hwrng: bcm63xx - Remove since bcm2835-rng takes over

bcm2835-rng is now capable of supporting the BCM63xx hardware, so remove
the driver which duplicates the same functionality.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index f13482e..90e4bb2 100644 (file)
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -73,19 +73,6 @@ config HW_RANDOM_ATMEL
 
          If unsure, say Y.
 
-config HW_RANDOM_BCM63XX
-       tristate "Broadcom BCM63xx Random Number Generator support"
-       depends on BCM63XX || BMIPS_GENERIC
-       default HW_RANDOM
-       ---help---
-         This driver provides kernel-side support for the Random Number
-         Generator hardware found on the Broadcom BCM63xx SoCs.
-
-         To compile this driver as a module, choose M here: the
-         module will be called bcm63xx-rng
-
-         If unusure, say Y.
-
 config HW_RANDOM_BCM2835
        tristate "Broadcom BCM2835/BCM63xx Random Number Generator support"
        depends on ARCH_BCM2835 || ARCH_BCM_NSP || ARCH_BCM_5301X || \

diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile
index f3728d0..e7146a8 100644 (file)
--- a/drivers/char/hw_random/Makefile
+++ b/drivers/char/hw_random/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += timeriomem-rng.o
 obj-$(CONFIG_HW_RANDOM_INTEL) += intel-rng.o
 obj-$(CONFIG_HW_RANDOM_AMD) += amd-rng.o
 obj-$(CONFIG_HW_RANDOM_ATMEL) += atmel-rng.o
-obj-$(CONFIG_HW_RANDOM_BCM63XX)        += bcm63xx-rng.o
 obj-$(CONFIG_HW_RANDOM_GEODE) += geode-rng.o
 obj-$(CONFIG_HW_RANDOM_N2RNG) += n2-rng.o
 n2-rng-y := n2-drv.o n2-asm.o

diff --git a/drivers/char/hw_random/bcm63xx-rng.c b/drivers/char/hw_random/bcm63xx-rng.c
deleted file mode 100644 (file)
index 5132c9c..0000000
--- a/drivers/char/hw_random/bcm63xx-rng.c
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- * Broadcom BCM63xx Random Number Generator support
- *
- * Copyright (C) 2011, Florian Fainelli <florian@openwrt.org>
- * Copyright (C) 2009, Broadcom Corporation
- *
- */
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-#include <linux/hw_random.h>
-#include <linux/of.h>
-
-#define RNG_CTRL                       0x00
-#define RNG_EN                         (1 << 0)
-
-#define RNG_STAT                       0x04
-#define RNG_AVAIL_MASK                 (0xff000000)
-
-#define RNG_DATA                       0x08
-#define RNG_THRES                      0x0c
-#define RNG_MASK                       0x10
-
-struct bcm63xx_rng_priv {
-       struct hwrng rng;
-       struct clk *clk;
-       void __iomem *regs;
-};
-
-#define to_rng_priv(rng)       container_of(rng, struct bcm63xx_rng_priv, rng)
-
-static int bcm63xx_rng_init(struct hwrng *rng)
-{
-       struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-       u32 val;
-       int error;
-
-       error = clk_prepare_enable(priv->clk);
-       if (error)
-               return error;
-
-       val = __raw_readl(priv->regs + RNG_CTRL);
-       val |= RNG_EN;
-       __raw_writel(val, priv->regs + RNG_CTRL);
-
-       return 0;
-}
-
-static void bcm63xx_rng_cleanup(struct hwrng *rng)
-{
-       struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-       u32 val;
-
-       val = __raw_readl(priv->regs + RNG_CTRL);
-       val &= ~RNG_EN;
-       __raw_writel(val, priv->regs + RNG_CTRL);
-
-       clk_disable_unprepare(priv->clk);
-}
-
-static int bcm63xx_rng_data_present(struct hwrng *rng, int wait)
-{
-       struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-
-       return __raw_readl(priv->regs + RNG_STAT) & RNG_AVAIL_MASK;
-}
-
-static int bcm63xx_rng_data_read(struct hwrng *rng, u32 *data)
-{
-       struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-
-       *data = __raw_readl(priv->regs + RNG_DATA);
-
-       return 4;
-}
-
-static int bcm63xx_rng_probe(struct platform_device *pdev)
-{
-       struct resource *r;
-       int ret;
-       struct bcm63xx_rng_priv *priv;
-
-       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!r) {
-               dev_err(&pdev->dev, "no iomem resource\n");
-               return -ENXIO;
-       }
-
-       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-       if (!priv)
-               return -ENOMEM;
-
-       priv->rng.name = pdev->name;
-       priv->rng.init = bcm63xx_rng_init;
-       priv->rng.cleanup = bcm63xx_rng_cleanup;
-       priv->rng.data_present = bcm63xx_rng_data_present;
-       priv->rng.data_read = bcm63xx_rng_data_read;
-
-       priv->clk = devm_clk_get(&pdev->dev, "ipsec");
-       if (IS_ERR(priv->clk)) {
-               ret = PTR_ERR(priv->clk);
-               dev_err(&pdev->dev, "no clock for device: %d\n", ret);
-               return ret;
-       }
-
-       if (!devm_request_mem_region(&pdev->dev, r->start,
-                                       resource_size(r), pdev->name)) {
-               dev_err(&pdev->dev, "request mem failed");
-               return -EBUSY;
-       }
-
-       priv->regs = devm_ioremap_nocache(&pdev->dev, r->start,
-                                       resource_size(r));
-       if (!priv->regs) {
-               dev_err(&pdev->dev, "ioremap failed");
-               return -ENOMEM;
-       }
-
-       ret = devm_hwrng_register(&pdev->dev, &priv->rng);
-       if (ret) {
-               dev_err(&pdev->dev, "failed to register rng device: %d\n",
-                       ret);
-               return ret;
-       }
-
-       dev_info(&pdev->dev, "registered RNG driver\n");
-
-       return 0;
-}
-
-#ifdef CONFIG_OF
-static const struct of_device_id bcm63xx_rng_of_match[] = {
-       { .compatible = "brcm,bcm6368-rng", },
-       {},
-};
-MODULE_DEVICE_TABLE(of, bcm63xx_rng_of_match);
-#endif
-
-static struct platform_driver bcm63xx_rng_driver = {
-       .probe          = bcm63xx_rng_probe,
-       .driver         = {
-               .name   = "bcm63xx-rng",
-               .of_match_table = of_match_ptr(bcm63xx_rng_of_match),
-       },
-};
-
-module_platform_driver(bcm63xx_rng_driver);
-
-MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
-MODULE_DESCRIPTION("Broadcom BCM63xx RNG driver");
-MODULE_LICENSE("GPL");