From: Stephen Boyd <sboyd@codeaurora.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-serial@vger.kernel.org, David Brown <davidb@codeaurora.org>
Subject: [PATCH v2 1/5] msm_serial: Switch clock consumer strings and simplify code
Date: Tue, 20 Aug 2013 23:48:02 -0700 [thread overview]
Message-ID: <1377067686-31957-2-git-send-email-sboyd@codeaurora.org> (raw)
In-Reply-To: <1377067686-31957-1-git-send-email-sboyd@codeaurora.org>
In downstream kernel 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' and 'iface'
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@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.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..d83404d 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", UART1_CLK, "msm_serial.0", OFF),
+ CLK_PCOM("core", UART2_CLK, "msm_serial.1", 0),
+ CLK_PCOM("core", 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..14e2869 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", 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..2ed89b2 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", UART1_CLK, NULL, OFF),
+ CLK_PCOM("core", UART2_CLK, NULL, 0),
+ CLK_PCOM("core", 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..23651cc 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");
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");
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
next prev parent reply other threads:[~2013-08-21 6:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-21 6:48 [PATCH v2 0/5] Document msm_serial bindings and support newer uartdms Stephen Boyd
2013-08-21 6:48 ` Stephen Boyd [this message]
2013-08-21 6:48 ` [PATCH v2 2/5] devicetree: serial: Document msm_serial bindings Stephen Boyd
2013-08-21 15:30 ` Kumar Gala
2013-08-21 16:32 ` Stephen Boyd
2013-08-21 6:48 ` [PATCH v2 3/5] msm_serial: Add support for non-GSBI UARTDM devices Stephen Boyd
2013-08-21 6:48 ` [PATCH v2 4/5] ARM: dts: msm: Update uartdm compatible strings Stephen Boyd
2013-08-21 6:48 ` [PATCH v2 5/5] msm_serial: Send more than 1 character on the console w/ UARTDM Stephen Boyd
2013-08-27 23:23 ` [PATCH v2 0/5] Document msm_serial bindings and support newer uartdms Greg Kroah-Hartman
2013-08-27 23:48 ` Stephen Boyd
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