From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fiJy5-00053K-SP for barebox@lists.infradead.org; Wed, 25 Jul 2018 13:36:55 +0000 From: Roland Hieber Date: Wed, 25 Jul 2018 15:36:11 +0200 Message-Id: <20180725133618.1510-7-r.hieber@pengutronix.de> In-Reply-To: <20180725133618.1510-1-r.hieber@pengutronix.de> References: <20180725133618.1510-1-r.hieber@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 06/13] ARM: MXS: refactor mx2*_power_init source configuration To: barebox@lists.infradead.org Cc: Roland Hieber Having three ints as parameter suggests that we can use up to 2^3 power configurations for the system, but when we look at the code, the power setup is packaged in if {...} else if {...} else if {...} blocks, so setting more than one parameter to 1 is useless here. Refactor the parameters into an enum to get rid of that suggestion. Signed-off-by: Roland Hieber --- arch/arm/boards/duckbill/lowlevel.c | 2 +- arch/arm/boards/freescale-mx28-evk/lowlevel.c | 2 +- arch/arm/boards/imx233-olinuxino/lowlevel.c | 2 +- arch/arm/boards/karo-tx28/lowlevel.c | 2 +- arch/arm/mach-mxs/include/mach/init.h | 20 ++++++-- arch/arm/mach-mxs/power-init.c | 49 +++++++------------ 6 files changed, 37 insertions(+), 40 deletions(-) diff --git a/arch/arm/boards/duckbill/lowlevel.c b/arch/arm/boards/duckbill/lowlevel.c index 393d4e1e12..ebda3aa047 100644 --- a/arch/arm/boards/duckbill/lowlevel.c +++ b/arch/arm/boards/duckbill/lowlevel.c @@ -51,7 +51,7 @@ static noinline void duckbill_init(void) pr_debug("initializing power...\n"); - mx28_power_init(0, 0, 1); + mx28_power_init(POWER_USE_5V); pr_debug("initializing SDRAM...\n"); diff --git a/arch/arm/boards/freescale-mx28-evk/lowlevel.c b/arch/arm/boards/freescale-mx28-evk/lowlevel.c index 196efe0346..64e3752bce 100644 --- a/arch/arm/boards/freescale-mx28-evk/lowlevel.c +++ b/arch/arm/boards/freescale-mx28-evk/lowlevel.c @@ -43,7 +43,7 @@ static noinline void freescale_mx28evk_init(void) pr_debug("initializing power...\n"); - mx28_power_init(0, 1, 0); + mx28_power_init(POWER_USE_BATTERY_INPUT); pr_debug("initializing SDRAM...\n"); diff --git a/arch/arm/boards/imx233-olinuxino/lowlevel.c b/arch/arm/boards/imx233-olinuxino/lowlevel.c index 63a65230b0..7a3cea006e 100644 --- a/arch/arm/boards/imx233-olinuxino/lowlevel.c +++ b/arch/arm/boards/imx233-olinuxino/lowlevel.c @@ -154,7 +154,7 @@ static noinline void imx23_olinuxino_init(void) pr_debug("initializing power...\n"); - mx23_power_init(0, 0, 1); + mx23_power_init(POWER_USE_5V); pr_debug("initializing SDRAM...\n"); diff --git a/arch/arm/boards/karo-tx28/lowlevel.c b/arch/arm/boards/karo-tx28/lowlevel.c index c01c760109..6ee4235b79 100644 --- a/arch/arm/boards/karo-tx28/lowlevel.c +++ b/arch/arm/boards/karo-tx28/lowlevel.c @@ -43,7 +43,7 @@ static noinline void karo_tx28_init(void) pr_debug("initializing power...\n"); - mx28_power_init(0, 1, 0); + mx28_power_init(POWER_USE_BATTERY_INPUT); pr_debug("initializing SDRAM...\n"); diff --git a/arch/arm/mach-mxs/include/mach/init.h b/arch/arm/mach-mxs/include/mach/init.h index 4b826363f1..5ca7a72042 100644 --- a/arch/arm/mach-mxs/include/mach/init.h +++ b/arch/arm/mach-mxs/include/mach/init.h @@ -12,10 +12,22 @@ void mxs_early_delay(int delay); -void mx23_power_init(int __has_battery, int __use_battery_input, - int __use_5v_input); -void mx28_power_init(int __has_battery, int __use_battery_input, - int __use_5v_input); +/** + * Power configuration of the system: + * - POWER_USE_5V: use 5V input as power supply + * - POWER_USE_BATTERY: use battery input when the system is supplied by a battery + * - POWER_USE_BATTERY_INPUT: use battery input when the system is supplied by + * a DC source (instead of a real battery) on the battery input + */ +enum mxs_power_config { + POWER_USE_5V = 0b00000000, + POWER_USE_BATTERY = 0b00000001, + POWER_USE_BATTERY_INPUT = 0b00000010, + __POWER_USE_MASK = 0b00000011, +}; + +void mx23_power_init(const int config); +void mx28_power_init(const int config); void mxs_power_wait_pswitch(void); extern const uint32_t mx28_dram_vals_default[190]; diff --git a/arch/arm/mach-mxs/power-init.c b/arch/arm/mach-mxs/power-init.c index 595b51c5ba..a07ff9d676 100644 --- a/arch/arm/mach-mxs/power-init.c +++ b/arch/arm/mach-mxs/power-init.c @@ -24,21 +24,7 @@ #include #include -/* - * has_battery - true when this board has a battery. - */ -static int has_battery; - -/* - * use_battery_input - true when this board is supplied from the - * battery input, but has a DC source instead of a real battery - */ -static int use_battery_input; - -/* - * use_5v_input - true when this board can use the 5V input - */ -static int use_5v_input; +static int power_config; static void mxs_power_status(void) { @@ -514,7 +500,8 @@ static void mxs_power_enable_4p2(void) POWER_5VCTRL_HEADROOM_ADJ_MASK, 0x4 << POWER_5VCTRL_HEADROOM_ADJ_OFFSET); - if (has_battery || use_battery_input) + if ((power_config & __POWER_USE_MASK) == POWER_USE_BATTERY || + (power_config & __POWER_USE_MASK) == POWER_USE_BATTERY_INPUT) dropout_ctrl = POWER_DCDC4P2_DROPOUT_CTRL_SRC_SEL; else dropout_ctrl = POWER_DCDC4P2_DROPOUT_CTRL_SRC_4P2; @@ -1182,16 +1169,15 @@ static void mx23_ungate_power(void) * * This function calls all the power block initialization functions in * proper sequence to start the power block. + * + * @config: see enum mxs_power_config for possible options */ -void mx23_power_init(int __has_battery, int __use_battery_input, - int __use_5v_input) +void mx23_power_init(const int config) { struct mxs_power_regs *power_regs = (struct mxs_power_regs *)IMX_POWER_BASE; - has_battery = __has_battery; - use_battery_input = __use_battery_input; - use_5v_input = __use_5v_input; + power_config = config; mx23_ungate_power(); @@ -1204,11 +1190,11 @@ void mx23_power_init(int __has_battery, int __use_battery_input, mxs_src_power_init(); - if (has_battery) + if ((power_config & __POWER_USE_MASK) == POWER_USE_BATTERY) mxs_power_configure_power_source(); - else if (use_battery_input) + else if ((power_config & __POWER_USE_MASK) == POWER_USE_BATTERY_INPUT) mxs_enable_battery_input(); - else if (use_5v_input) + else if ((power_config & __POWER_USE_MASK) == POWER_USE_5V) mxs_boot_valid_5v(); mxs_power_clock2pll(); @@ -1243,16 +1229,15 @@ void mx23_power_init(int __has_battery, int __use_battery_input, * * This function calls all the power block initialization functions in * proper sequence to start the power block. + * + * @config: see enum mxs_power_config for possible options */ -void mx28_power_init(int __has_battery, int __use_battery_input, - int __use_5v_input) +void mx28_power_init(const int config) { struct mxs_power_regs *power_regs = (struct mxs_power_regs *)IMX_POWER_BASE; - has_battery = __has_battery; - use_battery_input = __use_battery_input; - use_5v_input = __use_5v_input; + power_config = config; mxs_power_status(); mxs_power_clock2xtal(); @@ -1264,11 +1249,11 @@ void mx28_power_init(int __has_battery, int __use_battery_input, mxs_src_power_init(); - if (has_battery) + if ((power_config & __POWER_USE_MASK) == POWER_USE_BATTERY) mxs_power_configure_power_source(); - else if (use_battery_input) + else if ((power_config & __POWER_USE_MASK) == POWER_USE_BATTERY_INPUT) mxs_enable_battery_input(); - else if (use_5v_input) + else if ((power_config & __POWER_USE_MASK) == POWER_USE_5V) mxs_boot_valid_5v(); mxs_power_clock2pll(); -- 2.18.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox