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ath79: drop upstreamed patch

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This patch was backported to the 5.4 kernel tree as commit
c2d5c4df27e0 at least since release v5.4.28. Since then, it enables RX
an TX ready override twice.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer 2021-01-01 15:41:33 +01:00
parent 9b1b89229f
commit 9dc15e36c8
2 changed files with 7 additions and 71 deletions
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64
target/linux/ath79/patches-5.4/0060-serial-ar933x_uart-set-UART_CS_-RX-TX-_READY_ORIDE.patch
View File

@ -1,64 +0,0 @@
From patchwork Fri Feb 7 09:53:35 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Daniel Golle <daniel@makrotopia.org>
X-Patchwork-Id: 1190470
Date: Fri, 7 Feb 2020 11:53:35 +0200
From: Daniel Golle <daniel@makrotopia.org>
To: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>,
Chuanhong Guo <gch981213@gmail.com>,
Eitan Cohen <eitan@neot-semadar.com>,
Ori Gofen <origofen@gmail.com>
Subject: [PATCH] serial: ar933x_uart: set UART_CS_{RX,TX}_READY_ORIDE
Message-ID: <20200207095335.GA179836@makrotopia.org>
MIME-Version: 1.0
Content-Disposition: inline
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
On AR934x this UART is usually not initialized by the bootloader
as it is only used as a secondary serial port while the primary
UART is a newly introduced NS16550-compatible.
In order to make use of the ar933x-uart on AR934x without RTS/CTS
hardware flow control, one needs to set the
UART_CS_{RX,TX}_READY_ORIDE bits as other than on AR933x where this
UART is used as primary/console, the bootloader on AR934x typically
doesn't set those bits.
Setting them explicitely on AR933x should not do any harm, so just
set them unconditionally.
Tested-by: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/tty/serial/ar933x_uart.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -290,6 +290,10 @@ static void ar933x_uart_set_termios(stru
ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
AR933X_UART_CS_TX_READY_ORIDE | AR933X_UART_CS_RX_READY_ORIDE);
+ /* enable RX and TX ready overide */
+ ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
+ AR933X_UART_CS_TX_READY_ORIDE | AR933X_UART_CS_RX_READY_ORIDE);
+
/* reenable the UART */
ar933x_uart_rmw(up, AR933X_UART_CS_REG,
AR933X_UART_CS_IF_MODE_M << AR933X_UART_CS_IF_MODE_S,
@@ -424,6 +428,10 @@ static int ar933x_uart_startup(struct ua
/* enable RX and TX ready overide */
ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
+ AR933X_UART_CS_TX_READY_ORIDE | AR933X_UART_CS_RX_READY_ORIDE);
+
+ /* enable RX and TX ready overide */
+ ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
AR933X_UART_CS_TX_READY_ORIDE | AR933X_UART_CS_RX_READY_ORIDE);
/* Enable RX interrupts */

14
target/linux/ath79/patches-5.4/0061-tty-serial-ar933x-uart-rs485-gpio.patch
View File

@ -160,7 +160,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
}
static void ar933x_uart_break_ctl(struct uart_port *port, int break_state)
@@ -340,11 +397,20 @@ static void ar933x_uart_rx_chars(struct
@@ -336,11 +393,20 @@ static void ar933x_uart_rx_chars(struct
static void ar933x_uart_tx_chars(struct ar933x_uart_port *up)
{
struct circ_buf *xmit = &up->port.state->xmit;
@ -181,7 +181,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
count = up->port.fifosize;
do {
unsigned int rdata;
@@ -372,8 +438,14 @@ static void ar933x_uart_tx_chars(struct
@@ -368,8 +434,14 @@ static void ar933x_uart_tx_chars(struct
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&up->port);
@ -197,7 +197,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
}
static irqreturn_t ar933x_uart_interrupt(int irq, void *dev_id)
@@ -435,8 +507,7 @@ static int ar933x_uart_startup(struct ua
@@ -427,8 +499,7 @@ static int ar933x_uart_startup(struct ua
AR933X_UART_CS_TX_READY_ORIDE | AR933X_UART_CS_RX_READY_ORIDE);
/* Enable RX interrupts */
@ -207,7 +207,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
spin_unlock_irqrestore(&up->port.lock, flags);
@@ -519,6 +590,21 @@ static const struct uart_ops ar933x_uart
@@ -511,6 +582,21 @@ static const struct uart_ops ar933x_uart
.verify_port = ar933x_uart_verify_port,
};
@ -229,7 +229,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
#ifdef CONFIG_SERIAL_AR933X_CONSOLE
static struct ar933x_uart_port *
ar933x_console_ports[CONFIG_SERIAL_AR933X_NR_UARTS];
@@ -688,6 +774,8 @@ static int ar933x_uart_probe(struct plat
@@ -680,6 +766,8 @@ static int ar933x_uart_probe(struct plat
goto err_disable_clk;
}
@ -238,7 +238,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
port->mapbase = mem_res->start;
port->line = id;
port->irq = irq_res->start;
@@ -698,6 +786,7 @@ static int ar933x_uart_probe(struct plat
@@ -690,6 +778,7 @@ static int ar933x_uart_probe(struct plat
port->regshift = 2;
port->fifosize = AR933X_UART_FIFO_SIZE;
port->ops = &ar933x_uart_ops;
@ -246,7 +246,7 @@ v2: use bool to indicate ongoing half-duplex send, use it afterwards
baud = ar933x_uart_get_baud(port->uartclk, AR933X_UART_MAX_SCALE, 1);
up->min_baud = max_t(unsigned int, baud, AR933X_UART_MIN_BAUD);
@@ -705,6 +794,18 @@ static int ar933x_uart_probe(struct plat
@@ -697,6 +786,18 @@ static int ar933x_uart_probe(struct plat
baud = ar933x_uart_get_baud(port->uartclk, 0, AR933X_UART_MAX_STEP);
up->max_baud = min_t(unsigned int, baud, AR933X_UART_MAX_BAUD);