From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:29783 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754381Ab0LQAuR (ORCPT ); Thu, 16 Dec 2010 19:50:17 -0500 From: Stephen Boyd Subject: [PATCH 15/22] msm: clock-pcom: Add pbus specific clock ops Date: Thu, 16 Dec 2010 16:49:59 -0800 Message-Id: <1292547006-19741-16-git-send-email-sboyd@codeaurora.org> In-Reply-To: <1292547006-19741-1-git-send-email-sboyd@codeaurora.org> References: <1292547006-19741-1-git-send-email-sboyd@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org List-ID: To: linux-arm-msm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, David Brown , Brian Swetland , =?UTF-8?q?Arve=20Hj=F8nnev=E5g?= , Saravana Kannan The pbus clock always runs at half the ebi1 clock frequency. Since ebi1 clock votes are dropped when the application processor is power collapsed, the ebi1 clock is reserved for the acpuclock driver. Other drivers which have ebi1 clock requirements that are independent of application processor power status use the pbus. To keep this change transparent across drivers and SoCs, add new ops that divides the rate by 2 before sending the request to the modem. Reviewed-by: Saravana Kannan Signed-off-by: Stephen Boyd --- arch/arm/mach-msm/clock-pcom.c | 29 +++++++++++++++++++++++++++++ arch/arm/mach-msm/clock-pcom.h | 1 + arch/arm/mach-msm/devices-msm7x30.c | 9 ++++++++- 3 files changed, 38 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-msm/clock-pcom.c b/arch/arm/mach-msm/clock-pcom.c index 358e065..4616bbc 100644 --- a/arch/arm/mach-msm/clock-pcom.c +++ b/arch/arm/mach-msm/clock-pcom.c @@ -188,3 +188,32 @@ struct clk_ops clk_ops_pcom = { .round_rate = pc_clk_round_rate, .is_local = pc_clk_is_local, }; + +int pc_clk_set_rate2(unsigned id, unsigned rate) +{ + return pc_clk_set_rate(id, rate / 2); +} + +int pc_clk_set_min_rate2(unsigned id, unsigned rate) +{ + return pc_clk_set_min_rate(id, rate / 2); +} + +unsigned pc_clk_get_rate2(unsigned id) +{ + return pc_clk_get_rate(id) * 2; +} + +struct clk_ops clk_ops_pcom_div2 = { + .enable = pc_clk_enable, + .disable = pc_clk_disable, + .reset = pc_clk_reset, + .set_rate = pc_clk_set_rate2, + .set_min_rate = pc_clk_set_min_rate2, + .set_flags = pc_clk_set_flags, + .get_rate = pc_clk_get_rate2, + .measure_rate = pc_clk_measure_rate, + .is_enabled = pc_clk_is_enabled, + .round_rate = pc_clk_round_rate, + .is_local = pc_clk_is_local, +}; diff --git a/arch/arm/mach-msm/clock-pcom.h b/arch/arm/mach-msm/clock-pcom.h index 2c813f1..e2bca82 100644 --- a/arch/arm/mach-msm/clock-pcom.h +++ b/arch/arm/mach-msm/clock-pcom.h @@ -139,6 +139,7 @@ struct clk_ops; extern struct clk_ops clk_ops_pcom; +extern struct clk_ops clk_ops_pcom_div2; int pc_clk_reset(unsigned id, enum clk_reset_action action); diff --git a/arch/arm/mach-msm/devices-msm7x30.c b/arch/arm/mach-msm/devices-msm7x30.c index 55382c4..72da7cc 100644 --- a/arch/arm/mach-msm/devices-msm7x30.c +++ b/arch/arm/mach-msm/devices-msm7x30.c @@ -68,7 +68,14 @@ struct clk msm_clocks_7x30[] = { CLK_PCOM("uart_clk", UART3_CLK, NULL, OFF), CLK_PCOM("usb_phy_clk", USB_PHY_CLK, NULL, 0), CLK_PCOM("vdc_clk", VDC_CLK, NULL, OFF | CLK_MIN), - CLK_PCOM("pbus_clk", PBUS_CLK, NULL, CLK_MIN), + { + .name = "pbus_clk", + .id = P_PBUS_CLK, + .remote_id = P_PBUS_CLK, + .ops = &clk_ops_pcom_div2, + .flags = CLK_MIN, + .dbg_name = "pbus_clk", + }, CLK_7X30("adm_clk", ADM_CLK, NULL, 0), CLK_7X30L("adm_pclk", ADM_P_CLK, NULL, 0), -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.