From 9dc15e36c8b82f0c30abba846c5f5e50ec7968ee Mon Sep 17 00:00:00 2001 From: David Bauer Date: Fri, 1 Jan 2021 15:41:33 +0100 Subject: [PATCH] ath79: drop upstreamed patch 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 --- ...uart-set-UART_CS_-RX-TX-_READY_ORIDE.patch | 64 ------------------- ...61-tty-serial-ar933x-uart-rs485-gpio.patch | 14 ++-- 2 files changed, 7 insertions(+), 71 deletions(-) delete mode 100644 target/linux/ath79/patches-5.4/0060-serial-ar933x_uart-set-UART_CS_-RX-TX-_READY_ORIDE.patch diff --git a/target/linux/ath79/patches-5.4/0060-serial-ar933x_uart-set-UART_CS_-RX-TX-_READY_ORIDE.patch b/target/linux/ath79/patches-5.4/0060-serial-ar933x_uart-set-UART_CS_-RX-TX-_READY_ORIDE.patch deleted file mode 100644 index 30828d693c..0000000000 --- a/target/linux/ath79/patches-5.4/0060-serial-ar933x_uart-set-UART_CS_-RX-TX-_READY_ORIDE.patch +++ /dev/null @@ -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 -X-Patchwork-Id: 1190470 -Date: Fri, 7 Feb 2020 11:53:35 +0200 -From: Daniel Golle -To: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org -Cc: Greg Kroah-Hartman , - Jiri Slaby , - Chuanhong Guo , - Eitan Cohen , - Ori Gofen -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: -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 -Signed-off-by: Daniel Golle ---- - 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 */ diff --git a/target/linux/ath79/patches-5.4/0061-tty-serial-ar933x-uart-rs485-gpio.patch b/target/linux/ath79/patches-5.4/0061-tty-serial-ar933x-uart-rs485-gpio.patch index fda91bfe7e..59c46d507a 100644 --- a/target/linux/ath79/patches-5.4/0061-tty-serial-ar933x-uart-rs485-gpio.patch +++ b/target/linux/ath79/patches-5.4/0061-tty-serial-ar933x-uart-rs485-gpio.patch @@ -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);