diff options
| author | Patil, Rachna <rachna@ti.com> | 2012-10-16 11:25:45 +0400 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-11-06 02:50:27 +0400 |
| commit | 5e53a69b44e893227b046a7bc74db3cb40d7f39b (patch) | |
| tree | 4586fb856eb6709e40df4c38b0840177adbf4d7c /drivers/mfd/ti_am335x_tscadc.c | |
| parent | 2b99bafab19145a72e2c557326fc4662a864a162 (diff) | |
| download | linux-5e53a69b44e893227b046a7bc74db3cb40d7f39b.tar.xz | |
IIO : ADC: tiadc: Add support of TI's ADC driver
This patch adds support for TI's ADC driver.
This is a multifunctional device.
Analog input lines are provided on which
voltage measurements can be carried out.
You can have upto 8 input lines.
Signed-off-by: Patil, Rachna <rachna@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/ti_am335x_tscadc.c')
| -rw-r--r-- | drivers/mfd/ti_am335x_tscadc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index d812be4b61df..e947dd8bbcc3 100644 --- a/drivers/mfd/ti_am335x_tscadc.c +++ b/drivers/mfd/ti_am335x_tscadc.c @@ -25,6 +25,7 @@ #include <linux/mfd/ti_am335x_tscadc.h> #include <linux/input/ti_am335x_tsc.h> +#include <linux/platform_data/ti_am335x_adc.h> static unsigned int tscadc_readl(struct ti_tscadc_dev *tsadc, unsigned int reg) { @@ -67,14 +68,23 @@ static int __devinit ti_tscadc_probe(struct platform_device *pdev) int irq; int err, ctrl; int clk_value, clock_rate; - int tsc_wires; + int tsc_wires, adc_channels = 0, total_channels; if (!pdata) { dev_err(&pdev->dev, "Could not find platform data\n"); return -EINVAL; } + if (pdata->adc_init) + adc_channels = pdata->adc_init->adc_channels; + tsc_wires = pdata->tsc_init->wires; + total_channels = tsc_wires + adc_channels; + + if (total_channels > 8) { + dev_err(&pdev->dev, "Number of i/p channels more than 8\n"); + return -EINVAL; + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { @@ -172,6 +182,12 @@ static int __devinit ti_tscadc_probe(struct platform_device *pdev) cell->platform_data = tscadc; cell->pdata_size = sizeof(*tscadc); + /* ADC Cell */ + cell = &tscadc->cells[ADC_CELL]; + cell->name = "tiadc"; + cell->platform_data = tscadc; + cell->pdata_size = sizeof(*tscadc); + err = mfd_add_devices(&pdev->dev, pdev->id, tscadc->cells, TSCADC_CELLS, NULL, 0, NULL); if (err < 0) |