On 09/10/2012 06:46 PM, Lee Jones wrote: > Ola poke. > > On Fri, Aug 24, 2012 at 03:01:37PM +0100, Lee Jones wrote: >> In the initial submission of the MSP driver msp1 and msp3's associated >> pinctrl mechanism was passed back to platform code using a plat_init() >> call-back routine, but it has no place in platform code. The MSP driver >> should set this up for the appropriate ports. Instead we use a use_pinctrl >> identifier which is passed from platform_data/Device Tree which indicates >> which ports should use pinctrl. >> >> CC: [email protected] >> Signed-off-by: Lee Jones <[email protected]> >> --- >> arch/arm/mach-ux500/board-mop500-msp.c | 75 >> +------------------------------- >> arch/arm/mach-ux500/include/mach/msp.h | 2 - >> sound/soc/ux500/ux500_msp_i2s.c | 67 +++++++++++++++++++++------- >> sound/soc/ux500/ux500_msp_i2s.h | 8 +++- >> 4 files changed, 58 insertions(+), 94 deletions(-) >> >> diff --git a/arch/arm/mach-ux500/board-mop500-msp.c >> b/arch/arm/mach-ux500/board-mop500-msp.c >> index df15646..fc78d5d 100644 >> --- a/arch/arm/mach-ux500/board-mop500-msp.c >> +++ b/arch/arm/mach-ux500/board-mop500-msp.c >> @@ -23,53 +23,6 @@ >> #include "devices-db8500.h" >> #include "pins-db8500.h" >> >> -/* MSP1/3 Tx/Rx usage protection */ >> -static DEFINE_SPINLOCK(msp_rxtx_lock); >> - >> -/* Reference Count */ >> -static int msp_rxtx_ref; >> - >> -/* Pin modes */ >> -struct pinctrl *msp1_p; >> -struct pinctrl_state *msp1_def; >> -struct pinctrl_state *msp1_sleep; >> - >> -int msp13_i2s_init(void) >> -{ >> - int retval = 0; >> - unsigned long flags; >> - >> - spin_lock_irqsave(&msp_rxtx_lock, flags); >> - if (msp_rxtx_ref == 0 && !(IS_ERR(msp1_p) || IS_ERR(msp1_def))) { >> - retval = pinctrl_select_state(msp1_p, msp1_def); >> - if (retval) >> - pr_err("could not set MSP1 defstate\n"); >> - } >> - if (!retval) >> - msp_rxtx_ref++; >> - spin_unlock_irqrestore(&msp_rxtx_lock, flags); >> - >> - return retval; >> -} >> - >> -int msp13_i2s_exit(void) >> -{ >> - int retval = 0; >> - unsigned long flags; >> - >> - spin_lock_irqsave(&msp_rxtx_lock, flags); >> - WARN_ON(!msp_rxtx_ref); >> - msp_rxtx_ref--; >> - if (msp_rxtx_ref == 0 && !(IS_ERR(msp1_p) || IS_ERR(msp1_sleep))) { >> - retval = pinctrl_select_state(msp1_p, msp1_sleep); >> - if (retval) >> - pr_err("could not set MSP1 sleepstate\n"); >> - } >> - spin_unlock_irqrestore(&msp_rxtx_lock, flags); >> - >> - return retval; >> -} >> - >> static struct stedma40_chan_cfg msp0_dma_rx = { >> .high_priority = true, >> .dir = STEDMA40_PERIPH_TO_MEM, >> @@ -132,8 +85,6 @@ static struct msp_i2s_platform_data msp1_platform_data = { >> .id = MSP_I2S_1, >> .msp_i2s_dma_rx = NULL, >> .msp_i2s_dma_tx = &msp1_dma_tx, >> - .msp_i2s_init = msp13_i2s_init, >> - .msp_i2s_exit = msp13_i2s_exit, >> }; >> >> static struct stedma40_chan_cfg msp2_dma_rx = { >> @@ -219,47 +170,23 @@ static struct msp_i2s_platform_data msp3_platform_data >> = { >> .id = MSP_I2S_3, >> .msp_i2s_dma_rx = &msp1_dma_rx, >> .msp_i2s_dma_tx = NULL, >> - .msp_i2s_init = msp13_i2s_init, >> - .msp_i2s_exit = msp13_i2s_exit, >> }; >> >> int mop500_msp_init(struct device *parent) >> { >> - struct platform_device *msp1; >> - >> pr_info("%s: Register platform-device 'snd-soc-mop500'.\n", __func__); >> platform_device_register(&snd_soc_mop500); >> >> pr_info("Initialize MSP I2S-devices.\n"); >> db8500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, >> &msp0_platform_data); >> - msp1 = db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, >> + db8500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, >> &msp1_platform_data); >> db8500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, >> &msp2_platform_data); >> db8500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, >> &msp3_platform_data); >> >> - /* Get the pinctrl handle for MSP1 */ >> - if (msp1) { >> - msp1_p = pinctrl_get(&msp1->dev); >> - if (IS_ERR(msp1_p)) >> - dev_err(&msp1->dev, "could not get MSP1 pinctrl\n"); >> - else { >> - msp1_def = pinctrl_lookup_state(msp1_p, >> - PINCTRL_STATE_DEFAULT); >> - if (IS_ERR(msp1_def)) { >> - dev_err(&msp1->dev, >> - "could not get MSP1 defstate\n"); >> - } >> - msp1_sleep = pinctrl_lookup_state(msp1_p, >> - PINCTRL_STATE_SLEEP); >> - if (IS_ERR(msp1_sleep)) >> - dev_err(&msp1->dev, >> - "could not get MSP1 idlestate\n"); >> - } >> - } >> - >> pr_info("%s: Register platform-device 'ux500-pcm'\n", __func__); >> platform_device_register(&ux500_pcm); >> >> diff --git a/arch/arm/mach-ux500/include/mach/msp.h >> b/arch/arm/mach-ux500/include/mach/msp.h >> index 798be19..3cc7142 100644 >> --- a/arch/arm/mach-ux500/include/mach/msp.h >> +++ b/arch/arm/mach-ux500/include/mach/msp.h >> @@ -22,8 +22,6 @@ struct msp_i2s_platform_data { >> enum msp_i2s_id id; >> struct stedma40_chan_cfg *msp_i2s_dma_rx; >> struct stedma40_chan_cfg *msp_i2s_dma_tx; >> - int (*msp_i2s_init) (void); >> - int (*msp_i2s_exit) (void); >> }; >> >> #endif >> diff --git a/sound/soc/ux500/ux500_msp_i2s.c >> b/sound/soc/ux500/ux500_msp_i2s.c >> index 36be11e..08813c5 100644 >> --- a/sound/soc/ux500/ux500_msp_i2s.c >> +++ b/sound/soc/ux500/ux500_msp_i2s.c >> @@ -15,6 +15,7 @@ >> >> #include <linux/module.h> >> #include <linux/platform_device.h> >> +#include <linux/pinctrl/consumer.h> >> #include <linux/delay.h> >> #include <linux/slab.h> >> >> @@ -25,6 +26,9 @@ >> >> #include "ux500_msp_i2s.h" >> >> +/* MSP1/3 Tx/Rx usage protection */ >> +static DEFINE_SPINLOCK(msp_rxtx_lock); >> + >> /* Protocol desciptors */ >> static const struct msp_protdesc prot_descs[] = { >> { /* I2S */ >> @@ -352,17 +356,23 @@ static int configure_multichannel(struct ux500_msp >> *msp, >> >> static int enable_msp(struct ux500_msp *msp, struct ux500_msp_config >> *config) >> { >> - int status = 0; >> + int status = 0, retval = 0; >> u32 reg_val_DMACR, reg_val_GCR; >> + unsigned long flags; >> >> /* Check msp state whether in RUN or CONFIGURED Mode */ >> - if ((msp->msp_state == MSP_STATE_IDLE) && (msp->plat_init)) { >> - status = msp->plat_init(); >> - if (status) { >> - dev_err(msp->dev, "%s: ERROR: Failed to init MSP >> (%d)!\n", >> - __func__, status); >> - return status; >> + if (msp->msp_state == MSP_STATE_IDLE) { >> + spin_lock_irqsave(&msp_rxtx_lock, flags); >> + if (msp->pinctrl_rxtx_ref == 0 && >> + !(IS_ERR(msp->pinctrl_p) || IS_ERR(msp->pinctrl_def))) { >> + retval = pinctrl_select_state(msp->pinctrl_p, >> + msp->pinctrl_def); >> + if (retval) >> + pr_err("could not set MSP defstate\n"); >> } >> + if (!retval) >> + msp->pinctrl_rxtx_ref++; >> + spin_unlock_irqrestore(&msp_rxtx_lock, flags); >> } >> >> /* Configure msp with protocol dependent settings */ >> @@ -620,7 +630,8 @@ int ux500_msp_i2s_trigger(struct ux500_msp *msp, int >> cmd, int direction) >> >> int ux500_msp_i2s_close(struct ux500_msp *msp, unsigned int dir) >> { >> - int status = 0; >> + int status = 0, retval = 0; >> + unsigned long flags; >> >> dev_dbg(msp->dev, "%s: Enter (dir = 0x%01x).\n", __func__, dir); >> >> @@ -631,12 +642,19 @@ int ux500_msp_i2s_close(struct ux500_msp *msp, >> unsigned int dir) >> writel((readl(msp->registers + MSP_GCR) & >> (~(FRAME_GEN_ENABLE | SRG_ENABLE))), >> msp->registers + MSP_GCR); >> - if (msp->plat_exit) >> - status = msp->plat_exit(); >> - if (status) >> - dev_warn(msp->dev, >> - "%s: WARN: ux500_msp_i2s_exit failed >> (%d)!\n", >> - __func__, status); >> + >> + spin_lock_irqsave(&msp_rxtx_lock, flags); >> + WARN_ON(!msp->pinctrl_rxtx_ref); >> + msp->pinctrl_rxtx_ref--; >> + if (msp->pinctrl_rxtx_ref == 0 && >> + !(IS_ERR(msp->pinctrl_p) || >> IS_ERR(msp->pinctrl_sleep))) { >> + retval = pinctrl_select_state(msp->pinctrl_p, >> + msp->pinctrl_sleep); >> + if (retval) >> + pr_err("could not set MSP sleepstate\n"); >> + } >> + spin_unlock_irqrestore(&msp_rxtx_lock, flags); >> + >> writel(0, msp->registers + MSP_GCR); >> writel(0, msp->registers + MSP_TCF); >> writel(0, msp->registers + MSP_RCF); >> @@ -678,8 +696,6 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev, >> >> msp->id = platform_data->id; >> msp->dev = &pdev->dev; >> - msp->plat_init = platform_data->msp_i2s_init; >> - msp->plat_exit = platform_data->msp_i2s_exit; >> msp->dma_cfg_rx = platform_data->msp_i2s_dma_rx; >> msp->dma_cfg_tx = platform_data->msp_i2s_dma_tx; >> >> @@ -717,6 +733,25 @@ int ux500_msp_i2s_init_msp(struct platform_device *pdev, >> dev_dbg(&pdev->dev, "I2S device-name: '%s'\n", i2s_cont->name); >> msp->i2s_cont = i2s_cont; >> >> + msp->pinctrl_p = pinctrl_get(msp->dev); >> + if (IS_ERR(msp->pinctrl_p)) >> + dev_err(&pdev->dev, "could not get MSP pinctrl\n"); >> + else { >> + msp->pinctrl_def = pinctrl_lookup_state(msp->pinctrl_p, >> + PINCTRL_STATE_DEFAULT); >> + if (IS_ERR(msp->pinctrl_def)) { >> + dev_err(&pdev->dev, >> + "could not get MSP defstate (%li)\n", >> + PTR_ERR(msp->pinctrl_def)); >> + } >> + msp->pinctrl_sleep = pinctrl_lookup_state(msp->pinctrl_p, >> + PINCTRL_STATE_SLEEP); >> + if (IS_ERR(msp->pinctrl_sleep)) >> + dev_err(&pdev->dev, >> + "could not get MSP idlestate (%li)\n", >> + PTR_ERR(msp->pinctrl_def)); >> + } >> + >> return 0; >> >> err_i2s_cont: >> diff --git a/sound/soc/ux500/ux500_msp_i2s.h >> b/sound/soc/ux500/ux500_msp_i2s.h >> index 2d9136d..1311c0d 100644 >> --- a/sound/soc/ux500/ux500_msp_i2s.h >> +++ b/sound/soc/ux500/ux500_msp_i2s.h >> @@ -524,14 +524,18 @@ struct ux500_msp { >> struct dma_chan *rx_pipeid; >> enum msp_state msp_state; >> int (*transfer) (struct ux500_msp *msp, struct i2s_message *message); >> - int (*plat_init) (void); >> - int (*plat_exit) (void); >> struct timer_list notify_timer; >> int def_elem_len; >> unsigned int dir_busy; >> int loopback_enable; >> u32 backup_regs[MAX_MSP_BACKUP_REGS]; >> unsigned int f_bitclk; >> + /* Pin modes */ >> + struct pinctrl *pinctrl_p; >> + struct pinctrl_state *pinctrl_def; >> + struct pinctrl_state *pinctrl_sleep; >> + /* Reference Count */ >> + int pinctrl_rxtx_ref; >> }; >> >> struct ux500_msp_dma_params { >> -- >> 1.7.9.5 >> >
Looks OK from my perspective! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
