diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 18:42:02 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 18:42:02 -0800 |
commit | 43fd4bd72c85c1e8dac0f23dce16f0277791dcdd (patch) | |
tree | 2e0ff659fade5b1a0c789d5f0601001972f7694a /drivers/mailbox | |
parent | 454d9c4aa7d54fd4f15c1427fc4f51347f300262 (diff) | |
parent | c6c6bc6ea9fce31baaca053befc31215cfcb3dd9 (diff) | |
download | linux-43fd4bd72c85c1e8dac0f23dce16f0277791dcdd.tar.bz2 |
Merge tag 'mailbox-v5.5' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- omap : misc - catch error returned from pm_runtime_put_sync
- hisi : misc - drop .owner from platform_driver
- stm : change how wakeup is handled
- imx : fix - bailout on error and nuke correct irq
- imx : add support for imx7ulp platform
* tag 'mailbox-v5.5' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox: imx: add support for imx v1 mu
dt-bindings: mailbox: imx-mu: add imx7ulp MU support
mailbox: imx: Clear the right interrupts at shutdown
mailbox: imx: Fix Tx doorbell shutdown path
mailbox: stm32-ipcc: Update wakeup management
mailbox: no need to set .owner platform_driver_register
mailbox/omap: Handle if CONFIG_PM is disabled
Diffstat (limited to 'drivers/mailbox')
-rw-r--r-- | drivers/mailbox/hi6220-mailbox.c | 1 | ||||
-rw-r--r-- | drivers/mailbox/imx-mailbox.c | 74 | ||||
-rw-r--r-- | drivers/mailbox/omap-mailbox.c | 2 | ||||
-rw-r--r-- | drivers/mailbox/stm32-ipcc.c | 36 |
4 files changed, 62 insertions, 51 deletions
diff --git a/drivers/mailbox/hi6220-mailbox.c b/drivers/mailbox/hi6220-mailbox.c index 8b9eb56e4311..cc236ac7a0b5 100644 --- a/drivers/mailbox/hi6220-mailbox.c +++ b/drivers/mailbox/hi6220-mailbox.c @@ -354,7 +354,6 @@ static int hi6220_mbox_probe(struct platform_device *pdev) static struct platform_driver hi6220_mbox_driver = { .driver = { .name = "hi6220-mbox", - .owner = THIS_MODULE, .of_match_table = hi6220_mbox_of_match, }, .probe = hi6220_mbox_probe, diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c index 9f74dee1a58c..2cdcdc5f1119 100644 --- a/drivers/mailbox/imx-mailbox.c +++ b/drivers/mailbox/imx-mailbox.c @@ -12,19 +12,11 @@ #include <linux/of_device.h> #include <linux/slab.h> -/* Transmit Register */ -#define IMX_MU_xTRn(x) (0x00 + 4 * (x)) -/* Receive Register */ -#define IMX_MU_xRRn(x) (0x10 + 4 * (x)) -/* Status Register */ -#define IMX_MU_xSR 0x20 #define IMX_MU_xSR_GIPn(x) BIT(28 + (3 - (x))) #define IMX_MU_xSR_RFn(x) BIT(24 + (3 - (x))) #define IMX_MU_xSR_TEn(x) BIT(20 + (3 - (x))) #define IMX_MU_xSR_BRDIP BIT(9) -/* Control Register */ -#define IMX_MU_xCR 0x24 /* General Purpose Interrupt Enable */ #define IMX_MU_xCR_GIEn(x) BIT(28 + (3 - (x))) /* Receive Interrupt Enable */ @@ -44,6 +36,13 @@ enum imx_mu_chan_type { IMX_MU_TYPE_RXDB, /* Rx doorbell */ }; +struct imx_mu_dcfg { + u32 xTR[4]; /* Transmit Registers */ + u32 xRR[4]; /* Receive Registers */ + u32 xSR; /* Status Register */ + u32 xCR; /* Control Register */ +}; + struct imx_mu_con_priv { unsigned int idx; char irq_desc[IMX_MU_CHAN_NAME_SIZE]; @@ -61,12 +60,27 @@ struct imx_mu_priv { struct mbox_chan mbox_chans[IMX_MU_CHANS]; struct imx_mu_con_priv con_priv[IMX_MU_CHANS]; + const struct imx_mu_dcfg *dcfg; struct clk *clk; int irq; bool side_b; }; +static const struct imx_mu_dcfg imx_mu_cfg_imx6sx = { + .xTR = {0x0, 0x4, 0x8, 0xc}, + .xRR = {0x10, 0x14, 0x18, 0x1c}, + .xSR = 0x20, + .xCR = 0x24, +}; + +static const struct imx_mu_dcfg imx_mu_cfg_imx7ulp = { + .xTR = {0x20, 0x24, 0x28, 0x2c}, + .xRR = {0x40, 0x44, 0x48, 0x4c}, + .xSR = 0x60, + .xCR = 0x64, +}; + static struct imx_mu_priv *to_imx_mu_priv(struct mbox_controller *mbox) { return container_of(mbox, struct imx_mu_priv, mbox); @@ -88,10 +102,10 @@ static u32 imx_mu_xcr_rmw(struct imx_mu_priv *priv, u32 set, u32 clr) u32 val; spin_lock_irqsave(&priv->xcr_lock, flags); - val = imx_mu_read(priv, IMX_MU_xCR); + val = imx_mu_read(priv, priv->dcfg->xCR); val &= ~clr; val |= set; - imx_mu_write(priv, val, IMX_MU_xCR); + imx_mu_write(priv, val, priv->dcfg->xCR); spin_unlock_irqrestore(&priv->xcr_lock, flags); return val; @@ -111,8 +125,8 @@ static irqreturn_t imx_mu_isr(int irq, void *p) struct imx_mu_con_priv *cp = chan->con_priv; u32 val, ctrl, dat; - ctrl = imx_mu_read(priv, IMX_MU_xCR); - val = imx_mu_read(priv, IMX_MU_xSR); + ctrl = imx_mu_read(priv, priv->dcfg->xCR); + val = imx_mu_read(priv, priv->dcfg->xSR); switch (cp->type) { case IMX_MU_TYPE_TX: @@ -138,10 +152,10 @@ static irqreturn_t imx_mu_isr(int irq, void *p) imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx)); mbox_chan_txdone(chan, 0); } else if (val == IMX_MU_xSR_RFn(cp->idx)) { - dat = imx_mu_read(priv, IMX_MU_xRRn(cp->idx)); + dat = imx_mu_read(priv, priv->dcfg->xRR[cp->idx]); mbox_chan_received_data(chan, (void *)&dat); } else if (val == IMX_MU_xSR_GIPn(cp->idx)) { - imx_mu_write(priv, IMX_MU_xSR_GIPn(cp->idx), IMX_MU_xSR); + imx_mu_write(priv, IMX_MU_xSR_GIPn(cp->idx), priv->dcfg->xSR); mbox_chan_received_data(chan, NULL); } else { dev_warn_ratelimited(priv->dev, "Not handled interrupt\n"); @@ -159,7 +173,7 @@ static int imx_mu_send_data(struct mbox_chan *chan, void *data) switch (cp->type) { case IMX_MU_TYPE_TX: - imx_mu_write(priv, *arg, IMX_MU_xTRn(cp->idx)); + imx_mu_write(priv, *arg, priv->dcfg->xTR[cp->idx]); imx_mu_xcr_rmw(priv, IMX_MU_xCR_TIEn(cp->idx), 0); break; case IMX_MU_TYPE_TXDB: @@ -214,11 +228,24 @@ static void imx_mu_shutdown(struct mbox_chan *chan) struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); struct imx_mu_con_priv *cp = chan->con_priv; - if (cp->type == IMX_MU_TYPE_TXDB) + if (cp->type == IMX_MU_TYPE_TXDB) { tasklet_kill(&cp->txdb_tasklet); + return; + } - imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx) | - IMX_MU_xCR_RIEn(cp->idx) | IMX_MU_xCR_GIEn(cp->idx)); + switch (cp->type) { + case IMX_MU_TYPE_TX: + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_TIEn(cp->idx)); + break; + case IMX_MU_TYPE_RX: + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_RIEn(cp->idx)); + break; + case IMX_MU_TYPE_RXDB: + imx_mu_xcr_rmw(priv, 0, IMX_MU_xCR_GIEn(cp->idx)); + break; + default: + break; + } free_irq(priv->irq, chan); } @@ -257,7 +284,7 @@ static void imx_mu_init_generic(struct imx_mu_priv *priv) return; /* Set default MU configuration */ - imx_mu_write(priv, 0, IMX_MU_xCR); + imx_mu_write(priv, 0, priv->dcfg->xCR); } static int imx_mu_probe(struct platform_device *pdev) @@ -265,6 +292,7 @@ static int imx_mu_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct imx_mu_priv *priv; + const struct imx_mu_dcfg *dcfg; unsigned int i; int ret; @@ -282,6 +310,11 @@ static int imx_mu_probe(struct platform_device *pdev) if (priv->irq < 0) return priv->irq; + dcfg = of_device_get_match_data(dev); + if (!dcfg) + return -EINVAL; + priv->dcfg = dcfg; + priv->clk = devm_clk_get(dev, NULL); if (IS_ERR(priv->clk)) { if (PTR_ERR(priv->clk) != -ENOENT) @@ -335,7 +368,8 @@ static int imx_mu_remove(struct platform_device *pdev) } static const struct of_device_id imx_mu_dt_ids[] = { - { .compatible = "fsl,imx6sx-mu" }, + { .compatible = "fsl,imx7ulp-mu", .data = &imx_mu_cfg_imx7ulp }, + { .compatible = "fsl,imx6sx-mu", .data = &imx_mu_cfg_imx6sx }, { }, }; MODULE_DEVICE_TABLE(of, imx_mu_dt_ids); diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c index a3cd63583cf7..5978a35aac6d 100644 --- a/drivers/mailbox/omap-mailbox.c +++ b/drivers/mailbox/omap-mailbox.c @@ -868,7 +868,7 @@ static int omap_mbox_probe(struct platform_device *pdev) dev_info(mdev->dev, "omap mailbox rev 0x%x\n", l); ret = pm_runtime_put_sync(mdev->dev); - if (ret < 0) + if (ret < 0 && ret != -ENOSYS) goto unregister; devm_kfree(&pdev->dev, finfoblk); diff --git a/drivers/mailbox/stm32-ipcc.c b/drivers/mailbox/stm32-ipcc.c index 5c2d1e1f988b..ef966887aa15 100644 --- a/drivers/mailbox/stm32-ipcc.c +++ b/drivers/mailbox/stm32-ipcc.c @@ -52,7 +52,6 @@ struct stm32_ipcc { struct clk *clk; spinlock_t lock; /* protect access to IPCC registers */ int irqs[IPCC_IRQ_NUM]; - int wkp; u32 proc_id; u32 n_chans; u32 xcr; @@ -282,16 +281,9 @@ static int stm32_ipcc_probe(struct platform_device *pdev) /* wakeup */ if (of_property_read_bool(np, "wakeup-source")) { - ipcc->wkp = platform_get_irq_byname(pdev, "wakeup"); - if (ipcc->wkp < 0) { - if (ipcc->wkp != -EPROBE_DEFER) - dev_err(dev, "could not get wakeup IRQ\n"); - ret = ipcc->wkp; - goto err_clk; - } - device_set_wakeup_capable(dev, true); - ret = dev_pm_set_dedicated_wake_irq(dev, ipcc->wkp); + + ret = dev_pm_set_wake_irq(dev, ipcc->irqs[IPCC_IRQ_RX]); if (ret) { dev_err(dev, "Failed to set wake up irq\n"); goto err_init_wkp; @@ -334,10 +326,10 @@ static int stm32_ipcc_probe(struct platform_device *pdev) return 0; err_irq_wkp: - if (ipcc->wkp) + if (of_property_read_bool(np, "wakeup-source")) dev_pm_clear_wake_irq(dev); err_init_wkp: - device_init_wakeup(dev, false); + device_set_wakeup_capable(dev, false); err_clk: clk_disable_unprepare(ipcc->clk); return ret; @@ -345,27 +337,17 @@ err_clk: static int stm32_ipcc_remove(struct platform_device *pdev) { - struct stm32_ipcc *ipcc = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; - if (ipcc->wkp) + if (of_property_read_bool(dev->of_node, "wakeup-source")) dev_pm_clear_wake_irq(&pdev->dev); - device_init_wakeup(&pdev->dev, false); + device_set_wakeup_capable(dev, false); return 0; } #ifdef CONFIG_PM_SLEEP -static void stm32_ipcc_set_irq_wake(struct device *dev, bool enable) -{ - struct stm32_ipcc *ipcc = dev_get_drvdata(dev); - unsigned int i; - - if (device_may_wakeup(dev)) - for (i = 0; i < IPCC_IRQ_NUM; i++) - irq_set_irq_wake(ipcc->irqs[i], enable); -} - static int stm32_ipcc_suspend(struct device *dev) { struct stm32_ipcc *ipcc = dev_get_drvdata(dev); @@ -373,8 +355,6 @@ static int stm32_ipcc_suspend(struct device *dev) ipcc->xmr = readl_relaxed(ipcc->reg_proc + IPCC_XMR); ipcc->xcr = readl_relaxed(ipcc->reg_proc + IPCC_XCR); - stm32_ipcc_set_irq_wake(dev, true); - return 0; } @@ -382,8 +362,6 @@ static int stm32_ipcc_resume(struct device *dev) { struct stm32_ipcc *ipcc = dev_get_drvdata(dev); - stm32_ipcc_set_irq_wake(dev, false); - writel_relaxed(ipcc->xmr, ipcc->reg_proc + IPCC_XMR); writel_relaxed(ipcc->xcr, ipcc->reg_proc + IPCC_XCR); |