Loading arch/arm/mach-pxa/Kconfig +0 −5 Original line number Diff line number Diff line Loading @@ -653,11 +653,6 @@ config PXA_SSP help Enable support for PXA2xx SSP ports config PXA_SSP_LEGACY bool help Support of legacy SSP API config TOSA_BT tristate "Control the state of built-in bluetooth chip on Sharp SL-6000" depends on MACH_TOSA Loading arch/arm/mach-pxa/include/mach/ssp.h +0 −35 Original line number Diff line number Diff line Loading @@ -46,41 +46,6 @@ struct ssp_device { int drcmr_tx; }; #ifdef CONFIG_PXA_SSP_LEGACY /* * SSP initialisation flags */ #define SSP_NO_IRQ 0x1 /* don't register an irq handler in SSP driver */ struct ssp_state { u32 cr0; u32 cr1; u32 to; u32 psp; }; struct ssp_dev { struct ssp_device *ssp; u32 port; u32 mode; u32 flags; u32 psp_flags; u32 speed; int irq; }; int ssp_write_word(struct ssp_dev *dev, u32 data); int ssp_read_word(struct ssp_dev *dev, u32 *data); int ssp_flush(struct ssp_dev *dev); void ssp_enable(struct ssp_dev *dev); void ssp_disable(struct ssp_dev *dev); void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp); void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp); int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags); int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed); void ssp_exit(struct ssp_dev *dev); #endif /* CONFIG_PXA_SSP_LEGACY */ /** * ssp_write_reg - Write to a SSP register * Loading arch/arm/mach-pxa/ssp.c +0 −286 Original line number Diff line number Diff line Loading @@ -35,278 +35,6 @@ #include <mach/ssp.h> #include <mach/regs-ssp.h> #ifdef CONFIG_PXA_SSP_LEGACY #define TIMEOUT 100000 static irqreturn_t ssp_interrupt(int irq, void *dev_id) { struct ssp_dev *dev = dev_id; struct ssp_device *ssp = dev->ssp; unsigned int status; status = __raw_readl(ssp->mmio_base + SSSR); __raw_writel(status, ssp->mmio_base + SSSR); if (status & SSSR_ROR) printk(KERN_WARNING "SSP(%d): receiver overrun\n", dev->port); if (status & SSSR_TUR) printk(KERN_WARNING "SSP(%d): transmitter underrun\n", dev->port); if (status & SSSR_BCE) printk(KERN_WARNING "SSP(%d): bit count error\n", dev->port); return IRQ_HANDLED; } /** * ssp_write_word - write a word to the SSP port * @data: 32-bit, MSB justified data to write. * * Wait for a free entry in the SSP transmit FIFO, and write a data * word to the SSP port. * * The caller is expected to perform the necessary locking. * * Returns: * %-ETIMEDOUT timeout occurred * 0 success */ int ssp_write_word(struct ssp_dev *dev, u32 data) { struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT; while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_TNF)) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } __raw_writel(data, ssp->mmio_base + SSDR); return 0; } /** * ssp_read_word - read a word from the SSP port * * Wait for a data word in the SSP receive FIFO, and return the * received data. Data is LSB justified. * * Note: Currently, if data is not expected to be received, this * function will wait for ever. * * The caller is expected to perform the necessary locking. * * Returns: * %-ETIMEDOUT timeout occurred * 32-bit data success */ int ssp_read_word(struct ssp_dev *dev, u32 *data) { struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT; while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE)) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } *data = __raw_readl(ssp->mmio_base + SSDR); return 0; } /** * ssp_flush - flush the transmit and receive FIFOs * * Wait for the SSP to idle, and ensure that the receive FIFO * is empty. * * The caller is expected to perform the necessary locking. */ int ssp_flush(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT * 2; /* ensure TX FIFO is empty instead of not full */ if (cpu_is_pxa3xx()) { while (__raw_readl(ssp->mmio_base + SSSR) & 0xf00) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } timeout = TIMEOUT * 2; } do { while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE) { if (!--timeout) return -ETIMEDOUT; (void)__raw_readl(ssp->mmio_base + SSDR); } if (!--timeout) return -ETIMEDOUT; } while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_BSY); return 0; } /** * ssp_enable - enable the SSP port * * Turn on the SSP port. */ void ssp_enable(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; uint32_t sscr0; sscr0 = __raw_readl(ssp->mmio_base + SSCR0); sscr0 |= SSCR0_SSE; __raw_writel(sscr0, ssp->mmio_base + SSCR0); } /** * ssp_disable - shut down the SSP port * * Turn off the SSP port, optionally powering it down. */ void ssp_disable(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; uint32_t sscr0; sscr0 = __raw_readl(ssp->mmio_base + SSCR0); sscr0 &= ~SSCR0_SSE; __raw_writel(sscr0, ssp->mmio_base + SSCR0); } /** * ssp_save_state - save the SSP configuration * @ssp: pointer to structure to save SSP configuration * * Save the configured SSP state for suspend. */ void ssp_save_state(struct ssp_dev *dev, struct ssp_state *state) { struct ssp_device *ssp = dev->ssp; state->cr0 = __raw_readl(ssp->mmio_base + SSCR0); state->cr1 = __raw_readl(ssp->mmio_base + SSCR1); state->to = __raw_readl(ssp->mmio_base + SSTO); state->psp = __raw_readl(ssp->mmio_base + SSPSP); ssp_disable(dev); } /** * ssp_restore_state - restore a previously saved SSP configuration * @ssp: pointer to configuration saved by ssp_save_state * * Restore the SSP configuration saved previously by ssp_save_state. */ void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *state) { struct ssp_device *ssp = dev->ssp; uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE; __raw_writel(sssr, ssp->mmio_base + SSSR); __raw_writel(state->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0); __raw_writel(state->cr1, ssp->mmio_base + SSCR1); __raw_writel(state->to, ssp->mmio_base + SSTO); __raw_writel(state->psp, ssp->mmio_base + SSPSP); __raw_writel(state->cr0, ssp->mmio_base + SSCR0); } /** * ssp_config - configure SSP port settings * @mode: port operating mode * @flags: port config flags * @psp_flags: port PSP config flags * @speed: port speed * * Port MUST be disabled by ssp_disable before making any config changes. */ int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed) { struct ssp_device *ssp = dev->ssp; dev->mode = mode; dev->flags = flags; dev->psp_flags = psp_flags; dev->speed = speed; /* set up port type, speed, port settings */ __raw_writel((dev->speed | dev->mode), ssp->mmio_base + SSCR0); __raw_writel(dev->flags, ssp->mmio_base + SSCR1); __raw_writel(dev->psp_flags, ssp->mmio_base + SSPSP); return 0; } /** * ssp_init - setup the SSP port * * initialise and claim resources for the SSP port. * * Returns: * %-ENODEV if the SSP port is unavailable * %-EBUSY if the resources are already in use * %0 on success */ int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags) { struct ssp_device *ssp; int ret; ssp = ssp_request(port, "SSP"); if (ssp == NULL) return -ENODEV; dev->ssp = ssp; dev->port = port; /* do we need to get irq */ if (!(init_flags & SSP_NO_IRQ)) { ret = request_irq(ssp->irq, ssp_interrupt, 0, "SSP", dev); if (ret) goto out_region; dev->irq = ssp->irq; } else dev->irq = NO_IRQ; /* turn on SSP port clock */ clk_enable(ssp->clk); return 0; out_region: ssp_free(ssp); return ret; } /** * ssp_exit - undo the effects of ssp_init * * release and free resources for the SSP port. */ void ssp_exit(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; ssp_disable(dev); if (dev->irq != NO_IRQ) free_irq(dev->irq, dev); clk_disable(ssp->clk); ssp_free(ssp); } #endif /* CONFIG_PXA_SSP_LEGACY */ static DEFINE_MUTEX(ssp_lock); static LIST_HEAD(ssp_list); Loading Loading @@ -491,20 +219,6 @@ static void __exit pxa_ssp_exit(void) arch_initcall(pxa_ssp_init); module_exit(pxa_ssp_exit); #ifdef CONFIG_PXA_SSP_LEGACY EXPORT_SYMBOL(ssp_write_word); EXPORT_SYMBOL(ssp_read_word); EXPORT_SYMBOL(ssp_flush); EXPORT_SYMBOL(ssp_enable); EXPORT_SYMBOL(ssp_disable); EXPORT_SYMBOL(ssp_save_state); EXPORT_SYMBOL(ssp_restore_state); EXPORT_SYMBOL(ssp_init); EXPORT_SYMBOL(ssp_exit); EXPORT_SYMBOL(ssp_config); #endif MODULE_DESCRIPTION("PXA SSP driver"); MODULE_AUTHOR("Liam Girdwood"); MODULE_LICENSE("GPL"); Loading
arch/arm/mach-pxa/Kconfig +0 −5 Original line number Diff line number Diff line Loading @@ -653,11 +653,6 @@ config PXA_SSP help Enable support for PXA2xx SSP ports config PXA_SSP_LEGACY bool help Support of legacy SSP API config TOSA_BT tristate "Control the state of built-in bluetooth chip on Sharp SL-6000" depends on MACH_TOSA Loading
arch/arm/mach-pxa/include/mach/ssp.h +0 −35 Original line number Diff line number Diff line Loading @@ -46,41 +46,6 @@ struct ssp_device { int drcmr_tx; }; #ifdef CONFIG_PXA_SSP_LEGACY /* * SSP initialisation flags */ #define SSP_NO_IRQ 0x1 /* don't register an irq handler in SSP driver */ struct ssp_state { u32 cr0; u32 cr1; u32 to; u32 psp; }; struct ssp_dev { struct ssp_device *ssp; u32 port; u32 mode; u32 flags; u32 psp_flags; u32 speed; int irq; }; int ssp_write_word(struct ssp_dev *dev, u32 data); int ssp_read_word(struct ssp_dev *dev, u32 *data); int ssp_flush(struct ssp_dev *dev); void ssp_enable(struct ssp_dev *dev); void ssp_disable(struct ssp_dev *dev); void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp); void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp); int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags); int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed); void ssp_exit(struct ssp_dev *dev); #endif /* CONFIG_PXA_SSP_LEGACY */ /** * ssp_write_reg - Write to a SSP register * Loading
arch/arm/mach-pxa/ssp.c +0 −286 Original line number Diff line number Diff line Loading @@ -35,278 +35,6 @@ #include <mach/ssp.h> #include <mach/regs-ssp.h> #ifdef CONFIG_PXA_SSP_LEGACY #define TIMEOUT 100000 static irqreturn_t ssp_interrupt(int irq, void *dev_id) { struct ssp_dev *dev = dev_id; struct ssp_device *ssp = dev->ssp; unsigned int status; status = __raw_readl(ssp->mmio_base + SSSR); __raw_writel(status, ssp->mmio_base + SSSR); if (status & SSSR_ROR) printk(KERN_WARNING "SSP(%d): receiver overrun\n", dev->port); if (status & SSSR_TUR) printk(KERN_WARNING "SSP(%d): transmitter underrun\n", dev->port); if (status & SSSR_BCE) printk(KERN_WARNING "SSP(%d): bit count error\n", dev->port); return IRQ_HANDLED; } /** * ssp_write_word - write a word to the SSP port * @data: 32-bit, MSB justified data to write. * * Wait for a free entry in the SSP transmit FIFO, and write a data * word to the SSP port. * * The caller is expected to perform the necessary locking. * * Returns: * %-ETIMEDOUT timeout occurred * 0 success */ int ssp_write_word(struct ssp_dev *dev, u32 data) { struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT; while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_TNF)) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } __raw_writel(data, ssp->mmio_base + SSDR); return 0; } /** * ssp_read_word - read a word from the SSP port * * Wait for a data word in the SSP receive FIFO, and return the * received data. Data is LSB justified. * * Note: Currently, if data is not expected to be received, this * function will wait for ever. * * The caller is expected to perform the necessary locking. * * Returns: * %-ETIMEDOUT timeout occurred * 32-bit data success */ int ssp_read_word(struct ssp_dev *dev, u32 *data) { struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT; while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE)) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } *data = __raw_readl(ssp->mmio_base + SSDR); return 0; } /** * ssp_flush - flush the transmit and receive FIFOs * * Wait for the SSP to idle, and ensure that the receive FIFO * is empty. * * The caller is expected to perform the necessary locking. */ int ssp_flush(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; int timeout = TIMEOUT * 2; /* ensure TX FIFO is empty instead of not full */ if (cpu_is_pxa3xx()) { while (__raw_readl(ssp->mmio_base + SSSR) & 0xf00) { if (!--timeout) return -ETIMEDOUT; cpu_relax(); } timeout = TIMEOUT * 2; } do { while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE) { if (!--timeout) return -ETIMEDOUT; (void)__raw_readl(ssp->mmio_base + SSDR); } if (!--timeout) return -ETIMEDOUT; } while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_BSY); return 0; } /** * ssp_enable - enable the SSP port * * Turn on the SSP port. */ void ssp_enable(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; uint32_t sscr0; sscr0 = __raw_readl(ssp->mmio_base + SSCR0); sscr0 |= SSCR0_SSE; __raw_writel(sscr0, ssp->mmio_base + SSCR0); } /** * ssp_disable - shut down the SSP port * * Turn off the SSP port, optionally powering it down. */ void ssp_disable(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; uint32_t sscr0; sscr0 = __raw_readl(ssp->mmio_base + SSCR0); sscr0 &= ~SSCR0_SSE; __raw_writel(sscr0, ssp->mmio_base + SSCR0); } /** * ssp_save_state - save the SSP configuration * @ssp: pointer to structure to save SSP configuration * * Save the configured SSP state for suspend. */ void ssp_save_state(struct ssp_dev *dev, struct ssp_state *state) { struct ssp_device *ssp = dev->ssp; state->cr0 = __raw_readl(ssp->mmio_base + SSCR0); state->cr1 = __raw_readl(ssp->mmio_base + SSCR1); state->to = __raw_readl(ssp->mmio_base + SSTO); state->psp = __raw_readl(ssp->mmio_base + SSPSP); ssp_disable(dev); } /** * ssp_restore_state - restore a previously saved SSP configuration * @ssp: pointer to configuration saved by ssp_save_state * * Restore the SSP configuration saved previously by ssp_save_state. */ void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *state) { struct ssp_device *ssp = dev->ssp; uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE; __raw_writel(sssr, ssp->mmio_base + SSSR); __raw_writel(state->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0); __raw_writel(state->cr1, ssp->mmio_base + SSCR1); __raw_writel(state->to, ssp->mmio_base + SSTO); __raw_writel(state->psp, ssp->mmio_base + SSPSP); __raw_writel(state->cr0, ssp->mmio_base + SSCR0); } /** * ssp_config - configure SSP port settings * @mode: port operating mode * @flags: port config flags * @psp_flags: port PSP config flags * @speed: port speed * * Port MUST be disabled by ssp_disable before making any config changes. */ int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed) { struct ssp_device *ssp = dev->ssp; dev->mode = mode; dev->flags = flags; dev->psp_flags = psp_flags; dev->speed = speed; /* set up port type, speed, port settings */ __raw_writel((dev->speed | dev->mode), ssp->mmio_base + SSCR0); __raw_writel(dev->flags, ssp->mmio_base + SSCR1); __raw_writel(dev->psp_flags, ssp->mmio_base + SSPSP); return 0; } /** * ssp_init - setup the SSP port * * initialise and claim resources for the SSP port. * * Returns: * %-ENODEV if the SSP port is unavailable * %-EBUSY if the resources are already in use * %0 on success */ int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags) { struct ssp_device *ssp; int ret; ssp = ssp_request(port, "SSP"); if (ssp == NULL) return -ENODEV; dev->ssp = ssp; dev->port = port; /* do we need to get irq */ if (!(init_flags & SSP_NO_IRQ)) { ret = request_irq(ssp->irq, ssp_interrupt, 0, "SSP", dev); if (ret) goto out_region; dev->irq = ssp->irq; } else dev->irq = NO_IRQ; /* turn on SSP port clock */ clk_enable(ssp->clk); return 0; out_region: ssp_free(ssp); return ret; } /** * ssp_exit - undo the effects of ssp_init * * release and free resources for the SSP port. */ void ssp_exit(struct ssp_dev *dev) { struct ssp_device *ssp = dev->ssp; ssp_disable(dev); if (dev->irq != NO_IRQ) free_irq(dev->irq, dev); clk_disable(ssp->clk); ssp_free(ssp); } #endif /* CONFIG_PXA_SSP_LEGACY */ static DEFINE_MUTEX(ssp_lock); static LIST_HEAD(ssp_list); Loading Loading @@ -491,20 +219,6 @@ static void __exit pxa_ssp_exit(void) arch_initcall(pxa_ssp_init); module_exit(pxa_ssp_exit); #ifdef CONFIG_PXA_SSP_LEGACY EXPORT_SYMBOL(ssp_write_word); EXPORT_SYMBOL(ssp_read_word); EXPORT_SYMBOL(ssp_flush); EXPORT_SYMBOL(ssp_enable); EXPORT_SYMBOL(ssp_disable); EXPORT_SYMBOL(ssp_save_state); EXPORT_SYMBOL(ssp_restore_state); EXPORT_SYMBOL(ssp_init); EXPORT_SYMBOL(ssp_exit); EXPORT_SYMBOL(ssp_config); #endif MODULE_DESCRIPTION("PXA SSP driver"); MODULE_AUTHOR("Liam Girdwood"); MODULE_LICENSE("GPL");
Eric Miao <eric.y.miao@gmail.com>Eric Miao <eric.y.miao@gmail.com>