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Diffstat (limited to 'target/linux/brcm63xx/patches-3.3/021-hw_random-add-Broadcom-BCM63xx-RNG-driver.patch')
-rw-r--r--target/linux/brcm63xx/patches-3.3/021-hw_random-add-Broadcom-BCM63xx-RNG-driver.patch229
1 files changed, 0 insertions, 229 deletions
diff --git a/target/linux/brcm63xx/patches-3.3/021-hw_random-add-Broadcom-BCM63xx-RNG-driver.patch b/target/linux/brcm63xx/patches-3.3/021-hw_random-add-Broadcom-BCM63xx-RNG-driver.patch
deleted file mode 100644
index 7e66fd5..0000000
--- a/target/linux/brcm63xx/patches-3.3/021-hw_random-add-Broadcom-BCM63xx-RNG-driver.patch
+++ /dev/null
@@ -1,229 +0,0 @@
-From 1cfc5c76c5f48359716bd804daef2f2f7554fb4a Mon Sep 17 00:00:00 2001
-From: Florian Fainelli <florian@openwrt.org>
-Date: Tue, 31 Jan 2012 15:12:25 +0100
-Subject: [PATCH 6/6] hw_random: add Broadcom BCM63xx RNG driver
-
-Signed-off-by: Florian Fainelli <florian@openwrt.org>
-Cc: linux-mips@linux-mips.org
-Cc: mpm@selenic.com
-Cc: herbert@gondor.apana.org.au
-Patchwork: https://patchwork.linux-mips.org/patch/3327/
-Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
----
- drivers/char/hw_random/Kconfig | 14 +++
- drivers/char/hw_random/Makefile | 1 +
- drivers/char/hw_random/bcm63xx-rng.c | 175 ++++++++++++++++++++++++++++++++++
- 3 files changed, 190 insertions(+), 0 deletions(-)
- create mode 100644 drivers/char/hw_random/bcm63xx-rng.c
-
---- a/drivers/char/hw_random/Kconfig
-+++ b/drivers/char/hw_random/Kconfig
-@@ -73,6 +73,20 @@ config HW_RANDOM_ATMEL
-
- If unsure, say Y.
-
-+config HW_RANDOM_BCM63XX
-+ tristate "Broadcom BCM63xx Random Number Generator support"
-+ depends on HW_RANDOM && BCM63XX
-+ 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_GEODE
- tristate "AMD Geode HW Random Number Generator support"
- depends on HW_RANDOM && X86_32 && PCI
---- a/drivers/char/hw_random/Makefile
-+++ b/drivers/char/hw_random/Makefile
-@@ -8,6 +8,7 @@ obj-$(CONFIG_HW_RANDOM_TIMERIOMEM) += ti
- obj-$(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
---- /dev/null
-+++ b/drivers/char/hw_random/bcm63xx-rng.c
-@@ -0,0 +1,175 @@
-+/*
-+ * 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 <bcm63xx_io.h>
-+#include <bcm63xx_regs.h>
-+
-+struct bcm63xx_rng_priv {
-+ struct clk *clk;
-+ void __iomem *regs;
-+};
-+
-+#define to_rng_priv(rng) ((struct bcm63xx_rng_priv *)rng->priv)
-+
-+static int bcm63xx_rng_init(struct hwrng *rng)
-+{
-+ struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-+ u32 val;
-+
-+ val = bcm_readl(priv->regs + RNG_CTRL);
-+ val |= RNG_EN;
-+ bcm_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 = bcm_readl(priv->regs + RNG_CTRL);
-+ val &= ~RNG_EN;
-+ bcm_writel(val, priv->regs + RNG_CTRL);
-+}
-+
-+static int bcm63xx_rng_data_present(struct hwrng *rng, int wait)
-+{
-+ struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-+
-+ return bcm_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 = bcm_readl(priv->regs + RNG_DATA);
-+
-+ return 4;
-+}
-+
-+static int __init bcm63xx_rng_probe(struct platform_device *pdev)
-+{
-+ struct resource *r;
-+ struct clk *clk;
-+ int ret;
-+ struct bcm63xx_rng_priv *priv;
-+ struct hwrng *rng;
-+
-+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!r) {
-+ dev_err(&pdev->dev, "no iomem resource\n");
-+ ret = -ENXIO;
-+ goto out;
-+ }
-+
-+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-+ if (!priv) {
-+ dev_err(&pdev->dev, "no memory for private structure\n");
-+ ret = -ENOMEM;
-+ goto out;
-+ }
-+
-+ rng = kzalloc(sizeof(*rng), GFP_KERNEL);
-+ if (!rng) {
-+ dev_err(&pdev->dev, "no memory for rng structure\n");
-+ ret = -ENOMEM;
-+ goto out_free_priv;
-+ }
-+
-+ platform_set_drvdata(pdev, rng);
-+ rng->priv = (unsigned long)priv;
-+ rng->name = pdev->name;
-+ rng->init = bcm63xx_rng_init;
-+ rng->cleanup = bcm63xx_rng_cleanup;
-+ rng->data_present = bcm63xx_rng_data_present;
-+ rng->data_read = bcm63xx_rng_data_read;
-+
-+ clk = clk_get(&pdev->dev, "ipsec");
-+ if (IS_ERR(clk)) {
-+ dev_err(&pdev->dev, "no clock for device\n");
-+ ret = PTR_ERR(clk);
-+ goto out_free_rng;
-+ }
-+
-+ priv->clk = clk;
-+
-+ if (!devm_request_mem_region(&pdev->dev, r->start,
-+ resource_size(r), pdev->name)) {
-+ dev_err(&pdev->dev, "request mem failed");
-+ ret = -ENOMEM;
-+ goto out_free_rng;
-+ }
-+
-+ priv->regs = devm_ioremap_nocache(&pdev->dev, r->start,
-+ resource_size(r));
-+ if (!priv->regs) {
-+ dev_err(&pdev->dev, "ioremap failed");
-+ ret = -ENOMEM;
-+ goto out_free_rng;
-+ }
-+
-+ clk_enable(clk);
-+
-+ ret = hwrng_register(rng);
-+ if (ret) {
-+ dev_err(&pdev->dev, "failed to register rng device\n");
-+ goto out_clk_disable;
-+ }
-+
-+ dev_info(&pdev->dev, "registered RNG driver\n");
-+
-+ return 0;
-+
-+out_clk_disable:
-+ clk_disable(clk);
-+out_free_rng:
-+ platform_set_drvdata(pdev, NULL);
-+ kfree(rng);
-+out_free_priv:
-+ kfree(priv);
-+out:
-+ return ret;
-+}
-+
-+static int __devexit bcm63xx_rng_remove(struct platform_device *pdev)
-+{
-+ struct hwrng *rng = platform_get_drvdata(pdev);
-+ struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
-+
-+ hwrng_unregister(rng);
-+ clk_disable(priv->clk);
-+ kfree(priv);
-+ kfree(rng);
-+ platform_set_drvdata(pdev, NULL);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver bcm63xx_rng_driver = {
-+ .probe = bcm63xx_rng_probe,
-+ .remove = __devexit_p(bcm63xx_rng_remove),
-+ .driver = {
-+ .name = "bcm63xx-rng",
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+module_platform_driver(bcm63xx_rng_driver);
-+
-+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
-+MODULE_DESCRIPTION("Broadcom BCM63xx RNG driver");
-+MODULE_LICENSE("GPL");
generated by cgit v1.1 at 2024-07-10 11:43:17 +0000