#include <asm/io.h>
#include <asm/unaligned.h>
+#include <mach/cpu.h>
#include <mach/board.h>
#include "atmel-mci-regs.h"
#define atmci_set_pending(host, event) \
set_bit(event, &host->pending_events)
+/*
+ * Enable or disable features/registers based on
+ * whether the processor supports them
+ */
+static bool mci_has_rwproof(void)
+{
+ if (cpu_is_at91sam9261() || cpu_is_at91rm9200())
+ return false;
+ else
+ return true;
+}
+
/*
* The debugfs stuff below is mostly optimized away when
* CONFIG_DEBUG_FS is not set.
[3] = "BLKE",
[4] = "DTIP",
[5] = "NOTBUSY",
+ [6] = "ENDRX",
+ [7] = "ENDTX",
[8] = "SDIOIRQA",
[9] = "SDIOIRQB",
+ [12] = "SDIOWAIT",
+ [14] = "RXBUFF",
+ [15] = "TXBUFE",
[16] = "RINDE",
[17] = "RDIRE",
[18] = "RCRCE",
[20] = "RTOE",
[21] = "DCRCE",
[22] = "DTOE",
+ [23] = "CSTOE",
+ [24] = "BLKOVRE",
+ [25] = "DMADONE",
+ [26] = "FIFOEMPTY",
+ [27] = "XFRDONE",
[30] = "OVRE",
[31] = "UNRE",
};
clkdiv = 255;
}
+ host->mode_reg = MCI_MR_CLKDIV(clkdiv);
+
/*
* WRPROOF and RDPROOF prevent overruns/underruns by
* stopping the clock when the FIFO is full/empty.
* This state is not expected to last for long.
*/
- host->mode_reg = MCI_MR_CLKDIV(clkdiv) | MCI_MR_WRPROOF
- | MCI_MR_RDPROOF;
+ if (mci_has_rwproof())
+ host->mode_reg |= (MCI_MR_WRPROOF | MCI_MR_RDPROOF);
if (list_empty(&host->queue))
mci_writel(host, MR, host->mode_reg);
nr_slots++;
}
- if (!nr_slots)
+ if (!nr_slots) {
+ dev_err(&pdev->dev, "init failed: no slot defined\n");
goto err_init_slot;
+ }
dev_info(&pdev->dev,
"Atmel MCI controller at 0x%08lx irq %d, %u slots\n",