[PATCH 09/35] mfd: ab8500-core: Add ADC support for ab8540
From: Lee Jones
Date: Fri Feb 15 2013 - 08:04:57 EST
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
drivers/mfd/ab8500-core.c | 74 +++++++++++++++++++++++++++++++++++---------
drivers/mfd/ab8500-gpadc.c | 67 ++++++++++++++++++++++-----------------
2 files changed, 98 insertions(+), 43 deletions(-)
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index 678afd0..ecf570f 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -604,6 +604,15 @@ static struct resource ab8500_gpadc_resources[] = {
},
};
+static struct resource ab8540_gpadc_resources[] = {
+ {
+ .name = "SW_CONV_END",
+ .start = AB8500_INT_GP_SW_ADC_CONV_END,
+ .end = AB8500_INT_GP_SW_ADC_CONV_END,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
static struct resource ab8500_rtc_resources[] = {
{
.name = "60S",
@@ -954,12 +963,6 @@ static struct mfd_cell abx500_common_devs[] = {
.of_compatible = "stericsson,abx500-clk",
},
{
- .name = "ab8500-gpadc",
- .of_compatible = "stericsson,ab8500-gpadc",
- .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
- .resources = ab8500_gpadc_resources,
- },
- {
.name = "ab8500-rtc",
.of_compatible = "stericsson,ab8500-rtc",
.num_resources = ARRAY_SIZE(ab8500_rtc_resources),
@@ -1066,6 +1069,12 @@ static struct mfd_cell ab8500_devs[] = {
.name = "ab8500-codec",
.of_compatible = "stericsson,ab8500-codec",
},
+ {
+ .name = "ab8500-gpadc",
+ .of_compatible = "stericsson,ab8500-gpadc",
+ .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
+ .resources = ab8500_gpadc_resources,
+ },
};
static struct mfd_cell ab9540_devs[] = {
@@ -1080,10 +1089,44 @@ static struct mfd_cell ab9540_devs[] = {
{
.name = "ab9540-codec",
},
+ {
+ .name = "ab8500-gpadc",
+ .num_resources = ARRAY_SIZE(ab8500_gpadc_resources),
+ .resources = ab8500_gpadc_resources,
+ },
+ {
+ .name = "ab-iddet",
+ .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
+ .resources = ab8505_iddet_resources,
+ },
};
-/* Device list common to ab9540 and ab8505 */
-static struct mfd_cell ab9540_ab8505_devs[] = {
+/* Device list for ab8505 */
+static struct mfd_cell ab8505_devs[] = {
+ {
+ .name = "ab-iddet",
+ .num_resources = ARRAY_SIZE(ab8505_iddet_resources),
+ .resources = ab8505_iddet_resources,
+ },
+};
+
+static struct mfd_cell ab8540_devs[] = {
+ {
+ .name = "ab8500-gpio",
+ },
+ {
+ .name = "ab8540-usb",
+ .num_resources = ARRAY_SIZE(ab8500_usb_resources),
+ .resources = ab8500_usb_resources,
+ },
+ {
+ .name = "ab8540-codec",
+ },
+ {
+ .name = "ab8500-gpadc",
+ .num_resources = ARRAY_SIZE(ab8540_gpadc_resources),
+ .resources = ab8540_gpadc_resources,
+ },
{
.name = "ab-iddet",
.num_resources = ARRAY_SIZE(ab8505_iddet_resources),
@@ -1416,6 +1459,14 @@ static int ab8500_probe(struct platform_device *pdev)
ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
ARRAY_SIZE(ab9540_devs), NULL,
ab8500->irq_base, ab8500->domain);
+ else if (is_ab8540(ab8500))
+ ret = mfd_add_devices(ab8500->dev, 0, ab8540_devs,
+ ARRAY_SIZE(ab8540_devs), NULL,
+ ab8500->irq_base, ab8500->domain);
+ else if (is_ab8505(ab8500))
+ ret = mfd_add_devices(ab8500->dev, 0, ab8505_devs,
+ ARRAY_SIZE(ab8505_devs), NULL,
+ ab8500->irq_base, ab8500->domain);
else
ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
ARRAY_SIZE(ab8500_devs), NULL,
@@ -1423,13 +1474,6 @@ static int ab8500_probe(struct platform_device *pdev)
if (ret)
return ret;
- if (is_ab9540(ab8500) || is_ab8505(ab8500))
- ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
- ARRAY_SIZE(ab9540_ab8505_devs), NULL,
- ab8500->irq_base, ab8500->domain);
- if (ret)
- return ret;
-
if (!no_bm) {
/* Add battery management devices */
ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index 5942f2f..6b18975 100644
--- a/drivers/mfd/ab8500-gpadc.c
+++ b/drivers/mfd/ab8500-gpadc.c
@@ -314,6 +314,12 @@ int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel,
if (!gpadc)
return -ENODEV;
+ /* check if convertion is supported */
+ if ((gpadc->irq_sw < 0) && (conv_type == ADC_SW))
+ return -ENOTSUPP;
+ if ((gpadc->irq_hw < 0) && (conv_type == ADC_HW))
+ return -ENOTSUPP;
+
mutex_lock(&gpadc->ab8500_gpadc_lock);
/* Enable VTVout LDO this is required for GPADC */
pm_runtime_get_sync(gpadc->dev);
@@ -766,20 +772,12 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
}
gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
- if (gpadc->irq_sw < 0) {
- dev_err(gpadc->dev, "failed to get platform irq-%d\n",
- gpadc->irq_sw);
- ret = gpadc->irq_sw;
- goto fail;
- }
+ if (gpadc->irq_sw < 0)
+ dev_err(gpadc->dev, "failed to get platform sw_conv_end irq\n");
gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
- if (gpadc->irq_hw < 0) {
- dev_err(gpadc->dev, "failed to get platform irq-%d\n",
- gpadc->irq_hw);
- ret = gpadc->irq_hw;
- goto fail;
- }
+ if (gpadc->irq_hw < 0)
+ dev_err(gpadc->dev, "failed to get platform hw_conv_end irq\n");
gpadc->dev = &pdev->dev;
gpadc->parent = dev_get_drvdata(pdev->dev.parent);
@@ -789,21 +787,30 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
init_completion(&gpadc->ab8500_gpadc_complete);
/* Register interrupts */
- ret = request_threaded_irq(gpadc->irq_sw, NULL,
- ab8500_bm_gpadcconvend_handler,
- IRQF_NO_SUSPEND | IRQF_SHARED, "ab8500-gpadc-sw", gpadc);
- if (ret < 0) {
- dev_err(gpadc->dev, "Failed to register interrupt, irq: %d\n",
- gpadc->irq_sw);
- goto fail;
+ if (gpadc->irq_sw >= 0) {
+ ret = request_threaded_irq(gpadc->irq_sw, NULL,
+ ab8500_bm_gpadcconvend_handler,
+ IRQF_NO_SUSPEND | IRQF_SHARED, "ab8500-gpadc-sw",
+ gpadc);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "Failed to register interrupt irq: %d\n",
+ gpadc->irq_sw);
+ goto fail;
+ }
}
- ret = request_threaded_irq(gpadc->irq_hw, NULL,
- ab8500_bm_gpadcconvend_handler,
- IRQF_NO_SUSPEND | IRQF_SHARED, "ab8500-gpadc-hw", gpadc);
- if (ret < 0) {
- dev_err(gpadc->dev, "Failed to register interrupt, irq: %d\n",
- gpadc->irq_hw);
- goto fail;
+
+ if (gpadc->irq_hw >= 0) {
+ ret = request_threaded_irq(gpadc->irq_hw, NULL,
+ ab8500_bm_gpadcconvend_handler,
+ IRQF_NO_SUSPEND | IRQF_SHARED, "ab8500-gpadc-hw",
+ gpadc);
+ if (ret < 0) {
+ dev_err(gpadc->dev,
+ "Failed to register interrupt irq: %d\n",
+ gpadc->irq_hw);
+ goto fail_irq;
+ }
}
/* VTVout LDO used to power up ab8500-GPADC */
@@ -825,7 +832,9 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
ab8500_gpadc_read_calibration_data(gpadc);
list_add_tail(&gpadc->node, &ab8500_gpadc_list);
dev_dbg(gpadc->dev, "probe success\n");
+
return 0;
+
fail_irq:
free_irq(gpadc->irq_sw, gpadc);
free_irq(gpadc->irq_hw, gpadc);
@@ -842,8 +851,10 @@ static int ab8500_gpadc_remove(struct platform_device *pdev)
/* remove this gpadc entry from the list */
list_del(&gpadc->node);
/* remove interrupt - completion of Sw ADC conversion */
- free_irq(gpadc->irq_sw, gpadc);
- free_irq(gpadc->irq_hw, gpadc);
+ if (gpadc->irq_sw >= 0)
+ free_irq(gpadc->irq_sw, gpadc);
+ if (gpadc->irq_hw >= 0)
+ free_irq(gpadc->irq_hw, gpadc);
pm_runtime_get_sync(gpadc->dev);
pm_runtime_disable(gpadc->dev);
--
1.7.10.4
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