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Wed, 09 Jul 2014 13:03:36 +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 v7 1/4] ARM: EXYNOS: Add support for mapping PMU base address via DT Date: Wed, 09 Jul 2014 09:30:52 +0530 Message-id: <1404878455-31518-2-git-send-email-pankaj.dubey@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1404878455-31518-1-git-send-email-pankaj.dubey@samsung.com> References: <1404878455-31518-1-git-send-email-pankaj.dubey@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupgkeLIzCtJLcpLzFFi42JZI2JSpyuxf0+wwawNyhbLJt1ls/i+6wu7 Re+Cq2wWmx5fY7W4vGsOm8WM8/uYLG5f5rX4dPQ/q8WirUAV62e8ZrHoWMZocfPZdiYHHo+W 5h42j81L6j36tqxi9Pi8SS6AJYrLJiU1J7MstUjfLoEro/vNc5aCHrGKjd9vMDcwHhTqYuTk kBAwkdjQe50ZwhaTuHBvPVsXIxeHkMBSRokPx5aywxQ9WrIXKrGIUWL5wz/sEM4EJonu21/Z QKrYBHQlnryfCzZKRCBbov/2ahaQImaBx4wSb1YeZQRJCAuESXzd/hKsiEVAVeLMuilgzbwC HhJbpt0DauAAWqcgMWeSDUiYU8BTomX6crASIaCSM+s2sILMlBDYxC6x9slqVog5AhLfJh+C 6pWV2HQA6h1JiYMrbrBMYBRewMiwilE0tSC5oDgpvchUrzgxt7g0L10vOT93EyMwFk7/ezZx B+P9A9aHGJOBxk1klhJNzgfGUl5JvKGxmZGFqYmpsZG5pRlpwkrivOmPkoKEBNITS1KzU1ML Uovii0pzUosPMTJxcEo1MFaYSDpMXrlyFvO0hYfm1Xjcvao5ldHVId4jz87FNr2f22duwVRv Hg8ppdde4tvPRh46KVEby6vUO/HCzrrAs3sW5cloLp295aKuJ2vy7fCPZg1tNoJcL6r4Hgv9 PF6wp1zpj9osxSfXIq+vO2sYpqcygemifbzhOQ6FEDadztUT7u6IiPigqsRSnJFoqMVcVJwI AOR9FICbAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrOIsWRmVeSWpSXmKPExsVy+t9jAV2J/XuCDT78kLRYNukum8X3XV/Y LXoXXGWz2PT4GqvF5V1z2CxmnN/HZHH7Mq/Fp6P/WS0WbQWqWD/jNYtFxzJGi5vPtjM58Hi0 NPeweWxeUu/Rt2UVo8fnTXIBLFENjDYZqYkpqUUKqXnJ+SmZeem2St7B8c7xpmYGhrqGlhbm Sgp5ibmptkouPgG6bpk5QIcpKZQl5pQChQISi4uV9O0wTQgNcdO1gGmM0PUNCYLrMTJAAwlr GDO63zxnKegRq9j4/QZzA+NBoS5GTg4JAROJR0v2skHYYhIX7q0Hsrk4hAQWMUosf/iHHcKZ wCTRffsrWBUbMJyevJ/LDGKLCGRL9N9ezQJSxCzwmFHizcqjjCAJYYEwia/bX4IVsQioSpxZ NwWsmVfAQ2LLtHtADRxA6xQk5kyyAQlzCnhKtExfDlYiBFRyZt0G1gmMvAsYGVYxiqYWJBcU J6XnGuoVJ+YWl+al6yXn525iBEfaM6kdjCsbLA4xCnAwKvHwKvDsCRZiTSwrrsw9xCjBwawk wvvNDSjEm5JYWZValB9fVJqTWnyI0RToqInMUqLJ+cAkkFcSb2hsYm5qbGppYmFiZqkkznug 1TpQSCA9sSQ1OzW1ILUIpo+Jg1OqgTGCs1vl0/VH1yNPJMllhSXr+lct1BbdxCay4ZRXUjbn hl2J0XMPf9i2ZPXm9BW7FJl2Tme0P7RtUuTynnnXSiVvJ/88+O7Te5MC8da50+t5/xW7T2rN XLNxdQ3jQuXobctCj+leVp167ta17Cqx8lqu/rl8FyeXTrDQNXnOvPTDCy1xpX1XOkWUWIoz Eg21mIuKEwEEr9/RygIAAA== 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-20140708_210407_000687_D3090ECE X-CRM114-Status: GOOD ( 12.47 ) 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,