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Diffstat (limited to 'arch/avr32/mach-at32ap/at32ap700x.c')
-rw-r--r--arch/avr32/mach-at32ap/at32ap700x.c88
1 files changed, 70 insertions, 18 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index fd306c49194b..5d00bb8d3cc2 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -1272,10 +1272,14 @@ static struct clk atmel_mci0_pclk = {
struct platform_device *__init
at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
{
- struct mci_platform_data _data;
struct platform_device *pdev;
+ struct dw_dma_slave *dws;
- if (id != 0)
+ if (id != 0 || !data)
+ return NULL;
+
+ /* Must have at least one usable slot */
+ if (!data->slot[0].bus_width && !data->slot[1].bus_width)
return NULL;
pdev = platform_device_alloc("atmel_mci", id);
@@ -1286,28 +1290,76 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
ARRAY_SIZE(atmel_mci0_resource)))
goto fail;
- if (!data) {
- data = &_data;
- memset(data, -1, sizeof(struct mci_platform_data));
- data->detect_pin = GPIO_PIN_NONE;
- data->wp_pin = GPIO_PIN_NONE;
- }
+ if (data->dma_slave)
+ dws = kmemdup(to_dw_dma_slave(data->dma_slave),
+ sizeof(struct dw_dma_slave), GFP_KERNEL);
+ else
+ dws = kzalloc(sizeof(struct dw_dma_slave), GFP_KERNEL);
+
+ dws->slave.dev = &pdev->dev;
+ dws->slave.dma_dev = &dw_dmac0_device.dev;
+ dws->slave.reg_width = DMA_SLAVE_WIDTH_32BIT;
+ dws->cfg_hi = (DWC_CFGH_SRC_PER(0)
+ | DWC_CFGH_DST_PER(1));
+ dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL
+ | DWC_CFGL_HS_SRC_POL);
+
+ data->dma_slave = &dws->slave;
if (platform_device_add_data(pdev, data,
sizeof(struct mci_platform_data)))
goto fail;
- select_peripheral(PA(10), PERIPH_A, 0); /* CLK */
- select_peripheral(PA(11), PERIPH_A, 0); /* CMD */
- select_peripheral(PA(12), PERIPH_A, 0); /* DATA0 */
- select_peripheral(PA(13), PERIPH_A, 0); /* DATA1 */
- select_peripheral(PA(14), PERIPH_A, 0); /* DATA2 */
- select_peripheral(PA(15), PERIPH_A, 0); /* DATA3 */
+ /* CLK line is common to both slots */
+ select_peripheral(PA(10), PERIPH_A, 0);
- if (gpio_is_valid(data->detect_pin))
- at32_select_gpio(data->detect_pin, 0);
- if (gpio_is_valid(data->wp_pin))
- at32_select_gpio(data->wp_pin, 0);
+ switch (data->slot[0].bus_width) {
+ case 4:
+ select_peripheral(PA(13), PERIPH_A, 0); /* DATA1 */
+ select_peripheral(PA(14), PERIPH_A, 0); /* DATA2 */
+ select_peripheral(PA(15), PERIPH_A, 0); /* DATA3 */
+ /* fall through */
+ case 1:
+ select_peripheral(PA(11), PERIPH_A, 0); /* CMD */
+ select_peripheral(PA(12), PERIPH_A, 0); /* DATA0 */
+
+ if (gpio_is_valid(data->slot[0].detect_pin))
+ at32_select_gpio(data->slot[0].detect_pin, 0);
+ if (gpio_is_valid(data->slot[0].wp_pin))
+ at32_select_gpio(data->slot[0].wp_pin, 0);
+ break;
+ case 0:
+ /* Slot is unused */
+ break;
+ default:
+ goto fail;
+ }
+
+ switch (data->slot[1].bus_width) {
+ case 4:
+ select_peripheral(PB(8), PERIPH_B, 0); /* DATA1 */
+ select_peripheral(PB(9), PERIPH_B, 0); /* DATA2 */
+ select_peripheral(PB(10), PERIPH_B, 0); /* DATA3 */
+ /* fall through */
+ case 1:
+ select_peripheral(PB(6), PERIPH_B, 0); /* CMD */
+ select_peripheral(PB(7), PERIPH_B, 0); /* DATA0 */
+
+ if (gpio_is_valid(data->slot[1].detect_pin))
+ at32_select_gpio(data->slot[1].detect_pin, 0);
+ if (gpio_is_valid(data->slot[1].wp_pin))
+ at32_select_gpio(data->slot[1].wp_pin, 0);
+ break;
+ case 0:
+ /* Slot is unused */
+ break;
+ default:
+ if (!data->slot[0].bus_width)
+ goto fail;
+
+ data->slot[1].bus_width = 0;
+ break;
+ }
atmel_mci0_pclk.dev = &pdev->dev;