From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from buildserver.ru.mvista.com (unknown [85.21.88.6]) by ozlabs.org (Postfix) with ESMTP id DADE0DDF34 for ; Tue, 21 Aug 2007 23:46:58 +1000 (EST) Received: from localhost (unknown [10.150.0.9]) by buildserver.ru.mvista.com (Postfix) with ESMTP id 62DFF8810 for ; Tue, 21 Aug 2007 18:46:57 +0500 (SAMST) Date: Tue, 21 Aug 2007 17:47:18 +0400 From: Anton Vorontsov To: linuxppc-dev@ozlabs.org Subject: [PATCH v4 2/2] [POWERPC] MPC832x_RDB: update dts to use SPI1 in QE, register mmc_spi stub Message-ID: <20070821134718.GB13308@localhost.localdomain> References: <20070821134537.GA7428@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 In-Reply-To: <20070821134537.GA7428@localhost.localdomain> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , mmc_spi already tested to work. When it will hit mainline the only change that will be needed is replacing "spidev" with "mmc_spi". Signed-off-by: Anton Vorontsov --- arch/powerpc/boot/dts/mpc832x_rdb.dts | 2 +- arch/powerpc/platforms/83xx/mpc832x_rdb.c | 50 +++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/boot/dts/mpc832x_rdb.dts b/arch/powerpc/boot/dts/mpc832x_rdb.dts index e9c332f..1ac0025 100644 --- a/arch/powerpc/boot/dts/mpc832x_rdb.dts +++ b/arch/powerpc/boot/dts/mpc832x_rdb.dts @@ -211,7 +211,7 @@ reg = <4c0 40>; interrupts = <2>; interrupt-parent = <&qeic>; - mode = "cpu"; + mode = "cpu-qe"; }; spi@500 { diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c index e021b08..cf58d06 100644 --- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c +++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c @@ -15,6 +15,7 @@ */ #include +#include #include #include @@ -24,6 +25,7 @@ #include #include "mpc83xx.h" +#include "../../sysdev/fsl_soc.h" #undef DEBUG #ifdef DEBUG @@ -32,6 +34,54 @@ #define DBG(fmt...) #endif +extern int par_io_data_set(u8 port, u8 pin, u8 val); +extern int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain, + int assignment, int has_irq); + +static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity) +{ + pr_debug("%s %d %d\n", __func__, cs, polarity); + par_io_data_set(3, 13, polarity); +} + +static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity) +{ + pr_debug("%s %d %d\n", __func__, cs, polarity); + par_io_data_set(3, 13, !polarity); +} + +static struct spi_board_info mpc832x_spi_boardinfo = { + .bus_num = 0x4c0, + .chip_select = 0, + .max_speed_hz = 50000000, + /* + * XXX: This is spidev (spi in userspace) stub, should + * be replaced by "mmc_spi" when mmc_spi will hit mainline. + */ + .modalias = "spidev", +}; + +static int __init mpc832x_spi_init(void) +{ + if (!machine_is(mpc832x_rdb)) + return 0; + + par_io_config_pin(3, 0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */ + par_io_config_pin(3, 1, 3, 0, 1, 0); /* SPI1 MISO, I/O */ + par_io_config_pin(3, 2, 3, 0, 1, 0); /* SPI1 CLK, I/O */ + par_io_config_pin(3, 3, 2, 0, 1, 0); /* SPI1 SEL, I */ + + par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS, O */ + par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */ + par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */ + + return fsl_spi_init(&mpc832x_spi_boardinfo, 1, + mpc83xx_spi_activate_cs, + mpc83xx_spi_deactivate_cs); +} + +device_initcall(mpc832x_spi_init); + /* ************************************************************************ * * Setup the architecture -- 1.5.0.6