diff options
Diffstat (limited to 'target/linux/mediatek/patches/0006-soc-mediatek-Add-infracfg-misc-driver-support.patch')
| -rw-r--r-- | target/linux/mediatek/patches/0006-soc-mediatek-Add-infracfg-misc-driver-support.patch | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/target/linux/mediatek/patches/0006-soc-mediatek-Add-infracfg-misc-driver-support.patch b/target/linux/mediatek/patches/0006-soc-mediatek-Add-infracfg-misc-driver-support.patch deleted file mode 100644 index 96652d4998..0000000000 --- a/target/linux/mediatek/patches/0006-soc-mediatek-Add-infracfg-misc-driver-support.patch +++ /dev/null @@ -1,166 +0,0 @@ -From d6d7a7dc1b7db2e3d496bf67b30abc894edbc4bd Mon Sep 17 00:00:00 2001 -From: Sascha Hauer <s.hauer@pengutronix.de> -Date: Tue, 9 Jun 2015 10:46:59 +0200 -Subject: [PATCH 06/76] soc: mediatek: Add infracfg misc driver support - -This adds support for some miscellaneous bits of the infracfg controller. -The mtk_infracfg_set/clear_bus_protection functions are necessary for -the scpsys power domain driver to handle the bus protection bits which -are contained in the infacfg register space. - -Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> ---- - drivers/soc/mediatek/Kconfig | 9 ++++ - drivers/soc/mediatek/Makefile | 1 + - drivers/soc/mediatek/mtk-infracfg.c | 91 +++++++++++++++++++++++++++++++++ - include/linux/soc/mediatek/infracfg.h | 26 ++++++++++ - 4 files changed, 127 insertions(+) - create mode 100644 drivers/soc/mediatek/mtk-infracfg.c - create mode 100644 include/linux/soc/mediatek/infracfg.h - ---- a/drivers/soc/mediatek/Kconfig -+++ b/drivers/soc/mediatek/Kconfig -@@ -1,6 +1,15 @@ - # - # MediaTek SoC drivers - # -+config MTK_INFRACFG -+ bool "MediaTek INFRACFG Support" -+ depends on ARCH_MEDIATEK -+ select REGMAP -+ help -+ Say yes here to add support for the MediaTek INFRACFG controller. The -+ INFRACFG controller contains various infrastructure registers not -+ directly associated to any device. -+ - config MTK_PMIC_WRAP - tristate "MediaTek PMIC Wrapper Support" - depends on ARCH_MEDIATEK ---- a/drivers/soc/mediatek/Makefile -+++ b/drivers/soc/mediatek/Makefile -@@ -1 +1,2 @@ -+obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o - obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o ---- /dev/null -+++ b/drivers/soc/mediatek/mtk-infracfg.c -@@ -0,0 +1,91 @@ -+/* -+ * Copyright (c) 2015 Pengutronix, Sascha Hauer <kernel@pengutronix.de> -+ * -+ * 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. -+ */ -+ -+#include <linux/export.h> -+#include <linux/jiffies.h> -+#include <linux/regmap.h> -+#include <linux/soc/mediatek/infracfg.h> -+#include <asm/processor.h> -+ -+#define INFRA_TOPAXI_PROTECTEN 0x0220 -+#define INFRA_TOPAXI_PROTECTSTA1 0x0228 -+ -+/** -+ * mtk_infracfg_set_bus_protection - enable bus protection -+ * @regmap: The infracfg regmap -+ * @mask: The mask containing the protection bits to be enabled. -+ * -+ * This function enables the bus protection bits for disabled power -+ * domains so that the system does not hanf when some unit accesses the -+ * bus while in power down. -+ */ -+int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask) -+{ -+ unsigned long expired; -+ u32 val; -+ int ret; -+ -+ regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, mask); -+ -+ expired = jiffies + HZ; -+ -+ while (1) { -+ ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val); -+ if (ret) -+ return ret; -+ -+ if ((val & mask) == mask) -+ break; -+ -+ cpu_relax(); -+ if (time_after(jiffies, expired)) -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+/** -+ * mtk_infracfg_clear_bus_protection - disable bus protection -+ * @regmap: The infracfg regmap -+ * @mask: The mask containing the protection bits to be disabled. -+ * -+ * This function disables the bus protection bits previously enabled with -+ * mtk_infracfg_set_bus_protection. -+ */ -+int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask) -+{ -+ unsigned long expired; -+ int ret; -+ -+ regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0); -+ -+ expired = jiffies + HZ; -+ -+ while (1) { -+ u32 val; -+ -+ ret = regmap_read(infracfg, INFRA_TOPAXI_PROTECTSTA1, &val); -+ if (ret) -+ return ret; -+ -+ if (!(val & mask)) -+ break; -+ -+ cpu_relax(); -+ if (time_after(jiffies, expired)) -+ return -EIO; -+ } -+ -+ return 0; -+} ---- /dev/null -+++ b/include/linux/soc/mediatek/infracfg.h -@@ -0,0 +1,26 @@ -+#ifndef __SOC_MEDIATEK_INFRACFG_H -+#define __SOC_MEDIATEK_INFRACFG_H -+ -+#define MT8173_TOP_AXI_PROT_EN_MCI_M2 BIT(0) -+#define MT8173_TOP_AXI_PROT_EN_MM_M0 BIT(1) -+#define MT8173_TOP_AXI_PROT_EN_MM_M1 BIT(2) -+#define MT8173_TOP_AXI_PROT_EN_MMAPB_S BIT(6) -+#define MT8173_TOP_AXI_PROT_EN_L2C_M2 BIT(9) -+#define MT8173_TOP_AXI_PROT_EN_L2SS_SMI BIT(11) -+#define MT8173_TOP_AXI_PROT_EN_L2SS_ADD BIT(12) -+#define MT8173_TOP_AXI_PROT_EN_CCI_M2 BIT(13) -+#define MT8173_TOP_AXI_PROT_EN_MFG_S BIT(14) -+#define MT8173_TOP_AXI_PROT_EN_PERI_M0 BIT(15) -+#define MT8173_TOP_AXI_PROT_EN_PERI_M1 BIT(16) -+#define MT8173_TOP_AXI_PROT_EN_DEBUGSYS BIT(17) -+#define MT8173_TOP_AXI_PROT_EN_CQ_DMA BIT(18) -+#define MT8173_TOP_AXI_PROT_EN_GCPU BIT(19) -+#define MT8173_TOP_AXI_PROT_EN_IOMMU BIT(20) -+#define MT8173_TOP_AXI_PROT_EN_MFG_M0 BIT(21) -+#define MT8173_TOP_AXI_PROT_EN_MFG_M1 BIT(22) -+#define MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT BIT(23) -+ -+int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask); -+int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask); -+ -+#endif /* __SOC_MEDIATEK_INFRACFG_H */ |