[PATCH v5 1/2] [POWERPC] fsl_soc: add support for fsl_spi

[Kumar Gala]

On Aug 21, 2007, at 10:29 AM, Anton Vorontsov wrote:

> Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
> ---
>  arch/powerpc/sysdev/fsl_soc.c |   84 ++++++++++++++++++++++++++++++ 
> +++++++++++
>  arch/powerpc/sysdev/fsl_soc.h |    7 +++
>  2 files changed, 91 insertions(+), 0 deletions(-)
>
> diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/ 
> fsl_soc.c
> index 1cf29c9..2bdaeb2 100644
> --- a/arch/powerpc/sysdev/fsl_soc.c
> +++ b/arch/powerpc/sysdev/fsl_soc.c
> @@ -24,6 +24,7 @@
>  #include <linux/platform_device.h>
>  #include <linux/of_platform.h>
>  #include <linux/phy.h>
> +#include <linux/spi/spi.h>
>  #include <linux/fsl_devices.h>
>  #include <linux/fs_enet_pd.h>
>  #include <linux/fs_uart_pd.h>
> @@ -1187,3 +1188,86 @@ err:
>  arch_initcall(cpm_smc_uart_of_init);
>
>  #endif /* CONFIG_8xx */
> +
> +int __init fsl_spi_init(struct spi_board_info *board_infos,
> +			unsigned int num_board_infos,
> +			void (*activate_cs)(u8 cs, u8 polarity),
> +			void (*deactivate_cs)(u8 cs, u8 polarity))
> +{
> +	struct device_node *np;
> +	unsigned int i;
> +	u32 sysclk;
> +
> +	np = of_find_node_by_type(NULL, "qe");
> +	if (!np)
> +		return -ENODEV;
> +
> +	sysclk = *(u32 *)of_get_property(np, "bus-frequency", NULL);
> +
> +	for (np = NULL, i = 1;
> +	     (np = of_find_compatible_node(np, "spi", "fsl_spi")) != NULL;
> +	     i++) {
> +		int ret = 0;
> +		unsigned int j;
> +		const char *mode;
> +		struct resource res[2];
> +		struct platform_device *pdev = NULL;
> +		struct fsl_spi_platform_data pdata = {
> +			.activate_cs = activate_cs,
> +			.deactivate_cs = deactivate_cs,
> +		};
> +
> +		memset(res, 0, sizeof(res));
> +
> +		mode = of_get_property(np, "mode", NULL);
> +		pdata.sysclk = sysclk;
> +		pdata.bus_num = *(u32 *)of_get_property(np, "reg", NULL);
> +
> +		for (j = 0; j < num_board_infos; j++) {
> +			if (board_infos[j].bus_num == pdata.bus_num)
> +				pdata.max_chipselect++;
> +		}
> +
> +		if (!pdata.max_chipselect)
> +			goto err;
> +
> +		if (!strcmp(mode, "cpu-qe"))
> +			pdata.qe_mode = 1;
> +
> +		ret = of_address_to_resource(np, 0, &res[0]);
> +		if (ret)
> +			goto err;
> +
> +		res[1].start = res[2].end = irq_of_parse_and_map(np, 0);
> +		if (res[1].start == NO_IRQ)
> +			goto err;
> +
> +		res[1].name = "mpc83xx_spi";
> +		res[1].flags = IORESOURCE_IRQ;;

double ;;

can we not use of_irq_to_resource() ?

> +
> +		pdev = platform_device_alloc("mpc83xx_spi", i);
> +		if (!pdev)
> +			goto err;
> +
> +		ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
> +		if (ret)
> +			goto unreg;
> +
> +		ret = platform_device_add_resources(pdev, res,
> +						    ARRAY_SIZE(res));
> +		if (ret)
> +			goto unreg;
> +
> +		ret = platform_device_register(pdev);
> +		if (ret)
> +			goto unreg;
> +
> +		continue;
> +unreg:
> +		platform_device_del(pdev);
> +err:
> +		continue;
> +	}
> +
> +	return spi_register_board_info(board_infos, num_board_infos);
> +}
> diff --git a/arch/powerpc/sysdev/fsl_soc.h b/arch/powerpc/sysdev/ 
> fsl_soc.h
> index 04e145b..618d91d 100644
> --- a/arch/powerpc/sysdev/fsl_soc.h
> +++ b/arch/powerpc/sysdev/fsl_soc.h
> @@ -8,5 +8,12 @@ extern phys_addr_t get_immrbase(void);
>  extern u32 get_brgfreq(void);
>  extern u32 get_baudrate(void);
>
> +struct spi_board_info;
> +
> +extern int fsl_spi_init(struct spi_board_info *board_infos,
> +			unsigned int num_board_infos,
> +			void (*activate_cs)(u8 cs, u8 polarity),
> +			void (*deactivate_cs)(u8 cs, u8 polarity));
> +
>  #endif
>  #endif
> -- 
> 1.5.0.6
>
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