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Mon, 07 Jul 2014 14:22:14 +0900 (KST) From: Pankaj Dubey To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 1/4] ARM: EXYNOS: Add support for mapping PMU base address via DT Date: Mon, 07 Jul 2014 10:49:33 +0530 Message-id: <1404710376-16448-2-git-send-email-pankaj.dubey@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1404710376-16448-1-git-send-email-pankaj.dubey@samsung.com> References: <1404710376-16448-1-git-send-email-pankaj.dubey@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupgkeLIzCtJLcpLzFFi42JZI2JSq9uutyvY4M0WNotlk+6yWXzf9YXd onfBVTaLTY+vsVpc3jWHzWLG+X1MFrcv81p8Ovqf1WLRVqCK9TNes1h0LGO0uPlsO5MDj0dL cw+bx+Yl9R59W1YxenzeJBfAEsVlk5Kak1mWWqRvl8CVMffIX/aCu6IV0w60MTYwThfqYuTk kBAwkXi+o4MdwhaTuHBvPVsXIxeHkMBSRomOt//YYIq+rj7EDJFYxChxa9cmqKoJTBKbG/uY QKrYBHQlnryfywxiiwhkS/TfXs0CUsQs8JhR4s3Ko4wgCWGBMImZPevAbBYBVYnDc2aDNfAK eEjcev0DaBAH0DoFiTmTbEDCnAKeEpNf7we7Qgio5O3SP0wgMyUEtrFLvLm9lRlijoDEt8mH WCB6ZSU2HWCGuFpS4uCKGywTGIUXMDKsYhRNLUguKE5KLzLVK07MLS7NS9dLzs/dxAiMhdP/ nk3cwXj/gPUhxmSgcROZpUST84GxlFcSb2hsZmRhamJqbGRuaUaasJI4b/qjpCAhgfTEktTs 1NSC1KL4otKc1OJDjEwcnFINjNzXXwpuCDJ1033zYt6/72mTNNxTi+a831jSMl3EuKCh5odw vvvcRBbDopRycwmF8oj6zi8BH5+HZF91dDvv/EA7iO/dPJZZR5l+PtzW7C7gq2HX/Kkzomhj WeRM1RdX3256Pm/l7c9T5zi1V/fVqc9q2zApuSLmxdxSz5V9PMWKBauzin9dVGIpzkg01GIu Kk4EAMCFdQ6bAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrOIsWRmVeSWpSXmKPExsVy+t9jAd02vV3BBpuXWlksm3SXzeL7ri/s Fr0LrrJZbHp8jdXi8q45bBYzzu9jsrh9mdfi09H/rBaLtgJVrJ/xmsWiYxmjxc1n25kceDxa mnvYPDYvqffo27KK0ePzJrkAlqgGRpuM1MSU1CKF1Lzk/JTMvHRbJe/geOd4UzMDQ11DSwtz JYW8xNxUWyUXnwBdt8wcoMOUFMoSc0qBQgGJxcVK+naYJoSGuOlawDRG6PqGBMH1GBmggYQ1 jBlzj/xlL7grWjHtQBtjA+N0oS5GTg4JAROJr6sPMUPYYhIX7q1n62Lk4hASWMQocWvXJihn ApPE5sY+JpAqNgFdiSfv54J1iAhkS/TfXs0CUsQs8JhR4s3Ko4wgCWGBMImZPevAbBYBVYnD c2aDNfAKeEjcev0DaBAH0DoFiTmTbEDCnAKeEpNf72cDsYWASt4u/cM0gZF3ASPDKkbR1ILk guKk9FwjveLE3OLSvHS95PzcTYzgSHsmvYNxVYPFIUYBDkYlHt4Dq3YGC7EmlhVX5h5ilOBg VhLhPeMGFOJNSaysSi3Kjy8qzUktPsRoCnTURGYp0eR8YBLIK4k3NDYxNzU2tTSxMDGzVBLn PdhqHSgkkJ5YkpqdmlqQWgTTx8TBKdXAuK7jw8w5D/5f616zQJz7B+sEh7nbPBYKBehKhBSx zVjHHmN+ccV5O57r4qwMGztX7tu7N+D4t03Xpz7ubdzbdWXeucpt747ITP939senPrF9KqEb MyfeDxQXqPS6l6d1pdDInO1EA9sPL9etZQIaDvF/7Hm3XI/xSUrw0XW4XrHJIfzEm38Pvyux FGckGmoxFxUnAgA8+xnAygIAAA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140706_222240_349358_6C73B3A0 X-CRM114-Status: GOOD ( 13.31 ) X-Spam-Score: -5.7 (-----) Cc: kgene.kim@samsung.com, linux@arm.linux.org.uk, naushad@samsung.com, Pankaj Dubey , t.figa@samsung.com, joshi@samsung.com, thomas.ab@samsung.com, vikas.sajjan@samsung.com, chow.kim@samsung.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for mapping Samsung Power Management Unit (PMU) base address from device tree. Signed-off-by: Pankaj Dubey Reviewed-by: Tomasz Figa --- arch/arm/mach-exynos/common.h | 1 + arch/arm/mach-exynos/exynos.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h index 152b464..f8daa9c 100644 --- a/arch/arm/mach-exynos/common.h +++ b/arch/arm/mach-exynos/common.h @@ -113,6 +113,7 @@ IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS5_SOC_MASK) extern void __iomem *sysram_ns_base_addr; extern void __iomem *sysram_base_addr; +extern void __iomem *pmu_base_addr; void exynos_sysram_init(void); void exynos_firmware_init(void); diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 186f35d..173aac8 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -31,6 +32,8 @@ #include "regs-pmu.h" #include "regs-sys.h" +void __iomem *pmu_base_addr; + static struct map_desc exynos4_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -253,6 +256,39 @@ static void __init exynos_init_io(void) exynos_map_io(); } +static const struct of_device_id exynos_dt_pmu_match[] = { + { .compatible = "samsung,exynos3250-pmu" }, + { .compatible = "samsung,exynos4210-pmu" }, + { .compatible = "samsung,exynos4212-pmu" }, + { .compatible = "samsung,exynos4412-pmu" }, + { .compatible = "samsung,exynos5250-pmu" }, + { .compatible = "samsung,exynos5420-pmu" }, + { /*sentinel*/ }, +}; + +static void exynos_map_pmu(void) +{ + struct device_node *np; + + np = of_find_matching_node(NULL, exynos_dt_pmu_match); + if (np) + pmu_base_addr = of_iomap(np, 0); + + if (!pmu_base_addr) + panic("failed to find exynos pmu register\n"); +} + +static void __init exynos_init_irq(void) +{ + irqchip_init(); + /* + * Since platsmp.c needs pmu base address by the time + * DT is not unflatten so we can't use DT APIs before + * init_irq + */ + exynos_map_pmu(); +} + static void __init exynos_dt_machine_init(void) { struct device_node *i2c_np; @@ -336,6 +372,7 @@ DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)") .smp = smp_ops(exynos_smp_ops), .map_io = exynos_init_io, .init_early = exynos_firmware_init, + .init_irq = exynos_init_irq, .init_machine = exynos_dt_machine_init, .init_late = exynos_init_late, .dt_compat = exynos_dt_compat,