X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Farm%2Fmach-omap2%2Fmailbox.c;h=318f3638653c1f97ce106d20ce4d2dd314d85c8d;hb=cf25eb950d0d8ada0db33c1d99d61bce620c128f;hp=ef57b38a56a483ee7598cc13835c78619ca7c53a;hpb=6d1352420901b0a74e6149a891ff4457f7199651;p=safe%2Fjmp%2Flinux-2.6 diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c index ef57b38..318f363 100644 --- a/arch/arm/mach-omap2/mailbox.c +++ b/arch/arm/mach-omap2/mailbox.c @@ -15,9 +15,11 @@ #include #include #include -#include +#include #include +#define DRV_NAME "omap2-mailbox" + #define MAILBOX_REVISION 0x000 #define MAILBOX_SYSCONFIG 0x010 #define MAILBOX_SYSSTATUS 0x014 @@ -27,19 +29,30 @@ #define MAILBOX_IRQSTATUS(u) (0x100 + 8 * (u)) #define MAILBOX_IRQENABLE(u) (0x104 + 8 * (u)) -#define MAILBOX_IRQ_NEWMSG(u) (1 << (2 * (u))) -#define MAILBOX_IRQ_NOTFULL(u) (1 << (2 * (u) + 1)) +#define OMAP4_MAILBOX_IRQSTATUS(u) (0x104 + 10 * (u)) +#define OMAP4_MAILBOX_IRQENABLE(u) (0x108 + 10 * (u)) +#define OMAP4_MAILBOX_IRQENABLE_CLR(u) (0x10c + 10 * (u)) + +#define MAILBOX_IRQ_NEWMSG(m) (1 << (2 * (m))) +#define MAILBOX_IRQ_NOTFULL(m) (1 << (2 * (m) + 1)) /* SYSCONFIG: register bit definition */ #define AUTOIDLE (1 << 0) #define SOFTRESET (1 << 1) #define SMARTIDLE (2 << 3) +#define OMAP4_SOFTRESET (1 << 0) +#define OMAP4_NOIDLE (1 << 2) +#define OMAP4_SMARTIDLE (2 << 2) /* SYSSTATUS: register bit definition */ #define RESETDONE (1 << 0) #define MBOX_REG_SIZE 0x120 + +#define OMAP4_MBOX_REG_SIZE 0x130 + #define MBOX_NR_REGS (MBOX_REG_SIZE / sizeof(u32)) +#define OMAP4_MBOX_NR_REGS (OMAP4_MBOX_REG_SIZE / sizeof(u32)) static void __iomem *mbox_base; @@ -56,7 +69,8 @@ struct omap_mbox2_priv { unsigned long irqstatus; u32 newmsg_bit; u32 notfull_bit; - u32 ctx[MBOX_NR_REGS]; + u32 ctx[OMAP4_MBOX_NR_REGS]; + unsigned long irqdisable; }; static struct clk *mbox_ick_handle; @@ -82,28 +96,47 @@ static int omap2_mbox_startup(struct omap_mbox *mbox) mbox_ick_handle = clk_get(NULL, "mailboxes_ick"); if (IS_ERR(mbox_ick_handle)) { - pr_err("Can't get mailboxes_ick\n"); - return -ENODEV; + printk(KERN_ERR "Could not get mailboxes_ick: %ld\n", + PTR_ERR(mbox_ick_handle)); + return PTR_ERR(mbox_ick_handle); } clk_enable(mbox_ick_handle); - mbox_write_reg(SOFTRESET, MAILBOX_SYSCONFIG); - timeout = jiffies + msecs_to_jiffies(20); - do { - l = mbox_read_reg(MAILBOX_SYSSTATUS); - if (l & RESETDONE) - break; - } while (!time_after(jiffies, timeout)); - - if (!(l & RESETDONE)) { - pr_err("Can't take mmu out of reset\n"); - return -ENODEV; + if (cpu_is_omap44xx()) { + mbox_write_reg(OMAP4_SOFTRESET, MAILBOX_SYSCONFIG); + timeout = jiffies + msecs_to_jiffies(20); + do { + l = mbox_read_reg(MAILBOX_SYSCONFIG); + if (!(l & OMAP4_SOFTRESET)) + break; + } while (!time_after(jiffies, timeout)); + + if (l & OMAP4_SOFTRESET) { + pr_err("Can't take mailbox out of reset\n"); + return -ENODEV; + } + } else { + mbox_write_reg(SOFTRESET, MAILBOX_SYSCONFIG); + timeout = jiffies + msecs_to_jiffies(20); + do { + l = mbox_read_reg(MAILBOX_SYSSTATUS); + if (l & RESETDONE) + break; + } while (!time_after(jiffies, timeout)); + + if (!(l & RESETDONE)) { + pr_err("Can't take mailbox out of reset\n"); + return -ENODEV; + } } l = mbox_read_reg(MAILBOX_REVISION); pr_info("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f)); - l = SMARTIDLE | AUTOIDLE; + if (cpu_is_omap44xx()) + l = OMAP4_SMARTIDLE; + else + l = SMARTIDLE | AUTOIDLE; mbox_write_reg(l, MAILBOX_SYSCONFIG); omap2_mbox_enable_irq(mbox, IRQ_RX); @@ -115,6 +148,7 @@ static void omap2_mbox_shutdown(struct omap_mbox *mbox) { clk_disable(mbox_ick_handle); clk_put(mbox_ick_handle); + mbox_ick_handle = NULL; } /* Mailbox FIFO handle functions */ @@ -143,7 +177,7 @@ static int omap2_mbox_fifo_full(struct omap_mbox *mbox) { struct omap_mbox2_fifo *fifo = &((struct omap_mbox2_priv *)mbox->priv)->tx_fifo; - return (mbox_read_reg(fifo->fifo_stat)); + return mbox_read_reg(fifo->fifo_stat); } /* Mailbox IRQ handle functions */ @@ -163,10 +197,9 @@ static void omap2_mbox_disable_irq(struct omap_mbox *mbox, { struct omap_mbox2_priv *p = (struct omap_mbox2_priv *)mbox->priv; u32 l, bit = (irq == IRQ_TX) ? p->notfull_bit : p->newmsg_bit; - - l = mbox_read_reg(p->irqenable); + l = mbox_read_reg(p->irqdisable); l &= ~bit; - mbox_write_reg(l, p->irqenable); + mbox_write_reg(l, p->irqdisable); } static void omap2_mbox_ack_irq(struct omap_mbox *mbox, @@ -189,15 +222,19 @@ static int omap2_mbox_is_irq(struct omap_mbox *mbox, u32 enable = mbox_read_reg(p->irqenable); u32 status = mbox_read_reg(p->irqstatus); - return (enable & status & bit); + return (int)(enable & status & bit); } static void omap2_mbox_save_ctx(struct omap_mbox *mbox) { int i; struct omap_mbox2_priv *p = mbox->priv; - - for (i = 0; i < MBOX_NR_REGS; i++) { + int nr_regs; + if (cpu_is_omap44xx()) + nr_regs = OMAP4_MBOX_NR_REGS; + else + nr_regs = MBOX_NR_REGS; + for (i = 0; i < nr_regs; i++) { p->ctx[i] = mbox_read_reg(i * sizeof(u32)); dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__, @@ -209,8 +246,12 @@ static void omap2_mbox_restore_ctx(struct omap_mbox *mbox) { int i; struct omap_mbox2_priv *p = mbox->priv; - - for (i = 0; i < MBOX_NR_REGS; i++) { + int nr_regs; + if (cpu_is_omap44xx()) + nr_regs = OMAP4_MBOX_NR_REGS; + else + nr_regs = MBOX_NR_REGS; + for (i = 0; i < nr_regs; i++) { mbox_write_reg(p->ctx[i], i * sizeof(u32)); dev_dbg(mbox->dev, "%s: [%02x] %08x\n", __func__, @@ -242,7 +283,6 @@ static struct omap_mbox_ops omap2_mbox_ops = { */ /* FIXME: the following structs should be filled automatically by the user id */ - /* DSP */ static struct omap_mbox2_priv omap2_mbox_dsp_priv = { .tx_fifo = { @@ -257,8 +297,36 @@ static struct omap_mbox2_priv omap2_mbox_dsp_priv = { .irqstatus = MAILBOX_IRQSTATUS(0), .notfull_bit = MAILBOX_IRQ_NOTFULL(0), .newmsg_bit = MAILBOX_IRQ_NEWMSG(1), + .irqdisable = MAILBOX_IRQENABLE(0), +}; + + + +/* OMAP4 specific data structure. Use the cpu_is_omap4xxx() +to use this*/ +static struct omap_mbox2_priv omap2_mbox_1_priv = { + .tx_fifo = { + .msg = MAILBOX_MESSAGE(0), + .fifo_stat = MAILBOX_FIFOSTATUS(0), + }, + .rx_fifo = { + .msg = MAILBOX_MESSAGE(1), + .msg_stat = MAILBOX_MSGSTATUS(1), + }, + .irqenable = OMAP4_MAILBOX_IRQENABLE(0), + .irqstatus = OMAP4_MAILBOX_IRQSTATUS(0), + .notfull_bit = MAILBOX_IRQ_NOTFULL(0), + .newmsg_bit = MAILBOX_IRQ_NEWMSG(1), + .irqdisable = OMAP4_MAILBOX_IRQENABLE_CLR(0), }; +struct omap_mbox mbox_1_info = { + .name = "mailbox-1", + .ops = &omap2_mbox_ops, + .priv = &omap2_mbox_1_priv, +}; +EXPORT_SYMBOL(mbox_1_info); + struct omap_mbox mbox_dsp_info = { .name = "dsp", .ops = &omap2_mbox_ops, @@ -266,6 +334,30 @@ struct omap_mbox mbox_dsp_info = { }; EXPORT_SYMBOL(mbox_dsp_info); +static struct omap_mbox2_priv omap2_mbox_2_priv = { + .tx_fifo = { + .msg = MAILBOX_MESSAGE(3), + .fifo_stat = MAILBOX_FIFOSTATUS(3), + }, + .rx_fifo = { + .msg = MAILBOX_MESSAGE(2), + .msg_stat = MAILBOX_MSGSTATUS(2), + }, + .irqenable = OMAP4_MAILBOX_IRQENABLE(0), + .irqstatus = OMAP4_MAILBOX_IRQSTATUS(0), + .notfull_bit = MAILBOX_IRQ_NOTFULL(3), + .newmsg_bit = MAILBOX_IRQ_NEWMSG(2), + .irqdisable = OMAP4_MAILBOX_IRQENABLE_CLR(0), +}; + +struct omap_mbox mbox_2_info = { + .name = "mailbox-2", + .ops = &omap2_mbox_ops, + .priv = &omap2_mbox_2_priv, +}; +EXPORT_SYMBOL(mbox_2_info); + + #if defined(CONFIG_ARCH_OMAP2420) /* IVA */ static struct omap_mbox2_priv omap2_mbox_iva_priv = { .tx_fifo = { @@ -280,6 +372,7 @@ static struct omap_mbox2_priv omap2_mbox_iva_priv = { .irqstatus = MAILBOX_IRQSTATUS(3), .notfull_bit = MAILBOX_IRQ_NOTFULL(2), .newmsg_bit = MAILBOX_IRQ_NEWMSG(3), + .irqdisable = MAILBOX_IRQENABLE(3), }; static struct omap_mbox mbox_iva_info = { @@ -305,17 +398,31 @@ static int __devinit omap2_mbox_probe(struct platform_device *pdev) return -ENOMEM; /* DSP or IVA2 IRQ */ - ret = platform_get_irq(pdev, 0); - if (ret < 0) { + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + + if (unlikely(!res)) { dev_err(&pdev->dev, "invalid irq resource\n"); + ret = -ENODEV; goto err_dsp; } - mbox_dsp_info.irq = ret; - - ret = omap_mbox_register(&pdev->dev, &mbox_dsp_info); + if (cpu_is_omap44xx()) { + mbox_1_info.irq = res->start; + ret = omap_mbox_register(&pdev->dev, &mbox_1_info); + } else { + mbox_dsp_info.irq = res->start; + ret = omap_mbox_register(&pdev->dev, &mbox_dsp_info); + } if (ret) goto err_dsp; + if (cpu_is_omap44xx()) { + mbox_2_info.irq = res->start; + ret = omap_mbox_register(&pdev->dev, &mbox_2_info); + if (ret) { + omap_mbox_unregister(&mbox_1_info); + goto err_dsp; + } + } #if defined(CONFIG_ARCH_OMAP2420) /* IVA */ if (cpu_is_omap2420()) { /* IVA IRQ */ @@ -323,18 +430,19 @@ static int __devinit omap2_mbox_probe(struct platform_device *pdev) if (unlikely(!res)) { dev_err(&pdev->dev, "invalid irq resource\n"); ret = -ENODEV; - goto err_iva1; + omap_mbox_unregister(&mbox_dsp_info); + goto err_dsp; } mbox_iva_info.irq = res->start; ret = omap_mbox_register(&pdev->dev, &mbox_iva_info); - if (ret) - goto err_iva1; + if (ret) { + omap_mbox_unregister(&mbox_dsp_info); + goto err_dsp; + } } #endif return 0; -err_iva1: - omap_mbox_unregister(&mbox_dsp_info); err_dsp: iounmap(mbox_base); return ret; @@ -345,7 +453,12 @@ static int __devexit omap2_mbox_remove(struct platform_device *pdev) #if defined(CONFIG_ARCH_OMAP2420) omap_mbox_unregister(&mbox_iva_info); #endif - omap_mbox_unregister(&mbox_dsp_info); + + if (cpu_is_omap44xx()) { + omap_mbox_unregister(&mbox_2_info); + omap_mbox_unregister(&mbox_1_info); + } else + omap_mbox_unregister(&mbox_dsp_info); iounmap(mbox_base); return 0; } @@ -354,7 +467,7 @@ static struct platform_driver omap2_mbox_driver = { .probe = omap2_mbox_probe, .remove = __devexit_p(omap2_mbox_remove), .driver = { - .name = "omap2-mailbox", + .name = DRV_NAME, }, }; @@ -372,6 +485,6 @@ module_init(omap2_mbox_init); module_exit(omap2_mbox_exit); MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("omap mailbox: omap2/3 architecture specific functions"); +MODULE_DESCRIPTION("omap mailbox: omap2/3/4 architecture specific functions"); MODULE_AUTHOR("Hiroshi DOYU , Paul Mundt"); -MODULE_ALIAS("platform:omap2-mailbox"); +MODULE_ALIAS("platform:"DRV_NAME);