Nori, Sekhar wrote:
On Thu, Sep 24, 2009 at 22:23:22, miguel.aguilar@xxxxxxxxxxxx wrote:
From: Miguel Aguilar <miguel.aguilar@xxxxxxxxxxxx>
Adds the driver for enabling key scan support for DaVinci platforms.
DM365 is the only platform that uses this driver at the moment.
Signed-off-by: Miguel Aguilar <miguel.aguilar@xxxxxxxxxxxx>
---
[...]
+
+/* Initializing the kp Module */
+static void davinci_ks_initialize(struct davinci_ks *davinci_ks)
+{
+ u32 strobe = davinci_ks->pdata->strobe;
+ u32 interval = davinci_ks->pdata->interval;
+
+ /* Enable all interrupts */
+ davinci_ks_write(davinci_ks, DAVINCI_KEYSCAN_INT_ALL, DAVINCI_KEYSCAN_INTENA);
+
+ /* Clear interrupts if any */
+ davinci_ks_write(davinci_ks, DAVINCI_KEYSCAN_INT_ALL, DAVINCI_KEYSCAN_INTCLR);
+
+ /* Setup the scan period = strobe + interval */
+ davinci_ks_write(davinci_ks, strobe, DAVINCI_KEYSCAN_STRBWIDTH);
+ davinci_ks_write(davinci_ks, interval, DAVINCI_KEYSCAN_INTERVAL);
+ davinci_ks_write(davinci_ks, 0x01, DAVINCI_KEYSCAN_CONTTIME);
+
+ /* Enable Keyscan module and enable */
+ davinci_ks_write(davinci_ks, DAVINCI_KEYSCAN_AUTODET | DAVINCI_KEYSCAN_KEYEN,
+ DAVINCI_KEYSCAN_KEYCTRL);
We seem to be hardcoded to the 4x4 matrix type here.
Some DM365 boards could use 5x3 matrix.
Thanks,
Sekhar
[MA] I will add a platform option for matrix type to choose 4x4 or 5x3 matrix.
What do think about this?
Thanks,
Miguel Aguilar
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