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Date: Mon, 19 Aug 2013 14:39:54 -0700
From: Stephen Boyd <sboyd@...eaurora.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-serial@...r.kernel.org,
David Brown <davidb@...eaurora.org>
Subject: [PATCH 1/4] msm_serial: Switch clock consumer strings and simplify code
In downstream kernels we've standardized the clock consumer names
that MSM device drivers use. Replace the uart specific clock
names in this driver with the more standard 'core_clk' and
'iface_clk' names. Also simplify the code by assuming that
clk_prepare_enable() and clk_disable_unprepare() will properly
check for NULL pointers (it will because MSM uses the common
clock framework).
Cc: David Brown <davidb@...eaurora.org>
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
---
arch/arm/mach-msm/devices-msm7x00.c | 6 +++---
arch/arm/mach-msm/devices-msm7x30.c | 2 +-
arch/arm/mach-msm/devices-qsd8x50.c | 6 +++---
drivers/tty/serial/msm_serial.c | 19 +++++--------------
4 files changed, 12 insertions(+), 21 deletions(-)
diff --git a/arch/arm/mach-msm/devices-msm7x00.c b/arch/arm/mach-msm/devices-msm7x00.c
index 6d50fb9..aa2a3c7 100644
--- a/arch/arm/mach-msm/devices-msm7x00.c
+++ b/arch/arm/mach-msm/devices-msm7x00.c
@@ -456,9 +456,9 @@ static struct clk_pcom_desc msm_clocks_7x01a[] = {
CLK_PCOM("tsif_ref_clk", TSIF_REF_CLK, NULL, 0),
CLK_PCOM("tv_dac_clk", TV_DAC_CLK, NULL, 0),
CLK_PCOM("tv_enc_clk", TV_ENC_CLK, NULL, 0),
- CLK_PCOM("uart_clk", UART1_CLK, "msm_serial.0", OFF),
- CLK_PCOM("uart_clk", UART2_CLK, "msm_serial.1", 0),
- CLK_PCOM("uart_clk", UART3_CLK, "msm_serial.2", OFF),
+ CLK_PCOM("core_clk", UART1_CLK, "msm_serial.0", OFF),
+ CLK_PCOM("core_clk", UART2_CLK, "msm_serial.1", 0),
+ CLK_PCOM("core_clk", UART3_CLK, "msm_serial.2", OFF),
CLK_PCOM("uart1dm_clk", UART1DM_CLK, NULL, OFF),
CLK_PCOM("uart2dm_clk", UART2DM_CLK, NULL, 0),
CLK_PCOM("usb_hs_clk", USB_HS_CLK, "msm_hsusb", OFF),
diff --git a/arch/arm/mach-msm/devices-msm7x30.c b/arch/arm/mach-msm/devices-msm7x30.c
index d4db75a..597251e 100644
--- a/arch/arm/mach-msm/devices-msm7x30.c
+++ b/arch/arm/mach-msm/devices-msm7x30.c
@@ -211,7 +211,7 @@ static struct clk_pcom_desc msm_clocks_7x30[] = {
CLK_PCOM("spi_pclk", SPI_P_CLK, NULL, 0),
CLK_PCOM("tv_dac_clk", TV_DAC_CLK, NULL, 0),
CLK_PCOM("tv_enc_clk", TV_ENC_CLK, NULL, 0),
- CLK_PCOM("uart_clk", UART2_CLK, "msm_serial.1", 0),
+ CLK_PCOM("core_clk", UART2_CLK, "msm_serial.1", 0),
CLK_PCOM("usb_phy_clk", USB_PHY_CLK, NULL, 0),
CLK_PCOM("usb_hs_clk", USB_HS_CLK, NULL, OFF),
CLK_PCOM("usb_hs_pclk", USB_HS_P_CLK, NULL, OFF),
diff --git a/arch/arm/mach-msm/devices-qsd8x50.c b/arch/arm/mach-msm/devices-qsd8x50.c
index f551811..b7344a4 100644
--- a/arch/arm/mach-msm/devices-qsd8x50.c
+++ b/arch/arm/mach-msm/devices-qsd8x50.c
@@ -358,9 +358,9 @@ static struct clk_pcom_desc msm_clocks_8x50[] = {
CLK_PCOM("tsif_ref_clk", TSIF_REF_CLK, NULL, 0),
CLK_PCOM("tv_dac_clk", TV_DAC_CLK, NULL, 0),
CLK_PCOM("tv_enc_clk", TV_ENC_CLK, NULL, 0),
- CLK_PCOM("uart_clk", UART1_CLK, NULL, OFF),
- CLK_PCOM("uart_clk", UART2_CLK, NULL, 0),
- CLK_PCOM("uart_clk", UART3_CLK, "msm_serial.2", OFF),
+ CLK_PCOM("core_clk", UART1_CLK, NULL, OFF),
+ CLK_PCOM("core_clk", UART2_CLK, NULL, 0),
+ CLK_PCOM("core_clk", UART3_CLK, "msm_serial.2", OFF),
CLK_PCOM("uartdm_clk", UART1DM_CLK, NULL, OFF),
CLK_PCOM("uartdm_clk", UART2DM_CLK, NULL, 0),
CLK_PCOM("usb_hs_clk", USB_HS_CLK, NULL, OFF),
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 97642ec..7631313 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -416,8 +416,7 @@ static void msm_init_clock(struct uart_port *port)
struct msm_port *msm_port = UART_TO_MSM(port);
clk_prepare_enable(msm_port->clk);
- if (!IS_ERR(msm_port->pclk))
- clk_prepare_enable(msm_port->pclk);
+ clk_prepare_enable(msm_port->pclk);
msm_serial_set_mnd_regs(port);
}
@@ -693,13 +692,11 @@ static void msm_power(struct uart_port *port, unsigned int state,
switch (state) {
case 0:
clk_prepare_enable(msm_port->clk);
- if (!IS_ERR(msm_port->pclk))
- clk_prepare_enable(msm_port->pclk);
+ clk_prepare_enable(msm_port->pclk);
break;
case 3:
clk_disable_unprepare(msm_port->clk);
- if (!IS_ERR(msm_port->pclk))
- clk_disable_unprepare(msm_port->pclk);
+ clk_disable_unprepare(msm_port->pclk);
break;
default:
printk(KERN_ERR "msm_serial: Unknown PM state %d\n", state);
@@ -887,18 +884,12 @@ static int __init msm_serial_probe(struct platform_device *pdev)
else
msm_port->is_uartdm = 0;
- if (msm_port->is_uartdm) {
- msm_port->clk = devm_clk_get(&pdev->dev, "gsbi_uart_clk");
- msm_port->pclk = devm_clk_get(&pdev->dev, "gsbi_pclk");
- } else {
- msm_port->clk = devm_clk_get(&pdev->dev, "uart_clk");
- msm_port->pclk = ERR_PTR(-ENOENT);
- }
-
+ msm_port->clk = devm_clk_get(&pdev->dev, "core_clk");
if (IS_ERR(msm_port->clk))
return PTR_ERR(msm_port->clk);
if (msm_port->is_uartdm) {
+ msm_port->pclk = devm_clk_get(&pdev->dev, "iface_clk");
if (IS_ERR(msm_port->pclk))
return PTR_ERR(msm_port->pclk);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
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