-berlin.c b/drivers/reset/reset-berlin.c
index 369f3917fd8e..371197bbd055 100644
--- a/drivers/reset/reset-berlin.c
+++ b/drivers/reset/reset-berlin.c
@@ -1,6 +1,8 @@
/*
* Copyright (C) 2014 Marvell Technology Group Ltd.
*
+ * Marvell Berlin reset driver
+ *
* Antoine Tenart <antoine.tenart@free-electrons.com>
* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
*
@@ -12,7 +14,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
@@ -91,7 +93,6 @@ static const struct of_device_id berlin_reset_dt_match[] = {
{ .compatible = "marvell,berlin2-reset" },
{ },
};
-MODULE_DEVICE_TABLE(of, berlin_reset_dt_match);
static struct platform_driver berlin_reset_driver = {
.probe = berlin2_reset_probe,
@@ -100,9 +101,4 @@ static struct platform_driver berlin_reset_driver = {
.of_match_table = berlin_reset_dt_match,
},
};
-module_platform_driver(berlin_reset_driver);
-
-MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
-MODULE_AUTHOR("Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>");
-MODULE_DESCRIPTION("Marvell Berlin reset driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(berlin_reset_driver);
diff --git a/drivers/reset/reset-lpc18xx.c b/drivers/reset/reset-lpc18xx.c
index 54cca0055171..a62ad52e262b 100644
--- a/drivers/reset/reset-lpc18xx.c
+++ b/drivers/reset/reset-lpc18xx.c
@@ -13,7 +13,7 @@
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
@@ -218,39 +218,17 @@ dis_clk_reg:
return ret;
}
-static int lpc18xx_rgu_remove(struct platform_device *pdev)
-{
- struct lpc18xx_rgu_data *rc = platform_get_drvdata(pdev);
- int ret;
-
- ret = unregister_restart_handler(&rc->restart_nb);
- if (ret)
- dev_warn(&pdev->dev, "failed to unregister restart handler\n");
-
- reset_controller_unregister(&rc->rcdev);
-
- clk_disable_unprepare(rc->clk_delay);
- clk_disable_unprepare(rc->clk_reg);
-
- return 0;
-}
-
static const struct of_device_id lpc18xx_rgu_match[] = {
{ .compatible = "nxp,lpc1850-rgu" },
{ }
};
-MODULE_DEVICE_TABLE(of, lpc18xx_rgu_match);
static struct platform_driver lpc18xx_rgu_driver = {
.probe = lpc18xx_rgu_probe,
- .remove = lpc18xx_rgu_remove,
.driver = {
- .name = "lpc18xx-reset",
- .of_match_table = lpc18xx_rgu_match,
+ .name = "lpc18xx-reset",
+ .of_match_table = lpc18xx_rgu_match,
+ .suppress_bind_attrs = true,
},
};
-module_platform_driver(lpc18xx_rgu_driver);
-
-MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
-MODULE_DESCRIPTION("Reset driver for LPC18xx/43xx RGU");
-MODULE_LICENSE("GPL v2");
+builtin_platform_driver(lpc18xx_rgu_driver);
diff --git a/drivers/reset/reset-oxnas.c b/drivers/reset/reset-oxnas.c
index 944980572f79..0d9036dea010 100644
--- a/drivers/reset/reset-oxnas.c
+++ b/drivers/reset/reset-oxnas.c
@@ -80,6 +80,7 @@ static const struct reset_control_ops oxnas_reset_ops = {
static const struct of_device_id oxnas_reset_dt_ids[] = {
{ .compatible = "oxsemi,ox810se-reset", },
+ { .compatible = "oxsemi,ox820-reset", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, oxnas_reset_dt_ids);
diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c
index 78ebf8424375..43e4a9f39b9b 100644
--- a/drivers/reset/reset-socfpga.c
+++ b/drivers/reset/reset-socfpga.c
@@ -1,4 +1,6 @@
/*
+ * Socfpga Reset Controller Driver
+ *
* Copyright 2014 Steffen Trumtrar <s.trumtrar@pengutronix.de>
*
* based on
@@ -16,7 +18,7 @@
#include <linux/err.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
@@ -148,8 +150,4 @@ static struct platform_driver socfpga_reset_driver = {
.of_match_table = socfpga_reset_dt_ids,
},
};
-module_platform_driver(socfpga_reset_driver);
-
-MODULE_AUTHOR("Steffen Trumtrar <s.trumtrar@pengutronix.de");
-MODULE_DESCRIPTION("Socfpga Reset Controller Driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(socfpga_reset_driver);
diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c
index 3080190b3f90..b44f6b5f87b6 100644
--- a/drivers/reset/reset-sunxi.c
+++ b/drivers/reset/reset-sunxi.c
@@ -13,7 +13,7 @@
#include <linux/err.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
@@ -142,7 +142,6 @@ static const struct of_device_id sunxi_reset_dt_ids[] = {
{ .compatible = "allwinner,sun6i-a31-clock-reset", },
{ /* sentinel */ },
};
-MODULE_DEVICE_TABLE(of, sunxi_reset_dt_ids);
static int sunxi_reset_probe(struct platform_device *pdev)
{
@@ -175,8 +174,4 @@ static struct platform_driver sunxi_reset_driver = {
.of_match_table = sunxi_reset_dt_ids,
},
};
-module_platform_driver(sunxi_reset_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner SoCs Reset Controller Driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sunxi_reset_driver);
diff --git a/drivers/reset/reset-zynq.c b/drivers/reset/reset-zynq.c
index 138f2f205662..87a4e355578f 100644
--- a/drivers/reset/reset-zynq.c
+++ b/drivers/reset/reset-zynq.c
@@ -3,6 +3,8 @@
*
* Xilinx Zynq Reset controller driver
*
+ * Author: Moritz Fischer <moritz.fischer@ettus.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; version 2 of the License.
@@ -15,7 +17,7 @@
#include <linux/err.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/platform_device.h>
@@ -137,8 +139,4 @@ static struct platform_driver zynq_reset_driver = {
.of_match_table = zynq_reset_dt_ids,
},
};
-module_platform_driver(zynq_reset_driver);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Moritz Fischer <moritz.fischer@ettus.com>");
-MODULE_DESCRIPTION("Zynq Reset Controller Driver");
+builtin_platform_driver(zynq_reset_driver);
diff --git a/drivers/reset/sti/Kconfig b/drivers/reset/sti/Kconfig
index 613178553612..71592b5bfd14 100644
--- a/drivers/reset/sti/Kconfig
+++ b/drivers/reset/sti/Kconfig
@@ -3,14 +3,6 @@ if ARCH_STI
config STI_RESET_SYSCFG
bool
-config STIH415_RESET
- bool
- select STI_RESET_SYSCFG
-
-config STIH416_RESET
- bool
- select STI_RESET_SYSCFG
-
config STIH407_RESET
bool
select STI_RESET_SYSCFG
diff --git a/drivers/reset/sti/Makefile b/drivers/reset/sti/Makefile
index dc85dfbe56a9..f9d82411f29e 100644
--- a/drivers/reset/sti/Makefile
+++ b/drivers/reset/sti/Makefile
@@ -1,5 +1,3 @@
obj-$(CONFIG_STI_RESET_SYSCFG) += reset-syscfg.o
-obj-$(CONFIG_STIH415_RESET) += reset-stih415.o
-obj-$(CONFIG_STIH416_RESET) += reset-stih416.o
obj-$(CONFIG_STIH407_RESET) += reset-stih407.o
diff --git a/drivers/reset/sti/reset-stih415.c b/drivers/reset/sti/reset-stih415.c
deleted file mode 100644
index 6f220cdbef46..000000000000
--- a/drivers/reset/sti/reset-stih415.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (C) 2013 STMicroelectronics (R&D) Limited
- * Author: Stephen Gallimore <stephen.gallimore@st.com>
- * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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.
- */
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/platform_device.h>
-
-#include <dt-bindings/reset/stih415-resets.h>
-
-#include "reset-syscfg.h"
-
-/*
- * STiH415 Peripheral powerdown definitions.
- */
-static const char stih415_front[] = "st,stih415-front-syscfg";
-static const char stih415_rear[] = "st,stih415-rear-syscfg";
-static const char stih415_sbc[] = "st,stih415-sbc-syscfg";
-static const char stih415_lpm[] = "st,stih415-lpm-syscfg";
-
-#define STIH415_PDN_FRONT(_bit) \
- _SYSCFG_RST_CH(stih415_front, SYSCFG_114, _bit, SYSSTAT_187, _bit)
-
-#define STIH415_PDN_REAR(_cntl, _stat) \
- _SYSCFG_RST_CH(stih415_rear, SYSCFG_336, _cntl, SYSSTAT_384, _stat)
-
-#define STIH415_SRST_REAR(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih415_rear, _reg, _bit)
-
-#define STIH415_SRST_SBC(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih415_sbc, _reg, _bit)
-
-#define STIH415_SRST_FRONT(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih415_front, _reg, _bit)
-
-#define STIH415_SRST_LPM(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih415_lpm, _reg, _bit)
-
-#define SYSCFG_114 0x38 /* Powerdown request EMI/NAND/Keyscan */
-#define SYSSTAT_187 0x15c /* Powerdown status EMI/NAND/Keyscan */
-
-#define SYSCFG_336 0x90 /* Powerdown request USB/SATA/PCIe */
-#define SYSSTAT_384 0x150 /* Powerdown status USB/SATA/PCIe */
-
-#define SYSCFG_376 0x130 /* Reset generator 0 control 0 */
-#define SYSCFG_166 0x108 /* Softreset Ethernet 0 */
-#define SYSCFG_31 0x7c /* Softreset Ethernet 1 */
-#define LPM_SYSCFG_1 0x4 /* Softreset IRB */
-
-static const struct syscfg_reset_channel_data stih415_powerdowns[] = {
- [STIH415_EMISS_POWERDOWN] = STIH415_PDN_FRONT(0),
- [STIH415_NAND_POWERDOWN] = STIH415_PDN_FRONT(1),
- [STIH415_KEYSCAN_POWERDOWN] = STIH415_PDN_FRONT(2),
- [STIH415_USB0_POWERDOWN] = STIH415_PDN_REAR(0, 0),
- [STIH415_USB1_POWERDOWN] = STIH415_PDN_REAR(1, 1),
- [STIH415_USB2_POWERDOWN] = STIH415_PDN_REAR(2, 2),
- [STIH415_SATA0_POWERDOWN] = STIH415_PDN_REAR(3, 3),
- [STIH415_SATA1_POWERDOWN] = STIH415_PDN_REAR(4, 4),
- [STIH415_PCIE_POWERDOWN] = STIH415_PDN_REAR(5, 8),
-};
-
-static const struct syscfg_reset_channel_data stih415_softresets[] = {
- [STIH415_ETH0_SOFTRESET] = STIH415_SRST_FRONT(SYSCFG_166, 0),
- [STIH415_ETH1_SOFTRESET] = STIH415_SRST_SBC(SYSCFG_31, 0),
- [STIH415_IRB_SOFTRESET] = STIH415_SRST_LPM(LPM_SYSCFG_1, 6),
- [STIH415_USB0_SOFTRESET] = STIH415_SRST_REAR(SYSCFG_376, 9),
- [STIH415_USB1_SOFTRESET] = STIH415_SRST_REAR(SYSCFG_376, 10),
- [STIH415_USB2_SOFTRESET] = STIH415_SRST_REAR(SYSCFG_376, 11),
- [STIH415_KEYSCAN_SOFTRESET] = STIH415_SRST_LPM(LPM_SYSCFG_1, 8),
-};
-
-static struct syscfg_reset_controller_data stih415_powerdown_controller = {
- .wait_for_ack = true,
- .nr_channels = ARRAY_SIZE(stih415_powerdowns),
- .channels = stih415_powerdowns,
-};
-
-static struct syscfg_reset_controller_data stih415_softreset_controller = {
- .wait_for_ack = false,
- .active_low = true,
- .nr_channels = ARRAY_SIZE(stih415_softresets),
- .channels = stih415_softresets,
-};
-
-static const struct of_device_id stih415_reset_match[] = {
- { .compatible = "st,stih415-powerdown",
- .data = &stih415_powerdown_controller, },
- { .compatible = "st,stih415-softreset",
- .data = &stih415_softreset_controller, },
- {},
-};
-
-static struct platform_driver stih415_reset_driver = {
- .probe = syscfg_reset_probe,
- .driver = {
- .name = "reset-stih415",
- .of_match_table = stih415_reset_match,
- },
-};
-
-static int __init stih415_reset_init(void)
-{
- return platform_driver_register(&stih415_reset_driver);
-}
-arch_initcall(stih415_reset_init);
diff --git a/drivers/reset/sti/reset-stih416.c b/drivers/reset/sti/reset-stih416.c
deleted file mode 100644
index c581d606ef0f..000000000000
--- a/drivers/reset/sti/reset-stih416.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright (C) 2013 STMicroelectronics (R&D) Limited
- * Author: Stephen Gallimore <stephen.gallimore@st.com>
- * Author: Srinivas Kandagatla <srinivas.kandagatla@st.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.
- */
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/platform_device.h>
-
-#include <dt-bindings/reset/stih416-resets.h>
-
-#include "reset-syscfg.h"
-
-/*
- * STiH416 Peripheral powerdown definitions.
- */
-static const char stih416_front[] = "st,stih416-front-syscfg";
-static const char stih416_rear[] = "st,stih416-rear-syscfg";
-static const char stih416_sbc[] = "st,stih416-sbc-syscfg";
-static const char stih416_lpm[] = "st,stih416-lpm-syscfg";
-static const char stih416_cpu[] = "st,stih416-cpu-syscfg";
-
-#define STIH416_PDN_FRONT(_bit) \
- _SYSCFG_RST_CH(stih416_front, SYSCFG_1500, _bit, SYSSTAT_1578, _bit)
-
-#define STIH416_PDN_REAR(_cntl, _stat) \
- _SYSCFG_RST_CH(stih416_rear, SYSCFG_2525, _cntl, SYSSTAT_2583, _stat)
-
-#define SYSCFG_1500 0x7d0 /* Powerdown request EMI/NAND/Keyscan */
-#define SYSSTAT_1578 0x908 /* Powerdown status EMI/NAND/Keyscan */
-
-#define SYSCFG_2525 0x834 /* Powerdown request USB/SATA/PCIe */
-#define SYSSTAT_2583 0x91c /* Powerdown status USB/SATA/PCIe */
-
-#define SYSCFG_2552 0x8A0 /* Reset Generator control 0 */
-#define SYSCFG_1539 0x86c /* Softreset Ethernet 0 */
-#define SYSCFG_510 0x7f8 /* Softreset Ethernet 1 */
-#define LPM_SYSCFG_1 0x4 /* Softreset IRB */
-#define SYSCFG_2553 0x8a4 /* Softreset SATA0/1, PCIE0/1 */
-#define SYSCFG_7563 0x8cc /* MPE softresets 0 */
-#define SYSCFG_7564 0x8d0 /* MPE softresets 1 */
-
-#define STIH416_SRST_CPU(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih416_cpu, _reg, _bit)
-
-#define STIH416_SRST_FRONT(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih416_front, _reg, _bit)
-
-#define STIH416_SRST_REAR(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih416_rear, _reg, _bit)
-
-#define STIH416_SRST_LPM(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih416_lpm, _reg, _bit)
-
-#define STIH416_SRST_SBC(_reg, _bit) \
- _SYSCFG_RST_CH_NO_ACK(stih416_sbc, _reg, _bit)
-
-static const struct syscfg_reset_channel_data stih416_powerdowns[] = {
- [STIH416_EMISS_POWERDOWN] = STIH416_PDN_FRONT(0),
- [STIH416_NAND_POWERDOWN] = STIH416_PDN_FRONT(1),
- [STIH416_KEYSCAN_POWERDOWN] = STIH416_PDN_FRONT(2),
- [STIH416_USB0_POWERDOWN] = STIH416_PDN_REAR(0, 0),
- [STIH416_USB1_POWERDOWN] = STIH416_PDN_REAR(1, 1),
- [STIH416_USB2_POWERDOWN] = STIH416_PDN_REAR(2, 2),
- [STIH416_USB3_POWERDOWN] = STIH416_PDN_REAR(6, 5),
- [STIH416_SATA0_POWERDOWN] = STIH416_PDN_REAR(3, 3),
- [STIH416_SATA1_POWERDOWN] = STIH416_PDN_REAR(4, 4),
- [STIH416_PCIE0_POWERDOWN] = STIH416_PDN_REAR(7, 9),
- [STIH416_PCIE1_POWERDOWN] = STIH416_PDN_REAR(5, 8),
-};
-
-static const struct syscfg_reset_channel_data stih416_softresets[] = {
- [STIH416_ETH0_SOFTRESET] = STIH416_SRST_FRONT(SYSCFG_1539, 0),
- [STIH416_ETH1_SOFTRESET] = STIH416_SRST_SBC(SYSCFG_510, 0),
- [STIH416_IRB_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 6),
- [STIH416_USB0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 9),
- [STIH416_USB1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 10),
- [STIH416_USB2_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 11),
- [STIH416_USB3_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 28),
- [STIH416_SATA0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 7),
- [STIH416_SATA1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 3),
- [STIH416_PCIE0_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 15),
- [STIH416_PCIE1_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 2),
- [STIH416_AUD_DAC_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 14),
- [STIH416_HDTVOUT_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 5),
- [STIH416_VTAC_M_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 25),
- [STIH416_VTAC_A_RX_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2552, 26),
- [STIH416_SYNC_HD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 5),
- [STIH416_SYNC_SD_SOFTRESET] = STIH416_SRST_REAR(SYSCFG_2553, 6),
- [STIH416_BLITTER_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 10),
- [STIH416_GPU_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 11),
- [STIH416_VTAC_M_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 18),
- [STIH416_VTAC_A_TX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 19),
- [STIH416_VTG_AUX_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 21),
- [STIH416_JPEG_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7563, 23),
- [STIH416_HVA_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 2),
- [STIH416_COMPO_M_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 3),
- [STIH416_COMPO_A_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 4),
- [STIH416_VP8_DEC_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 10),
- [STIH416_VTG_MAIN_SOFTRESET] = STIH416_SRST_CPU(SYSCFG_7564, 16),
- [STIH416_KEYSCAN_SOFTRESET] = STIH416_SRST_LPM(LPM_SYSCFG_1, 8),
-};
-
-static struct syscfg_reset_controller_data stih416_powerdown_controller = {
- .wait_for_ack = true,
- .nr_channels = ARRAY_SIZE(stih416_powerdowns),
- .channels = stih416_powerdowns,
-};
-
-static struct syscfg_reset_controller_data stih416_softreset_controller = {
- .wait_for_ack = false,
- .active_low = true,
- .nr_channels = ARRAY_SIZE(stih416_softresets),
- .channels = stih416_softresets,
-};
-
-static const struct of_device_id stih416_reset_match[] = {
- { .compatible = "st,stih416-powerdown",
- .data = &stih416_powerdown_controller, },
- { .compatible = "st,stih416-softreset",
- .data = &stih416_softreset_controller, },
- {},
-};
-
-static struct platform_driver stih416_reset_driver = {
- .probe = syscfg_reset_probe,
- .driver = {
- .name = "reset-stih416",
- .of_match_table = stih416_reset_match,
- },
-};
-
-static int __init stih416_reset_init(void)
-{
- return platform_driver_register(&stih416_reset_driver);
-}
-arch_initcall(stih416_reset_init);
diff --git a/drivers/reset/tegra/Kconfig b/drivers/reset/tegra/Kconfig
new file mode 100644
index 000000000000..d2afa293df7d
--- /dev/null
+++ b/drivers/reset/tegra/Kconfig
@@ -0,0 +1,2 @@
+config RESET_TEGRA_BPMP
+ def_bool TEGRA_BPMP
diff --git a/drivers/reset/tegra/Makefile b/drivers/reset/tegra/Makefile
new file mode 100644
index 000000000000..775243ab7383
--- /dev/null
+++ b/drivers/reset/tegra/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_RESET_TEGRA_BPMP) += reset-bpmp.o
diff --git a/drivers/reset/tegra/reset-bpmp.c b/drivers/reset/tegra/reset-bpmp.c
new file mode 100644
index 000000000000..5daf2ee1a396
--- /dev/null
+++ b/drivers/reset/tegra/reset-bpmp.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2016 NVIDIA Corporation
+ *
+ * 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.
+ */
+
+#include <linux/reset-controller.h>
+
+#include <soc/tegra/bpmp.h>
+#include <soc/tegra/bpmp-abi.h>
+
+static struct tegra_bpmp *to_tegra_bpmp(struct reset_controller_dev *rstc)
+{
+ return container_of(rstc, struct tegra_bpmp, rstc);
+}
+
+static int tegra_bpmp_reset_common(struct reset_controller_dev *rstc,
+ enum mrq_reset_commands command,
+ unsigned int id)
+{
+ struct tegra_bpmp *bpmp = to_tegra_bpmp(rstc);
+ struct mrq_reset_request request;
+ struct tegra_bpmp_message msg;
+
+ memset(&request, 0, sizeof(request));
+ request.cmd = command;
+ request.reset_id = id;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.mrq = MRQ_RESET;
+ msg.tx.data = &request;
+ msg.tx.size = sizeof(request);
+
+ return tegra_bpmp_transfer(bpmp, &msg);
+}
+
+static int tegra_bpmp_reset_module(struct reset_controller_dev *rstc,
+ unsigned long id)
+{
+ return tegra_bpmp_reset_common(rstc, CMD_RESET_MODULE, id);
+}
+
+static int tegra_bpmp_reset_assert(struct reset_controller_dev *rstc,
+ unsigned long id)
+{
+ return tegra_bpmp_reset_common(rstc, CMD_RESET_ASSERT, id);
+}
+
+static int tegra_bpmp_reset_deassert(struct reset_controller_dev *rstc,
+ unsigned long id)
+{
+ return tegra_bpmp_reset_common(rstc, CMD_RESET_DEASSERT, id);
+}
+
+static const struct reset_control_ops tegra_bpmp_reset_ops = {
+ .reset = tegra_bpmp_reset_module,
+ .assert = tegra_bpmp_reset_assert,
+ .deassert = tegra_bpmp_reset_deassert,
+};
+
+int tegra_bpmp_init_resets(struct tegra_bpmp *bpmp)
+{
+ bpmp->rstc.ops = &tegra_bpmp_reset_ops;
+ bpmp->rstc.owner = THIS_MODULE;
+ bpmp->rstc.of_node = bpmp->dev->of_node;
+ bpmp->rstc.nr_resets = bpmp->soc->num_resets;
+
+ return devm_reset_controller_register(bpmp->dev, &bpmp->rstc);
+}
generated by cgit (git 2.34.1) at 2024-05-27 19:46:24 +0000