+#ifdef CONFIG_ARCH_OMAP3
+
+static int enable_off_mode; /* to be removed by full off-mode patches */
+
+static void omap_uart_save_context(struct omap_uart_state *uart)
+{
+ u16 lcr = 0;
+ struct plat_serial8250_port *p = uart->p;
+
+ if (!enable_off_mode)
+ return;
+
+ lcr = serial_read_reg(p, UART_LCR);
+ serial_write_reg(p, UART_LCR, 0xBF);
+ uart->dll = serial_read_reg(p, UART_DLL);
+ uart->dlh = serial_read_reg(p, UART_DLM);
+ serial_write_reg(p, UART_LCR, lcr);
+ uart->ier = serial_read_reg(p, UART_IER);
+ uart->sysc = serial_read_reg(p, UART_OMAP_SYSC);
+ uart->scr = serial_read_reg(p, UART_OMAP_SCR);
+ uart->wer = serial_read_reg(p, UART_OMAP_WER);
+
+ uart->context_valid = 1;
+}
+
+static void omap_uart_restore_context(struct omap_uart_state *uart)
+{
+ u16 efr = 0;
+ struct plat_serial8250_port *p = uart->p;
+
+ if (!enable_off_mode)
+ return;
+
+ if (!uart->context_valid)
+ return;
+
+ uart->context_valid = 0;
+
+ serial_write_reg(p, UART_OMAP_MDR1, 0x7);
+ serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */
+ efr = serial_read_reg(p, UART_EFR);
+ serial_write_reg(p, UART_EFR, UART_EFR_ECB);
+ serial_write_reg(p, UART_LCR, 0x0); /* Operational mode */
+ serial_write_reg(p, UART_IER, 0x0);
+ serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */
+ serial_write_reg(p, UART_DLL, uart->dll);
+ serial_write_reg(p, UART_DLM, uart->dlh);
+ serial_write_reg(p, UART_LCR, 0x0); /* Operational mode */
+ serial_write_reg(p, UART_IER, uart->ier);
+ serial_write_reg(p, UART_FCR, 0xA1);
+ serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */
+ serial_write_reg(p, UART_EFR, efr);
+ serial_write_reg(p, UART_LCR, UART_LCR_WLEN8);
+ serial_write_reg(p, UART_OMAP_SCR, uart->scr);
+ serial_write_reg(p, UART_OMAP_WER, uart->wer);
+ serial_write_reg(p, UART_OMAP_SYSC, uart->sysc);
+ serial_write_reg(p, UART_OMAP_MDR1, 0x00); /* UART 16x mode */
+}
+#else
+static inline void omap_uart_save_context(struct omap_uart_state *uart) {}
+static inline void omap_uart_restore_context(struct omap_uart_state *uart) {}
+#endif /* CONFIG_ARCH_OMAP3 */
+