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mfd: ab8500-core: Add ADC support for ab8540 

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
hifive-unleashed-5.1
Lee Jones 2013-02-12 15:04:09 +00:00
parent 5ff9090f3d
commit c0eda9aef1
2 changed files with 98 additions and 43 deletions
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74
drivers/mfd/ab8500-core.c
View File

@ -658,6 +658,15 @@ 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",
@ -1013,12 +1022,6 @@ static struct mfd_cell abx500_common_devs[] = {
.name = "abx500-clk",
.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",
@ -1118,6 +1121,12 @@ 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[] = {
@ -1133,10 +1142,44 @@ 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),
@ -1495,6 +1538,14 @@ 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,
@ -1502,13 +1553,6 @@ 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,

67
drivers/mfd/ab8500-gpadc.c
View File

@ -311,6 +311,12 @@ 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);
@ -761,20 +767,12 @@ 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);
@ -784,21 +782,30 @@ 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 */
@ -821,7 +828,9 @@ 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);
@ -838,8 +847,10 @@ 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);