[PATCH 05/11] net: dwc_eth_qos: Use FIELD_PREP for ETH_SEL bitfield

[Patrice CHOTARD]

On 3/9/24 03:11, Marek Vasut wrote:
> Use FIELD_PREP to configure content of ETH_SEL bitfield in SYSCFG_PMCSETR
> register. No functional change.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> ---
> Cc: Christophe Roullier <christophe.roullier at st.com>
> Cc: Joe Hershberger <joe.hershberger at ni.com>
> Cc: Patrice Chotard <patrice.chotard at foss.st.com>
> Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
> Cc: Ramon Fried <rfried.dev at gmail.com>
> Cc: u-boot at dh-electronics.com
> Cc: uboot-stm32 at st-md-mailman.stormreply.com
> ---
>  drivers/net/dwc_eth_qos_stm32.c | 33 ++++++++++++++++-----------------
>  1 file changed, 16 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/net/dwc_eth_qos_stm32.c b/drivers/net/dwc_eth_qos_stm32.c
> index d7ec0c9be36..7545026b158 100644
> --- a/drivers/net/dwc_eth_qos_stm32.c
> +++ b/drivers/net/dwc_eth_qos_stm32.c
> @@ -26,6 +26,7 @@
>  #include <reset.h>
>  #include <syscon.h>
>  #include <wait_bit.h>
> +#include <linux/bitfield.h>
>  #include <linux/delay.h>
>  
>  #include "dwc_eth_qos.h"
> @@ -40,9 +41,9 @@
>  #define SYSCFG_PMCSETR_ETH_SELMII	BIT(20)
>  
>  #define SYSCFG_PMCSETR_ETH_SEL_MASK	GENMASK(23, 21)
> -#define SYSCFG_PMCSETR_ETH_SEL_GMII_MII	0
> -#define SYSCFG_PMCSETR_ETH_SEL_RGMII	BIT(21)
> -#define SYSCFG_PMCSETR_ETH_SEL_RMII	BIT(23)
> +#define SYSCFG_PMCSETR_ETH_SEL_GMII_MII	0x0
> +#define SYSCFG_PMCSETR_ETH_SEL_RGMII	0x1
> +#define SYSCFG_PMCSETR_ETH_SEL_RMII	0x4
>  
>  static ulong eqos_get_tick_clk_rate_stm32(struct udevice *dev)
>  {
> @@ -142,35 +143,33 @@ static int eqos_probe_syscfg_stm32(struct udevice *dev,
>  
>  	switch (interface_type) {
>  	case PHY_INTERFACE_MODE_MII:
> -		value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII |
> -			SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
> +		value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
> +				   SYSCFG_PMCSETR_ETH_SEL_GMII_MII);
> +		value |= SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
>  		log_debug("PHY_INTERFACE_MODE_MII\n");
>  		break;
>  	case PHY_INTERFACE_MODE_GMII:
> +		value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
> +				   SYSCFG_PMCSETR_ETH_SEL_GMII_MII);
>  		if (eth_clk_sel_reg)
> -			value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII |
> -				SYSCFG_PMCSETR_ETH_CLK_SEL;
> -		else
> -			value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII;
> +			value |= SYSCFG_PMCSETR_ETH_CLK_SEL;
>  		log_debug("PHY_INTERFACE_MODE_GMII\n");
>  		break;
>  	case PHY_INTERFACE_MODE_RMII:
> +		value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
> +				   SYSCFG_PMCSETR_ETH_SEL_RMII);
>  		if (eth_ref_clk_sel_reg)
> -			value = SYSCFG_PMCSETR_ETH_SEL_RMII |
> -				SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
> -		else
> -			value = SYSCFG_PMCSETR_ETH_SEL_RMII;
> +			value |= SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
>  		log_debug("PHY_INTERFACE_MODE_RMII\n");
>  		break;
>  	case PHY_INTERFACE_MODE_RGMII:
>  	case PHY_INTERFACE_MODE_RGMII_ID:
>  	case PHY_INTERFACE_MODE_RGMII_RXID:
>  	case PHY_INTERFACE_MODE_RGMII_TXID:
> +		value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
> +				   SYSCFG_PMCSETR_ETH_SEL_RGMII);
>  		if (eth_clk_sel_reg)
> -			value = SYSCFG_PMCSETR_ETH_SEL_RGMII |
> -				SYSCFG_PMCSETR_ETH_CLK_SEL;
> -		else
> -			value = SYSCFG_PMCSETR_ETH_SEL_RGMII;
> +			value |= SYSCFG_PMCSETR_ETH_CLK_SEL;
>  		log_debug("PHY_INTERFACE_MODE_RGMII\n");
>  		break;
>  	default:
Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>

Thanks
Patrice