ARM: OMAP: hwmod data: Add support for AM35xx UART4/ttyO3

Add hwmod support to enable access to UART4 of the AM35xx series of
chips.  The UART4 device referenced from the TRM will show up as ttyO3.

This was tested on an AM3505.

Signed-off-by: Kyle Manna <kyle.manna@fuel7.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 126cb49c0de7..3be90feca77c 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -164,6 +164,7 @@ static struct omap_hwmod omap3xxx_uart1_hwmod;
 static struct omap_hwmod omap3xxx_uart2_hwmod;
 static struct omap_hwmod omap3xxx_uart3_hwmod;
 static struct omap_hwmod omap3xxx_uart4_hwmod;
+static struct omap_hwmod am35xx_uart4_hwmod;
 static struct omap_hwmod omap3xxx_usbhsotg_hwmod;
 
 /* l3_core -> usbhsotg interface */
@@ -299,6 +300,23 @@ static struct omap_hwmod_ocp_if omap3_l4_per__uart4 = {
         .user           = OCP_USER_MPU | OCP_USER_SDMA,
 };
 
+/* AM35xx: L4 CORE -> UART4 interface */
+static struct omap_hwmod_addr_space am35xx_uart4_addr_space[] = {
+        {
+                .pa_start       = OMAP3_UART4_AM35XX_BASE,
+                .pa_end         = OMAP3_UART4_AM35XX_BASE + SZ_1K - 1,
+                .flags          = ADDR_MAP_ON_INIT | ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if am35xx_l4_core__uart4 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &am35xx_uart4_hwmod,
+        .clk            = "uart4_ick",
+        .addr           = am35xx_uart4_addr_space,
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
 /* L4 CORE -> I2C1 interface */
 static struct omap_hwmod_ocp_if omap3_l4_core__i2c1 = {
         .master         = &omap3xxx_l4_core_hwmod,
@@ -1309,6 +1327,39 @@ static struct omap_hwmod omap3xxx_uart4_hwmod = {
         .class          = &omap2_uart_class,
 };
 
+static struct omap_hwmod_irq_info am35xx_uart4_mpu_irqs[] = {
+        { .irq = INT_35XX_UART4_IRQ, },
+};
+
+static struct omap_hwmod_dma_info am35xx_uart4_sdma_reqs[] = {
+        { .name = "rx", .dma_req = AM35XX_DMA_UART4_RX, },
+        { .name = "tx", .dma_req = AM35XX_DMA_UART4_TX, },
+};
+
+static struct omap_hwmod_ocp_if *am35xx_uart4_slaves[] = {
+        &am35xx_l4_core__uart4,
+};
+
+static struct omap_hwmod am35xx_uart4_hwmod = {
+        .name           = "uart4",
+        .mpu_irqs       = am35xx_uart4_mpu_irqs,
+        .sdma_reqs      = am35xx_uart4_sdma_reqs,
+        .main_clk       = "uart4_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_UART4_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_EN_UART4_SHIFT,
+                },
+        },
+        .slaves         = am35xx_uart4_slaves,
+        .slaves_cnt     = ARRAY_SIZE(am35xx_uart4_slaves),
+        .class          = &omap2_uart_class,
+};
+
+
 static struct omap_hwmod_class i2c_class = {
         .name   = "i2c",
         .sysc   = &i2c_sysc,
@@ -3287,6 +3338,7 @@ static __initdata struct omap_hwmod *omap36xx_hwmods[] = {
 static __initdata struct omap_hwmod *am35xx_hwmods[] = {
         &omap3xxx_dss_core_hwmod, /* XXX ??? */
         &am35xx_usbhsotg_hwmod,
+        &am35xx_uart4_hwmod,
         NULL
 };