From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: PATCH[V2 1/3]: Update Platform files for SPI Date: Tue, 9 Feb 2010 14:25:13 -0800 Message-ID: <20100209222513.GJ21755@atomide.com> References: <9629.10.24.255.17.1265192505.squirrel@dbdmail.itg.ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: spi-devel-general@lists.sourceforge.net, linux-omap@vger.kernel.org, dbrownell@users.sourceforge.net, grant.likely@secretlab.ca To: Hemanth V Return-path: Content-Disposition: inline In-Reply-To: <9629.10.24.255.17.1265192505.squirrel@dbdmail.itg.ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org * Hemanth V [100203 02:19]: > From ee48142ddc43129a21676dbb56a83e3e7d8063de Mon Sep 17 00:00:00 2001 > From: Hemanth V > Date: Fri, 27 Nov 2009 14:22:30 +0530 > Subject: [PATCH] Update platform files > > This patch updates platform files for > fifo, slave support > > Signed-off-by: Hemanth V This should get merged via the spi-devel list with the other patches. Acked-by: Tony Lindgren > --- > arch/arm/mach-omap2/devices.c | 5 +++++ > arch/arm/plat-omap/include/plat/mcspi.h | 29 ++++++++++++++++++++++++++++- 2 > files changed, 33 insertions(+), 1 deletions(-) > > diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c > index 733d3dc..79b5396 100644 > --- a/arch/arm/mach-omap2/devices.c > +++ b/arch/arm/mach-omap2/devices.c > @@ -282,6 +282,7 @@ static inline void omap_init_sti(void) {} > > static struct omap2_mcspi_platform_config omap2_mcspi1_config = { > .num_cs = 4, > + .force_cs_mode = 1, > }; > > static struct resource omap2_mcspi1_resources[] = { > @@ -304,6 +305,10 @@ static struct platform_device omap2_mcspi1 = { > > static struct omap2_mcspi_platform_config omap2_mcspi2_config = { > .num_cs = 2, > + .mode = OMAP2_MCSPI_MASTER, > + .dma_mode = 0, > + .force_cs_mode = 0, > + .fifo_depth = 0, > }; > > static struct resource omap2_mcspi2_resources[] = { > diff --git a/arch/arm/plat-omap/include/plat/mcspi.h > b/arch/arm/plat-omap/include/plat/mcspi.h > index 1254e49..ffda0a1 100644 > --- a/arch/arm/plat-omap/include/plat/mcspi.h > +++ b/arch/arm/plat-omap/include/plat/mcspi.h > @@ -1,8 +1,35 @@ > #ifndef _OMAP2_MCSPI_H > #define _OMAP2_MCSPI_H > > +#define OMAP2_MCSPI_MASTER 0 > +#define OMAP2_MCSPI_SLAVE 1 > + > +/** > + * struct omap2_mcspi_platform_config - McSPI controller configuration + * > @num_cs: Number of chip selects or channels supported > + * @mode: SPI is master or slave > + * @dma_mode: Use only DMA for data transfers > + * @force_cs_mode: Use force chip select mode or auto chip select mode + * > @fifo_depth: FIFO depth in bytes, max value 64 > + * > + * @dma_mode when set to 1 uses only dma for data transfers > + * else the default behaviour is to use PIO mode for transfer > + * size of 8 bytes or less. This mode is useful when mcspi > + * is configured as slave > + * > + * @force_cs_mode when set to 1 allows continuous transfer of multiple + * spi > words without toggling the chip select line. > + * > + * @fifo_depth when set to non zero values enables FIFO. fifo_depth + * should > be set as a multiple of buffer size used for read/write. + */ > + > struct omap2_mcspi_platform_config { > - unsigned short num_cs; > + u8 num_cs; > + u8 mode; > + u8 dma_mode; > + u8 force_cs_mode; > + unsigned short fifo_depth; > }; > > struct omap2_mcspi_device_config { > -- > 1.5.6.3 > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html