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authorArnd Bergmann <arnd@arndb.de>2013-03-28 07:25:51 -0400
committerArnd Bergmann <arnd@arndb.de>2013-03-28 07:25:51 -0400
commit063ab6daeb2ba5ef8f47c3fc04a749936c62d5bb (patch)
tree43532e85397b7105999851a2875db9bbf043080e /drivers/clocksource/tegra20_timer.c
parentcde35bd027023b052316c14ae3fc01e2f487a6ab (diff)
parentdbaf6a8d5de7b63f85eea10a47681f920cbf7385 (diff)
Merge branch 'prima2/multiplatform' into next/multiplatform
This series enables multiplatform support on the SIRF prima2/marco/atlas6 platform. The code was already quite tidy, so this is a relatively simple change, and it follows similar changes we made to other ARMv7 based platforms recently. * prima2/multiplatform: ARM: sirf: enable support in multi_v7_defconfig ARM: sirf: enable multiplatform support ARM: sirf: use clocksource_of infrastructure ARM: sirf: move debug-macro.S to include/debug/sirf.S ARM: sirf: enable sparse IRQ ARM: sirf: move irq driver to drivers/irqchip ARM: sirf: fix prima2 interrupt lookup pinctrl: sirf: convert to linear irq domain clocksource: make CLOCKSOURCE_OF_DECLARE type safe ARM/dts: prima2: add .dtsi for atlas6 and .dts for atla6-evb board arm: prima2: add new SiRFatlas6 machine in common board ARM: smp_twd: convert to use CLKSRC_OF init clocksource: tegra20: use the device_node pointer passed to init clocksource: pass DT node pointer to init functions clocksource: add empty version of clocksource_of_init Conflicts: arch/arm/configs/multi_v7_defconfig arch/arm/mach-spear/spear13xx.c Tested-by: Barry Song <Barry.Song@csr.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/clocksource/tegra20_timer.c')
-rw-r--r--drivers/clocksource/tegra20_timer.c73
1 files changed, 27 insertions, 46 deletions
diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index 0bde03feb095..2e4d8a666c36 100644
--- a/drivers/clocksource/tegra20_timer.c
+++ b/drivers/clocksource/tegra20_timer.c
@@ -154,29 +154,12 @@ static struct irqaction tegra_timer_irq = {
154 .dev_id = &tegra_clockevent, 154 .dev_id = &tegra_clockevent,
155}; 155};
156 156
157static const struct of_device_id timer_match[] __initconst = { 157static void __init tegra20_init_timer(struct device_node *np)
158 { .compatible = "nvidia,tegra20-timer" },
159 {}
160};
161
162static const struct of_device_id rtc_match[] __initconst = {
163 { .compatible = "nvidia,tegra20-rtc" },
164 {}
165};
166
167static void __init tegra20_init_timer(void)
168{ 158{
169 struct device_node *np;
170 struct clk *clk; 159 struct clk *clk;
171 unsigned long rate; 160 unsigned long rate;
172 int ret; 161 int ret;
173 162
174 np = of_find_matching_node(NULL, timer_match);
175 if (!np) {
176 pr_err("Failed to find timer DT node\n");
177 BUG();
178 }
179
180 timer_reg_base = of_iomap(np, 0); 163 timer_reg_base = of_iomap(np, 0);
181 if (!timer_reg_base) { 164 if (!timer_reg_base) {
182 pr_err("Can't map timer registers\n"); 165 pr_err("Can't map timer registers\n");
@@ -200,30 +183,6 @@ static void __init tegra20_init_timer(void)
200 183
201 of_node_put(np); 184 of_node_put(np);
202 185
203 np = of_find_matching_node(NULL, rtc_match);
204 if (!np) {
205 pr_err("Failed to find RTC DT node\n");
206 BUG();
207 }
208
209 rtc_base = of_iomap(np, 0);
210 if (!rtc_base) {
211 pr_err("Can't map RTC registers");
212 BUG();
213 }
214
215 /*
216 * rtc registers are used by read_persistent_clock, keep the rtc clock
217 * enabled
218 */
219 clk = clk_get_sys("rtc-tegra", NULL);
220 if (IS_ERR(clk))
221 pr_warn("Unable to get rtc-tegra clock\n");
222 else
223 clk_prepare_enable(clk);
224
225 of_node_put(np);
226
227 switch (rate) { 186 switch (rate) {
228 case 12000000: 187 case 12000000:
229 timer_writel(0x000b, TIMERUS_USEC_CFG); 188 timer_writel(0x000b, TIMERUS_USEC_CFG);
@@ -259,12 +218,34 @@ static void __init tegra20_init_timer(void)
259 tegra_clockevent.irq = tegra_timer_irq.irq; 218 tegra_clockevent.irq = tegra_timer_irq.irq;
260 clockevents_config_and_register(&tegra_clockevent, 1000000, 219 clockevents_config_and_register(&tegra_clockevent, 1000000,
261 0x1, 0x1fffffff); 220 0x1, 0x1fffffff);
262#ifdef CONFIG_HAVE_ARM_TWD 221}
263 twd_local_timer_of_register(); 222CLOCKSOURCE_OF_DECLARE(tegra20_timer, "nvidia,tegra20-timer", tegra20_init_timer);
264#endif 223
224static void __init tegra20_init_rtc(struct device_node *np)
225{
226 struct clk *clk;
227
228 rtc_base = of_iomap(np, 0);
229 if (!rtc_base) {
230 pr_err("Can't map RTC registers");
231 BUG();
232 }
233
234 /*
235 * rtc registers are used by read_persistent_clock, keep the rtc clock
236 * enabled
237 */
238 clk = clk_get_sys("rtc-tegra", NULL);
239 if (IS_ERR(clk))
240 pr_warn("Unable to get rtc-tegra clock\n");
241 else
242 clk_prepare_enable(clk);
243
244 of_node_put(np);
245
265 register_persistent_clock(NULL, tegra_read_persistent_clock); 246 register_persistent_clock(NULL, tegra_read_persistent_clock);
266} 247}
267CLOCKSOURCE_OF_DECLARE(tegra20, "nvidia,tegra20-timer", tegra20_init_timer); 248CLOCKSOURCE_OF_DECLARE(tegra20_rtc, "nvidia,tegra20-rtc", tegra20_init_rtc);
268 249
269#ifdef CONFIG_PM 250#ifdef CONFIG_PM
270static u32 usec_config; 251static u32 usec_config;