From patchwork Tue Jul 12 18:31:15 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [v2] new helper to define common struct resource constructs From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 104417 Message-Id: <1310495475-22469-1-git-send-email-u.kleine-koenig@pengutronix.de> To: linux-arm-kernel@lists.infradead.org Cc: Arnd Bergmann , Sascha Hauer , linux-kernel@vger.kernel.org, Wolfram Sang , thierry.nolf.barco@gmail.com, Huang Shijie , linux-mtd@lists.infradead.org, H Hartley Sweeten , Andrew Morton , =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Date: Tue, 12 Jul 2011 20:31:15 +0200 resource definitions that just define start, end and flags = IORESOURCE_MEM or IORESOURCE_IRQ (with start=end) are quite common. So introduce a shortcut for them. For completeness add macros for IORESOURCE_DMA and IORESOURCE_IO, too and also make available a set of macros to specify named resources of all types. Signed-off-by: Uwe Kleine-König --- changes since v1: - also add _IO and _DMA variants include/linux/ioport.h | 30 ++++++++++++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 63eb429..f98124f 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -109,6 +109,36 @@ struct resource_list { /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ + +/* helpers to define resources */ +#define DEFINE_RES_NAMED(_start, _size, _name, _flags) \ + { \ + .start = _start, \ + .end = _start + _size - 1, \ + .name = _name, \ + .flags = _flags, \ + } + +#define DEFINE_RES_IO_NAMED(_start, _size, _name) \ + DEFINE_RES_NAMED(_start, _size, _name, IORESOURCE_IO) +#define DEFINE_RES_IO(_start, _size) \ + DEFINE_RES_IO_NAMED(_start, _size, NULL) + +#define DEFINE_RES_MEM_NAMED(_start, _size, _name) \ + DEFINE_RES_NAMED(_start, _size, _name, IORESOURCE_MEM) +#define DEFINE_RES_MEM(_start, _size) \ + DEFINE_RES_MEM_NAMED(_start, _size, NULL) + +#define DEFINE_RES_IRQ_NAMED(_irq, _name) \ + DEFINE_RES_NAMED(_irq, 1, _name, IORESOURCE_IRQ) +#define DEFINE_RES_IRQ(_irq) \ + DEFINE_RES_IRQ_NAMED(_irq, NULL) + +#define DEFINE_RES_DMA_NAMED(_dma, _name) \ + DEFINE_RES_NAMED(_dma, 1, _name, IORESOURCE_DMA) +#define DEFINE_RES_DMA(_dma) \ + DEFINE_RES_DMA_NAMED(_dma, NULL) + /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ extern struct resource ioport_resource; extern struct resource iomem_resource;