Messages in this thread | | | From | "Tomoya MORINAGA" <> | Subject | RE: [PATCH 1/3] spi_topcliff_pch: support new device ML7213 | Date | Wed, 12 Jan 2011 14:27:12 +0900 |
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On Tuesday, January 11, 2011 6:42 PM, Tomoya MORINAGA wrote: > However, I couldn't clear my question.
I show the current our coding image. Is the following agreeable with your saying ?
struct spi_platform_data { u16 num_chipselect; bool little_endian; u8 bits_per_word; struct spi_board_info *devices; u8 num_devices; };
static struct resource pch_spi_resources[] = { { .start = 0, .end = 0, .flags = IORESOURCE_MEM, }, { .start = 0, .end = 0, .flags = IORESOURCE_IRQ, }, };
static struct spi_platform_data pch_spi_platform_data = { .num_chipselect = 2, .little_endian = true, };
static struct pch_spi_cell pch_spi_cfg0 = { .name = "pch_spi", .num_resources = ARRAY_SIZE(pch_spi_resources), .resources = pch_spi_resources, .platform_data = &pch_spi_platform_data, .data_size = sizeof(pch_spi_platform_data), };
static int pch_spi_get_resources(struct pch_spi_board_data *board_dat, int num) { int retval; int i;
/* create workqueue */ board_dat->data[num]->wk = create_singlethread_workqueue(KBUILD_MODNAME);
pci_request_regions(board_dat->pdev, KBUILD_MODNAME); }
static int pch_spi_add_device(struct device *parent, int id, struct pch_spi_cell *cell, struct resource *mem_base, int irq_base, struct pch_spi_board_data *board_dat) {
platform_device_alloc(cell->name, id + cell->id);
res = kzalloc(sizeof(*res) * cell->num_resources, GFP_KERNEL); if (!res) goto fail_device;
platform_set_drvdata(pdev, cell->driver_data);
if (cell->data_size) { platform_device_add_data(pdev, cell->platform_data, cell->data_size); }
for (i = 0; i < cell->num_resources; i++) { if ((cell->resources[i].flags & IORESOURCE_MEM) && mem_base) { res[i].parent = res[i].start = res[i].end = } else if (cell->resources[i].flags & IORESOURCE_IRQ) { res[i].start = res[i].end = } else {
}
ret = platform_device_add_resources(pdev, res, cell->num_resources); if (ret) goto fail_res;
ret = platform_device_add(pdev); if (ret) goto fail_res;
kfree(res);
spi_alloc_master( );
board_dat->data[num] = spi_master_get_devdata( );
pch_spi_get_resources( );
/* set master mode */ pch_spi_set_master_mode( );
/* Register the controller with the SPI core. */ spi_register_master( );
return 0; }
int pch_spi_add_devices(struct device *parent, struct pch_spi_cell *cells, int n_devs, struct resource *mem_base, struct pch_spi_board_data *board_dat) { pci_iomap()
for (i < n_devs) pch_spi_add_device()
}
static int pch_spi_probe(struct pci_dev *pdev, const struct pci_device_id *id) { board_dat = kzalloc(sizeof(struct pch_spi_board_data), GFP_KERNEL); pci_enable_device() request_irq() pch_spi_add_devices(&pdev->dev, &pch_spi_cfg0, 2, &pdev->resource[0], board_dat);
}
static irqreturn_t pch_spi_handler(int irq, void *dev_id) {
for (i = 0; i < board_dat->num; i++) { data = board_dat->data[i]; io_remap_addr = data->io_remap_addr; spsr = io_remap_addr + PCH_SPSR;
reg_spsr_val = ioread32(spsr);
/* Check if the interrupt is for SPI device */ if (reg_spsr_val & (SPSR_FI_BIT | SPSR_RFI_BIT)) { pch_spi_handler_sub(data, reg_spsr_val, io_remap_addr); ret = IRQ_HANDLED; }
dev_dbg(&board_dat->pdev->dev, "%s EXIT return value=%d\n", __func__, ret); } return ret; }
Thanks, ----------------------------------------- Tomoya MORINAGA OKI SEMICONDUCTOR CO., LTD.
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