Using SPI1 with a LCD on DM355

Hi,

  I try to use SPI1 bus to configure a TFT display, but I don't really understand how to do that. I try to create a new driver like "AT25xxA_eeprom", but it doesn't work.

  I create "TFT2N.c" in "/lsp/ti-davinci/driver/video" and I have modified "Kconfig" and "Makefile" and in "make menu config" I have added my driver to the kernel. After rebooting the dm355evm board, I look at Kernel Debug Message with "dmesg" and I see that my driver is running. My question is, how make-work spi1 in my lcd driver ?

  I have try to create, in "/lsp/ti-davinci/arch/arm/mach-davinci/davinci_spi_platform.c", a new spi platform :

static struct resource lcd_spi_resources[] = {
    [0] = {
           .start = DAVINCI_DM355_SPI1_BASE,
           .end = DAVINCI_DM355_SPI1_BASE + (SZ_4K) - 1,
           .flags = IORESOURCE_MEM,
           },
    [1] = {
           .start = IRQ_DM355_SPINT1_0,
           .end = IRQ_DM355_SPINT1_0,
           .flags = IORESOURCE_IRQ,
           },
};

struct platform_device lcd_platform_spi_device = {
    .name = "TFT2N spi Platform",
    .id = 0,
    .num_resources = ARRAY_SIZE(lcd_spi_resources),
    .resource = lcd_spi_resources,
};

...

/** add one chip to the board **/

static struct spi_board_info dm355_spi_board_info[] = {
                 ...
    {
     .modalias = "lcd",
     .platform_data = NULL,
     .mode = SPI_MODE_3,
     .irq = 0,
     .max_speed_hz = 2 * 1000 * 1000 /* max sample rate at 3V */ ,
     .bus_num = 1,
     .chip_select = 0,
     },
};

...

/** Registering the new platform **/

lcd_platform_spi_device.dev.platform_data = &lcd_spi_platform_data;

(void)platform_device_register(&lcd_platform_spi_device);


After this, I use "lcd_platform_spi_device" in my driver code but I don't succeed to have to "struct spi_device" needed to write and read something on SPI.

I saw also, in "AT25xxA_eeprom.c", that the system send directly an spi_device parameter to the "_devinit" function.  But I don't understand how. In my driver, the system never calls this function.

Please, can you help me to make-work SPI interface ?

Thanks a lot  and sorry for my bad english.

ROCHE Guillaume