omap1: Fix redundant UARTs pin muxing that can break other hardware support

Commit 15ac408ee5a509053a765b816e9179515329369f removed enabled_uart
and OMAP_TAG_UART. This works for mach-omap2, but causes issues on
mach-omap1 for some boards as the mach-omap1 serial.c was muxing
pins based on the enabled_uart flag for 15xx.

Fix this by muxing pins in board-*.c files for the 15xx boards for
the uart ports that had enabled_uart flag set before the commit
above.

Tested on Amsdtrad Delta only.

Note that in the future we should add support for powering down
the uarts with a timer like mach-omap2/serial.c does. Otherwise
the enabled uarts will be blocking retention-while-idle.

Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>

9 files changed, 72 insertions, 26 deletions

diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
index 42920f9c1a11..972499e95244 100644
--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -219,6 +219,10 @@ static struct platform_device *ams_delta_devices[] __initdata = {
 
 static void __init ams_delta_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+
         iotable_init(ams_delta_io_desc, ARRAY_SIZE(ams_delta_io_desc));
 
         omap_board_config = ams_delta_config;
diff --git a/arch/arm/mach-omap1/board-generic.c b/arch/arm/mach-omap1/board-generic.c
index fb47239da72f..6c8a41f20e51 100644
--- a/arch/arm/mach-omap1/board-generic.c
+++ b/arch/arm/mach-omap1/board-generic.c
@@ -64,6 +64,14 @@ static void __init omap_generic_init(void)
 {
 #ifdef CONFIG_ARCH_OMAP15XX
         if (cpu_is_omap15xx()) {
+                /* mux pins for uarts */
+                omap_cfg_reg(UART1_TX);
+                omap_cfg_reg(UART1_RTS);
+                omap_cfg_reg(UART2_TX);
+                omap_cfg_reg(UART2_RTS);
+                omap_cfg_reg(UART3_TX);
+                omap_cfg_reg(UART3_RX);
+
                 omap_usb_init(&generic1510_usb_config);
         }
 #endif
diff --git a/arch/arm/mach-omap1/board-innovator.c b/arch/arm/mach-omap1/board-innovator.c
index cc2abbb2d0f4..cd6c39514826 100644
--- a/arch/arm/mach-omap1/board-innovator.c
+++ b/arch/arm/mach-omap1/board-innovator.c
@@ -376,6 +376,26 @@ static void __init innovator_init(void)
 {
 #ifdef CONFIG_ARCH_OMAP15XX
         if (cpu_is_omap1510()) {
+                unsigned char reg;
+
+                /* mux pins for uarts */
+                omap_cfg_reg(UART1_TX);
+                omap_cfg_reg(UART1_RTS);
+                omap_cfg_reg(UART2_TX);
+                omap_cfg_reg(UART2_RTS);
+                omap_cfg_reg(UART3_TX);
+                omap_cfg_reg(UART3_RX);
+
+                reg = fpga_read(OMAP1510_FPGA_POWER);
+                reg |= OMAP1510_FPGA_PCR_COM1_EN;
+                fpga_write(reg, OMAP1510_FPGA_POWER);
+                udelay(10);
+
+                reg = fpga_read(OMAP1510_FPGA_POWER);
+                reg |= OMAP1510_FPGA_PCR_COM2_EN;
+                fpga_write(reg, OMAP1510_FPGA_POWER);
+                udelay(10);
+
                 platform_add_devices(innovator1510_devices, ARRAY_SIZE(innovator1510_devices));
                 spi_register_board_info(innovator1510_boardinfo,
                                 ARRAY_SIZE(innovator1510_boardinfo));
diff --git a/arch/arm/mach-omap1/board-palmte.c b/arch/arm/mach-omap1/board-palmte.c
index 90dd0431b0dc..4de258420f39 100644
--- a/arch/arm/mach-omap1/board-palmte.c
+++ b/arch/arm/mach-omap1/board-palmte.c
@@ -342,6 +342,14 @@ static void __init palmte_misc_gpio_setup(void)
 
 static void __init omap_palmte_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+        omap_cfg_reg(UART2_TX);
+        omap_cfg_reg(UART2_RTS);
+        omap_cfg_reg(UART3_TX);
+        omap_cfg_reg(UART3_RX);
+
         omap_board_config = palmte_config;
         omap_board_config_size = ARRAY_SIZE(palmte_config);
 
diff --git a/arch/arm/mach-omap1/board-palmtt.c b/arch/arm/mach-omap1/board-palmtt.c
index 8256139891ff..d972cf941b76 100644
--- a/arch/arm/mach-omap1/board-palmtt.c
+++ b/arch/arm/mach-omap1/board-palmtt.c
@@ -289,6 +289,14 @@ static void __init omap_mpu_wdt_mode(int mode) {
 
 static void __init omap_palmtt_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+        omap_cfg_reg(UART2_TX);
+        omap_cfg_reg(UART2_RTS);
+        omap_cfg_reg(UART3_TX);
+        omap_cfg_reg(UART3_RX);
+
         omap_mpu_wdt_mode(0);
 
         omap_board_config = palmtt_config;
diff --git a/arch/arm/mach-omap1/board-palmz71.c b/arch/arm/mach-omap1/board-palmz71.c
index 81b6bde1c5a3..986bd4df0e97 100644
--- a/arch/arm/mach-omap1/board-palmz71.c
+++ b/arch/arm/mach-omap1/board-palmz71.c
@@ -307,6 +307,14 @@ palmz71_gpio_setup(int early)
 static void __init
 omap_palmz71_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+        omap_cfg_reg(UART2_TX);
+        omap_cfg_reg(UART2_RTS);
+        omap_cfg_reg(UART3_TX);
+        omap_cfg_reg(UART3_RX);
+
         palmz71_gpio_setup(1);
         omap_mpu_wdt_mode(0);
 
diff --git a/arch/arm/mach-omap1/board-sx1.c b/arch/arm/mach-omap1/board-sx1.c
index 02c85ca2e1df..056ae64e0f55 100644
--- a/arch/arm/mach-omap1/board-sx1.c
+++ b/arch/arm/mach-omap1/board-sx1.c
@@ -377,6 +377,14 @@ static struct omap_board_config_kernel sx1_config[] __initdata = {
 
 static void __init omap_sx1_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+        omap_cfg_reg(UART2_TX);
+        omap_cfg_reg(UART2_RTS);
+        omap_cfg_reg(UART3_TX);
+        omap_cfg_reg(UART3_RX);
+
         platform_add_devices(sx1_devices, ARRAY_SIZE(sx1_devices));
 
         omap_board_config = sx1_config;
diff --git a/arch/arm/mach-omap1/board-voiceblue.c b/arch/arm/mach-omap1/board-voiceblue.c
index c06e7a553472..07b07522d5bf 100644
--- a/arch/arm/mach-omap1/board-voiceblue.c
+++ b/arch/arm/mach-omap1/board-voiceblue.c
@@ -152,6 +152,14 @@ static void __init voiceblue_init_irq(void)
 
 static void __init voiceblue_init(void)
 {
+        /* mux pins for uarts */
+        omap_cfg_reg(UART1_TX);
+        omap_cfg_reg(UART1_RTS);
+        omap_cfg_reg(UART2_TX);
+        omap_cfg_reg(UART2_RTS);
+        omap_cfg_reg(UART3_TX);
+        omap_cfg_reg(UART3_RX);
+
         /* Watchdog */
         gpio_request(0, "Watchdog");
         /* smc91x reset */
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index d496e50fec40..d23979bc0fd5 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -131,8 +131,6 @@ void __init omap_serial_init(void)
         }
 
         for (i = 0; i < OMAP_MAX_NR_PORTS; i++) {
-                unsigned char reg;
-
                 switch (i) {
                 case 0:
                         uart1_ck = clk_get(NULL, "uart1_ck");
@@ -143,16 +141,6 @@ void __init omap_serial_init(void)
                                 if (cpu_is_omap15xx())
                                         clk_set_rate(uart1_ck, 12000000);
                         }
-                        if (cpu_is_omap15xx()) {
-                                omap_cfg_reg(UART1_TX);
-                                omap_cfg_reg(UART1_RTS);
-                                if (machine_is_omap_innovator()) {
-                                        reg = fpga_read(OMAP1510_FPGA_POWER);
-                                        reg |= OMAP1510_FPGA_PCR_COM1_EN;
-                                        fpga_write(reg, OMAP1510_FPGA_POWER);
-                                        udelay(10);
-                                }
-                        }
                         break;
                 case 1:
                         uart2_ck = clk_get(NULL, "uart2_ck");
@@ -165,16 +153,6 @@ void __init omap_serial_init(void)
                                 else
                                         clk_set_rate(uart2_ck, 48000000);
                         }
-                        if (cpu_is_omap15xx()) {
-                                omap_cfg_reg(UART2_TX);
-                                omap_cfg_reg(UART2_RTS);
-                                if (machine_is_omap_innovator()) {
-                                        reg = fpga_read(OMAP1510_FPGA_POWER);
-                                        reg |= OMAP1510_FPGA_PCR_COM2_EN;
-                                        fpga_write(reg, OMAP1510_FPGA_POWER);
-                                        udelay(10);
-                                }
-                        }
                         break;
                 case 2:
                         uart3_ck = clk_get(NULL, "uart3_ck");
@@ -185,10 +163,6 @@ void __init omap_serial_init(void)
                                 if (cpu_is_omap15xx())
                                         clk_set_rate(uart3_ck, 12000000);
                         }
-                        if (cpu_is_omap15xx()) {
-                                omap_cfg_reg(UART3_TX);
-                                omap_cfg_reg(UART3_RX);
-                        }
                         break;
                 }
                 omap_serial_reset(&serial_platform_data[i]);