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author | Florian Fainelli <f.fainelli@gmail.com> | 2016-05-20 18:35:57 (GMT) |
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committer | Florian Fainelli <f.fainelli@gmail.com> | 2016-05-31 18:06:34 (GMT) |
commit | 34642650e5bc052674b982433631fcc619237225 (patch) | |
tree | 383de7808001700460f631f41bf354b30c118702 /drivers/soc/brcmstb/biuctrl.c | |
parent | 1a695a905c18548062509178b98bc91e67510864 (diff) | |
download | linux-34642650e5bc052674b982433631fcc619237225.tar.xz |
soc: Move brcmstb to bcm/brcmstb
Unify the different Broadcom SoCs directory and have everybody live
under drivers/soc/bcm/*.
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Diffstat (limited to 'drivers/soc/brcmstb/biuctrl.c')
-rw-r--r-- | drivers/soc/brcmstb/biuctrl.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/drivers/soc/brcmstb/biuctrl.c b/drivers/soc/brcmstb/biuctrl.c deleted file mode 100644 index 9049c076f..0000000 --- a/drivers/soc/brcmstb/biuctrl.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Broadcom STB SoCs Bus Unit Interface controls - * - * Copyright (C) 2015, Broadcom 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#define pr_fmt(fmt) "brcmstb: " KBUILD_MODNAME ": " fmt - -#include <linux/kernel.h> -#include <linux/io.h> -#include <linux/of_address.h> -#include <linux/syscore_ops.h> - -#define CPU_CREDIT_REG_OFFSET 0x184 -#define CPU_CREDIT_REG_MCPx_WR_PAIRING_EN_MASK 0x70000000 - -static void __iomem *cpubiuctrl_base; -static bool mcp_wr_pairing_en; - -static int __init mcp_write_pairing_set(void) -{ - u32 creds = 0; - - if (!cpubiuctrl_base) - return -1; - - creds = readl_relaxed(cpubiuctrl_base + CPU_CREDIT_REG_OFFSET); - if (mcp_wr_pairing_en) { - pr_info("MCP: Enabling write pairing\n"); - writel_relaxed(creds | CPU_CREDIT_REG_MCPx_WR_PAIRING_EN_MASK, - cpubiuctrl_base + CPU_CREDIT_REG_OFFSET); - } else if (creds & CPU_CREDIT_REG_MCPx_WR_PAIRING_EN_MASK) { - pr_info("MCP: Disabling write pairing\n"); - writel_relaxed(creds & ~CPU_CREDIT_REG_MCPx_WR_PAIRING_EN_MASK, - cpubiuctrl_base + CPU_CREDIT_REG_OFFSET); - } else { - pr_info("MCP: Write pairing already disabled\n"); - } - - return 0; -} - -static int __init setup_hifcpubiuctrl_regs(void) -{ - struct device_node *np; - int ret = 0; - - np = of_find_compatible_node(NULL, NULL, "brcm,brcmstb-cpu-biu-ctrl"); - if (!np) { - pr_err("missing BIU control node\n"); - return -ENODEV; - } - - cpubiuctrl_base = of_iomap(np, 0); - if (!cpubiuctrl_base) { - pr_err("failed to remap BIU control base\n"); - ret = -ENOMEM; - goto out; - } - - mcp_wr_pairing_en = of_property_read_bool(np, "brcm,write-pairing"); -out: - of_node_put(np); - return ret; -} - -#ifdef CONFIG_PM_SLEEP -static u32 cpu_credit_reg_dump; /* for save/restore */ - -static int brcmstb_cpu_credit_reg_suspend(void) -{ - if (cpubiuctrl_base) - cpu_credit_reg_dump = - readl_relaxed(cpubiuctrl_base + CPU_CREDIT_REG_OFFSET); - return 0; -} - -static void brcmstb_cpu_credit_reg_resume(void) -{ - if (cpubiuctrl_base) - writel_relaxed(cpu_credit_reg_dump, - cpubiuctrl_base + CPU_CREDIT_REG_OFFSET); -} - -static struct syscore_ops brcmstb_cpu_credit_syscore_ops = { - .suspend = brcmstb_cpu_credit_reg_suspend, - .resume = brcmstb_cpu_credit_reg_resume, -}; -#endif - - -void __init brcmstb_biuctrl_init(void) -{ - int ret; - - setup_hifcpubiuctrl_regs(); - - ret = mcp_write_pairing_set(); - if (ret) { - pr_err("MCP: Unable to disable write pairing!\n"); - return; - } - -#ifdef CONFIG_PM_SLEEP - register_syscore_ops(&brcmstb_cpu_credit_syscore_ops); -#endif -} |