Avoid using hwmod lookup using name string rather
retreive port info using the hwmod class interface.
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Govindraj.R <govindraj.raja@xxxxxx>
---
arch/arm/mach-omap2/serial.c | 71 ++++++++++++++++++-----------------------
1 files changed, 31 insertions(+), 40 deletions(-)
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 128e19b..0380ac8 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -56,8 +56,6 @@
*/
#define DEFAULT_TIMEOUT 0
-#define MAX_UART_HWMOD_NAME_LEN 16
-
struct omap_uart_state {
int num;
int can_sleep;
@@ -601,52 +599,45 @@ static void serial_out_override(struct uart_port *up, int offset, int value)
}
#endif
-void __init omap_serial_early_init(void)
+static int omap_serial_port_init(struct omap_hwmod *oh, void *user)
{
- int i = 0;
+ struct omap_uart_state *uart;
+ static int i;
- do {
- char oh_name[MAX_UART_HWMOD_NAME_LEN];
- struct omap_hwmod *oh;
- struct omap_uart_state *uart;
+ uart = kzalloc(sizeof(struct omap_uart_state), GFP_KERNEL);
+ if (WARN_ON(!uart))
+ return -ENOMEM;
- snprintf(oh_name, MAX_UART_HWMOD_NAME_LEN,
- "uart%d", i + 1);
- oh = omap_hwmod_lookup(oh_name);
- if (!oh)
- break;
+ uart->oh = oh;
+ uart->num = i++;
+ list_add_tail(&uart->node, &uart_list);
+ num_uarts++;
- uart = kzalloc(sizeof(struct omap_uart_state), GFP_KERNEL);
- if (WARN_ON(!uart))
- return;
+ /*
+ * During UART early init, device need to be probed
+ * to determine SoC specific init before omap_device
+ * is ready. Therefore, don't allow idle here
+ */
- uart->oh = oh;
- uart->num = i++;
- list_add_tail(&uart->node, &uart_list);
- num_uarts++;
+ uart->oh->flags |= HWMOD_INIT_NO_IDLE;
- /*
- * NOTE: omap_hwmod_init() has not yet been called,
- * so no hwmod functions will work yet.
- */
+ /*
+ * Since UART hwmod is idle/enabled inside the
+ * idle loop, interrupts are already disabled and
+ * thus no locking is needed. Since the mutex-based
+ * locking in hwmod might sleep, allowing locking
+ * may introduce problems.
+ */
- /*
- * During UART early init, device need to be probed
- * to determine SoC specific init before omap_device
- * is ready. Therefore, don't allow idle here
- */
- uart->oh->flags |= HWMOD_INIT_NO_IDLE;
-
- /*
- * Since UART hwmod is idle/enabled inside the
- * idle loop, interrupts are already disabled and
- * thus no locking is needed. Since the mutex-based
- * locking in hwmod might sleep, allowing locking
- * may introduce problems.
- */
- uart->oh->flags |= HWMOD_NO_IDLE_LOCKING;
+ uart->oh->flags |= HWMOD_NO_IDLE_LOCKING;
- } while (1);
+ return 0;
+}
+
+void __init omap_serial_early_init(void)
+{
+ omap_hwmod_for_each_by_class("uart",
+ omap_serial_port_init, NULL);
}
/**
--
1.6.3.3
--
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