diff options
| author | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-22 09:32:31 +0200 |
|---|---|---|
| committer | Robert Marklund <robert.marklund@stericsson.com> | 2011-10-05 12:59:04 +0200 |
| commit | d5184cbc6f45bab9096d5baca6b091c11aa27659 (patch) | |
| tree | 6056384c35d293c90bfbca4c71472cfc002b0337 /include/linux | |
| parent | 77fd395c22e669948deddacd09c120a5b63bb74d (diff) | |
mmc: mmci: Provide option to configure bus signal direction
The ST Micro variant supports bus signal direction indication. A new
member in the variant struct is added for this.
Moreover the actual signal direction configuration is board specific,
thus the amba mmci platform data is extended with a new member to be
able provide mmci with these specific board configurations.
This patch is based upon a patch from Sebastian Rasmussen.
Change-Id: I430ff6469ec1546b0ee438c1629c6a07fdade5f7
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/31882
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/amba/mmci.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h index 21114810c7c..3d127b50c67 100644 --- a/include/linux/amba/mmci.h +++ b/include/linux/amba/mmci.h @@ -6,6 +6,20 @@ #include <linux/mmc/host.h> +/* + * These defines is places here due to access is needed from machine + * configuration files. + * + * The ST Micro version does not have ROD and reuse the voltage registers + * for direction settings. + */ +#define MCI_ST_DATA2DIREN (1 << 2) +#define MCI_ST_CMDDIREN (1 << 3) +#define MCI_ST_DATA0DIREN (1 << 4) +#define MCI_ST_DATA31DIREN (1 << 5) +#define MCI_ST_FBCLKEN (1 << 7) +#define MCI_ST_DATA74DIREN (1 << 8) + /* Just some dummy forwarding */ struct dma_chan; @@ -30,6 +44,8 @@ struct dma_chan; * @cd_invert: true if the gpio_cd pin value is active low * @capabilities: the capabilities of the block as implemented in * this platform, signify anything MMC_CAP_* from mmc/host.h + * @sigdir: a bit field indicating for what bits in the MMC bus the host + * should enable signal direction indication. * @dma_filter: function used to select an appropriate RX and TX * DMA channel to be used for DMA, if and only if you're deploying the * generic DMA engine @@ -52,6 +68,7 @@ struct mmci_platform_data { int gpio_cd; bool cd_invert; unsigned long capabilities; + unsigned int sigdir; bool (*dma_filter)(struct dma_chan *chan, void *filter_param); void *dma_rx_param; void *dma_tx_param; |