From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kukjin Kim Subject: [PATCH V3 6/7] ARM: S5PV310: Add FOUT APLL get rate function Date: Thu, 23 Dec 2010 14:49:56 +0900 Message-ID: <1293083397-15969-7-git-send-email-kgene.kim@samsung.com> References: <1293083397-15969-1-git-send-email-kgene.kim@samsung.com> Return-path: Received: from ganesha.gnumonks.org ([213.95.27.120]:56532 "EHLO ganesha.gnumonks.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751081Ab0LWGHu (ORCPT ); Thu, 23 Dec 2010 01:07:50 -0500 In-Reply-To: <1293083397-15969-1-git-send-email-kgene.kim@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: linux-samsung-soc@vger.kernel.org Cc: ben-linux@fluff.org, Jaecheol Lee , Sangwook Ju , Kukjin Kim From: Jaecheol Lee FOUT APLL clock is used as a source of ARM core clock. So we need that the clock source can be changed dynamically by using CPUFREQ driver. This patch can give correct frequency when calling clk_get_rate() function. Signed-off-by: Jaecheol Lee Signed-off-by: Sangwook Ju Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv310/clock.c | 16 +++++++++++++++- 1 files changed, 15 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-s5pv310/clock.c b/arch/arm/mach-s5pv310/clock.c index fdce2b4..752a07e 100644 --- a/arch/arm/mach-s5pv310/clock.c +++ b/arch/arm/mach-s5pv310/clock.c @@ -990,6 +990,17 @@ static struct clksrc_clk *sysclks[] = { &clk_dout_mmc4, }; +static int xtal_rate; + +static unsigned long s5pv310_fout_apll_get_rate(struct clk *clk) +{ + return s5p_get_pll45xx(xtal_rate, __raw_readl(S5P_APLL_CON0), pll_4508); +} + +static struct clk_ops s5pv310_fout_apll_ops = { + .get_rate = s5pv310_fout_apll_get_rate, +}; + void __init_or_cpufreq s5pv310_setup_clocks(void) { struct clk *xtal_clk; @@ -1013,6 +1024,9 @@ void __init_or_cpufreq s5pv310_setup_clocks(void) BUG_ON(IS_ERR(xtal_clk)); xtal = clk_get_rate(xtal_clk); + + xtal_rate = xtal; + clk_put(xtal_clk); printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal); @@ -1026,7 +1040,7 @@ void __init_or_cpufreq s5pv310_setup_clocks(void) vpll = s5p_get_pll46xx(vpllsrc, __raw_readl(S5P_VPLL_CON0), __raw_readl(S5P_VPLL_CON1), pll_4650); - clk_fout_apll.rate = apll; + clk_fout_apll.ops = &s5pv310_fout_apll_ops; clk_fout_mpll.rate = mpll; clk_fout_epll.rate = epll; clk_fout_vpll.rate = vpll; -- 1.6.2.5