From b4db6ab77256a6761670e45fa4738fc775063d2e Mon Sep 17 00:00:00 2001 From: Ashokkumar G <0xfee1dead.sa@gmail.com> Date: Mon, 27 Jan 2014 09:47:06 -0700 Subject: [PATCH 3/8] arch:arm:mmp: Adding spi master and mtd dataflash for gplugd 1. Adding SPI master for gplugd 2. Adding atmel mtd dataflash on SPI for gplugd --- arch/arm/mach-mmp/gplugd.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c index 83a7019..9c441e1 100644 --- a/arch/arm/mach-mmp/gplugd.c +++ b/arch/arm/mach-mmp/gplugd.c @@ -12,6 +12,8 @@ #include #include #include +#include +#include #include #include @@ -185,6 +187,46 @@ static void __init select_disp_freq(void) } } +static struct pxa2xx_spi_master pxa_ssp_master_info = { + .num_chipselect = 1, + .enable_dma = 1, +}; + +static struct pxa2xx_spi_chip AT45DB041D_spi_info = { + .tx_threshold = 1, + .rx_threshold = 1, + .timeout = 1000, + .gpio_cs = 110 +}; + +static struct spi_board_info __initdata gplugD_spi_board_info[] = { + { + .modalias = "mtd_dataflash", + .mode = SPI_MODE_0, + .max_speed_hz = 260000, + .bus_num = 2, + .chip_select = 0, + .platform_data = NULL, + .controller_data = &AT45DB041D_spi_info, + .irq = -1, + }, +}; + +static inline int pxa168_add_spi(int id, struct pxa2xx_spi_master *pdata) +{ + struct platform_device *pd; + + pd = platform_device_alloc("pxa2xx-spi", id); + if (pd == NULL) { + pr_err("pxa2xx-spi: failed to allocate device (id=%d)\n", id); + return -ENOMEM; + } + + platform_device_add_data(pd, pdata, sizeof(*pdata)); + + return platform_device_add(pd); +} + static void __init gplugd_init(void) { mfp_config(ARRAY_AND_SIZE(gplugd_pin_config)); @@ -196,11 +238,17 @@ static void __init gplugd_init(void) /* on-chip devices */ pxa168_add_uart(3); + pxa168_add_ssp(1); pxa168_add_twsi(0, &i2c_info, ARRAY_AND_SIZE(gplugd_i2c_board_info)); pxa168_add_eth(&gplugd_eth_platform_data); + + pxa168_add_ssp(2); + + pxa168_add_spi(2, &pxa_ssp_master_info); + spi_register_board_info(gplugD_spi_board_info, ARRAY_SIZE(gplugD_spi_board_info)); } MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform") -- 2.8.0