diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/net/ethernet/hisilicon/hip04_mdio.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/net/ethernet/hisilicon/hip04_mdio.c')
-rw-r--r-- | kernel/drivers/net/ethernet/hisilicon/hip04_mdio.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/kernel/drivers/net/ethernet/hisilicon/hip04_mdio.c b/kernel/drivers/net/ethernet/hisilicon/hip04_mdio.c deleted file mode 100644 index b3bac25db..000000000 --- a/kernel/drivers/net/ethernet/hisilicon/hip04_mdio.c +++ /dev/null @@ -1,186 +0,0 @@ -/* Copyright (c) 2014 Linaro Ltd. - * Copyright (c) 2014 Hisilicon Limited. - * - * 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/platform_device.h> -#include <linux/io.h> -#include <linux/of_mdio.h> -#include <linux/delay.h> - -#define MDIO_CMD_REG 0x0 -#define MDIO_ADDR_REG 0x4 -#define MDIO_WDATA_REG 0x8 -#define MDIO_RDATA_REG 0xc -#define MDIO_STA_REG 0x10 - -#define MDIO_START BIT(14) -#define MDIO_R_VALID BIT(1) -#define MDIO_READ (BIT(12) | BIT(11) | MDIO_START) -#define MDIO_WRITE (BIT(12) | BIT(10) | MDIO_START) - -struct hip04_mdio_priv { - void __iomem *base; -}; - -#define WAIT_TIMEOUT 10 -static int hip04_mdio_wait_ready(struct mii_bus *bus) -{ - struct hip04_mdio_priv *priv = bus->priv; - int i; - - for (i = 0; readl_relaxed(priv->base + MDIO_CMD_REG) & MDIO_START; i++) { - if (i == WAIT_TIMEOUT) - return -ETIMEDOUT; - msleep(20); - } - - return 0; -} - -static int hip04_mdio_read(struct mii_bus *bus, int mii_id, int regnum) -{ - struct hip04_mdio_priv *priv = bus->priv; - u32 val; - int ret; - - ret = hip04_mdio_wait_ready(bus); - if (ret < 0) - goto out; - - val = regnum | (mii_id << 5) | MDIO_READ; - writel_relaxed(val, priv->base + MDIO_CMD_REG); - - ret = hip04_mdio_wait_ready(bus); - if (ret < 0) - goto out; - - val = readl_relaxed(priv->base + MDIO_STA_REG); - if (val & MDIO_R_VALID) { - dev_err(bus->parent, "SMI bus read not valid\n"); - ret = -ENODEV; - goto out; - } - - val = readl_relaxed(priv->base + MDIO_RDATA_REG); - ret = val & 0xFFFF; -out: - return ret; -} - -static int hip04_mdio_write(struct mii_bus *bus, int mii_id, - int regnum, u16 value) -{ - struct hip04_mdio_priv *priv = bus->priv; - u32 val; - int ret; - - ret = hip04_mdio_wait_ready(bus); - if (ret < 0) - goto out; - - writel_relaxed(value, priv->base + MDIO_WDATA_REG); - val = regnum | (mii_id << 5) | MDIO_WRITE; - writel_relaxed(val, priv->base + MDIO_CMD_REG); -out: - return ret; -} - -static int hip04_mdio_reset(struct mii_bus *bus) -{ - int temp, i; - - for (i = 0; i < PHY_MAX_ADDR; i++) { - hip04_mdio_write(bus, i, 22, 0); - temp = hip04_mdio_read(bus, i, MII_BMCR); - if (temp < 0) - continue; - - temp |= BMCR_RESET; - if (hip04_mdio_write(bus, i, MII_BMCR, temp) < 0) - continue; - } - - mdelay(500); - return 0; -} - -static int hip04_mdio_probe(struct platform_device *pdev) -{ - struct resource *r; - struct mii_bus *bus; - struct hip04_mdio_priv *priv; - int ret; - - bus = mdiobus_alloc_size(sizeof(struct hip04_mdio_priv)); - if (!bus) { - dev_err(&pdev->dev, "Cannot allocate MDIO bus\n"); - return -ENOMEM; - } - - bus->name = "hip04_mdio_bus"; - bus->read = hip04_mdio_read; - bus->write = hip04_mdio_write; - bus->reset = hip04_mdio_reset; - snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(&pdev->dev)); - bus->parent = &pdev->dev; - priv = bus->priv; - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - priv->base = devm_ioremap_resource(&pdev->dev, r); - if (IS_ERR(priv->base)) { - ret = PTR_ERR(priv->base); - goto out_mdio; - } - - ret = of_mdiobus_register(bus, pdev->dev.of_node); - if (ret < 0) { - dev_err(&pdev->dev, "Cannot register MDIO bus (%d)\n", ret); - goto out_mdio; - } - - platform_set_drvdata(pdev, bus); - - return 0; - -out_mdio: - mdiobus_free(bus); - return ret; -} - -static int hip04_mdio_remove(struct platform_device *pdev) -{ - struct mii_bus *bus = platform_get_drvdata(pdev); - - mdiobus_unregister(bus); - mdiobus_free(bus); - - return 0; -} - -static const struct of_device_id hip04_mdio_match[] = { - { .compatible = "hisilicon,hip04-mdio" }, - { } -}; -MODULE_DEVICE_TABLE(of, hip04_mdio_match); - -static struct platform_driver hip04_mdio_driver = { - .probe = hip04_mdio_probe, - .remove = hip04_mdio_remove, - .driver = { - .name = "hip04-mdio", - .owner = THIS_MODULE, - .of_match_table = hip04_mdio_match, - }, -}; - -module_platform_driver(hip04_mdio_driver); - -MODULE_DESCRIPTION("HISILICON P04 MDIO interface driver"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:hip04-mdio"); |