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Commit 055b8224 authored by Alex Dubov's avatar Alex Dubov Committed by Pierre Ossman
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disable socket power in adapter driver instead of media one 



Socket power must be fully controlled by adapter driver. This also prevents
unnecessary power-off of the socket when media driver is unloaded, yet
media remains in the socket.

Signed-off-by: default avatarAlex Dubov <oakad@yahoo.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 36f021b5

drivers/misc/tifm_7xx1.c

+24 −3
Original line number Diff line number Diff line
@@ -105,7 +105,8 @@ static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr) 
	    == TIFM_TYPE_XD)

		msleep(40);



	writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);

	writel((s_state & TIFM_CTRL_POWER_MASK) | 0x0c00,

	       sock_addr + SOCK_CONTROL);

	/* wait for power to stabilize */

	msleep(20);

	for (cnt = 16; cnt <= 256; cnt <<= 1) {
@@ -122,6 +123,12 @@ static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr) 
	return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;

}



inline static void tifm_7xx1_sock_power_off(char __iomem *sock_addr)

{

	writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL),

	       sock_addr + SOCK_CONTROL);

}



inline static char __iomem *

tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)

{
@@ -133,6 +140,7 @@ static void tifm_7xx1_switch_media(struct work_struct *work) 
	struct tifm_adapter *fm = container_of(work, struct tifm_adapter,

					       media_switcher);

	struct tifm_dev *sock;

	char __iomem *sock_addr;

	unsigned long flags;

	unsigned char media_id;

	unsigned int socket_change_set, cnt;
@@ -158,11 +166,12 @@ static void tifm_7xx1_switch_media(struct work_struct *work) 
			       "%s : demand removing card from socket %u:%u\n",

			       fm->cdev.class_id, fm->id, cnt);

			fm->sockets[cnt] = NULL;

			sock_addr = sock->addr;

			spin_unlock_irqrestore(&fm->lock, flags);

			device_unregister(&sock->dev);

			spin_lock_irqsave(&fm->lock, flags);

			writel(0x0e00, tifm_7xx1_sock_addr(fm->addr, cnt)

			       + SOCK_CONTROL);

			tifm_7xx1_sock_power_off(sock_addr);

			writel(0x0e00, sock_addr + SOCK_CONTROL);

		}



		spin_unlock_irqrestore(&fm->lock, flags);
@@ -205,8 +214,16 @@ static void tifm_7xx1_switch_media(struct work_struct *work) 


static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)

{

	struct tifm_adapter *fm = pci_get_drvdata(dev);

	int cnt;



	dev_dbg(&dev->dev, "suspending host\n");



	for (cnt = 0; cnt < fm->num_sockets; cnt++) {

		if (fm->sockets[cnt])

			tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr);

	}



	pci_save_state(dev);

	pci_enable_wake(dev, pci_choose_state(dev, state), 0);

	pci_disable_device(dev);
@@ -357,6 +374,7 @@ err_out: 
static void tifm_7xx1_remove(struct pci_dev *dev)

{

	struct tifm_adapter *fm = pci_get_drvdata(dev);

	int cnt;



	fm->eject = tifm_7xx1_dummy_eject;

	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
@@ -365,6 +383,9 @@ static void tifm_7xx1_remove(struct pci_dev *dev) 


	tifm_remove_adapter(fm);



	for (cnt = 0; cnt < fm->num_sockets; cnt++)

		tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt));



	pci_set_drvdata(dev, NULL);



	iounmap(fm->addr);

drivers/mmc/host/tifm_sd.c

+1 −12
Original line number Diff line number Diff line
@@ -1021,10 +1021,6 @@ static void tifm_sd_remove(struct tifm_dev *sock) 
	mmc_remove_host(mmc);

	dev_dbg(&sock->dev, "after remove\n");



	/* The meaning of the bit majority in this constant is unknown. */

	writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),

	       sock->addr + SOCK_CONTROL);



	mmc_free_host(mmc);

}
@@ -1032,14 +1028,7 @@ static void tifm_sd_remove(struct tifm_dev *sock) 


static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)

{

	struct mmc_host *mmc = tifm_get_drvdata(sock);

	int rc;



	rc = mmc_suspend_host(mmc, state);

	/* The meaning of the bit majority in this constant is unknown. */

	writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),

	       sock->addr + SOCK_CONTROL);

	return rc;

	return mmc_suspend_host(tifm_get_drvdata(sock), state);

}



static int tifm_sd_resume(struct tifm_dev *sock)

include/linux/tifm.h

+1 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ enum { 


#define TIFM_CTRL_LED             0x00000040

#define TIFM_CTRL_FAST_CLK        0x00000100

#define TIFM_CTRL_POWER_MASK      0x00000007



#define TIFM_SOCK_STATE_OCCUPIED  0x00000008

#define TIFM_SOCK_STATE_POWERED   0x00000080