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Fri, 20 Jun 2025 13:36:49 -0400 From: Jorge Marques Date: Fri, 20 Jun 2025 18:54:59 +0200 Subject: [PATCH 1/3] i3c: master: Add inline i3c_master_readsl and i3c_master_writesl Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20250620-i3c-writesl-readsl-v1-1-e0aa1c014dff@analog.com> References: <20250620-i3c-writesl-readsl-v1-0-e0aa1c014dff@analog.com> In-Reply-To: <20250620-i3c-writesl-readsl-v1-0-e0aa1c014dff@analog.com> To: Alexandre Belloni , Frank Li , =?utf-8?q?Przemys=C5=82aw_Gaj?= CC: , , "Jorge Marques" X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1750438498; l=1842; i=jorge.marques@analog.com; s=20250303; h=from:subject:message-id; bh=PS5s/QBW43OvzQxcKYQhEXkr0Batot5Uxg2zA/CNRwU=; b=mEAEkZYVoburTPfWo12Tpjwgh0p1lOuw69ATrEK+H/3fePr3tg5OSfgLxOt3CF5AQKhWw1Zqc O7gDLrOq6CjBifIWM/+Z6pEfrXJTl8bn3GJBmyvxKYvHcGXlmNxeHfj X-Developer-Key: i=jorge.marques@analog.com; 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Signed-off-by: Jorge Marques Suggested-by: Wolfram Sang --- include/linux/i3c/master.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h index c67922ece617d6320c0c7e4838c2e7edda8c19f5..11401f2acb42e4d3a60df33b7c7= 94d8a0360cdc2 100644 --- a/include/linux/i3c/master.h +++ b/include/linux/i3c/master.h @@ -674,6 +674,42 @@ i3c_master_get_bus(struct i3c_master_controller *maste= r) return &master->bus; } =20 +/** + * i3c_master_writesl- Write bytes to long memory region from byte array + * @addr: Register to write to + * @bytes: Pointer to the data bytes to write + * @nbytes: Number of bytes to write + */ +static inline void i3c_master_writesl(void __iomem *addr, const u8 *bytes, + int nbytes) +{ +writesl(addr, bytes, nbytes / 4); + if (nbytes & 3) { + u32 tmp =3D 0; + + memcpy(&tmp, bytes + (nbytes & ~3), nbytes & 3); + writel(tmp, addr); + } +} + +/** + * i3c_master_readsl - Read bytes from long memory region to byte array + * @addr: Register to read from + * @bytes: Pointer to the buffer to store read bytes + * @nbytes: Number of bytes to read + */ +static inline void i3c_master_readsl(const void __iomem *addr, u8 *bytes, + int nbytes) +{ +readsl(addr, bytes, nbytes / 4); + if (nbytes & 3) { + u32 tmp; + + tmp =3D readl(addr); + memcpy(bytes + (nbytes & ~3), &tmp, nbytes & 3); + } +} + struct i3c_generic_ibi_pool; =20 struct i3c_generic_ibi_pool * --=20 2.49.0