ARM: S3C: Add ADC synchronous read call.

To add HWMON support, we need a synchronous read() call that blocks
until completion. Add the client that is being service to the select
and convert callbacks to make the code easier.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/arm/plat-s3c/include/plat/adc.h b/arch/arm/plat-s3c/include/plat/adc.h
index d847bd476b6c..5f3b1cd53b90 100644
--- a/arch/arm/plat-s3c/include/plat/adc.h
+++ b/arch/arm/plat-s3c/include/plat/adc.h
@@ -19,10 +19,14 @@ struct s3c_adc_client;
 extern int s3c_adc_start(struct s3c_adc_client *client,
                          unsigned int channel, unsigned int nr_samples);
 
+extern int s3c_adc_read(struct s3c_adc_client *client, unsigned int ch);
+
 extern struct s3c_adc_client *
         s3c_adc_register(struct platform_device *pdev,
-                         void (*select)(unsigned selected),
-                         void (*conv)(unsigned d0, unsigned d1,
+                         void (*select)(struct s3c_adc_client *client,
+                                        unsigned selected),
+                         void (*conv)(struct s3c_adc_client *client,
+                                      unsigned d0, unsigned d1,
                                       unsigned *samples_left),
                          unsigned int is_ts);