From d8ee4ea68ff9c0f13646070aeada668a4eae9189 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 6 Sep 2012 15:45:20 +0300 Subject: [PATCH] serial: omap: don't access the platform_device The driver doesn't need to know about its platform_device. Everything the driver needs can be done through the struct device pointer. In case we need to use the OMAP-specific PM function pointers, those can make sure to find the device's platform_device pointer so they can find the struct omap_device through pdev->archdata field. Tested-by: Shubhrajyoti D Acked-by: Santosh Shilimkar Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-omap2/serial.c | 15 ++- arch/arm/plat-omap/include/plat/omap-serial.h | 10 +- drivers/tty/serial/omap-serial.c | 124 +++++++++--------- 3 files changed, 76 insertions(+), 73 deletions(-) diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 25d53b2800c..9e80d209d13 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -81,8 +81,9 @@ static struct omap_uart_port_info omap_serial_default_info[] __initdata = { }; #ifdef CONFIG_PM -static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable) +static void omap_uart_enable_wakeup(struct device *dev, bool enable) { + struct platform_device *pdev = to_platform_device(dev); struct omap_device *od = to_omap_device(pdev); if (!od) @@ -99,15 +100,17 @@ static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable) * in Smartidle Mode When Configured for DMA Operations. * WA: configure uart in force idle mode. */ -static void omap_uart_set_noidle(struct platform_device *pdev) +static void omap_uart_set_noidle(struct device *dev) { + struct platform_device *pdev = to_platform_device(dev); struct omap_device *od = to_omap_device(pdev); omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_NO); } -static void omap_uart_set_smartidle(struct platform_device *pdev) +static void omap_uart_set_smartidle(struct device *dev) { + struct platform_device *pdev = to_platform_device(dev); struct omap_device *od = to_omap_device(pdev); u8 idlemode; @@ -120,10 +123,10 @@ static void omap_uart_set_smartidle(struct platform_device *pdev) } #else -static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable) +static void omap_uart_enable_wakeup(struct device *dev, bool enable) {} -static void omap_uart_set_noidle(struct platform_device *pdev) {} -static void omap_uart_set_smartidle(struct platform_device *pdev) {} +static void omap_uart_set_noidle(struct device *dev) {} +static void omap_uart_set_smartidle(struct device *dev) {} #endif /* CONFIG_PM */ #ifdef CONFIG_OMAP_MUX diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h index 5cc06262071..90d2d74d168 100644 --- a/arch/arm/plat-omap/include/plat/omap-serial.h +++ b/arch/arm/plat-omap/include/plat/omap-serial.h @@ -18,7 +18,7 @@ #define __OMAP_SERIAL_H__ #include -#include +#include #include #include @@ -74,9 +74,9 @@ struct omap_uart_port_info { int DTR_present; int (*get_context_loss_count)(struct device *); - void (*set_forceidle)(struct platform_device *); - void (*set_noidle)(struct platform_device *); - void (*enable_wakeup)(struct platform_device *, bool); + void (*set_forceidle)(struct device *); + void (*set_noidle)(struct device *); + void (*enable_wakeup)(struct device *, bool); }; struct uart_omap_dma { @@ -108,7 +108,7 @@ struct uart_omap_dma { struct uart_omap_port { struct uart_port port; struct uart_omap_dma uart_dma; - struct platform_device *pdev; + struct device *dev; unsigned char ier; unsigned char lcr; diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 3a60b86ab0f..5af5d228f7d 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -104,36 +104,36 @@ static inline void serial_omap_clear_fifos(struct uart_omap_port *up) static int serial_omap_get_context_loss_count(struct uart_omap_port *up) { - struct omap_uart_port_info *pdata = up->pdev->dev.platform_data; + struct omap_uart_port_info *pdata = up->dev->platform_data; if (!pdata->get_context_loss_count) return 0; - return pdata->get_context_loss_count(&up->pdev->dev); + return pdata->get_context_loss_count(up->dev); } static void serial_omap_set_forceidle(struct uart_omap_port *up) { - struct omap_uart_port_info *pdata = up->pdev->dev.platform_data; + struct omap_uart_port_info *pdata = up->dev->platform_data; if (pdata->set_forceidle) - pdata->set_forceidle(up->pdev); + pdata->set_forceidle(up->dev); } static void serial_omap_set_noidle(struct uart_omap_port *up) { - struct omap_uart_port_info *pdata = up->pdev->dev.platform_data; + struct omap_uart_port_info *pdata = up->dev->platform_data; if (pdata->set_noidle) - pdata->set_noidle(up->pdev); + pdata->set_noidle(up->dev); } static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable) { - struct omap_uart_port_info *pdata = up->pdev->dev.platform_data; + struct omap_uart_port_info *pdata = up->dev->platform_data; if (pdata->enable_wakeup) - pdata->enable_wakeup(up->pdev, enable); + pdata->enable_wakeup(up->dev, enable); } /* @@ -169,8 +169,8 @@ static void serial_omap_stop_rxdma(struct uart_omap_port *up) omap_free_dma(up->uart_dma.rx_dma_channel); up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE; up->uart_dma.rx_dma_used = false; - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } } @@ -180,16 +180,16 @@ static void serial_omap_enable_ms(struct uart_port *port) dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); up->ier |= UART_IER_MSI; serial_out(up, UART_IER, up->ier); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); } static void serial_omap_stop_tx(struct uart_port *port) { struct uart_omap_port *up = to_uart_omap_port(port); - struct omap_uart_port_info *pdata = up->pdev->dev.platform_data; + struct omap_uart_port_info *pdata = up->dev->platform_data; if (up->use_dma && up->uart_dma.tx_dma_channel != OMAP_UART_DMA_CH_FREE) { @@ -202,11 +202,11 @@ static void serial_omap_stop_tx(struct uart_port *port) omap_stop_dma(up->uart_dma.tx_dma_channel); omap_free_dma(up->uart_dma.tx_dma_channel); up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE; - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); if (up->ier & UART_IER_THRI) { up->ier &= ~UART_IER_THRI; serial_out(up, UART_IER, up->ier); @@ -215,22 +215,22 @@ static void serial_omap_stop_tx(struct uart_port *port) if (!up->use_dma && pdata) serial_omap_set_forceidle(up); - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static void serial_omap_stop_rx(struct uart_port *port) { struct uart_omap_port *up = to_uart_omap_port(port); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); if (up->use_dma) serial_omap_stop_rxdma(up); up->ier &= ~UART_IER_RLSI; up->port.read_status_mask &= ~UART_LSR_DR; serial_out(up, UART_IER, up->ier); - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); } static inline void receive_chars(struct uart_omap_port *up, @@ -348,11 +348,11 @@ static void serial_omap_start_tx(struct uart_port *port) int ret = 0; if (!up->use_dma) { - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); serial_omap_enable_ier_thri(up); serial_omap_set_noidle(up); - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); return; } @@ -362,7 +362,7 @@ static void serial_omap_start_tx(struct uart_port *port) xmit = &up->port.state->xmit; if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) { - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); ret = omap_request_dma(up->uart_dma.uart_dma_tx, "UART Tx DMA", (void *)uart_tx_dma_callback, up, @@ -445,11 +445,11 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id) unsigned int iir, lsr; unsigned long flags; - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); iir = serial_in(up, UART_IIR); if (iir & UART_IIR_NO_INT) { - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); return IRQ_NONE; } @@ -473,8 +473,8 @@ static inline irqreturn_t serial_omap_irq(int irq, void *dev_id) transmit_chars(up); spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); up->port_activity = jiffies; return IRQ_HANDLED; @@ -486,12 +486,12 @@ static unsigned int serial_omap_tx_empty(struct uart_port *port) unsigned long flags = 0; unsigned int ret = 0; - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line); spin_lock_irqsave(&up->port.lock, flags); ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); return ret; } @@ -501,9 +501,9 @@ static unsigned int serial_omap_get_mctrl(struct uart_port *port) unsigned int status; unsigned int ret = 0; - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); status = check_modem_status(up); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line); @@ -535,11 +535,11 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl) if (mctrl & TIOCM_LOOP) mcr |= UART_MCR_LOOP; - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); up->mcr = serial_in(up, UART_MCR); up->mcr |= mcr; serial_out(up, UART_MCR, up->mcr); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); if (gpio_is_valid(up->DTR_gpio) && !!(mctrl & TIOCM_DTR) != up->DTR_active) { @@ -558,7 +558,7 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state) unsigned long flags = 0; dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); spin_lock_irqsave(&up->port.lock, flags); if (break_state == -1) up->lcr |= UART_LCR_SBC; @@ -566,7 +566,7 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state) up->lcr &= ~UART_LCR_SBC; serial_out(up, UART_LCR, up->lcr); spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); } static int serial_omap_startup(struct uart_port *port) @@ -585,7 +585,7 @@ static int serial_omap_startup(struct uart_port *port) dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); /* * Clear the FIFO buffers and disable them. * (they will be reenabled in set_termios()) @@ -641,8 +641,8 @@ static int serial_omap_startup(struct uart_port *port) /* Enable module level wake up */ serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP); - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); up->port_activity = jiffies; return 0; } @@ -654,7 +654,7 @@ static void serial_omap_shutdown(struct uart_port *port) dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); /* * Disable interrupts from this port */ @@ -689,7 +689,7 @@ static void serial_omap_shutdown(struct uart_port *port) up->uart_dma.rx_buf = NULL; } - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); free_irq(up->port.irq, up); } @@ -821,7 +821,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, * Ok, we're now changing the port state. Do it with * interrupts disabled. */ - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); spin_lock_irqsave(&up->port.lock, flags); /* @@ -970,7 +970,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_omap_configure_xonxoff(up, termios); spin_unlock_irqrestore(&up->port.lock, flags); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line); } @@ -983,7 +983,7 @@ serial_omap_pm(struct uart_port *port, unsigned int state, dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); efr = serial_in(up, UART_EFR); serial_out(up, UART_EFR, efr | UART_EFR_ECB); @@ -994,14 +994,14 @@ serial_omap_pm(struct uart_port *port, unsigned int state, serial_out(up, UART_EFR, efr); serial_out(up, UART_LCR, 0); - if (!device_may_wakeup(&up->pdev->dev)) { + if (!device_may_wakeup(up->dev)) { if (!state) - pm_runtime_forbid(&up->pdev->dev); + pm_runtime_forbid(up->dev); else - pm_runtime_allow(&up->pdev->dev); + pm_runtime_allow(up->dev); } - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); } static void serial_omap_release_port(struct uart_port *port) @@ -1080,10 +1080,10 @@ static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch) { struct uart_omap_port *up = to_uart_omap_port(port); - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); wait_for_xmitr(up); serial_out(up, UART_TX, ch); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); } static int serial_omap_poll_get_char(struct uart_port *port) @@ -1091,13 +1091,13 @@ static int serial_omap_poll_get_char(struct uart_port *port) struct uart_omap_port *up = to_uart_omap_port(port); unsigned int status; - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); status = serial_in(up, UART_LSR); if (!(status & UART_LSR_DR)) return NO_POLL_CHAR; status = serial_in(up, UART_RX); - pm_runtime_put(&up->pdev->dev); + pm_runtime_put(up->dev); return status; } @@ -1126,7 +1126,7 @@ serial_omap_console_write(struct console *co, const char *s, unsigned int ier; int locked = 1; - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); local_irq_save(flags); if (up->port.sysrq) @@ -1160,8 +1160,8 @@ serial_omap_console_write(struct console *co, const char *s, if (up->msr_saved_flags) check_modem_status(up); - pm_runtime_mark_last_busy(&up->pdev->dev); - pm_runtime_put_autosuspend(&up->pdev->dev); + pm_runtime_mark_last_busy(up->dev); + pm_runtime_put_autosuspend(up->dev); if (locked) spin_unlock(&up->port.lock); local_irq_restore(flags); @@ -1323,7 +1323,7 @@ static int serial_omap_start_rxdma(struct uart_omap_port *up) int ret = 0; if (up->uart_dma.rx_dma_channel == -1) { - pm_runtime_get_sync(&up->pdev->dev); + pm_runtime_get_sync(up->dev); ret = omap_request_dma(up->uart_dma.uart_dma_rx, "UART Rx DMA", (void *)uart_rx_dma_callback, up, @@ -1435,7 +1435,7 @@ static void omap_serial_fill_features_erratas(struct uart_omap_port *up) minor = (mvr & OMAP_UART_MVR_MIN_MASK); break; default: - dev_warn(&up->pdev->dev, + dev_warn(up->dev, "Unknown %s revision, defaulting to highest\n", up->name); /* highest possible revision */ @@ -1535,7 +1535,7 @@ static int serial_omap_probe(struct platform_device *pdev) up->DTR_gpio = -EINVAL; up->DTR_active = 0; - up->pdev = pdev; + up->dev = &pdev->dev; up->port.dev = &pdev->dev; up->port.type = PORT_OMAP; up->port.iotype = UPIO_MEM; @@ -1632,7 +1632,7 @@ static int serial_omap_remove(struct platform_device *dev) struct uart_omap_port *up = platform_get_drvdata(dev); if (up) { - pm_runtime_disable(&up->pdev->dev); + pm_runtime_disable(up->dev); uart_remove_one_port(&serial_omap_reg, &up->port); pm_qos_remove_request(&up->pm_qos_request); } @@ -1667,7 +1667,7 @@ static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1) timeout--; if (!timeout) { /* Should *never* happen. we warn and carry on */ - dev_crit(&up->pdev->dev, "Errata i202: timedout %x\n", + dev_crit(up->dev, "Errata i202: timedout %x\n", serial_in(up, UART_LSR)); break; } -- 2.41.0