From 5fe5f092445fc3e982e0378385750adb5de14715 Mon Sep 17 00:00:00 2001
From: Kevin O'Connor <kevin@koconnor.net>
Date: Thu, 23 May 2019 08:46:26 -0400
Subject: [PATCH] atsam: Minor whitespace changes to i2c.c

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
---
 src/atsam/i2c.c | 45 ++++++++++++++++++---------------------------
 1 file changed, 18 insertions(+), 27 deletions(-)

diff --git a/src/atsam/i2c.c b/src/atsam/i2c.c
index f2a5a4c8..8554e635 100644
--- a/src/atsam/i2c.c
+++ b/src/atsam/i2c.c
@@ -48,29 +48,25 @@ i2c_init(Twi *p_twi, uint32_t rate)
     p_twi->TWI_CR = TWI_CR_SVDIS;
     p_twi->TWI_CR = TWI_CR_MSEN;
 
-    uint32_t cldiv = 0;
-    uint32_t chdiv = 0;
-    uint32_t ckdiv = 0;
-
+    uint32_t cldiv = 0, chdiv = 0, ckdiv = 0;
     cldiv = SystemCoreClock / ((rate > 384000 ? 384000 : rate) * 4) - 4;
 
-    while((cldiv > 255) && (ckdiv < 7)) {
+    while ((cldiv > 255) && (ckdiv < 7)) {
         ckdiv++;
         cldiv /= 2;
     }
 
     if (rate > 348000) {
         chdiv = SystemCoreClock / ((2 * rate - 384000) * 4) - 4;
-        while((chdiv > 255) && (ckdiv < 7)) {
+        while ((chdiv > 255) && (ckdiv < 7)) {
             ckdiv++;
             chdiv /= 2;
         }
     } else {
         chdiv = cldiv;
     }
-    p_twi->TWI_CWGR = TWI_CWGR_CLDIV(cldiv) | \
-                      TWI_CWGR_CHDIV(chdiv) | \
-                      TWI_CWGR_CKDIV(ckdiv);
+    p_twi->TWI_CWGR = (TWI_CWGR_CLDIV(cldiv) | TWI_CWGR_CHDIV(chdiv)
+                       | TWI_CWGR_CKDIV(ckdiv));
 }
 
 static uint32_t
@@ -102,14 +98,12 @@ i2c_setup(uint32_t bus, uint32_t rate, uint8_t addr)
 }
 
 void
-i2c_write(struct i2c_config config,
-                uint8_t write_len, uint8_t *write)
+i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write)
 {
     Twi *p_twi = config.twi;
-    uint32_t status;
-    uint32_t bytes_to_send = write_len;
+    uint32_t status, bytes_to_send = write_len;
     p_twi->TWI_MMR = TWI_MMR_DADR(config.addr);
-    for(;;) {
+    for (;;) {
         status = p_twi->TWI_SR;
         if (status & TWI_SR_NACK)
             shutdown("I2C NACK error encountered!");
@@ -121,8 +115,8 @@ i2c_write(struct i2c_config config,
         bytes_to_send--;
     }
     p_twi->TWI_CR = TWI_CR_STOP;
-    while(!(p_twi->TWI_SR& TWI_SR_TXCOMP)) {
-    }
+    while (!(p_twi->TWI_SR & TWI_SR_TXCOMP))
+        ;
 }
 
 static void
@@ -138,18 +132,15 @@ i2c_wait(Twi* p_twi, uint32_t bit, uint32_t timeout)
 }
 
 void
-i2c_read(struct i2c_config config,
-              uint8_t reg_len, uint8_t *reg,
-              uint8_t read_len, uint8_t *read)
+i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg
+         , uint8_t read_len, uint8_t *read)
 {
     Twi *p_twi = config.twi;
-    uint32_t status;
-    uint32_t bytes_to_send=read_len;
+    uint32_t status, bytes_to_send = read_len;
     uint8_t stop = 0;
     p_twi->TWI_MMR = 0;
-    p_twi->TWI_MMR = TWI_MMR_MREAD | TWI_MMR_DADR(config.addr) |
-                     ((reg_len << TWI_MMR_IADRSZ_Pos) &
-                     TWI_MMR_IADRSZ_Msk);
+    p_twi->TWI_MMR = (TWI_MMR_MREAD | TWI_MMR_DADR(config.addr)
+                      | ((reg_len << TWI_MMR_IADRSZ_Pos) & TWI_MMR_IADRSZ_Msk));
     p_twi->TWI_IADR = 0;
     p_twi->TWI_IADR = addr_to_u32(reg_len, reg);
     if (bytes_to_send == 1) {
@@ -169,12 +160,12 @@ i2c_read(struct i2c_config config,
             stop = 1;
         }
         i2c_wait(p_twi, TWI_SR_RXRDY, timer_read_time() + timer_from_us(5000));
-        if (!(status & TWI_SR_RXRDY)) {
+        if (!(status & TWI_SR_RXRDY))
             continue;
-        }
         *read++ = p_twi->TWI_RHR;
         bytes_to_send--;
     }
-    while (!(p_twi->TWI_SR & TWI_SR_TXCOMP)) {}
+    while (!(p_twi->TWI_SR & TWI_SR_TXCOMP))
+        ;
     (void)p_twi->TWI_SR;
 }