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[177.69.253.233]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-11dcaee7076sm12404561c88.4.2025.11.27.16.38.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Nov 2025 16:39:00 -0800 (PST) From: "Rafael V. Volkmer" To: ukleinek@kernel.org Cc: linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, rafael.v.volkmer@gmail.com Subject: [PATCH v7 4/9] pwm: tiehrpwm: derive PERIOD_MAX from TBPRD field Date: Thu, 27 Nov 2025 21:36:29 -0300 Message-ID: <20251128003634.247529-5-rafael.v.volkmer@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251128003634.247529-1-rafael.v.volkmer@gmail.com> References: <20251128003634.247529-1-rafael.v.volkmer@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Replace the open-coded PERIOD_MAX constant (0x10000) with a definition derived from the TBPRD field layout. Introduce TIEHRPWM_TBPRD_TBPRD to describe the 16-bit TBPRD field and compute TIEHRPWM_PERIOD_MAX as FIELD_MAX(TIEHRPWM_TBPRD_TBPRD) + 1. This keeps the effective upper bound unchanged while tying it directly to the hardware register layout instead of a hard-coded literal. No functional change intended. Signed-off-by: Rafael V. Volkmer --- drivers/pwm/pwm-tiehrpwm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c index 0802f0553587..4b8b4a9e7379 100644 --- a/drivers/pwm/pwm-tiehrpwm.c +++ b/drivers/pwm/pwm-tiehrpwm.c @@ -38,7 +38,9 @@ =20 #define TIEHRPWM_CLKDIV_MAX 7 #define TIEHRPWM_HSPCLKDIV_MAX 7 -#define TIEHRPWM_PERIOD_MAX 0x10000 + +#define TIEHRPWM_TBPRD_TBPRD GENMASK(15, 0) +#define TIEHRPWM_PERIOD_MAX (FIELD_MAX(TIEHRPWM_TBPRD_TBPRD) + 1) =20 /* compare module registers */ #define TIEHRPWM_CMPA 0x12 --=20 2.43.0