Thanks Hemanth, I'll give it a try with 2.6.29 kernel. Do the patches support McSPI RX interrupt? Or McSPI FIFO full interrupt? Upon receipt of such interrupts, slave client could issue a spi_read.
Thanks gilles Texas Instruments France SA, 821 Avenue Jack Kilby, 06270 Villeneuve Loubet. 036 420 040 R.C.S Antibes. Capital de EUR 753.920 -----Original Message----- From: V, Hemanth Sent: Tuesday, February 09, 2010 1:59 PM To: Talis, Gilles; linux-omap@vger.kernel.org Cc: spi-devel-gene...@lists.sourceforge.net Subject: Re: OMAP3 Slave McSPI driver ----- Original Message ----- From: "Talis, Gilles" <g-ta...@ti.com> To: <linux-omap@vger.kernel.org> Sent: Tuesday, February 09, 2010 3:06 PM Subject: OMAP3 Slave McSPI driver > Hi, > > My customer is using Android 2.6.29 kernel from OMAPZOOM and is looking > for support for slave mode on the SPI driver. > I saw there were patches for this feature sent to this list, but I was > wondering if those patches were tested on 2.6.29. > These patches have not been specifically tested on 29 kernel, but you could give it a shot. Pl also look at the latest patches (V2) posted. > I am also looking for some kind of API usage guidelines. How to setup the > slave mode and how is OMAP notified that data have been received from > external master device? My customer plans to use this driver in interrupt > mode (no DMA needed). > To set any mcspi controller to slave mode, you need to modify arch/arm/mach-omap2/devices.c file and set mode to OMAP2_MCSPI_SLAVE. Typically gpio is used by master to notify the slave that it is ready to transfer data. On gpio interrupt slave client could issue spi_read/spi_write commands. Two modes are supported i.e PIO and DMA. Any specific reason not to use DMA mode. Thanks Hemanth > Thanks > Gilels. > > > > Texas Instruments France SA, 821 Avenue Jack Kilby, 06270 Villeneuve > Loubet. 036 420 040 R.C.S Antibes. Capital de EUR 753.920 > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
