diff options
Diffstat (limited to 'drivers/serial/timbuart.c')
-rw-r--r-- | drivers/serial/timbuart.c | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/drivers/serial/timbuart.c b/drivers/serial/timbuart.c index ac9e5d5f742e..063a313b755c 100644 --- a/drivers/serial/timbuart.c +++ b/drivers/serial/timbuart.c | |||
@@ -33,29 +33,29 @@ struct timbuart_port { | |||
33 | struct uart_port port; | 33 | struct uart_port port; |
34 | struct tasklet_struct tasklet; | 34 | struct tasklet_struct tasklet; |
35 | int usedma; | 35 | int usedma; |
36 | u8 last_ier; | 36 | u32 last_ier; |
37 | struct platform_device *dev; | 37 | struct platform_device *dev; |
38 | }; | 38 | }; |
39 | 39 | ||
40 | static int baudrates[] = {9600, 19200, 38400, 57600, 115200, 230400, 460800, | 40 | static int baudrates[] = {9600, 19200, 38400, 57600, 115200, 230400, 460800, |
41 | 921600, 1843200, 3250000}; | 41 | 921600, 1843200, 3250000}; |
42 | 42 | ||
43 | static void timbuart_mctrl_check(struct uart_port *port, u8 isr, u8 *ier); | 43 | static void timbuart_mctrl_check(struct uart_port *port, u32 isr, u32 *ier); |
44 | 44 | ||
45 | static irqreturn_t timbuart_handleinterrupt(int irq, void *devid); | 45 | static irqreturn_t timbuart_handleinterrupt(int irq, void *devid); |
46 | 46 | ||
47 | static void timbuart_stop_rx(struct uart_port *port) | 47 | static void timbuart_stop_rx(struct uart_port *port) |
48 | { | 48 | { |
49 | /* spin lock held by upper layer, disable all RX interrupts */ | 49 | /* spin lock held by upper layer, disable all RX interrupts */ |
50 | u8 ier = ioread8(port->membase + TIMBUART_IER) & ~RXFLAGS; | 50 | u32 ier = ioread32(port->membase + TIMBUART_IER) & ~RXFLAGS; |
51 | iowrite8(ier, port->membase + TIMBUART_IER); | 51 | iowrite32(ier, port->membase + TIMBUART_IER); |
52 | } | 52 | } |
53 | 53 | ||
54 | static void timbuart_stop_tx(struct uart_port *port) | 54 | static void timbuart_stop_tx(struct uart_port *port) |
55 | { | 55 | { |
56 | /* spinlock held by upper layer, disable TX interrupt */ | 56 | /* spinlock held by upper layer, disable TX interrupt */ |
57 | u8 ier = ioread8(port->membase + TIMBUART_IER) & ~TXBAE; | 57 | u32 ier = ioread32(port->membase + TIMBUART_IER) & ~TXBAE; |
58 | iowrite8(ier, port->membase + TIMBUART_IER); | 58 | iowrite32(ier, port->membase + TIMBUART_IER); |
59 | } | 59 | } |
60 | 60 | ||
61 | static void timbuart_start_tx(struct uart_port *port) | 61 | static void timbuart_start_tx(struct uart_port *port) |
@@ -72,14 +72,14 @@ static void timbuart_flush_buffer(struct uart_port *port) | |||
72 | u8 ctl = ioread8(port->membase + TIMBUART_CTRL) | TIMBUART_CTRL_FLSHTX; | 72 | u8 ctl = ioread8(port->membase + TIMBUART_CTRL) | TIMBUART_CTRL_FLSHTX; |
73 | 73 | ||
74 | iowrite8(ctl, port->membase + TIMBUART_CTRL); | 74 | iowrite8(ctl, port->membase + TIMBUART_CTRL); |
75 | iowrite8(TXBF, port->membase + TIMBUART_ISR); | 75 | iowrite32(TXBF, port->membase + TIMBUART_ISR); |
76 | } | 76 | } |
77 | 77 | ||
78 | static void timbuart_rx_chars(struct uart_port *port) | 78 | static void timbuart_rx_chars(struct uart_port *port) |
79 | { | 79 | { |
80 | struct tty_struct *tty = port->info->port.tty; | 80 | struct tty_struct *tty = port->info->port.tty; |
81 | 81 | ||
82 | while (ioread8(port->membase + TIMBUART_ISR) & RXDP) { | 82 | while (ioread32(port->membase + TIMBUART_ISR) & RXDP) { |
83 | u8 ch = ioread8(port->membase + TIMBUART_RXFIFO); | 83 | u8 ch = ioread8(port->membase + TIMBUART_RXFIFO); |
84 | port->icount.rx++; | 84 | port->icount.rx++; |
85 | tty_insert_flip_char(tty, ch, TTY_NORMAL); | 85 | tty_insert_flip_char(tty, ch, TTY_NORMAL); |
@@ -97,7 +97,7 @@ static void timbuart_tx_chars(struct uart_port *port) | |||
97 | { | 97 | { |
98 | struct circ_buf *xmit = &port->info->xmit; | 98 | struct circ_buf *xmit = &port->info->xmit; |
99 | 99 | ||
100 | while (!(ioread8(port->membase + TIMBUART_ISR) & TXBF) && | 100 | while (!(ioread32(port->membase + TIMBUART_ISR) & TXBF) && |
101 | !uart_circ_empty(xmit)) { | 101 | !uart_circ_empty(xmit)) { |
102 | iowrite8(xmit->buf[xmit->tail], | 102 | iowrite8(xmit->buf[xmit->tail], |
103 | port->membase + TIMBUART_TXFIFO); | 103 | port->membase + TIMBUART_TXFIFO); |
@@ -114,7 +114,7 @@ static void timbuart_tx_chars(struct uart_port *port) | |||
114 | ioread8(port->membase + TIMBUART_BAUDRATE)); | 114 | ioread8(port->membase + TIMBUART_BAUDRATE)); |
115 | } | 115 | } |
116 | 116 | ||
117 | static void timbuart_handle_tx_port(struct uart_port *port, u8 isr, u8 *ier) | 117 | static void timbuart_handle_tx_port(struct uart_port *port, u32 isr, u32 *ier) |
118 | { | 118 | { |
119 | struct timbuart_port *uart = | 119 | struct timbuart_port *uart = |
120 | container_of(port, struct timbuart_port, port); | 120 | container_of(port, struct timbuart_port, port); |
@@ -129,7 +129,7 @@ static void timbuart_handle_tx_port(struct uart_port *port, u8 isr, u8 *ier) | |||
129 | if (isr & TXFLAGS) { | 129 | if (isr & TXFLAGS) { |
130 | timbuart_tx_chars(port); | 130 | timbuart_tx_chars(port); |
131 | /* clear all TX interrupts */ | 131 | /* clear all TX interrupts */ |
132 | iowrite8(TXFLAGS, port->membase + TIMBUART_ISR); | 132 | iowrite32(TXFLAGS, port->membase + TIMBUART_ISR); |
133 | 133 | ||
134 | if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) | 134 | if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) |
135 | uart_write_wakeup(port); | 135 | uart_write_wakeup(port); |
@@ -148,7 +148,7 @@ static void timbuart_handle_tx_port(struct uart_port *port, u8 isr, u8 *ier) | |||
148 | dev_dbg(port->dev, "%s - leaving\n", __func__); | 148 | dev_dbg(port->dev, "%s - leaving\n", __func__); |
149 | } | 149 | } |
150 | 150 | ||
151 | void timbuart_handle_rx_port(struct uart_port *port, u8 isr, u8 *ier) | 151 | void timbuart_handle_rx_port(struct uart_port *port, u32 isr, u32 *ier) |
152 | { | 152 | { |
153 | if (isr & RXFLAGS) { | 153 | if (isr & RXFLAGS) { |
154 | /* Some RX status is set */ | 154 | /* Some RX status is set */ |
@@ -161,7 +161,7 @@ void timbuart_handle_rx_port(struct uart_port *port, u8 isr, u8 *ier) | |||
161 | timbuart_rx_chars(port); | 161 | timbuart_rx_chars(port); |
162 | 162 | ||
163 | /* ack all RX interrupts */ | 163 | /* ack all RX interrupts */ |
164 | iowrite8(RXFLAGS, port->membase + TIMBUART_ISR); | 164 | iowrite32(RXFLAGS, port->membase + TIMBUART_ISR); |
165 | } | 165 | } |
166 | 166 | ||
167 | /* always have the RX interrupts enabled */ | 167 | /* always have the RX interrupts enabled */ |
@@ -173,11 +173,11 @@ void timbuart_handle_rx_port(struct uart_port *port, u8 isr, u8 *ier) | |||
173 | void timbuart_tasklet(unsigned long arg) | 173 | void timbuart_tasklet(unsigned long arg) |
174 | { | 174 | { |
175 | struct timbuart_port *uart = (struct timbuart_port *)arg; | 175 | struct timbuart_port *uart = (struct timbuart_port *)arg; |
176 | u8 isr, ier = 0; | 176 | u32 isr, ier = 0; |
177 | 177 | ||
178 | spin_lock(&uart->port.lock); | 178 | spin_lock(&uart->port.lock); |
179 | 179 | ||
180 | isr = ioread8(uart->port.membase + TIMBUART_ISR); | 180 | isr = ioread32(uart->port.membase + TIMBUART_ISR); |
181 | dev_dbg(uart->port.dev, "%s ISR: %x\n", __func__, isr); | 181 | dev_dbg(uart->port.dev, "%s ISR: %x\n", __func__, isr); |
182 | 182 | ||
183 | if (!uart->usedma) | 183 | if (!uart->usedma) |
@@ -188,7 +188,7 @@ void timbuart_tasklet(unsigned long arg) | |||
188 | if (!uart->usedma) | 188 | if (!uart->usedma) |
189 | timbuart_handle_rx_port(&uart->port, isr, &ier); | 189 | timbuart_handle_rx_port(&uart->port, isr, &ier); |
190 | 190 | ||
191 | iowrite8(ier, uart->port.membase + TIMBUART_IER); | 191 | iowrite32(ier, uart->port.membase + TIMBUART_IER); |
192 | 192 | ||
193 | spin_unlock(&uart->port.lock); | 193 | spin_unlock(&uart->port.lock); |
194 | dev_dbg(uart->port.dev, "%s leaving\n", __func__); | 194 | dev_dbg(uart->port.dev, "%s leaving\n", __func__); |
@@ -196,9 +196,9 @@ void timbuart_tasklet(unsigned long arg) | |||
196 | 196 | ||
197 | static unsigned int timbuart_tx_empty(struct uart_port *port) | 197 | static unsigned int timbuart_tx_empty(struct uart_port *port) |
198 | { | 198 | { |
199 | u8 isr = ioread8(port->membase + TIMBUART_ISR); | 199 | u32 isr = ioread32(port->membase + TIMBUART_ISR); |
200 | 200 | ||
201 | return (isr & TXBAE) ? TIOCSER_TEMT : 0; | 201 | return (isr & TXBE) ? TIOCSER_TEMT : 0; |
202 | } | 202 | } |
203 | 203 | ||
204 | static unsigned int timbuart_get_mctrl(struct uart_port *port) | 204 | static unsigned int timbuart_get_mctrl(struct uart_port *port) |
@@ -222,13 +222,13 @@ static void timbuart_set_mctrl(struct uart_port *port, unsigned int mctrl) | |||
222 | iowrite8(TIMBUART_CTRL_RTS, port->membase + TIMBUART_CTRL); | 222 | iowrite8(TIMBUART_CTRL_RTS, port->membase + TIMBUART_CTRL); |
223 | } | 223 | } |
224 | 224 | ||
225 | static void timbuart_mctrl_check(struct uart_port *port, u8 isr, u8 *ier) | 225 | static void timbuart_mctrl_check(struct uart_port *port, u32 isr, u32 *ier) |
226 | { | 226 | { |
227 | unsigned int cts; | 227 | unsigned int cts; |
228 | 228 | ||
229 | if (isr & CTS_DELTA) { | 229 | if (isr & CTS_DELTA) { |
230 | /* ack */ | 230 | /* ack */ |
231 | iowrite8(CTS_DELTA, port->membase + TIMBUART_ISR); | 231 | iowrite32(CTS_DELTA, port->membase + TIMBUART_ISR); |
232 | cts = timbuart_get_mctrl(port); | 232 | cts = timbuart_get_mctrl(port); |
233 | uart_handle_cts_change(port, cts & TIOCM_CTS); | 233 | uart_handle_cts_change(port, cts & TIOCM_CTS); |
234 | wake_up_interruptible(&port->info->delta_msr_wait); | 234 | wake_up_interruptible(&port->info->delta_msr_wait); |
@@ -255,9 +255,9 @@ static int timbuart_startup(struct uart_port *port) | |||
255 | dev_dbg(port->dev, "%s\n", __func__); | 255 | dev_dbg(port->dev, "%s\n", __func__); |
256 | 256 | ||
257 | iowrite8(TIMBUART_CTRL_FLSHRX, port->membase + TIMBUART_CTRL); | 257 | iowrite8(TIMBUART_CTRL_FLSHRX, port->membase + TIMBUART_CTRL); |
258 | iowrite8(0xff, port->membase + TIMBUART_ISR); | 258 | iowrite32(0x1ff, port->membase + TIMBUART_ISR); |
259 | /* Enable all but TX interrupts */ | 259 | /* Enable all but TX interrupts */ |
260 | iowrite8(RXBAF | RXBF | RXTT | CTS_DELTA, | 260 | iowrite32(RXBAF | RXBF | RXTT | CTS_DELTA, |
261 | port->membase + TIMBUART_IER); | 261 | port->membase + TIMBUART_IER); |
262 | 262 | ||
263 | return request_irq(port->irq, timbuart_handleinterrupt, IRQF_SHARED, | 263 | return request_irq(port->irq, timbuart_handleinterrupt, IRQF_SHARED, |
@@ -270,7 +270,7 @@ static void timbuart_shutdown(struct uart_port *port) | |||
270 | container_of(port, struct timbuart_port, port); | 270 | container_of(port, struct timbuart_port, port); |
271 | dev_dbg(port->dev, "%s\n", __func__); | 271 | dev_dbg(port->dev, "%s\n", __func__); |
272 | free_irq(port->irq, uart); | 272 | free_irq(port->irq, uart); |
273 | iowrite8(0, port->membase + TIMBUART_IER); | 273 | iowrite32(0, port->membase + TIMBUART_IER); |
274 | } | 274 | } |
275 | 275 | ||
276 | static int get_bindex(int baud) | 276 | static int get_bindex(int baud) |
@@ -359,10 +359,10 @@ static irqreturn_t timbuart_handleinterrupt(int irq, void *devid) | |||
359 | struct timbuart_port *uart = (struct timbuart_port *)devid; | 359 | struct timbuart_port *uart = (struct timbuart_port *)devid; |
360 | 360 | ||
361 | if (ioread8(uart->port.membase + TIMBUART_IPR)) { | 361 | if (ioread8(uart->port.membase + TIMBUART_IPR)) { |
362 | uart->last_ier = ioread8(uart->port.membase + TIMBUART_IER); | 362 | uart->last_ier = ioread32(uart->port.membase + TIMBUART_IER); |
363 | 363 | ||
364 | /* disable interrupts, the tasklet enables them again */ | 364 | /* disable interrupts, the tasklet enables them again */ |
365 | iowrite8(0, uart->port.membase + TIMBUART_IER); | 365 | iowrite32(0, uart->port.membase + TIMBUART_IER); |
366 | 366 | ||
367 | /* fire off bottom half */ | 367 | /* fire off bottom half */ |
368 | tasklet_schedule(&uart->tasklet); | 368 | tasklet_schedule(&uart->tasklet); |