diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0100-Mailbox-Enabling-interrupt-based-mailbox.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0100-Mailbox-Enabling-interrupt-based-mailbox.patch | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0100-Mailbox-Enabling-interrupt-based-mailbox.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0100-Mailbox-Enabling-interrupt-based-mailbox.patch index e67adb729..cb06f9def 100644 --- a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0100-Mailbox-Enabling-interrupt-based-mailbox.patch +++ b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0100-Mailbox-Enabling-interrupt-based-mailbox.patch @@ -1,4 +1,4 @@ -From 7094f4d8efea8e059c965ba70c73d5226af392cb Mon Sep 17 00:00:00 2001 +From d5bc758cee51d92c48f2835ca2b4ebb146f0f0b4 Mon Sep 17 00:00:00 2001 From: "Arun P. Mohanan" <arun.p.m@linux.intel.com> Date: Wed, 11 Mar 2020 17:23:49 +0530 Subject: [PATCH] [Mailbox] Enabling interrupt based mailbox @@ -7,11 +7,11 @@ Modifying the mailbox driver to use FIFO queue while using interrupt. Signed-off-by: Arun P. Mohanan <arun.p.m@linux.intel.com> --- - drivers/soc/aspeed/aspeed-lpc-mbox.c | 101 ++++++++++++++++++--------- - 1 file changed, 68 insertions(+), 33 deletions(-) + drivers/soc/aspeed/aspeed-lpc-mbox.c | 102 ++++++++++++++++++--------- + 1 file changed, 69 insertions(+), 33 deletions(-) diff --git a/drivers/soc/aspeed/aspeed-lpc-mbox.c b/drivers/soc/aspeed/aspeed-lpc-mbox.c -index 795107206022..99f38a4e4550 100644 +index 795107206022..1ca68bb3534c 100644 --- a/drivers/soc/aspeed/aspeed-lpc-mbox.c +++ b/drivers/soc/aspeed/aspeed-lpc-mbox.c @@ -12,10 +12,11 @@ @@ -95,7 +95,7 @@ index 795107206022..99f38a4e4550 100644 int i; if (!access_ok(buf, count)) -@@ -111,15 +134,29 @@ static ssize_t aspeed_mbox_read(struct file *file, char __user *buf, +@@ -111,17 +134,32 @@ static ssize_t aspeed_mbox_read(struct file *file, char __user *buf, return -EINVAL; #if MBX_USE_INTERRUPT @@ -104,10 +104,10 @@ index 795107206022..99f38a4e4550 100644 - ASPEED_MBOX_CTRL_RECV)) + /* + * Restrict count as per the number of mailbox registers -+ * if interrupt is enabled. ++ * to use kfifo. + */ + if (count != ASPEED_MBOX_NUM_REGS) -+ return -EINVAL; ++ goto reg_read; + + if (kfifo_is_empty(&mbox->fifo)) { + if (file->f_flags & O_NONBLOCK){ @@ -131,8 +131,11 @@ index 795107206022..99f38a4e4550 100644 + #endif ++reg_read: mutex_lock(&mbox->mutex); -@@ -134,11 +171,6 @@ static ssize_t aspeed_mbox_read(struct file *file, char __user *buf, + + for (i = *ppos; count > 0 && i < ASPEED_MBOX_NUM_REGS; i++) { +@@ -134,11 +172,6 @@ static ssize_t aspeed_mbox_read(struct file *file, char __user *buf, p++; count--; } @@ -144,7 +147,7 @@ index 795107206022..99f38a4e4550 100644 ret = p - buf; out_unlock: -@@ -186,16 +218,9 @@ static ssize_t aspeed_mbox_write(struct file *file, const char __user *buf, +@@ -186,16 +219,9 @@ static ssize_t aspeed_mbox_write(struct file *file, const char __user *buf, static unsigned int aspeed_mbox_poll(struct file *file, poll_table *wait) { struct aspeed_mbox *mbox = file_mbox(file); @@ -162,7 +165,7 @@ index 795107206022..99f38a4e4550 100644 } static int aspeed_mbox_release(struct inode *inode, struct file *file) -@@ -220,19 +245,23 @@ static irqreturn_t aspeed_mbox_irq(int irq, void *arg) +@@ -220,19 +246,23 @@ static irqreturn_t aspeed_mbox_irq(int irq, void *arg) #if MBX_USE_INTERRUPT int i; @@ -193,7 +196,7 @@ index 795107206022..99f38a4e4550 100644 #endif /* Clear interrupt status */ -@@ -249,7 +278,6 @@ static int aspeed_mbox_config_irq(struct aspeed_mbox *mbox, +@@ -249,7 +279,6 @@ static int aspeed_mbox_config_irq(struct aspeed_mbox *mbox, { struct device *dev = &pdev->dev; int rc; @@ -201,7 +204,7 @@ index 795107206022..99f38a4e4550 100644 mbox->irq = platform_get_irq(pdev, 0); if (!mbox->irq) return -ENODEV; -@@ -300,6 +328,7 @@ static int aspeed_mbox_probe(struct platform_device *pdev) +@@ -300,6 +329,7 @@ static int aspeed_mbox_probe(struct platform_device *pdev) return -ENODEV; } @@ -209,7 +212,7 @@ index 795107206022..99f38a4e4550 100644 mutex_init(&mbox->mutex); init_waitqueue_head(&mbox->queue); -@@ -316,6 +345,11 @@ static int aspeed_mbox_probe(struct platform_device *pdev) +@@ -316,6 +346,11 @@ static int aspeed_mbox_probe(struct platform_device *pdev) return rc; } @@ -221,7 +224,7 @@ index 795107206022..99f38a4e4550 100644 mbox->miscdev.minor = MISC_DYNAMIC_MINOR; mbox->miscdev.name = DEVICE_NAME; mbox->miscdev.fops = &aspeed_mbox_fops; -@@ -349,6 +383,7 @@ static int aspeed_mbox_remove(struct platform_device *pdev) +@@ -349,6 +384,7 @@ static int aspeed_mbox_remove(struct platform_device *pdev) misc_deregister(&mbox->miscdev); clk_disable_unprepare(mbox->clk); |