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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-08 11:55:21 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-08 11:55:21 -0800
commitd20f7a09e5eeeeef5db679adc9a490fecb6a4c87 (patch)
tree94a01e0ba407a5cd41ab05ec624807658a36b54f /drivers/net
parentdd72945c43d34bee496b847e021069dc31f7398f (diff)
parent7d0003da6297eb128f3490e396e6fc6df71557cd (diff)
downloadlinux-d20f7a09e5eeeeef5db679adc9a490fecb6a4c87.tar.bz2
Merge tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski: "We have a single new driver, new features in others and some cleanups all over the place. Nothing really stands out and it is all relatively small. - new driver: gpio-modepin (plus relevant change in zynqmp firmware) - add interrupt support to gpio-virtio - enable the 'gpio-line-names' property in the DT bindings for gpio-rockchip - use the subsystem helpers where applicable in gpio-uniphier instead of accessing IRQ structures directly - code shrink in gpio-xilinx - add interrupt to gpio-mlxbf2 (and include the removal of custom interrupt code from the mellanox ethernet driver) - support multiple interrupts per bank in gpio-tegra186 (and force one interrupt per bank in older models) - fix GPIO line IRQ offset calculation in gpio-realtek-otto - drop unneeded MODULE_ALIAS expansions in multiple drivers - code cleanup in gpio-aggregator - minor improvements in gpio-max730x and gpio-mc33880 - Kconfig cleanups" * tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: virtio_gpio: drop packed attribute gpio: virtio: Add IRQ support gpio: realtek-otto: fix GPIO line IRQ offset gpio: clean up Kconfig file net: mellanox: mlxbf_gige: Replace non-standard interrupt handling gpio: mlxbf2: Introduce IRQ support gpio: mc33880: Drop if with an always false condition gpio: max730x: Make __max730x_remove() return void gpio: aggregator: Wrap access to gpiochip_fwd.tmp[] gpio: modepin: Add driver support for modepin GPIO controller dt-bindings: gpio: zynqmp: Add binding documentation for modepin firmware: zynqmp: Add MMIO read and write support for PS_MODE pin gpio: tps65218: drop unneeded MODULE_ALIAS gpio: max77620: drop unneeded MODULE_ALIAS gpio: xilinx: simplify getting .driver_data gpio: tegra186: Support multiple interrupts per bank gpio: tegra186: Force one interrupt per bank gpio: uniphier: Use helper functions to get private data from IRQ data gpio: uniphier: Use helper function to get IRQ hardware number dt-bindings: gpio: add gpio-line-names to rockchip,gpio-bank.yaml
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/ethernet/mellanox/mlxbf_gige/Makefile1
-rw-r--r--drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h12
-rw-r--r--drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_gpio.c212
-rw-r--r--drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c22
4 files changed, 9 insertions, 238 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/Makefile b/drivers/net/ethernet/mellanox/mlxbf_gige/Makefile
index e57c1375f236..a97c2bef846b 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/Makefile
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/Makefile
@@ -3,7 +3,6 @@
obj-$(CONFIG_MLXBF_GIGE) += mlxbf_gige.o
mlxbf_gige-y := mlxbf_gige_ethtool.o \
- mlxbf_gige_gpio.o \
mlxbf_gige_intr.o \
mlxbf_gige_main.o \
mlxbf_gige_mdio.o \
diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h
index e3509e69ed1c..86826a70f9dd 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige.h
@@ -51,11 +51,6 @@
#define MLXBF_GIGE_ERROR_INTR_IDX 0
#define MLXBF_GIGE_RECEIVE_PKT_INTR_IDX 1
#define MLXBF_GIGE_LLU_PLU_INTR_IDX 2
-#define MLXBF_GIGE_PHY_INT_N 3
-
-#define MLXBF_GIGE_MDIO_DEFAULT_PHY_ADDR 0x3
-
-#define MLXBF_GIGE_DEFAULT_PHY_INT_GPIO 12
struct mlxbf_gige_stats {
u64 hw_access_errors;
@@ -81,11 +76,7 @@ struct mlxbf_gige {
struct platform_device *pdev;
void __iomem *mdio_io;
struct mii_bus *mdiobus;
- void __iomem *gpio_io;
- struct irq_domain *irqdomain;
- u32 phy_int_gpio_mask;
spinlock_t lock; /* for packet processing indices */
- spinlock_t gpio_lock; /* for GPIO bus access */
u16 rx_q_entries;
u16 tx_q_entries;
u64 *tx_wqe_base;
@@ -184,7 +175,4 @@ int mlxbf_gige_poll(struct napi_struct *napi, int budget);
extern const struct ethtool_ops mlxbf_gige_ethtool_ops;
void mlxbf_gige_update_tx_wqe_next(struct mlxbf_gige *priv);
-int mlxbf_gige_gpio_init(struct platform_device *pdev, struct mlxbf_gige *priv);
-void mlxbf_gige_gpio_free(struct mlxbf_gige *priv);
-
#endif /* !defined(__MLXBF_GIGE_H__) */
diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_gpio.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_gpio.c
deleted file mode 100644
index a8d966db5715..000000000000
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_gpio.c
+++ /dev/null
@@ -1,212 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause
-
-/* Initialize and handle GPIO interrupt triggered by INT_N PHY signal.
- * This GPIO interrupt triggers the PHY state machine to bring the link
- * up/down.
- *
- * Copyright (C) 2021 NVIDIA CORPORATION & AFFILIATES
- */
-
-#include <linux/acpi.h>
-#include <linux/bitfield.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/gpio/driver.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/irqreturn.h>
-#include <linux/platform_device.h>
-#include <linux/property.h>
-
-#include "mlxbf_gige.h"
-#include "mlxbf_gige_regs.h"
-
-#define MLXBF_GIGE_GPIO_CAUSE_FALL_EN 0x48
-#define MLXBF_GIGE_GPIO_CAUSE_OR_CAUSE_EVTEN0 0x80
-#define MLXBF_GIGE_GPIO_CAUSE_OR_EVTEN0 0x94
-#define MLXBF_GIGE_GPIO_CAUSE_OR_CLRCAUSE 0x98
-
-static void mlxbf_gige_gpio_enable(struct mlxbf_gige *priv)
-{
- unsigned long flags;
- u32 val;
-
- spin_lock_irqsave(&priv->gpio_lock, flags);
- val = readl(priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_CLRCAUSE);
- val |= priv->phy_int_gpio_mask;
- writel(val, priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_CLRCAUSE);
-
- /* The INT_N interrupt level is active low.
- * So enable cause fall bit to detect when GPIO
- * state goes low.
- */
- val = readl(priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_FALL_EN);
- val |= priv->phy_int_gpio_mask;
- writel(val, priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_FALL_EN);
-
- /* Enable PHY interrupt by setting the priority level */
- val = readl(priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_EVTEN0);
- val |= priv->phy_int_gpio_mask;
- writel(val, priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_EVTEN0);
- spin_unlock_irqrestore(&priv->gpio_lock, flags);
-}
-
-static void mlxbf_gige_gpio_disable(struct mlxbf_gige *priv)
-{
- unsigned long flags;
- u32 val;
-
- spin_lock_irqsave(&priv->gpio_lock, flags);
- val = readl(priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_EVTEN0);
- val &= ~priv->phy_int_gpio_mask;
- writel(val, priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_EVTEN0);
- spin_unlock_irqrestore(&priv->gpio_lock, flags);
-}
-
-static irqreturn_t mlxbf_gige_gpio_handler(int irq, void *ptr)
-{
- struct mlxbf_gige *priv;
- u32 val;
-
- priv = ptr;
-
- /* Check if this interrupt is from PHY device.
- * Return if it is not.
- */
- val = readl(priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_CAUSE_EVTEN0);
- if (!(val & priv->phy_int_gpio_mask))
- return IRQ_NONE;
-
- /* Clear interrupt when done, otherwise, no further interrupt
- * will be triggered.
- */
- val = readl(priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_CLRCAUSE);
- val |= priv->phy_int_gpio_mask;
- writel(val, priv->gpio_io + MLXBF_GIGE_GPIO_CAUSE_OR_CLRCAUSE);
-
- generic_handle_irq(priv->phy_irq);
-
- return IRQ_HANDLED;
-}
-
-static void mlxbf_gige_gpio_mask(struct irq_data *irqd)
-{
- struct mlxbf_gige *priv = irq_data_get_irq_chip_data(irqd);
-
- mlxbf_gige_gpio_disable(priv);
-}
-
-static void mlxbf_gige_gpio_unmask(struct irq_data *irqd)
-{
- struct mlxbf_gige *priv = irq_data_get_irq_chip_data(irqd);
-
- mlxbf_gige_gpio_enable(priv);
-}
-
-static struct irq_chip mlxbf_gige_gpio_chip = {
- .name = "mlxbf_gige_phy",
- .irq_mask = mlxbf_gige_gpio_mask,
- .irq_unmask = mlxbf_gige_gpio_unmask,
-};
-
-static int mlxbf_gige_gpio_domain_map(struct irq_domain *d,
- unsigned int irq,
- irq_hw_number_t hwirq)
-{
- irq_set_chip_data(irq, d->host_data);
- irq_set_chip_and_handler(irq, &mlxbf_gige_gpio_chip, handle_simple_irq);
- irq_set_noprobe(irq);
-
- return 0;
-}
-
-static const struct irq_domain_ops mlxbf_gige_gpio_domain_ops = {
- .map = mlxbf_gige_gpio_domain_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-#ifdef CONFIG_ACPI
-static int mlxbf_gige_gpio_resources(struct acpi_resource *ares,
- void *data)
-{
- struct acpi_resource_gpio *gpio;
- u32 *phy_int_gpio = data;
-
- if (ares->type == ACPI_RESOURCE_TYPE_GPIO) {
- gpio = &ares->data.gpio;
- *phy_int_gpio = gpio->pin_table[0];
- }
-
- return 1;
-}
-#endif
-
-void mlxbf_gige_gpio_free(struct mlxbf_gige *priv)
-{
- irq_dispose_mapping(priv->phy_irq);
- irq_domain_remove(priv->irqdomain);
-}
-
-int mlxbf_gige_gpio_init(struct platform_device *pdev,
- struct mlxbf_gige *priv)
-{
- struct device *dev = &pdev->dev;
- struct resource *res;
- u32 phy_int_gpio = 0;
- int ret;
-
- LIST_HEAD(resources);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, MLXBF_GIGE_RES_GPIO0);
- if (!res)
- return -ENODEV;
-
- priv->gpio_io = devm_ioremap(dev, res->start, resource_size(res));
- if (!priv->gpio_io)
- return -ENOMEM;
-
-#ifdef CONFIG_ACPI
- ret = acpi_dev_get_resources(ACPI_COMPANION(dev),
- &resources, mlxbf_gige_gpio_resources,
- &phy_int_gpio);
- acpi_dev_free_resource_list(&resources);
- if (ret < 0 || !phy_int_gpio) {
- dev_err(dev, "Error retrieving the gpio phy pin");
- return -EINVAL;
- }
-#endif
-
- priv->phy_int_gpio_mask = BIT(phy_int_gpio);
-
- mlxbf_gige_gpio_disable(priv);
-
- priv->hw_phy_irq = platform_get_irq(pdev, MLXBF_GIGE_PHY_INT_N);
-
- priv->irqdomain = irq_domain_add_simple(NULL, 1, 0,
- &mlxbf_gige_gpio_domain_ops,
- priv);
- if (!priv->irqdomain) {
- dev_err(dev, "Failed to add IRQ domain\n");
- return -ENOMEM;
- }
-
- priv->phy_irq = irq_create_mapping(priv->irqdomain, 0);
- if (!priv->phy_irq) {
- irq_domain_remove(priv->irqdomain);
- priv->irqdomain = NULL;
- dev_err(dev, "Error mapping PHY IRQ\n");
- return -EINVAL;
- }
-
- ret = devm_request_irq(dev, priv->hw_phy_irq, mlxbf_gige_gpio_handler,
- IRQF_ONESHOT | IRQF_SHARED, "mlxbf_gige_phy", priv);
- if (ret) {
- dev_err(dev, "Failed to request PHY IRQ");
- mlxbf_gige_gpio_free(priv);
- return ret;
- }
-
- return ret;
-}
diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
index b990782c1eb1..66ef0090755e 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
@@ -280,8 +280,8 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
void __iomem *llu_base;
void __iomem *plu_base;
void __iomem *base;
+ int addr, phy_irq;
u64 control;
- int addr;
int err;
base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_MAC);
@@ -316,20 +316,12 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
priv->pdev = pdev;
spin_lock_init(&priv->lock);
- spin_lock_init(&priv->gpio_lock);
/* Attach MDIO device */
err = mlxbf_gige_mdio_probe(pdev, priv);
if (err)
return err;
- err = mlxbf_gige_gpio_init(pdev, priv);
- if (err) {
- dev_err(&pdev->dev, "PHY IRQ initialization failed\n");
- mlxbf_gige_mdio_remove(priv);
- return -ENODEV;
- }
-
priv->base = base;
priv->llu_base = llu_base;
priv->plu_base = plu_base;
@@ -350,6 +342,12 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
priv->rx_irq = platform_get_irq(pdev, MLXBF_GIGE_RECEIVE_PKT_INTR_IDX);
priv->llu_plu_irq = platform_get_irq(pdev, MLXBF_GIGE_LLU_PLU_INTR_IDX);
+ phy_irq = acpi_dev_gpio_irq_get_by(ACPI_COMPANION(&pdev->dev), "phy-gpios", 0);
+ if (phy_irq < 0) {
+ dev_err(&pdev->dev, "Error getting PHY irq. Use polling instead");
+ phy_irq = PHY_POLL;
+ }
+
phydev = phy_find_first(priv->mdiobus);
if (!phydev) {
err = -ENODEV;
@@ -357,8 +355,8 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
}
addr = phydev->mdio.addr;
- priv->mdiobus->irq[addr] = priv->phy_irq;
- phydev->irq = priv->phy_irq;
+ priv->mdiobus->irq[addr] = phy_irq;
+ phydev->irq = phy_irq;
err = phy_connect_direct(netdev, phydev,
mlxbf_gige_adjust_link,
@@ -394,7 +392,6 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
return 0;
out:
- mlxbf_gige_gpio_free(priv);
mlxbf_gige_mdio_remove(priv);
return err;
}
@@ -405,7 +402,6 @@ static int mlxbf_gige_remove(struct platform_device *pdev)
unregister_netdev(priv->netdev);
phy_disconnect(priv->netdev->phydev);
- mlxbf_gige_gpio_free(priv);
mlxbf_gige_mdio_remove(priv);
platform_set_drvdata(pdev, NULL);