adm5120: add 3.18 support

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44580 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 354 insertions, 0 deletions

diff --git a/target/linux/adm5120/patches-3.18/200-amba_pl010_hacks.patch b/target/linux/adm5120/patches-3.18/200-amba_pl010_hacks.patch
new file mode 100644
index 0000000000..8eee7a10ff
--- /dev/null
+++ b/target/linux/adm5120/patches-3.18/200-amba_pl010_hacks.patch
@@ -0,0 +1,354 @@
+--- a/drivers/tty/serial/amba-pl010.c
++++ b/drivers/tty/serial/amba-pl010.c
+@@ -48,11 +48,9 @@
+ #include <linux/slab.h>
+ #include <linux/io.h>
+ 
+-#define UART_NR		8
+-
+ #define SERIAL_AMBA_MAJOR	204
+ #define SERIAL_AMBA_MINOR	16
+-#define SERIAL_AMBA_NR		UART_NR
++#define SERIAL_AMBA_NR		CONFIG_SERIAL_AMBA_PL010_NUMPORTS
+ 
+ #define AMBA_ISR_PASS_LIMIT	256
+ 
+@@ -78,9 +76,9 @@ static void pl010_stop_tx(struct uart_po
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr &= ~UART010_CR_TIE;
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_start_tx(struct uart_port *port)
+@@ -88,9 +86,9 @@ static void pl010_start_tx(struct uart_p
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr |= UART010_CR_TIE;
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_stop_rx(struct uart_port *port)
+@@ -98,9 +96,9 @@ static void pl010_stop_rx(struct uart_po
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_enable_ms(struct uart_port *port)
+@@ -108,18 +106,18 @@ static void pl010_enable_ms(struct uart_
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+ 	unsigned int cr;
+ 
+-	cr = readb(uap->port.membase + UART010_CR);
++	cr = __raw_readl(uap->port.membase + UART010_CR);
+ 	cr |= UART010_CR_MSIE;
+-	writel(cr, uap->port.membase + UART010_CR);
++	__raw_writel(cr, uap->port.membase + UART010_CR);
+ }
+ 
+ static void pl010_rx_chars(struct uart_amba_port *uap)
+ {
+ 	unsigned int status, ch, flag, rsr, max_count = 256;
+ 
+-	status = readb(uap->port.membase + UART01x_FR);
++	status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	while (UART_RX_DATA(status) && max_count--) {
+-		ch = readb(uap->port.membase + UART01x_DR);
++		ch = __raw_readl(uap->port.membase + UART01x_DR);
+ 		flag = TTY_NORMAL;
+ 
+ 		uap->port.icount.rx++;
+@@ -128,9 +126,9 @@ static void pl010_rx_chars(struct uart_a
+ 		 * Note that the error handling code is
+ 		 * out of the main execution path
+ 		 */
+-		rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
++		rsr = __raw_readl(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
+ 		if (unlikely(rsr & UART01x_RSR_ANY)) {
+-			writel(0, uap->port.membase + UART01x_ECR);
++			__raw_writel(0, uap->port.membase + UART01x_ECR);
+ 
+ 			if (rsr & UART01x_RSR_BE) {
+ 				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
+@@ -160,7 +158,7 @@ static void pl010_rx_chars(struct uart_a
+ 		uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
+ 
+ 	ignore_char:
+-		status = readb(uap->port.membase + UART01x_FR);
++		status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	}
+ 	spin_unlock(&uap->port.lock);
+ 	tty_flip_buffer_push(&uap->port.state->port);
+@@ -173,7 +171,7 @@ static void pl010_tx_chars(struct uart_a
+ 	int count;
+ 
+ 	if (uap->port.x_char) {
+-		writel(uap->port.x_char, uap->port.membase + UART01x_DR);
++		__raw_writel(uap->port.x_char, uap->port.membase + UART01x_DR);
+ 		uap->port.icount.tx++;
+ 		uap->port.x_char = 0;
+ 		return;
+@@ -185,7 +183,7 @@ static void pl010_tx_chars(struct uart_a
+ 
+ 	count = uap->port.fifosize >> 1;
+ 	do {
+-		writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
++		__raw_writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
+ 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ 		uap->port.icount.tx++;
+ 		if (uart_circ_empty(xmit))
+@@ -203,9 +201,9 @@ static void pl010_modem_status(struct ua
+ {
+ 	unsigned int status, delta;
+ 
+-	writel(0, uap->port.membase + UART010_ICR);
++	__raw_writel(0, uap->port.membase + UART010_ICR);
+ 
+-	status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
++	status = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ 
+ 	delta = status ^ uap->old_status;
+ 	uap->old_status = status;
+@@ -233,7 +231,7 @@ static irqreturn_t pl010_int(int irq, vo
+ 
+ 	spin_lock(&uap->port.lock);
+ 
+-	status = readb(uap->port.membase + UART010_IIR);
++	status = __raw_readl(uap->port.membase + UART010_IIR);
+ 	if (status) {
+ 		do {
+ 			if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
+@@ -246,7 +244,7 @@ static irqreturn_t pl010_int(int irq, vo
+ 			if (pass_counter-- == 0)
+ 				break;
+ 
+-			status = readb(uap->port.membase + UART010_IIR);
++			status = __raw_readl(uap->port.membase + UART010_IIR);
+ 		} while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
+ 				   UART010_IIR_TIS));
+ 		handled = 1;
+@@ -260,7 +258,7 @@ static irqreturn_t pl010_int(int irq, vo
+ static unsigned int pl010_tx_empty(struct uart_port *port)
+ {
+ 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
+-	unsigned int status = readb(uap->port.membase + UART01x_FR);
++	unsigned int status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
+ }
+ 
+@@ -270,7 +268,7 @@ static unsigned int pl010_get_mctrl(stru
+ 	unsigned int result = 0;
+ 	unsigned int status;
+ 
+-	status = readb(uap->port.membase + UART01x_FR);
++	status = __raw_readl(uap->port.membase + UART01x_FR);
+ 	if (status & UART01x_FR_DCD)
+ 		result |= TIOCM_CAR;
+ 	if (status & UART01x_FR_DSR)
+@@ -296,12 +294,12 @@ static void pl010_break_ctl(struct uart_
+ 	unsigned int lcr_h;
+ 
+ 	spin_lock_irqsave(&uap->port.lock, flags);
+-	lcr_h = readb(uap->port.membase + UART010_LCRH);
++	lcr_h = __raw_readl(uap->port.membase + UART010_LCRH);
+ 	if (break_state == -1)
+ 		lcr_h |= UART01x_LCRH_BRK;
+ 	else
+ 		lcr_h &= ~UART01x_LCRH_BRK;
+-	writel(lcr_h, uap->port.membase + UART010_LCRH);
++	__raw_writel(lcr_h, uap->port.membase + UART010_LCRH);
+ 	spin_unlock_irqrestore(&uap->port.lock, flags);
+ }
+ 
+@@ -329,12 +327,12 @@ static int pl010_startup(struct uart_por
+ 	/*
+ 	 * initialise the old status of the modem signals
+ 	 */
+-	uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
++	uap->old_status = __raw_readl(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
+ 
+ 	/*
+ 	 * Finally, enable interrupts
+ 	 */
+-	writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
++	__raw_writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
+ 	       uap->port.membase + UART010_CR);
+ 
+ 	return 0;
+@@ -357,10 +355,10 @@ static void pl010_shutdown(struct uart_p
+ 	/*
+ 	 * disable all interrupts, disable the port
+ 	 */
+-	writel(0, uap->port.membase + UART010_CR);
++	__raw_writel(0, uap->port.membase + UART010_CR);
+ 
+ 	/* disable break condition and fifos */
+-	writel(readb(uap->port.membase + UART010_LCRH) &
++	__raw_writel(__raw_readl(uap->port.membase + UART010_LCRH) &
+ 		~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
+ 	       uap->port.membase + UART010_LCRH);
+ 
+@@ -382,7 +380,7 @@ pl010_set_termios(struct uart_port *port
+ 	/*
+ 	 * Ask the core to calculate the divisor for us.
+ 	 */
+-	baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16); 
++	baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
+ 	quot = uart_get_divisor(port, baud);
+ 
+ 	switch (termios->c_cflag & CSIZE) {
+@@ -445,25 +443,25 @@ pl010_set_termios(struct uart_port *port
+ 		uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
+ 
+ 	/* first, disable everything */
+-	old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
++	old_cr = __raw_readl(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
+ 
+ 	if (UART_ENABLE_MS(port, termios->c_cflag))
+ 		old_cr |= UART010_CR_MSIE;
+ 
+-	writel(0, uap->port.membase + UART010_CR);
++	__raw_writel(0, uap->port.membase + UART010_CR);
+ 
+ 	/* Set baud rate */
+ 	quot -= 1;
+-	writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
+-	writel(quot & 0xff, uap->port.membase + UART010_LCRL);
++	__raw_writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
++	__raw_writel(quot & 0xff, uap->port.membase + UART010_LCRL);
+ 
+ 	/*
+ 	 * ----------v----------v----------v----------v-----
+ 	 * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
+ 	 * ----------^----------^----------^----------^-----
+ 	 */
+-	writel(lcr_h, uap->port.membase + UART010_LCRH);
+-	writel(old_cr, uap->port.membase + UART010_CR);
++	__raw_writel(lcr_h, uap->port.membase + UART010_LCRH);
++	__raw_writel(old_cr, uap->port.membase + UART010_CR);
+ 
+ 	spin_unlock_irqrestore(&uap->port.lock, flags);
+ }
+@@ -545,7 +543,7 @@ static struct uart_ops amba_pl010_pops =
+ 	.verify_port	= pl010_verify_port,
+ };
+ 
+-static struct uart_amba_port *amba_ports[UART_NR];
++static struct uart_amba_port *amba_ports[SERIAL_AMBA_NR];
+ 
+ #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
+ 
+@@ -555,10 +553,10 @@ static void pl010_console_putchar(struct
+ 	unsigned int status;
+ 
+ 	do {
+-		status = readb(uap->port.membase + UART01x_FR);
++		status = __raw_readl(uap->port.membase + UART01x_FR);
+ 		barrier();
+ 	} while (!UART_TX_READY(status));
+-	writel(ch, uap->port.membase + UART01x_DR);
++	__raw_writel(ch, uap->port.membase + UART01x_DR);
+ }
+ 
+ static void
+@@ -572,8 +570,8 @@ pl010_console_write(struct console *co,
+ 	/*
+ 	 *	First save the CR then disable the interrupts
+ 	 */
+-	old_cr = readb(uap->port.membase + UART010_CR);
+-	writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
++	old_cr = __raw_readl(uap->port.membase + UART010_CR);
++	__raw_writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
+ 
+ 	uart_console_write(&uap->port, s, count, pl010_console_putchar);
+ 
+@@ -582,10 +580,10 @@ pl010_console_write(struct console *co,
+ 	 *	and restore the TCR
+ 	 */
+ 	do {
+-		status = readb(uap->port.membase + UART01x_FR);
++		status = __raw_readl(uap->port.membase + UART01x_FR);
+ 		barrier();
+ 	} while (status & UART01x_FR_BUSY);
+-	writel(old_cr, uap->port.membase + UART010_CR);
++	__raw_writel(old_cr, uap->port.membase + UART010_CR);
+ 
+ 	clk_disable(uap->clk);
+ }
+@@ -594,9 +592,9 @@ static void __init
+ pl010_console_get_options(struct uart_amba_port *uap, int *baud,
+ 			     int *parity, int *bits)
+ {
+-	if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
++	if (__raw_readl(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
+ 		unsigned int lcr_h, quot;
+-		lcr_h = readb(uap->port.membase + UART010_LCRH);
++		lcr_h = __raw_readl(uap->port.membase + UART010_LCRH);
+ 
+ 		*parity = 'n';
+ 		if (lcr_h & UART01x_LCRH_PEN) {
+@@ -611,8 +609,8 @@ pl010_console_get_options(struct uart_am
+ 		else
+ 			*bits = 8;
+ 
+-		quot = readb(uap->port.membase + UART010_LCRL) |
+-		       readb(uap->port.membase + UART010_LCRM) << 8;
++		quot = __raw_readl(uap->port.membase + UART010_LCRL) |
++		       __raw_readl(uap->port.membase + UART010_LCRM) << 8;
+ 		*baud = uap->port.uartclk / (16 * (quot + 1));
+ 	}
+ }
+@@ -631,7 +629,7 @@ static int __init pl010_console_setup(st
+ 	 * if so, search for the first available port that does have
+ 	 * console support.
+ 	 */
+-	if (co->index >= UART_NR)
++	if (co->index >= SERIAL_AMBA_NR)
+ 		co->index = 0;
+ 	uap = amba_ports[co->index];
+ 	if (!uap)
+@@ -673,7 +671,7 @@ static struct uart_driver amba_reg = {
+ 	.dev_name		= "ttyAM",
+ 	.major			= SERIAL_AMBA_MAJOR,
+ 	.minor			= SERIAL_AMBA_MINOR,
+-	.nr			= UART_NR,
++	.nr			= SERIAL_AMBA_NR,
+ 	.cons			= AMBA_CONSOLE,
+ };
+ 
+--- a/drivers/tty/serial/Kconfig
++++ b/drivers/tty/serial/Kconfig
+@@ -25,10 +25,18 @@ config SERIAL_AMBA_PL010
+ 	help
+ 	  This selects the ARM(R) AMBA(R) PrimeCell PL010 UART.  If you have
+ 	  an Integrator/AP or Integrator/PP2 platform, or if you have a
+-	  Cirrus Logic EP93xx CPU, say Y or M here.
++	  Cirrus Logic EP93xx CPU or an Infineon ADM5120 SOC, say Y or M here.
+ 
+ 	  If unsure, say N.
+ 
++config SERIAL_AMBA_PL010_NUMPORTS
++	int "Maximum number of AMBA PL010 serial ports"
++	depends on SERIAL_AMBA_PL010
++	default "8"
++	---help---
++	  Set this to the number of serial ports you want the AMBA PL010 driver
++	  to support.
++
+ config SERIAL_AMBA_PL010_CONSOLE
+ 	bool "Support for console on AMBA serial port"
+ 	depends on SERIAL_AMBA_PL010=y