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serial/imx: get rid of the uses of cpu_is_mx1()

Browse source 
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 <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Shawn Guo 2011-06-25 02:04:33 +08:00
parent b0189cd087
commit fe6b540ac0
9 changed files with 113 additions and 53 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
arch/arm/mach-imx/clock-imx1.c
View file

@ -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)

8
arch/arm/mach-imx/clock-imx21.c
View file

@ -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])

11
arch/arm/mach-imx/clock-imx25.c
View file

@ -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)

13
arch/arm/mach-imx/clock-imx27.c
View file

@ -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)

11
arch/arm/mach-imx/clock-imx31.c
View file

@ -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)

7
arch/arm/mach-imx/clock-imx35.c
View file

@ -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)

18
arch/arm/mach-mx5/clock-mx51-mx53.c
View file

@ -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)

7
arch/arm/plat-mxc/devices/platform-imx-uart.c
View file

@ -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));
}

85
drivers/tty/serial/imx.c
View file

@ -48,7 +48,6 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <mach/imx-uart.h>
/* 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,