diff options
Diffstat (limited to 'drivers/net/irda')
-rw-r--r-- | drivers/net/irda/sh_irda.c | 124 |
1 files changed, 70 insertions, 54 deletions
diff --git a/drivers/net/irda/sh_irda.c b/drivers/net/irda/sh_irda.c index 82660672dcd9..d275e276e742 100644 --- a/drivers/net/irda/sh_irda.c +++ b/drivers/net/irda/sh_irda.c @@ -2,7 +2,7 @@ * SuperH IrDA Driver * * Copyright (C) 2010 Renesas Solutions Corp. - * Kuninori Morimoto <morimoto.kuninori@renesas.com> + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> * * Based on sh_sir.c * Copyright (C) 2009 Renesas Solutions Corp. @@ -26,6 +26,7 @@ #include <linux/interrupt.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/clk.h> #include <net/irda/wrapper.h> #include <net/irda/irda_device.h> @@ -144,8 +145,8 @@ struct sh_irda_xir_func { struct sh_irda_self { void __iomem *membase; - unsigned int irq; - struct clk *clk; + unsigned int irq; + struct platform_device *pdev; struct net_device *ndev; @@ -264,7 +265,7 @@ static int sh_irda_set_baudrate(struct sh_irda_self *self, int baudrate) return 0; } -static int xir_get_rcv_length(struct sh_irda_self *self) +static int sh_irda_get_rcv_length(struct sh_irda_self *self) { return RFL_MASK & sh_irda_read(self, IRRFLR); } @@ -274,47 +275,47 @@ static int xir_get_rcv_length(struct sh_irda_self *self) * NONE MODE * *=====================================*/ -static int xir_fre(struct sh_irda_self *self) +static int sh_irda_xir_fre(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; dev_err(dev, "none mode: frame recv\n"); return 0; } -static int xir_trov(struct sh_irda_self *self) +static int sh_irda_xir_trov(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; dev_err(dev, "none mode: buffer ram over\n"); return 0; } -static int xir_9(struct sh_irda_self *self) +static int sh_irda_xir_9(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; dev_err(dev, "none mode: time over\n"); return 0; } -static int xir_8(struct sh_irda_self *self) +static int sh_irda_xir_8(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; dev_err(dev, "none mode: framing error\n"); return 0; } -static int xir_fte(struct sh_irda_self *self) +static int sh_irda_xir_fte(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; dev_err(dev, "none mode: frame transmit end\n"); return 0; } -static struct sh_irda_xir_func xir_func = { - .xir_fre = xir_fre, - .xir_trov = xir_trov, - .xir_9 = xir_9, - .xir_8 = xir_8, - .xir_fte = xir_fte, +static struct sh_irda_xir_func sh_irda_xir_func = { + .xir_fre = sh_irda_xir_fre, + .xir_trov = sh_irda_xir_trov, + .xir_9 = sh_irda_xir_9, + .xir_8 = sh_irda_xir_8, + .xir_fte = sh_irda_xir_fte, }; /*===================================== @@ -323,12 +324,12 @@ static struct sh_irda_xir_func xir_func = { * * MIR/FIR are not supported now *=====================================*/ -static struct sh_irda_xir_func mfir_func = { - .xir_fre = xir_fre, - .xir_trov = xir_trov, - .xir_9 = xir_9, - .xir_8 = xir_8, - .xir_fte = xir_fte, +static struct sh_irda_xir_func sh_irda_mfir_func = { + .xir_fre = sh_irda_xir_fre, + .xir_trov = sh_irda_xir_trov, + .xir_9 = sh_irda_xir_9, + .xir_8 = sh_irda_xir_8, + .xir_fte = sh_irda_xir_fte, }; /*===================================== @@ -336,12 +337,12 @@ static struct sh_irda_xir_func mfir_func = { * SIR MODE * *=====================================*/ -static int sir_fre(struct sh_irda_self *self) +static int sh_irda_sir_fre(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; u16 data16; u8 *data = (u8 *)&data16; - int len = xir_get_rcv_length(self); + int len = sh_irda_get_rcv_length(self); int i, j; if (len > IRDARAM_LEN) @@ -364,7 +365,7 @@ static int sir_fre(struct sh_irda_self *self) return 0; } -static int sir_trov(struct sh_irda_self *self) +static int sh_irda_sir_trov(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; @@ -373,7 +374,7 @@ static int sir_trov(struct sh_irda_self *self) return 0; } -static int sir_tot(struct sh_irda_self *self) +static int sh_irda_sir_tot(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; @@ -383,7 +384,7 @@ static int sir_tot(struct sh_irda_self *self) return 0; } -static int sir_fer(struct sh_irda_self *self) +static int sh_irda_sir_fer(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; @@ -392,7 +393,7 @@ static int sir_fer(struct sh_irda_self *self) return 0; } -static int sir_fte(struct sh_irda_self *self) +static int sh_irda_sir_fte(struct sh_irda_self *self) { struct device *dev = &self->ndev->dev; @@ -402,12 +403,12 @@ static int sir_fte(struct sh_irda_self *self) return 0; } -static struct sh_irda_xir_func sir_func = { - .xir_fre = sir_fre, - .xir_trov = sir_trov, - .xir_9 = sir_tot, - .xir_8 = sir_fer, - .xir_fte = sir_fte, +static struct sh_irda_xir_func sh_irda_sir_func = { + .xir_fre = sh_irda_sir_fre, + .xir_trov = sh_irda_sir_trov, + .xir_9 = sh_irda_sir_tot, + .xir_8 = sh_irda_sir_fer, + .xir_fte = sh_irda_sir_fte, }; static void sh_irda_set_mode(struct sh_irda_self *self, enum sh_irda_mode mode) @@ -421,22 +422,22 @@ static void sh_irda_set_mode(struct sh_irda_self *self, enum sh_irda_mode mode) case SH_IRDA_SIR: name = "SIR"; data = TMD_SIR; - func = &sir_func; + func = &sh_irda_sir_func; break; case SH_IRDA_MIR: name = "MIR"; data = TMD_MIR; - func = &mfir_func; + func = &sh_irda_mfir_func; break; case SH_IRDA_FIR: name = "FIR"; data = TMD_FIR; - func = &mfir_func; + func = &sh_irda_mfir_func; break; default: - name = "NONE"; - data = 0; - func = &xir_func; + name = "NONE"; + data = 0; + func = &sh_irda_xir_func; break; } @@ -694,7 +695,7 @@ static int sh_irda_open(struct net_device *ndev) struct sh_irda_self *self = netdev_priv(ndev); int err; - clk_enable(self->clk); + pm_runtime_get_sync(&self->pdev->dev); err = sh_irda_crc_init(self); if (err) goto open_err; @@ -718,7 +719,7 @@ static int sh_irda_open(struct net_device *ndev) return 0; open_err: - clk_disable(self->clk); + pm_runtime_put_sync(&self->pdev->dev); return err; } @@ -734,6 +735,7 @@ static int sh_irda_stop(struct net_device *ndev) } netif_stop_queue(ndev); + pm_runtime_put_sync(&self->pdev->dev); dev_info(&ndev->dev, "stoped\n"); @@ -786,11 +788,8 @@ static int __devinit sh_irda_probe(struct platform_device *pdev) if (err) goto err_mem_2; - self->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(self->clk)) { - dev_err(&pdev->dev, "cannot get irda clock\n"); - goto err_mem_3; - } + self->pdev = pdev; + pm_runtime_enable(&pdev->dev); irda_init_max_qos_capabilies(&self->qos); @@ -820,8 +819,7 @@ static int __devinit sh_irda_probe(struct platform_device *pdev) goto exit; err_mem_4: - clk_put(self->clk); -err_mem_3: + pm_runtime_disable(&pdev->dev); sh_irda_remove_iobuf(self); err_mem_2: iounmap(self->membase); @@ -840,7 +838,7 @@ static int __devexit sh_irda_remove(struct platform_device *pdev) return 0; unregister_netdev(ndev); - clk_put(self->clk); + pm_runtime_disable(&pdev->dev); sh_irda_remove_iobuf(self); iounmap(self->membase); free_netdev(ndev); @@ -849,11 +847,29 @@ static int __devexit sh_irda_remove(struct platform_device *pdev) return 0; } +static int sh_irda_runtime_nop(struct device *dev) +{ + /* Runtime PM callback shared between ->runtime_suspend() + * and ->runtime_resume(). Simply returns success. + * + * This driver re-initializes all registers after + * pm_runtime_get_sync() anyway so there is no need + * to save and restore registers here. + */ + return 0; +} + +static const struct dev_pm_ops sh_irda_pm_ops = { + .runtime_suspend = sh_irda_runtime_nop, + .runtime_resume = sh_irda_runtime_nop, +}; + static struct platform_driver sh_irda_driver = { - .probe = sh_irda_probe, - .remove = __devexit_p(sh_irda_remove), - .driver = { - .name = DRIVER_NAME, + .probe = sh_irda_probe, + .remove = __devexit_p(sh_irda_remove), + .driver = { + .name = DRIVER_NAME, + .pm = &sh_irda_pm_ops, }, }; @@ -870,6 +886,6 @@ static void __exit sh_irda_exit(void) module_init(sh_irda_init); module_exit(sh_irda_exit); -MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>"); +MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); MODULE_DESCRIPTION("SuperH IrDA driver"); MODULE_LICENSE("GPL"); |