>>-----Original Message-----
>>From: linux-omap-ow...@vger.kernel.org
>>[mailto:linux-omap-ow...@vger.kernel.org] On Behalf Of
>>Govindraj.R
>>Sent: Friday, June 04, 2010 7:14 PM
>>To: linux-omap@vger.kernel.org
>>Cc: Kevin Hilman; Aguirre, Sergio
>>Subject: [pm-wip/uart][PATCH 2/4] OMAP3: serial: Fix uart4 handling for 3630
>>
>>This patch makes the following:
>> - Adds missing wakeup padding register handling.
>> - Fixes a hardcode to use PER module ONLY on UART3.
>> - Muxmode usage needed for uart4 for 3630 for padconf
>> wakeup on rx line.
>>
>>Cc: Kevin Hilman <khil...@deeprootsystems.com>
>>Signed-off-by: Sergio Aguirre <saagui...@ti.com>
>>Signed-off-by: Govindraj.R <govindraj.r...@ti.com>
>>---
>> arch/arm/mach-omap2/serial.c | 30 +++++++++++++++++++++++++++++-
>> 1 files changed, 29 insertions(+), 1 deletions(-)
>>
>>diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
>>index da9fee6..70a9089 100644
>>--- a/arch/arm/mach-omap2/serial.c
>>+++ b/arch/arm/mach-omap2/serial.c
>>@@ -42,6 +42,7 @@
>> #include "prm.h"
>> #include "pm.h"
>> #include "cm.h"
>>+#include "mux.h"
>> #include "prm-regbits-34xx.h"
>>
>> #define UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV 0x52
>>@@ -68,6 +69,7 @@ struct omap_uart_state {
>> u32 wk_mask;
>> u32 padconf;
>> u32 dma_enabled;
>>+ u16 muxmode;
>>
>> struct clk *ick;
>> struct clk *fck;
>>@@ -229,8 +231,20 @@ static inline void omap_uart_disable_clocks(struct
>>omap_uart_state *uart)
>> omap_device_idle(uart->pdev);
>> }
>>
>>+static inline void omap_uart_setmux_mode(struct omap_uart_state *uart)
>>+{
>>+ u16 w = omap_ctrl_readw(uart->padconf);
>>+ w &= ~0x7;
>>+ w |= OMAP_MUX_MODE2;
Why it is hard coded to MUX_MODE2? Should it not be w |= uart->muxmode?
Regards
Thara
>>+ omap_ctrl_writew(w, uart->padconf);
>>+}
>>+
>> static void omap_uart_enable_wakeup(struct omap_uart_state *uart)
>> {
>>+ /* Set appropriate muxmode */
>>+ if (uart->muxmode && uart->padconf)
>>+ omap_uart_setmux_mode(uart);
>>+
>> /* Set wake-enable bit */
>> if (uart->wk_en && uart->wk_mask) {
>> u32 v = __raw_readl(uart->wk_en);
>>@@ -248,6 +262,10 @@ static void omap_uart_enable_wakeup(struct
>>omap_uart_state *uart)
>>
>> static void omap_uart_disable_wakeup(struct omap_uart_state *uart)
>> {
>>+ /* Set appropriate muxmode */
>>+ if (uart->muxmode && uart->padconf)
>>+ omap_uart_setmux_mode(uart);
>>+
>> /* Clear wake-enable bit */
>> if (uart->wk_en && uart->wk_mask) {
>> u32 v = __raw_readl(uart->wk_en);
>>@@ -338,6 +356,9 @@ void omap_uart_resume_idle(int num)
>> if (num == uart->num) {
>> omap_uart_enable_clocks(uart);
>>
>>+ if (uart->muxmode && uart->padconf)
>>+ omap_uart_setmux_mode(uart);
>>+
>> /* Check for IO pad wakeup */
>> if (cpu_is_omap34xx() && uart->padconf) {
>> u16 p = omap_ctrl_readw(uart->padconf);
>>@@ -416,9 +437,10 @@ static void omap_uart_idle_init(struct omap_uart_state
>>*uart)
>> omap_uart_smart_idle_enable(uart, 0);
>>
>> if (cpu_is_omap34xx()) {
>>- u32 mod = (uart->num == 2) ? OMAP3430_PER_MOD : CORE_MOD;
>>+ u32 mod = (uart->num > 1) ? OMAP3430_PER_MOD : CORE_MOD;
>> u32 wk_mask = 0;
>> u32 padconf = 0;
>>+ u16 muxmode = 0;
>>
>> uart->wk_en = OMAP34XX_PRM_REGADDR(mod, PM_WKEN1);
>> uart->wk_st = OMAP34XX_PRM_REGADDR(mod, PM_WKST1);
>>@@ -435,9 +457,15 @@ static void omap_uart_idle_init(struct omap_uart_state
>>*uart)
>> wk_mask = OMAP3430_ST_UART3_MASK;
>> padconf = 0x19e;
>> break;
>>+ case 3:
>>+ wk_mask = OMAP3630_ST_UART4_MASK;
>>+ padconf = 0x0d2;
>>+ muxmode = OMAP_MUX_MODE2;
>>+ break;
>> }
>> uart->wk_mask = wk_mask;
>> uart->padconf = padconf;
>>+ uart->muxmode = muxmode;
>> } else if (cpu_is_omap24xx()) {
>> u32 wk_mask = 0;
>>
>>--
>>1.6.3.3
>>
>>
>>
>>
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