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authorMarek Vasut <marex@denx.de>2014-09-13 08:27:16 +0200
committerMarek Vasut <marex@denx.de>2014-10-06 17:46:49 +0200
commit5d8ad0cd3a472f9eaa3b8c63b6ad5d889fce6183 (patch)
tree119200ab014f3351e3c344f0f351416019bf0f3f /arch/arm
parenta832ddba55f79801b6f75b79e96c3f5e1469335a (diff)
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arm: socfpga: clock: Trim down code duplication
Pull out functions to read frequency of Main clock VCO and PLL clock VCO as the code is duplicated multiple times. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chin Liang See <clsee@altera.com> Cc: Dinh Nguyen <dinguyen@altera.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Tom Rini <trini@ti.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Pavel Machek <pavel@denx.de> Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com> Acked-by: Pavel Machek <pavel@denx.de>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/cpu/armv7/socfpga/clock_manager.c96
1 files changed, 38 insertions, 58 deletions
diff --git a/arch/arm/cpu/armv7/socfpga/clock_manager.c b/arch/arm/cpu/armv7/socfpga/clock_manager.c
index 7a6b3b1..ed2b419 100644
--- a/arch/arm/cpu/armv7/socfpga/clock_manager.c
+++ b/arch/arm/cpu/armv7/socfpga/clock_manager.c
@@ -361,7 +361,7 @@ void cm_basic_init(const cm_config_t *cfg)
writel(~0, &clock_manager_base->sdr_pll.en);
}
-unsigned long cm_get_mpu_clk_hz(void)
+static unsigned int cm_get_main_vco_clk_hz(void)
{
uint32_t reg, clock;
@@ -371,6 +371,37 @@ unsigned long cm_get_mpu_clk_hz(void)
(CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1);
clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1);
+ return clock;
+}
+
+static unsigned int cm_get_per_vco_clk_hz(void)
+{
+ uint32_t reg, clock = 0;
+
+ /* identify PER PLL clock source */
+ reg = readl(&clock_manager_base->per_pll.vco);
+ reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg);
+ if (reg == CLKMGR_VCO_SSRC_EOSC1)
+ clock = CONFIG_HPS_CLK_OSC1_HZ;
+ else if (reg == CLKMGR_VCO_SSRC_EOSC2)
+ clock = CONFIG_HPS_CLK_OSC2_HZ;
+ else if (reg == CLKMGR_VCO_SSRC_F2S)
+ clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ;
+
+ /* get the PER VCO clock */
+ reg = readl(&clock_manager_base->per_pll.vco);
+ clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1);
+ clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1);
+
+ return clock;
+}
+
+unsigned long cm_get_mpu_clk_hz(void)
+{
+ uint32_t reg, clock;
+
+ clock = cm_get_main_vco_clk_hz();
+
/* get the MPU clock */
reg = readl(&clock_manager_base->altera.mpuclk);
clock /= (reg + 1);
@@ -415,11 +446,7 @@ unsigned int cm_get_l4_sp_clk_hz(void)
reg = CLKMGR_MAINPLLGRP_L4SRC_L4SP_GET(reg);
if (reg == CLKMGR_L4_SP_CLK_SRC_MAINPLL) {
- /* get the main VCO clock */
- reg = readl(&clock_manager_base->main_pll.vco);
- clock = CONFIG_HPS_CLK_OSC1_HZ /
- (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1);
- clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1);
+ clock = cm_get_main_vco_clk_hz();
/* get the clock prior L4 SP divider (main clk) */
reg = readl(&clock_manager_base->altera.mainclk);
@@ -427,20 +454,7 @@ unsigned int cm_get_l4_sp_clk_hz(void)
reg = readl(&clock_manager_base->main_pll.mainclk);
clock /= (reg + 1);
} else if (reg == CLKMGR_L4_SP_CLK_SRC_PERPLL) {
- /* identify PER PLL clock source */
- reg = readl(&clock_manager_base->per_pll.vco);
- reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg);
- if (reg == CLKMGR_VCO_SSRC_EOSC1)
- clock = CONFIG_HPS_CLK_OSC1_HZ;
- else if (reg == CLKMGR_VCO_SSRC_EOSC2)
- clock = CONFIG_HPS_CLK_OSC2_HZ;
- else if (reg == CLKMGR_VCO_SSRC_F2S)
- clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ;
-
- /* get the PER VCO clock */
- reg = readl(&clock_manager_base->per_pll.vco);
- clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1);
- clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1);
+ clock = cm_get_per_vco_clk_hz();
/* get the clock prior L4 SP divider (periph_base_clk) */
reg = readl(&clock_manager_base->per_pll.perbaseclk);
@@ -466,30 +480,13 @@ unsigned int cm_get_mmc_controller_clk_hz(void)
if (reg == CLKMGR_SDMMC_CLK_SRC_F2S) {
clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ;
} else if (reg == CLKMGR_SDMMC_CLK_SRC_MAIN) {
- /* get the main VCO clock */
- reg = readl(&clock_manager_base->main_pll.vco);
- clock = CONFIG_HPS_CLK_OSC1_HZ /
- (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1);
- clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1);
+ clock = cm_get_main_vco_clk_hz();
/* get the SDMMC clock */
reg = readl(&clock_manager_base->main_pll.mainnandsdmmcclk);
clock /= (reg + 1);
} else if (reg == CLKMGR_SDMMC_CLK_SRC_PER) {
- /* identify PER PLL clock source */
- reg = readl(&clock_manager_base->per_pll.vco);
- reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg);
- if (reg == CLKMGR_VCO_SSRC_EOSC1)
- clock = CONFIG_HPS_CLK_OSC1_HZ;
- else if (reg == CLKMGR_VCO_SSRC_EOSC2)
- clock = CONFIG_HPS_CLK_OSC2_HZ;
- else if (reg == CLKMGR_VCO_SSRC_F2S)
- clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ;
-
- /* get the PER VCO clock */
- reg = readl(&clock_manager_base->per_pll.vco);
- clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1);
- clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1);
+ clock = cm_get_per_vco_clk_hz();
/* get the SDMMC clock */
reg = readl(&clock_manager_base->per_pll.pernandsdmmcclk);
@@ -512,30 +509,13 @@ unsigned int cm_get_qspi_controller_clk_hz(void)
if (reg == CLKMGR_QSPI_CLK_SRC_F2S) {
clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ;
} else if (reg == CLKMGR_QSPI_CLK_SRC_MAIN) {
- /* get the main VCO clock */
- reg = readl(&clock_manager_base->main_pll.vco);
- clock = CONFIG_HPS_CLK_OSC1_HZ /
- (CLKMGR_MAINPLLGRP_VCO_DENOM_GET(reg) + 1);
- clock *= (CLKMGR_MAINPLLGRP_VCO_NUMER_GET(reg) + 1);
+ clock = cm_get_main_vco_clk_hz();
/* get the qspi clock */
reg = readl(&clock_manager_base->main_pll.mainqspiclk);
clock /= (reg + 1);
} else if (reg == CLKMGR_QSPI_CLK_SRC_PER) {
- /* identify PER PLL clock source */
- reg = readl(&clock_manager_base->per_pll.vco);
- reg = CLKMGR_PERPLLGRP_VCO_SSRC_GET(reg);
- if (reg == CLKMGR_VCO_SSRC_EOSC1)
- clock = CONFIG_HPS_CLK_OSC1_HZ;
- else if (reg == CLKMGR_VCO_SSRC_EOSC2)
- clock = CONFIG_HPS_CLK_OSC2_HZ;
- else if (reg == CLKMGR_VCO_SSRC_F2S)
- clock = CONFIG_HPS_CLK_F2S_PER_REF_HZ;
-
- /* get the PER VCO clock */
- reg = readl(&clock_manager_base->per_pll.vco);
- clock /= (CLKMGR_PERPLLGRP_VCO_DENOM_GET(reg) + 1);
- clock *= (CLKMGR_PERPLLGRP_VCO_NUMER_GET(reg) + 1);
+ clock = cm_get_per_vco_clk_hz();
/* get the qspi clock */
reg = readl(&clock_manager_base->per_pll.perqspiclk);