From 9626b6993b2e6faf047d2d96958e8474edc9c7a5 Mon Sep 17 00:00:00 2001 From: jilai wang Date: Fri, 10 Apr 2015 16:15:59 -0400 Subject: firmware: qcom: scm: Add HDCP Support HDCP driver needs to check if secure environment supports HDCP. If it's supported, then it requires to program some registers through SCM. Add qcom_scm_hdcp_available and qcom_scm_hdcp_req to support these requirements. Signed-off-by: Jilai Wang Signed-off-by: Kumar Gala --- include/linux/qcom_scm.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h index d7a974d5f57c..6e7d5ec65838 100644 --- a/include/linux/qcom_scm.h +++ b/include/linux/qcom_scm.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2010-2014, The Linux Foundation. All rights reserved. +/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved. * Copyright (C) 2015 Linaro Ltd. * * This program is free software; you can redistribute it and/or modify @@ -16,6 +16,17 @@ extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus); extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus); +#define QCOM_SCM_HDCP_MAX_REQ_CNT 5 + +struct qcom_scm_hdcp_req { + u32 addr; + u32 val; +}; + +extern bool qcom_scm_hdcp_available(void); +extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, + u32 *resp); + #define QCOM_SCM_CPU_PWR_DOWN_L2_ON 0x0 #define QCOM_SCM_CPU_PWR_DOWN_L2_OFF 0x1 -- cgit v1.2.3 From 4af34b572a85c44c55491a10693535a79627c478 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Mon, 1 Jun 2015 11:04:26 +0200 Subject: drivers: soc: sunxi: Introduce SoC driver to map SRAMs The Allwinner SoCs have a handful of SRAM that can be either mapped to be accessible by devices or the CPU. That mapping is controlled by an SRAM controller, and that mapping might not be set by the bootloader, for example if the device wasn't used at all, or if we're using solutions like the U-Boot's Falcon Boot. We could also imagine changing this at runtime for example to change the mapping of these SRAMs to use them for suspend/resume or runtime memory rate change, if that ever happens. These use cases require some API in the kernel to control that mapping, exported through a drivers/soc driver. This driver also implement a debugfs file that shows the SRAM found in the system, the current mapping and the SRAM that have been claimed by some drivers in the kernel. Signed-off-by: Maxime Ripard Acked-by: Arnd Bergmann Acked-by: Hans de Goede Tested-by: Hans de Goede Signed-off-by: Arnd Bergmann --- include/linux/soc/sunxi/sunxi_sram.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 include/linux/soc/sunxi/sunxi_sram.h (limited to 'include/linux') diff --git a/include/linux/soc/sunxi/sunxi_sram.h b/include/linux/soc/sunxi/sunxi_sram.h new file mode 100644 index 000000000000..c5f663bba9c2 --- /dev/null +++ b/include/linux/soc/sunxi/sunxi_sram.h @@ -0,0 +1,19 @@ +/* + * Allwinner SoCs SRAM Controller Driver + * + * Copyright (C) 2015 Maxime Ripard + * + * Author: Maxime Ripard + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef _SUNXI_SRAM_H_ +#define _SUNXI_SRAM_H_ + +int sunxi_sram_claim(struct device *dev); +int sunxi_sram_release(struct device *dev); + +#endif /* _SUNXI_SRAM_H_ */ -- cgit v1.2.3