From 28f65c11f2ffb3957259dece647a24f8ad2e241b Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Thu, 9 Jun 2011 09:13:32 -0700 Subject: treewide: Convert uses of struct resource to resource_size(ptr) Several fixes as well where the +1 was missing. Done via coccinelle scripts like: @@ struct resource *ptr; @@ - ptr->end - ptr->start + 1 + resource_size(ptr) and some grep and typing. Mostly uncompiled, no cross-compilers. Signed-off-by: Joe Perches Signed-off-by: Jiri Kosina --- drivers/tty/serial/imx.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/tty/serial/imx.c') diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index a54473123e0a..22fe801cce31 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -954,7 +954,7 @@ static void imx_release_port(struct uart_port *port) struct resource *mmres; mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(mmres->start, mmres->end - mmres->start + 1); + release_mem_region(mmres->start, resource_size(mmres)); } /* @@ -970,8 +970,7 @@ static int imx_request_port(struct uart_port *port) if (!mmres) return -ENODEV; - ret = request_mem_region(mmres->start, mmres->end - mmres->start + 1, - "imx-uart"); + ret = request_mem_region(mmres->start, resource_size(mmres), "imx-uart"); return ret ? 0 : -EBUSY; } -- cgit v1.2.3 From fe6b540ac033be6e9fa00dab1c8902dea0ad4016 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Sat, 25 Jun 2011 02:04:33 +0800 Subject: serial/imx: get rid of the uses of cpu_is_mx1() The patch removes all the uses of cpu_is_mx1(). Instead, it uses the .id_table of platform_driver to distinguish the uart device type, IMX1_UART and IMX21_UART. The IMX21_UART type runs on all i.mx except i.mx1. A couple of !cpu_is_mx1 logic gets turned into is_imx21_uart, as the codes wrapped there are really IMX21 type uart specific. It also removes macro MX1_UCR3_REF25 and MX1_UCR3_REF30 which are not used anywhere. Signed-off-by: Shawn Guo Cc: Sascha Hauer Cc: Alan Cox Cc: Greg Kroah-Hartman Acked-by: Grant Likely --- arch/arm/mach-imx/clock-imx1.c | 6 +- arch/arm/mach-imx/clock-imx21.c | 8 +-- arch/arm/mach-imx/clock-imx25.c | 11 ++-- arch/arm/mach-imx/clock-imx27.c | 13 ++-- arch/arm/mach-imx/clock-imx31.c | 11 ++-- arch/arm/mach-imx/clock-imx35.c | 7 ++- arch/arm/mach-mx5/clock-mx51-mx53.c | 18 +++--- arch/arm/plat-mxc/devices/platform-imx-uart.c | 7 ++- drivers/tty/serial/imx.c | 85 ++++++++++++++++++++++----- 9 files changed, 113 insertions(+), 53 deletions(-) (limited to 'drivers/tty/serial/imx.c') diff --git a/arch/arm/mach-imx/clock-imx1.c b/arch/arm/mach-imx/clock-imx1.c index dcc41728fe72..4aabeb241563 100644 --- a/arch/arm/mach-imx/clock-imx1.c +++ b/arch/arm/mach-imx/clock-imx1.c @@ -587,9 +587,9 @@ static struct clk_lookup lookups[] __initdata = { _REGISTER_CLOCK(NULL, "mma", mma_clk) _REGISTER_CLOCK("imx_udc.0", NULL, usbd_clk) _REGISTER_CLOCK(NULL, "gpt", gpt_clk) - _REGISTER_CLOCK("imx-uart.0", NULL, uart_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart_clk) + _REGISTER_CLOCK("imx1-uart.0", NULL, uart_clk) + _REGISTER_CLOCK("imx1-uart.1", NULL, uart_clk) + _REGISTER_CLOCK("imx1-uart.2", NULL, uart_clk) _REGISTER_CLOCK("imx-i2c.0", NULL, i2c_clk) _REGISTER_CLOCK("imx1-cspi.0", NULL, spi_clk) _REGISTER_CLOCK("imx1-cspi.1", NULL, spi_clk) diff --git a/arch/arm/mach-imx/clock-imx21.c b/arch/arm/mach-imx/clock-imx21.c index bf30a8c7ce6f..ee15d8c9db08 100644 --- a/arch/arm/mach-imx/clock-imx21.c +++ b/arch/arm/mach-imx/clock-imx21.c @@ -1162,10 +1162,10 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK(NULL, "perclk3", per_clk[2]) _REGISTER_CLOCK(NULL, "perclk4", per_clk[3]) _REGISTER_CLOCK(NULL, "clko", clko_clk) - _REGISTER_CLOCK("imx-uart.0", NULL, uart_clk[0]) - _REGISTER_CLOCK("imx-uart.1", NULL, uart_clk[1]) - _REGISTER_CLOCK("imx-uart.2", NULL, uart_clk[2]) - _REGISTER_CLOCK("imx-uart.3", NULL, uart_clk[3]) + _REGISTER_CLOCK("imx21-uart.0", NULL, uart_clk[0]) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart_clk[1]) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart_clk[2]) + _REGISTER_CLOCK("imx21-uart.3", NULL, uart_clk[3]) _REGISTER_CLOCK(NULL, "gpt1", gpt_clk[0]) _REGISTER_CLOCK(NULL, "gpt1", gpt_clk[1]) _REGISTER_CLOCK(NULL, "gpt1", gpt_clk[2]) diff --git a/arch/arm/mach-imx/clock-imx25.c b/arch/arm/mach-imx/clock-imx25.c index af1c580b06bc..006b30e4b4e7 100644 --- a/arch/arm/mach-imx/clock-imx25.c +++ b/arch/arm/mach-imx/clock-imx25.c @@ -272,11 +272,12 @@ DEFINE_CLOCK(can2_clk, 1, CCM_CGCR1, 3, get_rate_ipg, NULL, NULL); }, static struct clk_lookup lookups[] = { - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) - _REGISTER_CLOCK("imx-uart.3", NULL, uart4_clk) - _REGISTER_CLOCK("imx-uart.4", NULL, uart5_clk) + /* i.mx25 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK("imx21-uart.3", NULL, uart4_clk) + _REGISTER_CLOCK("imx21-uart.4", NULL, uart5_clk) _REGISTER_CLOCK("mxc-ehci.0", "usb", usbotg_clk) _REGISTER_CLOCK("mxc-ehci.1", "usb", usbotg_clk) _REGISTER_CLOCK("mxc-ehci.2", "usb", usbotg_clk) diff --git a/arch/arm/mach-imx/clock-imx27.c b/arch/arm/mach-imx/clock-imx27.c index 583f2515c1d5..8c9a681ebfc1 100644 --- a/arch/arm/mach-imx/clock-imx27.c +++ b/arch/arm/mach-imx/clock-imx27.c @@ -624,12 +624,13 @@ DEFINE_CLOCK1(csi_clk, 0, NULL, 0, parent, &csi_clk1, &per4_clk); }, static struct clk_lookup lookups[] = { - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) - _REGISTER_CLOCK("imx-uart.3", NULL, uart4_clk) - _REGISTER_CLOCK("imx-uart.4", NULL, uart5_clk) - _REGISTER_CLOCK("imx-uart.5", NULL, uart6_clk) + /* i.mx27 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK("imx21-uart.3", NULL, uart4_clk) + _REGISTER_CLOCK("imx21-uart.4", NULL, uart5_clk) + _REGISTER_CLOCK("imx21-uart.5", NULL, uart6_clk) _REGISTER_CLOCK(NULL, "gpt1", gpt1_clk) _REGISTER_CLOCK(NULL, "gpt2", gpt2_clk) _REGISTER_CLOCK(NULL, "gpt3", gpt3_clk) diff --git a/arch/arm/mach-imx/clock-imx31.c b/arch/arm/mach-imx/clock-imx31.c index 25f343fca2b9..8d212a93ee7f 100644 --- a/arch/arm/mach-imx/clock-imx31.c +++ b/arch/arm/mach-imx/clock-imx31.c @@ -547,11 +547,12 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK("fsl-usb2-udc", "usb", usb_clk1) _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", usb_clk2) _REGISTER_CLOCK("mx3-camera.0", NULL, csi_clk) - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) - _REGISTER_CLOCK("imx-uart.3", NULL, uart4_clk) - _REGISTER_CLOCK("imx-uart.4", NULL, uart5_clk) + /* i.mx31 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK("imx21-uart.3", NULL, uart4_clk) + _REGISTER_CLOCK("imx21-uart.4", NULL, uart5_clk) _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk) _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) _REGISTER_CLOCK("imx-i2c.2", NULL, i2c3_clk) diff --git a/arch/arm/mach-imx/clock-imx35.c b/arch/arm/mach-imx/clock-imx35.c index 5a4cc1ea405b..b44cb065e629 100644 --- a/arch/arm/mach-imx/clock-imx35.c +++ b/arch/arm/mach-imx/clock-imx35.c @@ -486,9 +486,10 @@ static struct clk_lookup lookups[] = { _REGISTER_CLOCK(NULL, "spdif", spdif_clk) _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) + /* i.mx35 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) _REGISTER_CLOCK("mxc-ehci.0", "usb", usbotg_clk) _REGISTER_CLOCK("mxc-ehci.1", "usb", usbotg_clk) _REGISTER_CLOCK("mxc-ehci.2", "usb", usbotg_clk) diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 23cd809fa8b8..b8119e8fb519 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1422,9 +1422,10 @@ DEFINE_CLOCK(ipu_di1_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG6_OFFSET, }, static struct clk_lookup mx51_lookups[] = { - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) + /* i.mx51 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) _REGISTER_CLOCK(NULL, "gpt", gpt_clk) _REGISTER_CLOCK("fec.0", NULL, fec_clk) _REGISTER_CLOCK("mxc_pwm.0", "pwm", pwm1_clk) @@ -1470,11 +1471,12 @@ static struct clk_lookup mx51_lookups[] = { }; static struct clk_lookup mx53_lookups[] = { - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) - _REGISTER_CLOCK("imx-uart.3", NULL, uart4_clk) - _REGISTER_CLOCK("imx-uart.4", NULL, uart5_clk) + /* i.mx53 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK("imx21-uart.3", NULL, uart4_clk) + _REGISTER_CLOCK("imx21-uart.4", NULL, uart5_clk) _REGISTER_CLOCK(NULL, "gpt", gpt_clk) _REGISTER_CLOCK("fec.0", NULL, fec_clk) _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) diff --git a/arch/arm/plat-mxc/devices/platform-imx-uart.c b/arch/arm/plat-mxc/devices/platform-imx-uart.c index cfce8c918b73..2020d84956c3 100644 --- a/arch/arm/plat-mxc/devices/platform-imx-uart.c +++ b/arch/arm/plat-mxc/devices/platform-imx-uart.c @@ -152,7 +152,7 @@ struct platform_device *__init imx_add_imx_uart_3irq( }, }; - return imx_add_platform_device("imx-uart", data->id, res, + return imx_add_platform_device("imx1-uart", data->id, res, ARRAY_SIZE(res), pdata, sizeof(*pdata)); } @@ -172,6 +172,7 @@ struct platform_device *__init imx_add_imx_uart_1irq( }, }; - return imx_add_platform_device("imx-uart", data->id, res, ARRAY_SIZE(res), - pdata, sizeof(*pdata)); + /* i.mx21 type uart runs on all i.mx except i.mx1 */ + return imx_add_platform_device("imx21-uart", data->id, + res, ARRAY_SIZE(res), pdata, sizeof(*pdata)); } diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 22fe801cce31..2d5eac20c5cd 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -48,7 +48,6 @@ #include #include -#include #include /* Register definitions */ @@ -66,8 +65,9 @@ #define UBIR 0xa4 /* BRM Incremental Register */ #define UBMR 0xa8 /* BRM Modulator Register */ #define UBRC 0xac /* Baud Rate Count Register */ -#define MX2_ONEMS 0xb0 /* One Millisecond register */ -#define UTS (cpu_is_mx1() ? 0xd0 : 0xb4) /* UART Test Register */ +#define IMX21_ONEMS 0xb0 /* One Millisecond register */ +#define IMX1_UTS 0xd0 /* UART Test Register on i.mx1 */ +#define IMX21_UTS 0xb4 /* UART Test Register on all other i.mx*/ /* UART Control Register Bit Fields.*/ #define URXD_CHARRDY (1<<15) @@ -87,7 +87,7 @@ #define UCR1_RTSDEN (1<<5) /* RTS delta interrupt enable */ #define UCR1_SNDBRK (1<<4) /* Send break */ #define UCR1_TDMAEN (1<<3) /* Transmitter ready DMA enable */ -#define MX1_UCR1_UARTCLKEN (1<<2) /* UART clock enabled, mx1 only */ +#define IMX1_UCR1_UARTCLKEN (1<<2) /* UART clock enabled, i.mx1 only */ #define UCR1_DOZE (1<<1) /* Doze */ #define UCR1_UARTEN (1<<0) /* UART enabled */ #define UCR2_ESCI (1<<15) /* Escape seq interrupt enable */ @@ -113,9 +113,7 @@ #define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */ #define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */ #define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */ -#define MX1_UCR3_REF25 (1<<3) /* Ref freq 25 MHz, only on mx1 */ -#define MX1_UCR3_REF30 (1<<2) /* Ref Freq 30 MHz, only on mx1 */ -#define MX2_UCR3_RXDMUXSEL (1<<2) /* RXD Muxed Input Select, on mx2/mx3 */ +#define IMX21_UCR3_RXDMUXSEL (1<<2) /* RXD Muxed Input Select */ #define UCR3_INVT (1<<1) /* Inverted Infrared transmission */ #define UCR3_BPEN (1<<0) /* Preset registers enable */ #define UCR4_CTSTL_SHF 10 /* CTS trigger level shift */ @@ -181,6 +179,18 @@ #define UART_NR 8 +/* i.mx21 type uart runs on all i.mx except i.mx1 */ +enum imx_uart_type { + IMX1_UART, + IMX21_UART, +}; + +/* device type dependent stuff */ +struct imx_uart_data { + unsigned uts_reg; + enum imx_uart_type devtype; +}; + struct imx_port { struct uart_port port; struct timer_list timer; @@ -192,6 +202,7 @@ struct imx_port { unsigned int irda_inv_tx:1; unsigned short trcv_delay; /* transceiver delay */ struct clk *clk; + struct imx_uart_data *devdata; }; #ifdef CONFIG_IRDA @@ -200,6 +211,45 @@ struct imx_port { #define USE_IRDA(sport) (0) #endif +static struct imx_uart_data imx_uart_devdata[] = { + [IMX1_UART] = { + .uts_reg = IMX1_UTS, + .devtype = IMX1_UART, + }, + [IMX21_UART] = { + .uts_reg = IMX21_UTS, + .devtype = IMX21_UART, + }, +}; + +static struct platform_device_id imx_uart_devtype[] = { + { + .name = "imx1-uart", + .driver_data = (kernel_ulong_t) &imx_uart_devdata[IMX1_UART], + }, { + .name = "imx21-uart", + .driver_data = (kernel_ulong_t) &imx_uart_devdata[IMX21_UART], + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, imx_uart_devtype); + +static inline unsigned uts_reg(struct imx_port *sport) +{ + return sport->devdata->uts_reg; +} + +static inline int is_imx1_uart(struct imx_port *sport) +{ + return sport->devdata->devtype == IMX1_UART; +} + +static inline int is_imx21_uart(struct imx_port *sport) +{ + return sport->devdata->devtype == IMX21_UART; +} + /* * Handle any change of modem status signal since we were last called. */ @@ -326,7 +376,8 @@ static inline void imx_transmit_buffer(struct imx_port *sport) struct circ_buf *xmit = &sport->port.state->xmit; while (!uart_circ_empty(xmit) && - !(readl(sport->port.membase + UTS) & UTS_TXFULL)) { + !(readl(sport->port.membase + uts_reg(sport)) + & UTS_TXFULL)) { /* send xmit->buf[xmit->tail] * out the port here */ writel(xmit->buf[xmit->tail], sport->port.membase + URTX0); @@ -373,7 +424,7 @@ static void imx_start_tx(struct uart_port *port) writel(temp, sport->port.membase + UCR4); } - if (readl(sport->port.membase + UTS) & UTS_TXEMPTY) + if (readl(sport->port.membase + uts_reg(sport)) & UTS_TXEMPTY) imx_transmit_buffer(sport); } @@ -689,9 +740,9 @@ static int imx_startup(struct uart_port *port) } } - if (!cpu_is_mx1()) { + if (is_imx21_uart(sport)) { temp = readl(sport->port.membase + UCR3); - temp |= MX2_UCR3_RXDMUXSEL; + temp |= IMX21_UCR3_RXDMUXSEL; writel(temp, sport->port.membase + UCR3); } @@ -923,9 +974,9 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, writel(num, sport->port.membase + UBIR); writel(denom, sport->port.membase + UBMR); - if (!cpu_is_mx1()) + if (is_imx21_uart(sport)) writel(sport->port.uartclk / div / 1000, - sport->port.membase + MX2_ONEMS); + sport->port.membase + IMX21_ONEMS); writel(old_ucr1, sport->port.membase + UCR1); @@ -1041,7 +1092,7 @@ static void imx_console_putchar(struct uart_port *port, int ch) { struct imx_port *sport = (struct imx_port *)port; - while (readl(sport->port.membase + UTS) & UTS_TXFULL) + while (readl(sport->port.membase + uts_reg(sport)) & UTS_TXFULL) barrier(); writel(ch, sport->port.membase + URTX0); @@ -1062,8 +1113,8 @@ imx_console_write(struct console *co, const char *s, unsigned int count) ucr1 = old_ucr1 = readl(sport->port.membase + UCR1); old_ucr2 = readl(sport->port.membase + UCR2); - if (cpu_is_mx1()) - ucr1 |= MX1_UCR1_UARTCLKEN; + if (is_imx1_uart(sport)) + ucr1 |= IMX1_UCR1_UARTCLKEN; ucr1 |= UCR1_UARTEN; ucr1 &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN); @@ -1262,6 +1313,7 @@ static int serial_imx_probe(struct platform_device *pdev) init_timer(&sport->timer); sport->timer.function = imx_timeout; sport->timer.data = (unsigned long)sport; + sport->devdata = (struct imx_uart_data *) pdev->id_entry->driver_data; sport->clk = clk_get(&pdev->dev, "uart"); if (IS_ERR(sport->clk)) { @@ -1340,6 +1392,7 @@ static struct platform_driver serial_imx_driver = { .suspend = serial_imx_suspend, .resume = serial_imx_resume, + .id_table = imx_uart_devtype, .driver = { .name = "imx-uart", .owner = THIS_MODULE, -- cgit v1.2.3 From 22698aa252e5e10f5b6d171bf82669deeab3bee1 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Sat, 25 Jun 2011 02:04:34 +0800 Subject: serial/imx: add device tree probe support It adds device tree probe support for imx tty/serial driver. Signed-off-by: Jeremy Kerr Signed-off-by: Jason Liu Signed-off-by: Shawn Guo Cc: Sascha Hauer Cc: Alan Cox Cc: Cc: Greg Kroah-Hartman Cc: Grant Likely Acked-by: Grant Likely --- .../bindings/tty/serial/fsl-imx-uart.txt | 19 +++++ drivers/tty/serial/imx.c | 83 +++++++++++++++++++--- 2 files changed, 91 insertions(+), 11 deletions(-) create mode 100644 Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt (limited to 'drivers/tty/serial/imx.c') diff --git a/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt new file mode 100644 index 000000000000..a9c0406280e8 --- /dev/null +++ b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt @@ -0,0 +1,19 @@ +* Freescale i.MX Universal Asynchronous Receiver/Transmitter (UART) + +Required properties: +- compatible : Should be "fsl,-uart" +- reg : Address and length of the register set for the device +- interrupts : Should contain uart interrupt + +Optional properties: +- fsl,uart-has-rtscts : Indicate the uart has rts and cts +- fsl,irda-mode : Indicate the uart supports irda mode + +Example: + +uart@73fbc000 { + compatible = "fsl,imx51-uart", "fsl,imx21-uart"; + reg = <0x73fbc000 0x4000>; + interrupts = <31>; + fsl,uart-has-rtscts; +}; diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 2d5eac20c5cd..827db7654594 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -45,6 +45,8 @@ #include #include #include +#include +#include #include #include @@ -235,6 +237,13 @@ static struct platform_device_id imx_uart_devtype[] = { }; MODULE_DEVICE_TABLE(platform, imx_uart_devtype); +static struct of_device_id imx_uart_dt_ids[] = { + { .compatible = "fsl,imx1-uart", .data = &imx_uart_devdata[IMX1_UART], }, + { .compatible = "fsl,imx21-uart", .data = &imx_uart_devdata[IMX21_UART], }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_uart_dt_ids); + static inline unsigned uts_reg(struct imx_port *sport) { return sport->devdata->uts_reg; @@ -1273,6 +1282,63 @@ static int serial_imx_resume(struct platform_device *dev) return 0; } +#ifdef CONFIG_OF +static int serial_imx_probe_dt(struct imx_port *sport, + struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + const struct of_device_id *of_id = + of_match_device(imx_uart_dt_ids, &pdev->dev); + int ret; + + if (!np) + return -ENODEV; + + ret = of_alias_get_id(np, "serial"); + if (ret < 0) { + pr_err("%s: failed to get alias id, errno %d\n", + __func__, ret); + return -ENODEV; + } else { + sport->port.line = ret; + } + + if (of_get_property(np, "fsl,uart-has-rtscts", NULL)) + sport->have_rtscts = 1; + + if (of_get_property(np, "fsl,irda-mode", NULL)) + sport->use_irda = 1; + + sport->devdata = of_id->data; + + return 0; +} +#else +static inline int serial_imx_probe_dt(struct imx_port *sport, + struct platform_device *pdev) +{ + return -ENODEV; +} +#endif + +static void serial_imx_probe_pdata(struct imx_port *sport, + struct platform_device *pdev) +{ + struct imxuart_platform_data *pdata = pdev->dev.platform_data; + + sport->port.line = pdev->id; + sport->devdata = (struct imx_uart_data *) pdev->id_entry->driver_data; + + if (!pdata) + return; + + if (pdata->flags & IMXUART_HAVE_RTSCTS) + sport->have_rtscts = 1; + + if (pdata->flags & IMXUART_IRDA) + sport->use_irda = 1; +} + static int serial_imx_probe(struct platform_device *pdev) { struct imx_port *sport; @@ -1285,6 +1351,10 @@ static int serial_imx_probe(struct platform_device *pdev) if (!sport) return -ENOMEM; + ret = serial_imx_probe_dt(sport, pdev); + if (ret == -ENODEV) + serial_imx_probe_pdata(sport, pdev); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { ret = -ENODEV; @@ -1309,11 +1379,9 @@ static int serial_imx_probe(struct platform_device *pdev) sport->port.fifosize = 32; sport->port.ops = &imx_pops; sport->port.flags = UPF_BOOT_AUTOCONF; - sport->port.line = pdev->id; init_timer(&sport->timer); sport->timer.function = imx_timeout; sport->timer.data = (unsigned long)sport; - sport->devdata = (struct imx_uart_data *) pdev->id_entry->driver_data; sport->clk = clk_get(&pdev->dev, "uart"); if (IS_ERR(sport->clk)) { @@ -1324,17 +1392,9 @@ static int serial_imx_probe(struct platform_device *pdev) sport->port.uartclk = clk_get_rate(sport->clk); - imx_ports[pdev->id] = sport; + imx_ports[sport->port.line] = sport; pdata = pdev->dev.platform_data; - if (pdata && (pdata->flags & IMXUART_HAVE_RTSCTS)) - sport->have_rtscts = 1; - -#ifdef CONFIG_IRDA - if (pdata && (pdata->flags & IMXUART_IRDA)) - sport->use_irda = 1; -#endif - if (pdata && pdata->init) { ret = pdata->init(pdev); if (ret) @@ -1396,6 +1456,7 @@ static struct platform_driver serial_imx_driver = { .driver = { .name = "imx-uart", .owner = THIS_MODULE, + .of_match_table = imx_uart_dt_ids, }, }; -- cgit v1.2.3 From 9e191b22c91873c09c722d7f956ab9f3276f9a37 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 4 Aug 2011 10:47:40 +0100 Subject: dt: remove of_alias_get_id() reference of_alias_get_id() is broken and being reverted. Remove the reference to it and replace with a single incrementing id number. There is no risk of regression here on the imx driver since the imx change to use of_alias_get_id() is commit 22698aa2, "serial/imx: add device tree probe support" which is new for v3.1, and it won't get used unless CONFIG_OF is enabled and the board is booted using a device tree. A single incrementing integer is sufficient for now. Signed-off-by: Grant Likely Acked-by: Shawn Guo --- drivers/tty/serial/imx.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) (limited to 'drivers/tty/serial/imx.c') diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 827db7654594..7e91b3d368cd 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1286,22 +1286,17 @@ static int serial_imx_resume(struct platform_device *dev) static int serial_imx_probe_dt(struct imx_port *sport, struct platform_device *pdev) { + static int portnum = 0; struct device_node *np = pdev->dev.of_node; const struct of_device_id *of_id = of_match_device(imx_uart_dt_ids, &pdev->dev); - int ret; if (!np) return -ENODEV; - ret = of_alias_get_id(np, "serial"); - if (ret < 0) { - pr_err("%s: failed to get alias id, errno %d\n", - __func__, ret); - return -ENODEV; - } else { - sport->port.line = ret; - } + sport->port.line = portnum++; + if (sport->port.line >= UART_NR) + return -EINVAL; if (of_get_property(np, "fsl,uart-has-rtscts", NULL)) sport->have_rtscts = 1; -- cgit v1.2.3