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Date: Tue, 12 Nov 2013 13:27:29 -0500
From: Christopher Covington <cov@...eaurora.org>
To: "Ivan T. Ivanov" <iivanov@...sol.com>
CC: balbi@...com, gregkh@...uxfoundation.org, rob.herring@...xeda.com,
pawel.moll@....com, mark.rutland@....com, swarren@...dotorg.org,
ijc+devicetree@...lion.org.uk, davidb@...eaurora.org,
linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org, Daniel Walker <dwalker@...o99.com>
Subject: Re: [PATCH v4 01/15] usb: phy: msm: Move mach dependent code to platform
data
Hi Ivan,
On 11/12/2013 09:51 AM, Ivan T. Ivanov wrote:
> From: "Ivan T. Ivanov" <iivanov@...sol.com>
>
> This patch fix compilation error when driver is compiled
> in multi-platform builds.
>
> drivers/built-in.o: In function `msm_otg_link_clk_reset':
> ./drivers/usb/phy/phy-msm-usb.c:314: undefined reference to `clk_reset'
> ./drivers/usb/phy/phy-msm-usb.c:318: undefined reference to `clk_reset'
>
> Use platform data supplied reset handlers and adjust error
> messages reported when reset sequence fail.
>
> This is an intermediate step before adding support for reset
> framework and newer targets.
>
> Signed-off-by: Ivan T. Ivanov <iivanov@...sol.com>
> Acked-by: David Brown <davidb@...eaurora.org>
> Cc: Daniel Walker <dwalker@...o99.com>
> Cc: Felipe Balbi <balbi@...com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
> arch/arm/mach-msm/board-msm7x30.c | 35 +++++++++++++++++++++++++++++++++++
> arch/arm/mach-msm/board-qsd8x50.c | 35 +++++++++++++++++++++++++++++++++++
> drivers/usb/phy/phy-msm-usb.c | 35 +++++++++++++++--------------------
> include/linux/usb/msm_hsusb.h | 3 +++
> 4 files changed, 88 insertions(+), 20 deletions(-)
>
> diff --git a/arch/arm/mach-msm/board-msm7x30.c b/arch/arm/mach-msm/board-msm7x30.c
> index f9af5a4..46de789 100644
> --- a/arch/arm/mach-msm/board-msm7x30.c
> +++ b/arch/arm/mach-msm/board-msm7x30.c
> @@ -30,6 +30,7 @@
> #include <asm/memory.h>
> #include <asm/setup.h>
>
> +#include <mach/clk.h>
> #include <mach/msm_iomap.h>
> #include <mach/dma.h>
>
> @@ -60,10 +61,44 @@ static int hsusb_phy_init_seq[] = {
> -1
> };
>
> +static int hsusb_link_clk_reset(struct clk *link_clk, bool assert)
> +{
> + int ret;
> +
> + if (assert) {
> + ret = clk_reset(link_clk, CLK_RESET_ASSERT);
> + if (ret)
> + pr_err("usb hs_clk assert failed\n");
> + } else {
> + ret = clk_reset(link_clk, CLK_RESET_DEASSERT);
> + if (ret)
> + pr_err("usb hs_clk deassert failed\n");
> + }
> + return ret;
> +}
> +
> +static int hsusb_phy_clk_reset(struct clk *phy_clk)
> +{
> + int ret;
> +
> + ret = clk_reset(phy_clk, CLK_RESET_ASSERT);
> + if (ret) {
> + pr_err("usb phy clk assert failed\n");
> + return ret;
> + }
> + usleep_range(10000, 12000);
> + ret = clk_reset(phy_clk, CLK_RESET_DEASSERT);
> + if (ret)
> + pr_err("usb phy clk deassert failed\n");
> + return ret;
> +}
> +
> static struct msm_otg_platform_data msm_otg_pdata = {
> .phy_init_seq = hsusb_phy_init_seq,
> .mode = USB_PERIPHERAL,
> .otg_control = OTG_PHY_CONTROL,
> + .link_clk_reset = hsusb_link_clk_reset,
> + .phy_clk_reset = hsusb_phy_clk_reset,
> };
>
> struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
> diff --git a/arch/arm/mach-msm/board-qsd8x50.c b/arch/arm/mach-msm/board-qsd8x50.c
> index 5f933bc..9169ec3 100644
> --- a/arch/arm/mach-msm/board-qsd8x50.c
> +++ b/arch/arm/mach-msm/board-qsd8x50.c
> @@ -31,6 +31,7 @@
> #include <mach/irqs.h>
> #include <mach/sirc.h>
> #include <mach/vreg.h>
> +#include <mach/clk.h>
> #include <linux/platform_data/mmc-msm_sdcc.h>
>
> #include "devices.h"
> @@ -81,10 +82,44 @@ static int hsusb_phy_init_seq[] = {
> -1
> };
>
> +static int hsusb_link_clk_reset(struct clk *link_clk, bool assert)
> +{
> + int ret;
> +
> + if (assert) {
> + ret = clk_reset(link_clk, CLK_RESET_ASSERT);
> + if (ret)
> + pr_err("usb hs_clk assert failed\n");
> + } else {
> + ret = clk_reset(link_clk, CLK_RESET_DEASSERT);
> + if (ret)
> + pr_err("usb hs_clk deassert failed\n");
> + }
> + return ret;
> +}
> +
> +static int hsusb_phy_clk_reset(struct clk *phy_clk)
> +{
> + int ret;
> +
> + ret = clk_reset(phy_clk, CLK_RESET_ASSERT);
> + if (ret) {
> + pr_err("usb phy clk assert failed\n");
> + return ret;
> + }
> + usleep_range(10000, 12000);
> + ret = clk_reset(phy_clk, CLK_RESET_DEASSERT);
> + if (ret)
> + pr_err("usb phy clk deassert failed\n");
> + return ret;
> +}
Why are there identical, static definitions of hsusb_link_clk_reset and
hsusb_phy_clk_reset across the two board files? Why not share a single
non-static set of definitions?
Thanks,
Christopher
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by the Linux Foundation.
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