[PATCH v2]: NUC900: Add spi driver support for nuc900

[Wan ZongShun]

Dear Li Jie,


2009/11/21 Li Jie <eltshanli at gmail.com>:
> On Fri, Nov 20, 2009 at 1:26 PM, Wan ZongShun <mcuos.com at gmail.com> wrote:
>>
>> +static void w90p910_init_spi(struct w90p910_spi *hw)
>> +{
>> +       clk_enable(hw->clk);
>> +       spin_lock_init(&hw->lock);
>> +
>> +       w90p910_tx_edge(hw, hw->pdata->txneg);
>> +       w90p910_rx_edge(hw, hw->pdata->rxneg);
>> +       w90p910_send_first(hw, hw->pdata->lsb);
>> +       w90p910_set_sleep(hw, hw->pdata->sleep);
>> +       w90p910_spi_setup_txbitlen(hw, hw->pdata->txbitlen);
>> +       w90p910_spi_setup_txnum(hw, hw->pdata->txnum);
>> +       w90p910_set_divider(hw);
>> +       w90p910_enable_int(hw, 1);
>> +}
>> +
>> +static int __devinit w90p910_spi_probe(struct platform_device *pdev)
>> +{
>> +       struct w90p910_spi *hw;
>> +       struct spi_master *master;
>> +       struct resource *res;
>> +       int err = 0;
>> +
>> +       master = spi_alloc_master(&pdev->dev, sizeof(struct w90p910_spi));
>> +       if (master == NULL) {
>> +               dev_err(&pdev->dev, "No memory for spi_master\n");
>> +               err = -ENOMEM;
>> +               goto err_nomem;
>> +       }
>> +
>> +       hw = spi_master_get_devdata(master);
>> +       memset(hw, 0, sizeof(struct w90p910_spi));
>> +
>> +       hw->master = spi_master_get(master);
>> +       hw->pdata  = pdev->dev.platform_data;
>
> Seems that platform_data is necessary in your driver,
> but I found it is not initialized in mach-w90x900/dev.c:
>
> static struct platform_device nuc900_device_spi = {
>        .name           = "nuc900-spi",
>        .id             = -1,
>        .num_resources  = ARRAY_SIZE(nuc900_spi_resource),
>        .resource       = nuc900_spi_resource,
> };
>

Yes , you are right, I tested the spi driver via 'm25p80', so I must
add some its definition  to my dev.c and use 'spi_register_board_info'
to register this type flash info.

So, I just want to add the platform_data definition patch along with
above and I think I will submit it later.

Anyway, thanks a lot for your careful reviewing my patch.

> --
> Regards
> Li Jie
>



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