On 14.10.2010 21:01, Greg KH wrote:
On Thu, Oct 07, 2010 at 10:15:07AM +0200, Manuel Stahl wrote:--- /dev/null +++ b/include/linux/spi/sc16is7x2.h @@ -0,0 +1,17 @@ +#ifndef LINUX_SPI_SC16IS752_H +#define LINUX_SPI_SC16IS752_H + +#define SC16IS7X2_NR_GPIOS 8 + +struct sc16is7x2_platform_data { + unsigned int uartclk; + /* uart line number of the first channel */ + unsigned uart_base; + /* number assigned to the first GPIO */ + unsigned gpio_base; + char *label; + /* list of GPIO names (array length = SC16IS7X2_NR_GPIOS) */ + const char *const *names; +}; + +#endifWhy is this needed in a .h file? What other .c file uses this define and structure? thanks, greg k-h
The board setup code can pass information about the uart and gpio enumeration. It can also define names for the GPIOs. Futhermore the base clock of the chip must be known, as it can be clocked by an external device.
Regards, -- Manuel Stahl Fraunhofer-Institut IIS Leistungsoptimierte Systeme Nordostpark 93 D90411 Nürnberg Telefon +49 (0)911/58061-6419 Fax +49 (0)911/58061-6398 E-Mail manuel.stahl@xxxxxxxxxxxxxxxxx http://www.iis.fraunhofer.de http://www.smart-power.fraunhofer.de
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