There are timers with a 64-bit counter value but current timer
uclass driver assumes a 32-bit one. Modify timer_get_count()
to ask timer driver to always return a 64-bit counter value,
and provide an inline helper function timer_conv_64() to handle
the 32-bit/64-bit conversion automatically.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>

Since we have timer uclass to get clock frequency for us, remove
the custom version in the altera timer driver.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Simon Glass <sjg@chromium.org>

Change ioremap() to map_physmem(), as it is more used in u-boot.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Marek Vasut <marex@denx.de>

- Moved macro definitions to top
- Remove the penultimate comma in of_match ids

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Jagan Teki <jteki@openedev.com>

Replace numerical bit shift with BIT macro
in altera_timer

:%s/(1 << nr)/BIT(nr)/g
where nr = 0, 1, 2 .... 31

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Jagan Teki <jteki@openedev.com>

Convert altera timer to driver model.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Chin Liang See <clsee@altera.com>