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Subject[PATCH 4/5] usb: otg: ab8500-usb: drop support for ab8500 pre v2.0
Date
AB8500 versions preceding 2.0 were only used internally by ST-Ericsson
and are not supported anymore. This patch drops all v1.0 and v1.1
support code.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
---
drivers/usb/otg/ab8500-usb.c | 139 ++++---------------------------------------
1 file changed, 11 insertions(+), 128 deletions(-)

diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c
index 2d86f26..9f5e0e4 100644
--- a/drivers/usb/otg/ab8500-usb.c
+++ b/drivers/usb/otg/ab8500-usb.c
@@ -42,10 +42,8 @@
#define AB8500_BIT_WD_CTRL_ENABLE (1 << 0)
#define AB8500_BIT_WD_CTRL_KICK (1 << 1)

-#define AB8500_V1x_LINK_STAT_WAIT (HZ/10)
#define AB8500_WD_KICK_DELAY_US 100 /* usec */
#define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */
-#define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */

/* Usb line status register */
enum ab8500_usb_link_status {
@@ -70,16 +68,12 @@ enum ab8500_usb_link_status {
struct ab8500_usb {
struct usb_phy phy;
struct device *dev;
- int irq_num_id_rise;
- int irq_num_id_fall;
- int irq_num_vbus_rise;
- int irq_num_vbus_fall;
+ struct ab8500 *ab8500;
int irq_num_link_status;
unsigned vbus_draw;
struct delayed_work dwork;
struct work_struct phy_dis_work;
unsigned long link_status_wait;
- int rev;
};

static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x)
@@ -102,10 +96,7 @@ static void ab8500_usb_wd_workaround(struct ab8500_usb *ab)
(AB8500_BIT_WD_CTRL_ENABLE
| AB8500_BIT_WD_CTRL_KICK));

- if (ab->rev > 0x10) /* v1.1 v2.0 */
- udelay(AB8500_WD_V11_DISABLE_DELAY_US);
- else /* v1.0 */
- msleep(AB8500_WD_V10_DISABLE_DELAY_MS);
+ udelay(AB8500_WD_V11_DISABLE_DELAY_US);

abx500_set_register_interruptible(ab->dev,
AB8500_SYS_CTRL2_BLOCK,
@@ -225,29 +216,6 @@ static void ab8500_usb_delayed_work(struct work_struct *work)
ab8500_usb_link_status_update(ab);
}

-static irqreturn_t ab8500_usb_v1x_common_irq(int irq, void *data)
-{
- struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
- /* Wait for link status to become stable. */
- schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t ab8500_usb_v1x_vbus_fall_irq(int irq, void *data)
-{
- struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
- /* Link status will not be updated till phy is disabled. */
- ab8500_usb_peri_phy_dis(ab);
-
- /* Wait for link status to become stable. */
- schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-
- return IRQ_HANDLED;
-}
-
static irqreturn_t ab8500_usb_v20_irq(int irq, void *data)
{
struct ab8500_usb *ab = (struct ab8500_usb *) data;
@@ -361,86 +329,7 @@ static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host)

static void ab8500_usb_irq_free(struct ab8500_usb *ab)
{
- if (ab->rev < 0x20) {
- free_irq(ab->irq_num_id_rise, ab);
- free_irq(ab->irq_num_id_fall, ab);
- free_irq(ab->irq_num_vbus_rise, ab);
- free_irq(ab->irq_num_vbus_fall, ab);
- } else {
- free_irq(ab->irq_num_link_status, ab);
- }
-}
-
-static int ab8500_usb_v1x_res_setup(struct platform_device *pdev,
- struct ab8500_usb *ab)
-{
- int err;
-
- ab->irq_num_id_rise = platform_get_irq_byname(pdev, "ID_WAKEUP_R");
- if (ab->irq_num_id_rise < 0) {
- dev_err(&pdev->dev, "ID rise irq not found\n");
- return ab->irq_num_id_rise;
- }
- err = request_threaded_irq(ab->irq_num_id_rise, NULL,
- ab8500_usb_v1x_common_irq,
- IRQF_NO_SUSPEND | IRQF_SHARED,
- "usb-id-rise", ab);
- if (err < 0) {
- dev_err(ab->dev, "request_irq failed for ID rise irq\n");
- goto fail0;
- }
-
- ab->irq_num_id_fall = platform_get_irq_byname(pdev, "ID_WAKEUP_F");
- if (ab->irq_num_id_fall < 0) {
- dev_err(&pdev->dev, "ID fall irq not found\n");
- return ab->irq_num_id_fall;
- }
- err = request_threaded_irq(ab->irq_num_id_fall, NULL,
- ab8500_usb_v1x_common_irq,
- IRQF_NO_SUSPEND | IRQF_SHARED,
- "usb-id-fall", ab);
- if (err < 0) {
- dev_err(ab->dev, "request_irq failed for ID fall irq\n");
- goto fail1;
- }
-
- ab->irq_num_vbus_rise = platform_get_irq_byname(pdev, "VBUS_DET_R");
- if (ab->irq_num_vbus_rise < 0) {
- dev_err(&pdev->dev, "VBUS rise irq not found\n");
- return ab->irq_num_vbus_rise;
- }
- err = request_threaded_irq(ab->irq_num_vbus_rise, NULL,
- ab8500_usb_v1x_common_irq,
- IRQF_NO_SUSPEND | IRQF_SHARED,
- "usb-vbus-rise", ab);
- if (err < 0) {
- dev_err(ab->dev, "request_irq failed for Vbus rise irq\n");
- goto fail2;
- }
-
- ab->irq_num_vbus_fall = platform_get_irq_byname(pdev, "VBUS_DET_F");
- if (ab->irq_num_vbus_fall < 0) {
- dev_err(&pdev->dev, "VBUS fall irq not found\n");
- return ab->irq_num_vbus_fall;
- }
- err = request_threaded_irq(ab->irq_num_vbus_fall, NULL,
- ab8500_usb_v1x_vbus_fall_irq,
- IRQF_NO_SUSPEND | IRQF_SHARED,
- "usb-vbus-fall", ab);
- if (err < 0) {
- dev_err(ab->dev, "request_irq failed for Vbus fall irq\n");
- goto fail3;
- }
-
- return 0;
-fail3:
- free_irq(ab->irq_num_vbus_rise, ab);
-fail2:
- free_irq(ab->irq_num_id_fall, ab);
-fail1:
- free_irq(ab->irq_num_id_rise, ab);
-fail0:
- return err;
+ free_irq(ab->irq_num_link_status, ab);
}

static int ab8500_usb_v2_res_setup(struct platform_device *pdev,
@@ -471,16 +360,16 @@ static int ab8500_usb_v2_res_setup(struct platform_device *pdev,
static int ab8500_usb_probe(struct platform_device *pdev)
{
struct ab8500_usb *ab;
+ struct ab8500 *ab8500;
struct usb_otg *otg;
int err;
int rev;

+ ab8500 = dev_get_drvdata(pdev->dev.parent);
rev = abx500_get_chip_id(&pdev->dev);
- if (rev < 0) {
- dev_err(&pdev->dev, "Chip id read failed\n");
- return rev;
- } else if (rev < 0x10) {
- dev_err(&pdev->dev, "Unsupported AB8500 chip\n");
+
+ if (is_ab8500_1p1_or_earlier(ab8500)) {
+ dev_err(&pdev->dev, "Unsupported AB8500 chip rev=%d\n", rev);
return -ENODEV;
}

@@ -495,7 +384,7 @@ static int ab8500_usb_probe(struct platform_device *pdev)
}

ab->dev = &pdev->dev;
- ab->rev = rev;
+ ab->ab8500 = ab8500;
ab->phy.dev = ab->dev;
ab->phy.otg = otg;
ab->phy.label = "ab8500";
@@ -519,13 +408,7 @@ static int ab8500_usb_probe(struct platform_device *pdev)
/* all: Disable phy when called from set_host and set_peripheral */
INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work);

- if (ab->rev < 0x20) {
- err = ab8500_usb_v1x_res_setup(pdev, ab);
- ab->link_status_wait = AB8500_V1x_LINK_STAT_WAIT;
- } else {
- err = ab8500_usb_v2_res_setup(pdev, ab);
- }
-
+ err = ab8500_usb_v2_res_setup(pdev, ab);
if (err < 0)
goto fail0;

@@ -535,7 +418,7 @@ static int ab8500_usb_probe(struct platform_device *pdev)
goto fail1;
}

- dev_info(&pdev->dev, "AB8500 usb driver initialized\n");
+ dev_info(&pdev->dev, "revision 0x%2x driver initialized\n", rev);

return 0;
fail1:
--
1.8.1.3


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