now that we can finally read the new registers for
new versions of the mmc IP, we can set max_blk_size
correctly depending on the version of the IP we're
running on.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 45 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d32f6ac..ae5583e 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -62,6 +62,18 @@
#define OMAP_HSMMC_AC12 0x013C
#define OMAP_HSMMC_CAPA 0x0140
+/* OMAP HSMMC Host Controller Register (NEW)
+ *
+ * NOTE: DO NOT READ THESE WITH OFFSET
+ */
+#define OMAP_HSMMC_HL_REV 0x0000
+#define OMAP_HSMMC_HL_HWINFO 0x0004
+# define OMAP_HSMMC_HL_HWINFO_MADMA_EN (1 << 0)
+# define OMAP_HSMMC_HL_HWINFO_MERGE_MEM (1 << 1)
+# define OMAP_HSMMC_HL_HWINFO_MEM_SIZE(x) (((x) & (0x0f << 2)) >> 2)
+# define OMAP_HSMMC_HL_HWINFO_RETMODE (1 << 6)
+#define OMAP_HSMMC_HL_SYSCONFIG 0x0010
+
#define VS18 (1 << 26)
#define VS30 (1 << 25)
#define HSS (1 << 21)
@@ -1867,6 +1879,37 @@ static inline struct omap_mmc_platform_data
}
#endif
+static void omap_hsmmc_set_max_blk_size(struct omap_hsmmc_host *host)
+{
+ struct mmc_host *mmc = host->mmc;
+
+ if (of_device_is_compatible(host->dev->of_node, "ti,omap4-hsmmc")) {
+ u32 mem;
+ u32 reg;
+
+ reg = omap_hsmmc_read_no_offset(host, OMAP_HSMMC_HL_HWINFO);
+ mem = OMAP_HSMMC_HL_HWINFO_MEM_SIZE(reg);
+
+ switch (mem) {
+ case 1:
+ mmc->max_blk_size = 512;
+ break;
+ case 2:
+ mmc->max_blk_size = 1024;
+ break;
+ case 4:
+ /* FALLTHROUGH */
+ case 8:
+ /* FALLTHROUGH */
+ default:
+ mmc->max_blk_size = 2048;
+ break;
+ }
+ } else {
+ mmc->max_blk_size = 512; /* Block Length at max can be 1024 */
+ }
+}
+
static int omap_hsmmc_probe(struct platform_device *pdev)
{
struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;
@@ -1986,7 +2029,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
* as we want. */
mmc->max_segs = 1024;
- mmc->max_blk_size = 512; /* Block Length at max can be 1024 */
+ omap_hsmmc_set_max_blk_size(host);
mmc->max_blk_count = 0xFFFF; /* No. of Blocks is 16 bits */
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
mmc->max_seg_size = mmc->max_req_size;
--
1.9.1.286.g5172cb3
--
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